Synthesis and Optimization of Visible Light Active BiVO₄ Photocatalysts for the Degradation of RhB

Table 4

Properties and photocatalytic performance of BiVO₄ samples prepared via various synthesis methods.

Sample	Crystalline size (nm)	Band gap (eV)	Apparent photonic efficiency
BiVO4 (Co-pre-350-24)	16	2.38	0.000410
BiVO4 (Comb-500-3)	37	2.30	0.000808
BiVO4 (Calc-450-5)	30	2.39	0.00162
BiVO4 (H-140-8)	51	2.43	0.00278
BiVO4 (C+H-200-24)	25	2.38	0.0131

By Scherer formula; estimated from the diffuse reflectance spectroscopy adsorption edge.