1 3
Topics in Current Chemistry (2020) 378:6
Table 1
Preparation method and final calcination temperature of selected spinel ferrites and orthoferrites with their specific surface area, crystallite size and isoelectric
point
Crystallite sizes derived from
a
X-ray diffraction (XRD),
b
scanning electron microscopy (SEM) and
c
transmission electron microscopy (TEM) analysis
Ferrites
Specific surface
area (m
2
g
−1
)
Crystallite size (nm)
Isoelectric point
Preparation method (calcination temperature)
References
CuFe
2 O
4
48–69
30–110
b
7.3
Combination of acid leaching, chemical exchange and
ferrite process from printed circuit board sludge
Tu et al. [66–68]
CuFe
2 O
4
70
72
a
–
Microemulsion (650 °C)
Rehman et al. [69]
CoFe
2 O
4
149
20–30
c
8.1
Hydrothermal (100 °C)
Sun et al. [70]
CoFe
2 O
4
202
10–20
c
8.0
Hydrothermal (100 °C)
Sun et al. [70]
Co
0.6 Fe
0.4 Fe
2 O
4
97
14
c
2.9
Thermal decomposition (400 °C)
Duan et al. [71]
MnFe
2 O
4
48
50–80
c
6
Hydrothermal (100 °C)
Sun et al. [70]
ZnFe
2 O
4 hollow fibres
132
50
6.5
Sol–gel using kapok fibres as bio-template (700 °C)
Li et al. [72]
MgFe
2 O
4
54
25–35
c
11
Co-precipitation (500 °C)
Srivastava et al. [73]
MnFe
2 O
4
3–156
200–290
b
6.6
Co-precipitation (400 °C)
Yang et al. [74]
MnFe
2 O
4
138
30–50
c
7.5
Co-precipitation
Zhang et al. [75]
CaFe
2 O
4
5–42
15–30
c
4.7
Sol–gel in presence of citric acid (200–800 °C)
An et al. [76]
Ni
0.6 Fe
0.4 Fe
2 O
4
114
15
c
4.1
Microemulsion (400 °C)
Zeng et al. [77]
Ni
0.5 Zn
0.45 Fe
2 O
4
70
15–18
a
–
Sol combustion (400 °C)
Liu et al. [78]
BiFeO
3
8
80–120
–
Pechini (citric acid) sol–gel (500 °C)
Gao et al. [79]
LaFeO
3
21–49
1–22
a
–
Pechini (citric acid) sol–gel (500–1000 °C)
Li et al. [80]
LaFeO
3 dendrites
68
84
a
–
Hydrothermal (800 °C)
Thirumalairajan et al. [81]
LaFeO
3
4–11
27–46
a
–
Citric acid assisted sol–gel (700–900 °C)
Ismael et al. [82]
LaFeO
3
6–25
24–104
a
–
Sol–gel autocombustion (500–900 °C)
Parida et al. [83]
LaFe
0.95 Mn
0.05 O
3
20
22
–
Citric sol–gel method (600 °C)
Gong et al. [84]
LaFe
0.95 Ni
0.05 O
3
21
22
–
Citric sol–gel method (600 °C)
Gong et al. [84]
La
1–x Ti x
FeO
3 (0 < x
< 0.2)
8–40
14–23
a
–
Pechini (citric acid) sol–gel (800 °C)
Garcia-Muñoz et al. [37]
117
Reprinted from the journal
Topics in Current Chemistry (2020) 378:6
Table 1
Preparation method and final calcination temperature of selected spinel ferrites and orthoferrites with their specific surface area, crystallite size and isoelectric
point
Crystallite sizes derived from
a
X-ray diffraction (XRD),
b
scanning electron microscopy (SEM) and
c
transmission electron microscopy (TEM) analysis
Ferrites
Specific surface
area (m
2
g
−1
)
Crystallite size (nm)
Isoelectric point
Preparation method (calcination temperature)
References
CuFe
2 O
4
48–69
30–110
b
7.3
Combination of acid leaching, chemical exchange and
ferrite process from printed circuit board sludge
Tu et al. [66–68]
CuFe
2 O
4
70
72
a
–
Microemulsion (650 °C)
Rehman et al. [69]
CoFe
2 O
4
149
20–30
c
8.1
Hydrothermal (100 °C)
Sun et al. [70]
CoFe
2 O
4
202
10–20
c
8.0
Hydrothermal (100 °C)
Sun et al. [70]
Co
0.6 Fe
0.4 Fe
2 O
4
97
14
c
2.9
Thermal decomposition (400 °C)
Duan et al. [71]
MnFe
2 O
4
48
50–80
c
6
Hydrothermal (100 °C)
Sun et al. [70]
ZnFe
2 O
4 hollow fibres
132
50
6.5
Sol–gel using kapok fibres as bio-template (700 °C)
Li et al. [72]
MgFe
2 O
4
54
25–35
c
11
Co-precipitation (500 °C)
Srivastava et al. [73]
MnFe
2 O
4
3–156
200–290
b
6.6
Co-precipitation (400 °C)
Yang et al. [74]
MnFe
2 O
4
138
30–50
c
7.5
Co-precipitation
Zhang et al. [75]
CaFe
2 O
4
5–42
15–30
c
4.7
Sol–gel in presence of citric acid (200–800 °C)
An et al. [76]
Ni
0.6 Fe
0.4 Fe
2 O
4
114
15
c
4.1
Microemulsion (400 °C)
Zeng et al. [77]
Ni
0.5 Zn
0.45 Fe
2 O
4
70
15–18
a
–
Sol combustion (400 °C)
Liu et al. [78]
BiFeO
3
8
80–120
–
Pechini (citric acid) sol–gel (500 °C)
Gao et al. [79]
LaFeO
3
21–49
1–22
a
–
Pechini (citric acid) sol–gel (500–1000 °C)
Li et al. [80]
LaFeO
3 dendrites
68
84
a
–
Hydrothermal (800 °C)
Thirumalairajan et al. [81]
LaFeO
3
4–11
27–46
a
–
Citric acid assisted sol–gel (700–900 °C)
Ismael et al. [82]
LaFeO
3
6–25
24–104
a
–
Sol–gel autocombustion (500–900 °C)
Parida et al. [83]
LaFe
0.95 Mn
0.05 O
3
20
22
–
Citric sol–gel method (600 °C)
Gong et al. [84]
LaFe
0.95 Ni
0.05 O
3
21
22
–
Citric sol–gel method (600 °C)
Gong et al. [84]
La
1–x Ti x
FeO
3 (0 < x
< 0.2)
8–40
14–23
a
–
Pechini (citric acid) sol–gel (800 °C)
Garcia-Muñoz et al. [37]
117
Reprinted from the journal