|
|
char = S;code = 83
char = y;code = 121
char = n;code = 110
char = t;code = 116
char = h;code = 104
char = e;code = 101
char = s;code = 115
char = i;code = 105
char = s;code = 115
char = ;code = 32
char = a;code = 97
char = n;code = 110
char = d;code = 100
char = ;code = 32
char = c;code = 99
char = h;code = 104
char = a;code = 97
char = r;code = 114
char = a;code = 97
char = c;code = 99
char = t;code = 116
char = e;code = 101
char = r;code = 114
char = i;code = 105
char = z;code = 122
char = a;code = 97
char = t;code = 116
char = i;code = 105
char = o;code = 111
char = n;code = 110
char = ;code = 32
char = o;code = 111
char = f;code = 102
char = ;code = 32
char = F;code = 70
char = e;code = 101
char = 2;code = 50
char = O;code = 79
char = 3;code = 51
char = /;code = 47
char = S;code = 83
char = i;code = 105
char = O;code = 79
char = 2;code = 50
char = ;code = 32
char = n;code = 110
char = a;code = 97
char = n;code = 110
char = o;code = 111
char = c;code = 99
char = o;code = 111
char = m;code = 109
char = p;code = 112
char = o;code = 111
char = s;code = 115
char = i;code = 105
char = t;code = 116
char = e;code = 101
char = s;code = 115
char = .;code = 46
result sql = Synthesis and characterization of Fe2O3/SiO2 nanocomposites.
Synthesis and characterization of Fe2O3/SiO2 nanocomposites.char = F;code = 70
char = e;code = 101
char = 2;code = 50
char = O;code = 79
char = 3;code = 51
char = /;code = 47
char = S;code = 83
char = i;code = 105
char = O;code = 79
char = 2;code = 50
char = ;code = 32
char = n;code = 110
char = a;code = 97
char = n;code = 110
char = o;code = 111
char = c;code = 99
char = o;code = 111
char = m;code = 109
char = p;code = 112
char = o;code = 111
char = s;code = 115
char = i;code = 105
char = t;code = 116
char = e;code = 101
char = s;code = 115
char = ;code = 32
char = b;code = 98
char = a;code = 97
char = s;code = 115
char = e;code = 101
char = d;code = 100
char = ;code = 32
char = o;code = 111
char = n;code = 110
char = ;code = 32
char = f;code = 102
char = u;code = 117
char = m;code = 109
char = e;code = 101
char = d;code = 100
char = ;code = 32
char = s;code = 115
char = i;code = 105
char = l;code = 108
char = i;code = 105
char = c;code = 99
char = a;code = 97
char = ;code = 32
char = A;code = 65
char = -;code = 45
char = 3;code = 51
char = 0;code = 48
char = 0;code = 48
char = ;code = 32
char = (;code = 40
char = S;code = 83
char = (;code = 40
char = B;code = 66
char = E;code = 69
char = T;code = 84
char = );code = 41
char = =;code = 61
char = 3;code = 51
char = 3;code = 51
char = 7;code = 55
char = ;code = 32
char = m;code = 109
char = 2;code = 50
char = /;code = 47
char = g;code = 103
char = );code = 41
char = ;code = 32
char = w;code = 119
char = i;code = 105
char = t;code = 116
char = h;code = 104
char = ;code = 32
char = i;code = 105
char = r;code = 114
char = o;code = 111
char = n;code = 110
char = ;code = 32
char = o;code = 111
char = x;code = 120
char = i;code = 105
char = d;code = 100
char = e;code = 101
char = ;code = 32
char = d;code = 100
char = e;code = 101
char = p;code = 112
char = o;code = 111
char = s;code = 115
char = i;code = 105
char = t;code = 116
char = s;code = 115
char = ;code = 32
char = a;code = 97
char = t;code = 116
char = ;code = 32
char = d;code = 100
char = i;code = 105
char = f;code = 102
char = f;code = 102
char = e;code = 101
char = r;code = 114
char = e;code = 101
char = n;code = 110
char = t;code = 116
char = ;code = 32
char = c;code = 99
char = o;code = 111
char = n;code = 110
char = t;code = 116
char = e;code = 101
char = n;code = 110
char = t;code = 116
char = ;code = 32
char = w;code = 119
char = e;code = 101
char = r;code = 114
char = e;code = 101
char = ;code = 32
char = s;code = 115
char = y;code = 121
char = n;code = 110
char = t;code = 116
char = h;code = 104
char = e;code = 101
char = s;code = 115
