Effect of B-site substitutions on the catalytic activity of perovskites compounds: a review / Amirudin Fitri Ramly and Rasyidah Al Rozi

The objective of research are to review the B-site loading or composition on the catalytic activity of perovskite compound and to compare the performance of organic pollutants’ degradation using perovskite compounds at different B-site loading or composition. The combination of qualitative and quantative data analysis conducted from the data collection obtained from online based literature such as Science Direct, Springer, Sage and ASCE. The graphical results are obtained from the catalytic performances and characterization analysis such UV-vis spectrophotometer. Moreover, LaFeO3 was highlighted as active degradation of Methylene Blue (MB) dyes and exhibited strong visible-light photocatalytic active. LaCoO3 Photocatalytic properties especially in the degradation of the MB, Methyl oranges and neutral red dyes after 100 min reaction. LaFeO3 perovskites catalyst required time to achieve 90% degradation for 180 min with the catalyst loading of 2gL-1. LaNiO3 perovskites catalyst required 5 hours and considered less efficient compared to Fe and Co B-sites perovskites. The substitution of Ni as B-site to Co element can affect the surface area of the catalyst exhibiting maximum at x=0.5. The analysis of the degradation rate of the organic pollutant by using Fe B-site element obtain 97 percent in 4 hr duration time. Meanwhile, the lowest degradation rate of organic pollutant achieved 80 percent in 6hr duration time by using BaTiO3 perovskite. The required time to achieved 90% followed by LaCoO3 (85%) and LaNiO3 (74.5%). The data finding from previous research is follow the proposed objective of the research including managed to review B-site loading or composition on the catalytic activity of perovskite compounds. In addition, the objective to evaluate the comparative performance of organic pollutants using perovskite compounds at different B-site loading or composition was achieved.