Preparation method of bismuth molybdate-bismuth oxybromide composite visible photocatalyst
A technology based on bismuth oxybromide and visible light, applied in the direction of physical/chemical process catalysts, chemical instruments and methods, chemical/physical processes, etc., can solve the problems of high catalyst cost, harsh preparation conditions, low purity, etc., and achieve improved catalytic effect, The effect of low production cost and uniform particle size
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Embodiment 1
[0020] A preparation method of bismuth molybdate-bismuth oxybromide composite visible light catalyst, the specific steps are as follows:
[0021] (1) Preparation of bismuth molybdate-bismuth oxybromide composite visible light catalyst precursor
[0022] 5.67mmolBi(NO 3 ) 3 ·5H 2 O was dissolved in 10mL of 2mol / L nitric acid solution and ultrasonicated for 30min to obtain a colorless and transparent solution A. The molar ratio of NaBr:(NH 4 ) 6 Mo 7 o 24 4H 2 O ratio is 10:2, weigh 5 mmol NaBr and 1 mmol (NH 4 ) 6 Mo 7 o 24 4H 2 O was dissolved in deionized water to obtain colorless and transparent solutions B and C, and solution B was slowly added dropwise to solution A, mixed evenly, and then solution C was slowly added dropwise to the mixed solution obtained above, mechanically stirred for 3 hours, and then Sonicate for 1h, filter and wash to obtain the precursor of the composite visible light catalyst;
[0023] (2) Preparation of bismuth molybdate-bismuth oxybr...
Embodiment 2
[0026] A preparation method of bismuth molybdate-bismuth oxybromide composite visible light catalyst, the specific steps are as follows:
[0027] (1) Preparation of bismuth molybdate-bismuth oxybromide composite visible light catalyst precursor
[0028] 5.33mmolBi(NO 3 ) 3 ·5H 2 O was dissolved in 10mL of 2mol / L nitric acid solution and ultrasonicated for 30min to obtain a colorless and transparent solution A. The molar ratio of NaBr:(NH 4 ) 6 Mo 7 o 24 4H 2 O ratio is 10:1, weigh 5 mmol NaBr and 0.5 mmol (NH 4 ) 6 Mo 7 o 24 4H 2 O was dissolved in deionized water to obtain colorless and transparent solutions B and C, and solution B was slowly added dropwise to solution A, mixed evenly, and then solution C was slowly added dropwise to the mixed solution obtained above, mechanically stirred for 3 hours, and then Ultrasound for 1h, filtered and washed to obtain the precursor of the composite visible light catalyst;
[0029] (2) Preparation of bismuth molybdate-bismu...
Embodiment 3
[0032] A preparation method of bismuth molybdate-bismuth oxybromide composite visible light catalyst, the specific steps are as follows:
[0033] (1) Preparation of bismuth molybdate-bismuth oxybromide composite visible light catalyst precursor
[0034] 6mmolBi(NO 3 ) 3 ·5H 2 O was dissolved in 10mL of 2mol / L nitric acid solution, and ultrasonicated for 30min to obtain a colorless and transparent solution A, with a molar ratio of NaBr:(NH 4 ) 6 Mo 7 o 24 4H 2 O ratio is 10:3, weigh 5 mmol NaBr and 1.5 mmol (NH 4 ) 6 Mo 7 o 24 4H 2 O was dissolved in deionized water to obtain colorless and transparent solutions B and C, and solution B was slowly added dropwise to solution A, mixed evenly, and then solution C was slowly added dropwise to the mixed solution obtained above, mechanically stirred for 3 hours, and then Ultrasound for 1h, filtered and washed to obtain the precursor of the composite visible light catalyst;
[0035] (2) Preparation of bismuth molybdate-bism...
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