char = i;code = 105
char = z;code = 122
char = e;code = 101
char = d;code = 100
char = ;code = 32
char = u;code = 117
char = s;code = 115
char = i;code = 105
char = n;code = 110
char = g;code = 103
char = ;code = 32
char = F;code = 70
char = e;code = 101
char = (;code = 40
char = I;code = 73
char = I;code = 73
char = I;code = 73
char = );code = 41
char = ;code = 32
char = a;code = 97
char = c;code = 99
char = e;code = 101
char = t;code = 116
char = y;code = 121
char = l;code = 108
char = a;code = 97
char = c;code = 99
char = e;code = 101
char = t;code = 116
char = o;code = 111
char = n;code = 110
char = a;code = 97
char = t;code = 116
char = e;code = 101
char = ;code = 32
char = (;code = 40
char = F;code = 70
char = e;code = 101
char = (;code = 40
char = a;code = 97
char = c;code = 99
char = a;code = 97
char = c;code = 99
char = );code = 41
char = 3;code = 51
char = );code = 41
char = ;code = 32
char = d;code = 100
char = i;code = 105
char = s;code = 115
char = s;code = 115
char = o;code = 111
char = l;code = 108
char = v;code = 118
char = e;code = 101
char = d;code = 100
char = ;code = 32
char = i;code = 105
char = n;code = 110
char = ;code = 32
char = i;code = 105
char = s;code = 115
char = o;code = 111
char = p;code = 112
char = r;code = 114
char = o;code = 111
char = p;code = 112
char = y;code = 121
char = l;code = 108
char = ;code = 32
char = a;code = 97
char = l;code = 108
char = c;code = 99
char = o;code = 111
char = h;code = 104
char = o;code = 111
char = l;code = 108
char = ;code = 32
char = o;code = 111
char = r;code = 114
char = ;code = 32
char = c;code = 99
char = a;code = 97
char = r;code = 114
char = b;code = 98
char = o;code = 111
char = n;code = 110
char = ;code = 32
char = t;code = 116
char = e;code = 101
char = t;code = 116
char = r;code = 114
char = a;code = 97
char = c;code = 99
char = h;code = 104
char = l;code = 108
char = o;code = 111
char = r;code = 114
char = i;code = 105
char = d;code = 100
char = e;code = 101
char = ;code = 32
char = f;code = 102
char = o;code = 111
char = r;code = 114
char = ;code = 32
char = i;code = 105
char = m;code = 109
char = p;code = 112
char = r;code = 114
char = e;code = 101
char = g;code = 103
char = n;code = 110
char = a;code = 97
char = t;code = 116
char = i;code = 105
char = o;code = 111
char = n;code = 110
char = ;code = 32
char = o;code = 111
char = f;code = 102
char = ;code = 32
char = t;code = 116
char = h;code = 104
char = e;code = 101
char = ;code = 32
char = n;code = 110
char = a;code = 97
char = n;code = 110
char = o;code = 111
char = s;code = 115
char = i;code = 105
char = l;code = 108
char = i;code = 105
char = c;code = 99
char = a;code = 97
char = ;code = 32
char = p;code = 112
char = o;code = 111
char = w;code = 119
char = d;code = 100
char = e;code = 101
char = r;code = 114
char = ;code = 32
char = a;code = 97
char = t;code = 116
char = ;code = 32
char = d;code = 100
char = i;code = 105
char = f;code = 102
char = f;code = 102
char = e;code = 101
char = r;code = 114
char = e;code = 101
char = n;code = 110
char = t;code = 116
char = ;code = 32
char = a;code = 97
char = m;code = 109
char = o;code = 111
char = u;code = 117
char = n;code = 110
char = t;code = 116
char = s;code = 115
char = ;code = 32
char = o;code = 111
char = f;code = 102
char = ;code = 32
char = F;code = 70
char = e;code = 101
char = (;code = 40
char = a;code = 97
char = c;code = 99
char = a;code = 97
char = c;code = 99
char = );code = 41
char = 3;code = 51
char = ;code = 32
char = t;code = 116
char = h;code = 104
char = e;code = 101
char = n;code = 110
char = ;code = 32
char = o;code = 111
char = x;code = 120
char = i;code = 105
char = d;code = 100
char = i;code = 105
char = z;code = 122
char = e;code = 101
char = d;code = 100
char = ;code = 32
char = i;code = 105
char = n;code = 110
char = ;code = 32
char = a;code = 97
char = i;code = 105
char = r;code = 114
