Preparation method of bismuth vanadate/bismuth oxyiodide/bismuth tungstate double-Z type photocatalytic material
A photocatalytic material, bismuth oxyiodide technology, applied in the field of photocatalytic degradation, can solve the problems of high photogenerated electron pair separation rate, influence on photocatalytic activity, low recombination rate, etc., achieve enhanced light absorption ability and light response ability, and good degradation effect, the effect of improving the mobility
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Embodiment 1
[0028] Weigh 1mmol of bismuth nitrate and dissolve it in 25ml of deionized water to obtain a bismuth nitrate solution; weigh 1mmol of potassium iodide and dissolve it in 10ml of deionized water to prepare a potassium iodide solution, and slowly add the potassium iodide solution dropwise into the above-mentioned bismuth nitrate solution to obtain a yellow precipitate Transfer to oven. Dry at 80°C for 10 hours to obtain bismuth oxyiodide.
[0029] Weigh 0.5g of the above-mentioned bismuth oxyiodide and disperse it in 50ml of deionized water, add 0.1g of sodium tungstate and sodium metavanadate (among them, the molar ratio is 1:1), stir vigorously for 30min, and heat it under the condition of 100℃ After reacting for 3 hours, a bismuth vanadate / bismuth oxyiodide / bismuth tungstate double Z-type photocatalyst was obtained (the ratio of bismuth tungstate and bismuth vanadate in the prepared double Z-type photocatalyst was 1:1).
Embodiment 2
[0031] Weigh 1mmol of bismuth nitrate and dissolve it in 25ml of deionized water to obtain a bismuth nitrate solution; weigh 1mmol of potassium iodide and dissolve it in 10ml of deionized water to prepare a potassium iodide solution, and slowly add the potassium iodide solution dropwise into the above-mentioned bismuth nitrate solution to obtain a yellow precipitate Transfer to oven. Dry at 90°C for 12 hours to obtain bismuth oxyiodide.
[0032] Weigh 0.5g of the above-mentioned bismuth oxyiodide and disperse it in 50ml of deionized water, add 0.1g of sodium tungstate and sodium metavanadate (among them, the molar ratio is 1:0.5), stir vigorously for 30min, and heat it under the condition of 110℃ After reacting for 4 hours, a bismuth vanadate / bismuth oxyiodide / bismuth tungstate double Z-type photocatalyst was obtained (the ratio of bismuth tungstate and bismuth vanadate in the prepared double Z-type photocatalyst was 1:0.5).
Embodiment 3
[0034] Weigh 1mmol of bismuth nitrate and dissolve it in 25ml of deionized water to obtain a bismuth nitrate solution; weigh 1mmol of potassium iodide and dissolve it in 10ml of deionized water to prepare a potassium iodide solution, and slowly add the potassium iodide solution dropwise into the above-mentioned bismuth nitrate solution to obtain a yellow precipitate Transfer to oven. Dry at 100°C for 15 hours to obtain bismuth oxyiodide.
[0035] Weigh 0.5g of the above-mentioned bismuth oxyiodide and disperse it in 50ml of deionized water, add 0.1g of sodium tungstate and sodium metavanadate (among them, the molar ratio is 0.5:1), stir vigorously for 30min, and heat it under the condition of 120℃ After reacting for 4 hours, a bismuth vanadate / bismuth oxyiodide / bismuth tungstate double Z-type photocatalyst was obtained (the ratio of bismuth tungstate and bismuth vanadate in the prepared double Z-type photocatalyst was 0.5:1).
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