Table 2.
S/N | Processing Technique | Reference/Source |
---|---|---|
1. | Spray pyrolysis | Walsh et al. (2008) |
2. | Sol gel technique | (Sanosh et al., 2009) |
3. | Solution combustion | (Pandharipande and Sondawale, 2016a) |
4. | Hydrolysis | (Shih et al., 2005) |
5. | Microwave | (Pandharipande and Sondawale, 2016b) |
6. | Solid state reaction | (Guo et al., 2013) |
7. | Hydrothermal | (Neira et al., 2008) |
8. | Emulsion method | (Chen et al., 2009) |
9. | Mechanochemical | (Yeong et al., 2001) |
10. | Precipitation methods including: a. Calcium carbonate (CaCO3) based wet chemical precipitation method, b. Calcium hydroxide (Ca(OH)2) based wet chemical precipitation method, c. Di-ammonium hydrogen Ortho-phosphate based wet chemical precipitation method, d. and Ortho-phosphoric acid (H3PO4) based wet chemical precipitation method. |
(Mobasherpour et al., 2007) |