char = ;code = 32
char = a;code = 97
char = t;code = 116
char = ;code = 32
char = 4;code = 52
char = 0;code = 48
char = 0;code = 48
char = -;code = 45
char = 9;code = 57
char = 0;code = 48
char = 0;code = 48
char = ;code = 32
char = d;code = 100
char = e;code = 101
char = g;code = 103
char = r;code = 114
char = e;code = 101
char = e;code = 101
char = s;code = 115
char = ;code = 32
char = C;code = 67
char = .;code = 46
char = ;code = 32
char = S;code = 83
char = a;code = 97
char = m;code = 109
char = p;code = 112
char = l;code = 108
char = e;code = 101
char = s;code = 115
char = ;code = 32
char = w;code = 119
char = i;code = 105
char = t;code = 116
char = h;code = 104
char = ;code = 32
char = F;code = 70
char = e;code = 101
char = (;code = 40
char = a;code = 97
char = c;code = 99
char = a;code = 97
char = c;code = 99
char = );code = 41
char = 3;code = 51
char = ;code = 32
char = a;code = 97
char = d;code = 100
char = s;code = 115
char = o;code = 111
char = r;code = 114
char = b;code = 98
char = e;code = 101
char = d;code = 100
char = ;code = 32
char = o;code = 111
char = n;code = 110
char = t;code = 116
char = o;code = 111
char = ;code = 32
char = n;code = 110
char = a;code = 97
char = n;code = 110
char = o;code = 111
char = s;code = 115
char = i;code = 105
char = l;code = 108
char = i;code = 105
char = c;code = 99
char = a;code = 97
char = ;code = 32
char = a;code = 97
char = n;code = 110
char = d;code = 100
char = ;code = 32
char = s;code = 115
char = a;code = 97
char = m;code = 109
char = p;code = 112
char = l;code = 108
char = e;code = 101
char = s;code = 115
char = ;code = 32
char = w;code = 119
char = i;code = 105
char = t;code = 116
char = h;code = 104
char = ;code = 32
char = F;code = 70
char = e;code = 101
char = 2;code = 50
char = O;code = 79
char = 3;code = 51
char = /;code = 47
char = S;code = 83
char = i;code = 105
char = O;code = 79
char = 2;code = 50
char = ;code = 32
char = i;code = 105
char = n;code = 110
char = c;code = 99
char = l;code = 108
char = u;code = 117
char = d;code = 100
char = i;code = 105
char = n;code = 110
char = g;code = 103
char = ;code = 32
char = 6;code = 54
char = -;code = 45
char = 1;code = 49
char = 7;code = 55
char = ;code = 32
char = w;code = 119
char = t;code = 116
char = %;code = 37
char = ;code = 32
char = o;code = 111
char = f;code = 102
char = ;code = 32
char = F;code = 70
char = e;code = 101
char = 2;code = 50
char = O;code = 79
char = 3;code = 51
char = ;code = 32
char = w;code = 119
char = e;code = 101
char = r;code = 114
char = e;code = 101
char = ;code = 32
char = i;code = 105
char = n;code = 110
char = v;code = 118
char = e;code = 101
char = s;code = 115
char = t;code = 116
char = i;code = 105
char = g;code = 103
char = a;code = 97
char = t;code = 116
char = e;code = 101
char = d;code = 100
char = ;code = 32
char = u;code = 117
char = s;code = 115
char = i;code = 105
char = n;code = 110
char = g;code = 103
char = ;code = 32
char = X;code = 88
char = R;code = 82
char = D;code = 68
char = ,;code = 44
char = ;code = 32
char = X;code = 88
char = P;code = 80
char = S;code = 83
char = ,;code = 44
char = ;code = 32
char = T;code = 84
char = G;code = 71
char = /;code = 47
char = D;code = 68
char = T;code = 84
char = A;code = 65
char = ,;code = 44
char = ;code = 32
char = T;code = 84
char = P;code = 80
char = D;code = 68
char = ;code = 32
char = M;code = 77
char = S;code = 83
char = ,;code = 44
char = ;code = 32
char = F;code = 70
char = T;code = 84
char = I;code = 73
char = R;code = 82
char = ,;code = 44
char = ;code = 32
char = A;code = 65
char = F;code = 70
char = M;code = 77
char = ,;code = 44
char = ;code = 32
char = n;code = 110
char = i;code = 105
char = t;code = 116
char = r;code = 114
char = o;code = 111
char = g;code = 103
char = e;code = 101
char = n;code = 110
char = ;code = 32
char = a;code = 97
char = d;code = 100
