International Journal of Photoenergy / 2015 / Article / Tab 2

Research Article

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

Table 2

Synthesis methods used and relevant parameters for the preparation of various BiVO4 samples.

Sample (sample name)Synthesis methodReactantspH of precursor slurry
(pH control medium)
Treatment temperature & time

BiVO4 (Co-pre-350-24)Coprecipitation [19]30 mmol Bi(NO3)3·5H2O
30 mmol NH4VO3
4 M HNO3
2 M NH4OH
9% (sodium carboxymethylcellulose) CMCa
9 (2 M NH4OH)Calcination at 350°C, 24 h.

BiVO4 (Comb-500-3)Combustion [30]2 mmol Bi(NO3)3·5H2O
2 mmol citric acid
1 M HNO3;  
2 mmol NH4VO3
5 mmol citric acid
7.5 (2 M NH4OH)Calcination at 500°C, 3 h.

BiVO4 (Calc-450-5)Calcination [24]1 mmol Bi(NO3)3·5H2O
3 mmol K2CO3
5 mmol V2O5
1 (no pH adjustment)Calcination at 450°C, 5 h.

9% CMC weight percentages related to the total weight of prepared samples.
Samples prepared via coprecipitation synthesis were denoted by the nomenclature BiVO4 (Co-pre-YYY-YY), where YYY and YY refer to the treatment temperature and time, respectively; BiVO4 (Comb-YYY-YY) and BiVO4 (Calc-YYY-YY) denote samples prepared via combustion and calcination, respectively.