char = s;code = 115
char = o;code = 111
char = r;code = 114
char = p;code = 112
char = t;code = 116
char = i;code = 105
char = o;code = 111
char = n;code = 110
char = ,;code = 44
char = ;code = 32
char = M;code = 77
char = &;code = 38
char = #;code = 35
char = 2;code = 50
char = 4;code = 52
char = 6;code = 54
char = ;;code = 59
char = s;code = 115
char = s;code = 115
char = b;code = 98
char = a;code = 97
char = u;code = 117
char = e;code = 101
char = r;code = 114
char = ;code = 32
char = s;code = 115
char = p;code = 112
char = e;code = 101
char = c;code = 99
char = t;code = 116
char = r;code = 114
char = o;code = 111
char = s;code = 115
char = c;code = 99
char = o;code = 111
char = p;code = 112
char = y;code = 121
char = ,;code = 44
char = ;code = 32
char = a;code = 97
char = n;code = 110
char = d;code = 100
char = ;code = 32
char = q;code = 113
char = u;code = 117
char = a;code = 97
char = n;code = 110
char = t;code = 116
char = u;code = 117
char = m;code = 109
char = ;code = 32
char = c;code = 99
char = h;code = 104
char = e;code = 101
char = m;code = 109
char = i;code = 105
char = s;code = 115
char = t;code = 116
char = r;code = 114
char = y;code = 121
char = ;code = 32
char = m;code = 109
char = e;code = 101
char = t;code = 116
char = h;code = 104
char = o;code = 111
char = d;code = 100
char = s;code = 115
char = .;code = 46
char = ;code = 32
char = T;code = 84
char = h;code = 104
char = e;code = 101
char = ;code = 32
char = s;code = 115
char = t;code = 116
char = r;code = 114
char = u;code = 117
char = c;code = 99
char = t;code = 116
char = u;code = 117
char = r;code = 114
char = a;code = 97
char = l;code = 108
char = ;code = 32
char = c;code = 99
char = h;code = 104
char = a;code = 97
char = r;code = 114
char = a;code = 97
char = c;code = 99
char = t;code = 116
char = e;code = 101
char = r;code = 114
char = i;code = 105
char = s;code = 115
char = t;code = 116
char = i;code = 105
char = c;code = 99
char = s;code = 115
char = ;code = 32
char = a;code = 97
char = n;code = 110
char = d;code = 100
char = ;code = 32
char = p;code = 112
char = h;code = 104
char = a;code = 97
char = s;code = 115
char = e;code = 101
char = ;code = 32
char = c;code = 99
char = o;code = 111
char = m;code = 109
char = p;code = 112
char = o;code = 111
char = s;code = 115
char = i;code = 105
char = t;code = 116
char = i;code = 105
char = o;code = 111
char = n;code = 110
char = ;code = 32
char = o;code = 111
char = f;code = 102
char = ;code = 32
char = F;code = 70
char = e;code = 101
char = 2;code = 50
char = O;code = 79
char = 3;code = 51
char = ;code = 32
char = d;code = 100
char = e;code = 101
char = p;code = 112
char = o;code = 111
char = s;code = 115
char = i;code = 105
char = t;code = 116
char = s;code = 115
char = ;code = 32
char = d;code = 100
char = e;code = 101
char = p;code = 112
char = e;code = 101
char = n;code = 110
char = d;code = 100
char = ;code = 32
char = o;code = 111
char = n;code = 110
char = ;code = 32
char = r;code = 114
char = e;code = 101
char = a;code = 97
char = c;code = 99
char = t;code = 116
char = i;code = 105
char = o;code = 111
char = n;code = 110
char = ;code = 32
char = c;code = 99
char = o;code = 111
char = n;code = 110
char = d;code = 100
char = i;code = 105
char = t;code = 116
char = i;code = 105
char = o;code = 111
char = n;code = 110
char = s;code = 115
char = ,;code = 44
char = ;code = 32
char = s;code = 115
char = o;code = 111
char = l;code = 108
char = v;code = 118
char = e;code = 101
char = n;code = 110
char = t;code = 116
char = ;code = 32
char = t;code = 116
char = y;code = 121
char = p;code = 112
char = e;code = 101
char = ,;code = 44
char = ;code = 32
char = c;code = 99
char = o;code = 111
char = n;code = 110
char = t;code = 116
char = e;code = 101
char = n;code = 110
char = t;code = 116
char = ;code = 32
char = o;code = 111
char = f;code = 102
char = ;code = 32
char = g;code = 103
char = r;code = 114
char = a;code = 97
char = f;code = 102
char = t;code = 116
char = e;code = 101
char = d;code = 100
char = ;code = 32
char = i;code = 105
char = r;code = 114
char = o;code = 111
char = n;code = 110
char = ;code = 32
char = o;code = 111
char = x;code = 120
char = i;code = 105
char = d;code = 100
char = e;code = 101
char = ,;code = 44
char = ;code = 32
char = a;code = 97
char = n;code = 110
char = d;code = 100
char = ;code = 32
char = p;code = 112
char = o;code = 111
char = s;code = 115
char = t;code = 116
char = -;code = 45
char = r;code = 114
char = e;code = 101
char = a;code = 97
char = c;code = 99
char = t;code = 116
char = i;code = 105
char = o;code = 111
char = n;code = 110
char = ;code = 32
char = t;code = 116
char = r;code = 114
char = e;code = 101
char = a;code = 97
char = t;code = 116
char = m;code = 109
char = e;code = 101
char = n;code = 110
char = t;code = 116
char = s;code = 115
char = .;code = 46
char = ;code = 32
char = T;code = 84
char = h;code = 104
char = e;code = 101
char = ;code = 32
char = i;code = 105
char = r;code = 114
char = o;code = 111
char = n;code = 110
char = ;code = 32
char = o;code = 111
char = x;code = 120
char = i;code = 105
char = d;code = 100
char = e;code = 101
char = ;code = 32
char = d;code = 100
char = e;code = 101
char = p;code = 112
char = o;code = 111
char = s;code = 115
char = i;code = 105
char = t;code = 116
char = s;code = 115
char = ;code = 32
char = o;code = 111
char = n;code = 110
char = ;code = 32
char = A;code = 65
char = -;code = 45
char = 3;code = 51
char = 0;code = 48
char = 0;code = 48
char = ;code = 32
char = (;code = 40
char = i;code = 105
char = m;code = 109
char = p;code = 112
char = r;code = 114
char = e;code = 101
char = g;code = 103
char = n;code = 110
char = a;code = 97
char = t;code = 116
char = e;code = 101
char = d;code = 100
char = ;code = 32
char = b;code = 98
char = y;code = 121
char = ;code = 32
char = t;code = 116
char = h;code = 104
char = e;code = 101
char = ;code = 32
char = F;code = 70
char = e;code = 101
char = (;code = 40
char = a;code = 97
char = c;code = 99
char = a;code = 97
char = c;code = 99
char = );code = 41
char = 3;code = 51
char = ;code = 32
char = s;code = 115
char = o;code = 111
char = l;code = 108
char = u;code = 117
char = t;code = 116
char = i;code = 105
char = o;code = 111
char = n;code = 110
char = ;code = 32
char = i;code = 105
char = n;code = 110
char = ;code = 32
char = i;code = 105
char = s;code = 115
char = o;code = 111
char = p;code = 112
char = r;code = 114
char = o;code = 111
char = p;code = 112
char = a;code = 97
char = n;code = 110
char = o;code = 111
char = l;code = 108
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char = e;code = 101
char = s;code = 115
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char = t;code = 116
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char = e;code = 101
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char = d;code = 100
char = i;code = 105
char = s;code = 115
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char = r;code = 114
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char = t;code = 116
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char = 0;code = 48
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char = ;code = 32
char = t;code = 116
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char = e;code = 101
char = ;code = 32
char = F;code = 70
char = e;code = 101
char = (;code = 40
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char = c;code = 99
char = a;code = 97
char = c;code = 99
char = );code = 41
char = 3;code = 51
char = ;code = 32
char = s;code = 115
char = o;code = 111
char = l;code = 108
char = u;code = 117
char = t;code = 116
char = i;code = 105
char = o;code = 111
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char = ;code = 32
char = i;code = 105
char = n;code = 110
char = ;code = 32
char = c;code = 99
char = a;code = 97
char = r;code = 114
char = b;code = 98
char = o;code = 111
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char = ;code = 32
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char = t;code = 116
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char = e;code = 101
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char = ;code = 32
char = p;code = 112
char = h;code = 104
char = a;code = 97
char = s;code = 115
char = e;code = 101
char = ;code = 32
char = i;code = 105
char = s;code = 115
char = ;code = 32
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char = ;code = 32
char = a;code = 97
char = d;code = 100
char = d;code = 100
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char = t;code = 116
char = o;code = 111
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char = r;code = 114
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char = ;code = 32
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char = e;code = 101
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char = f;code = 102
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char = ;code = 32
char = g;code = 103
char = /;code = 47
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result sql = Fe2O3/SiO2 nanocomposites based on fumed silica A-300 (S(BET)=337 m2/g) with iron oxide deposits at different content were synthesized using Fe(III) acetylacetonate (Fe(acac)3) dissolved in isopropyl alcohol or carbon tetrachloride for impregnation of the nanosilica powder at different amounts of Fe(acac)3 then oxidized in air at 400-900 degrees C. Samples with Fe(acac)3 adsorbed onto nanosilica and samples with Fe2O3/SiO2 including 6-17 wt% of Fe2O3 were investigated using XRD, XPS, TG/DTA, TPD MS, FTIR, AFM, nitrogen adsorption, Mössbauer spectroscopy, and quantum chemistry methods. The structural characteristics and phase composition of Fe2O3 deposits depend on reaction conditions, solvent type, content of grafted iron oxide, and post-reaction treatments. The iron oxide deposits on A-300 (impregnated by the Fe(acac)3 solution in isopropanol) treated at 500-600 degrees C include several phases characterized by different nanoparticle size distributions; however, in the case of impregnation of A-300 by the Fe(acac)3 solution in carbon tetrachloride only alpha-Fe2O3 phase is formed in addition to amorphous Fe2O3. The Fe2O3/SiO2 materials remain loose (similar to the A-300 matrix) at the bulk density of 0.12-0.15 g/cm3 and S(BET)=265-310 m2/g.
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char = s;code = 115
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char = a;code = 97
char = n;code = 110
char = d;code = 100
char = ;code = 32
char = c;code = 99
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char = a;code = 97
char = c;code = 99
char = t;code = 116
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char = r;code = 114
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char = z;code = 122
char = a;code = 97
char = t;code = 116
char = i;code = 105
char = o;code = 111
char = n;code = 110
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char = o;code = 111
char = f;code = 102
char = ;code = 32
char = F;code = 70
char = e;code = 101
char = 2;code = 50
char = O;code = 79
char = 3;code = 51
char = /;code = 47
char = S;code = 83
char = i;code = 105
char = O;code = 79
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char = a;code = 97
char = n;code = 110
char = o;code = 111
char = c;code = 99
char = o;code = 111
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char = o;code = 111
char = s;code = 115
char = i;code = 105
char = t;code = 116
char = e;code = 101
char = s;code = 115
char = .;code = 46
result sql = Synthesis and characterization of Fe2O3/SiO2 nanocomposites.
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char = i;code = 105
char = s;code = 115
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char = t;code = 116
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char = o;code = 111
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char = n;code = 110
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char = t;code = 116
char = h;code = 104
char = e;code = 101
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char = a;code = 97
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char = e;code = 101
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char = f;code = 102
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char = m;code = 109
char = p;code = 112
char = r;code = 114
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char = g;code = 103
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char = t;code = 116
char = i;code = 105
char = o;code = 111
char = n;code = 110
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char = o;code = 111
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char = ;code = 32
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char = 3;code = 51
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char = 0;code = 48
char = ;code = 32
char = b;code = 98
char = y;code = 121
char = ;code = 32
char = t;code = 116
char = h;code = 104
char = e;code = 101
char = ;code = 32
char = F;code = 70
char = e;code = 101
char = (;code = 40
char = a;code = 97
char = c;code = 99
char = a;code = 97
char = c;code = 99
char = );code = 41
char = 3;code = 51
char = ;code = 32
char = s;code = 115
char = o;code = 111
char = l;code = 108
char = u;code = 117
char = t;code = 116
char = i;code = 105
char = o;code = 111
char = n;code = 110
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char = i;code = 105
char = n;code = 110
char = ;code = 32
char = c;code = 99
char = a;code = 97
char = r;code = 114
char = b;code = 98
char = o;code = 111
char = n;code = 110
char = ;code = 32
char = t;code = 116
char = e;code = 101
char = t;code = 116
char = r;code = 114
char = a;code = 97
char = c;code = 99
char = h;code = 104
char = l;code = 108
char = o;code = 111
char = r;code = 114
char = i;code = 105
char = d;code = 100
char = e;code = 101
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char = a;code = 97
char = l;code = 108
char = p;code = 112
char = h;code = 104
char = a;code = 97
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char = F;code = 70
char = e;code = 101
char = 2;code = 50
char = O;code = 79
char = 3;code = 51
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char = p;code = 112
char = h;code = 104
char = a;code = 97
char = s;code = 115
char = e;code = 101
char = ;code = 32
char = i;code = 105
char = s;code = 115
char = ;code = 32
char = f;code = 102
char = o;code = 111
char = r;code = 114
char = m;code = 109
char = e;code = 101
char = d;code = 100
char = ;code = 32
char = i;code = 105
char = n;code = 110
char = ;code = 32
char = a;code = 97
char = d;code = 100
char = d;code = 100
char = i;code = 105
char = t;code = 116
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char = o;code = 111
char = n;code = 110
char = ;code = 32
char = t;code = 116
char = o;code = 111
char = ;code = 32
char = a;code = 97
char = m;code = 109
char = o;code = 111
char = r;code = 114
char = p;code = 112
char = h;code = 104
char = o;code = 111
char = u;code = 117
char = s;code = 115
char = ;code = 32
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char = e;code = 101
char = 2;code = 50
char = O;code = 79
char = 3;code = 51
char = .;code = 46
char = ;code = 32
char = T;code = 84
char = h;code = 104
char = e;code = 101
char = ;code = 32
char = F;code = 70
char = e;code = 101
char = 2;code = 50
char = O;code = 79
char = 3;code = 51
char = /;code = 47
char = S;code = 83
char = i;code = 105
char = O;code = 79
char = 2;code = 50
char = ;code = 32
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char = a;code = 97
char = t;code = 116
char = e;code = 101
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char = e;code = 101
char = m;code = 109
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char = i;code = 105
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char = l;code = 108
char = o;code = 111
char = o;code = 111
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char = e;code = 101
char = ;code = 32
char = (;code = 40
char = s;code = 115
char = i;code = 105
char = m;code = 109
char = i;code = 105
char = l;code = 108
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char = 0;code = 48
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char = a;code = 97
char = t;code = 116
char = r;code = 114
char = i;code = 105
char = x;code = 120
char = );code = 41
char = ;code = 32
char = a;code = 97
char = t;code = 116
char = ;code = 32
char = t;code = 116
char = h;code = 104
char = e;code = 101
char = ;code = 32
char = b;code = 98
char = u;code = 117
char = l;code = 108
char = k;code = 107
char = ;code = 32
char = d;code = 100
char = e;code = 101
char = n;code = 110
char = s;code = 115
char = i;code = 105
char = t;code = 116
char = y;code = 121
char = ;code = 32
char = o;code = 111
char = f;code = 102
char = ;code = 32
char = 0;code = 48
char = .;code = 46
char = 1;code = 49
char = 2;code = 50
char = -;code = 45
char = 0;code = 48
char = .;code = 46
char = 1;code = 49
char = 5;code = 53
char = ;code = 32
char = g;code = 103
char = /;code = 47
char = c;code = 99
char = m;code = 109
char = 3;code = 51
char = ;code = 32
char = a;code = 97
char = n;code = 110
char = d;code = 100
char = ;code = 32
char = S;code = 83
char = (;code = 40
char = B;code = 66
char = E;code = 69
char = T;code = 84
char = );code = 41
char = =;code = 61
char = 2;code = 50
char = 6;code = 54
char = 5;code = 53
char = -;code = 45
char = 3;code = 51
char = 1;code = 49
char = 0;code = 48
char = ;code = 32
char = m;code = 109
char = 2;code = 50
char = /;code = 47
char = g;code = 103
char = .;code = 46
char = <;code = 60
char = b;code = 98
char = r;code = 114
char = /;code = 47
char = >;code = 62
result sql = Fe2O3/SiO2 nanocomposites based on fumed silica A-300 (S(BET)=337 m2/g) with iron oxide deposits at different content were synthesized using Fe(III) acetylacetonate (Fe(acac)3) dissolved in isopropyl alcohol or carbon tetrachloride for impregnation of the nanosilica powder at different amounts of Fe(acac)3 then oxidized in air at 400-900 degrees C. Samples with Fe(acac)3 adsorbed onto nanosilica and samples with Fe2O3/SiO2 including 6-17 wt% of Fe2O3 were investigated using XRD, XPS, TG/DTA, TPD MS, FTIR, AFM, nitrogen adsorption, Mössbauer spectroscopy, and quantum chemistry methods. The structural characteristics and phase composition of Fe2O3 deposits depend on reaction conditions, solvent type, content of grafted iron oxide, and post-reaction treatments. The iron oxide deposits on A-300 (impregnated by the Fe(acac)3 solution in isopropanol) treated at 500-600 degrees C include several phases characterized by different nanoparticle size distributions; however, in the case of impregnation of A-300 by the Fe(acac)3 solution in carbon tetrachloride only alpha-Fe2O3 phase is formed in addition to amorphous Fe2O3. The Fe2O3/SiO2 materials remain loose (similar to the A-300 matrix) at the bulk density of 0.12-0.15 g/cm3 and S(BET)=265-310 m2/g.
Publication: J Colloid Interface Sci 2009 Oct 15 ;338(2)::376-88. :doi: 10.1016/j.jcis.2009.06.044.
Publication Date: 2009 Oct 15
Study Author(s): Bogatyrev, V M;Gun'ko, V M;Galaburda, M V;Borysenko, M V;Pokrovskiy, V A;Oranska, O I;Polshin, E V;Korduban, O M;Leboda, R;Skubiszewska-Zieba, J;
Institution: National Academy of Sciences of Ukraine, Chuiko Institute of Surface Chemistry, General Naumov Street 17, 03164 Kiev, Ukraine.
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Publication Date: 2009 Oct 15
Study Author(s): Bogatyrev, V M;Gun'ko, V M;Galaburda, M V;Borysenko, M V;Pokrovskiy, V A;Oranska, O I;Polshin, E V;Korduban, O M;Leboda, R;Skubiszewska-Zieba, J;
Institution: National Academy of Sciences of Ukraine, Chuiko Institute of Surface Chemistry, General Naumov Street 17, 03164 Kiev, Ukraine.
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Fe2O3/SiO2 nanocomposites based on fumed silica A-300 (S(BET)=337 m2/g) with iron oxide deposits at different content were synthesized using Fe(III) acetylacetonate (Fe(acac)3) dissolved in isopropyl alcohol or carbon tetrachloride for impregnation of the nanosilica powder at different amounts of Fe(acac)3 then oxidized in air at 400-900 degrees C. Samples with Fe(acac)3 adsorbed onto nanosilica and samples with Fe2O3/SiO2 including 6-17 wt% of Fe2O3 were investigated using XRD, XPS, TG/DTA, TPD MS, FTIR, AFM, nitrogen adsorption, Mössbauer spectroscopy, and quantum chemistry methods. The structural characteristics and phase composition of Fe2O3 deposits depend on reaction conditions, solvent type, content of grafted iron oxide, and post-reaction treatments. The iron oxide deposits on A-300 (impregnated by the Fe(acac)3 solution in isopropanol) treated at 500-600 degrees C include several phases characterized by different nanoparticle size distributions; however, in the case of impregnation of A-300 by the Fe(acac)3 solution in carbon tetrachloride only alpha-Fe2O3 phase is formed in addition to amorphous Fe2O3. The Fe2O3/SiO2 materials remain loose (similar to the A-300 matrix) at the bulk density of 0.12-0.15 g/cm3 and S(BET)=265-310 m2/g.
PMID: 19596124
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