Preparation method of tantalum oxynitride/bismuth oxide/sulfur-doped bismuth oxychloride composite material
A technology of tantalum oxynitride and composite materials, applied in chemical instruments and methods, chemical/physical processes, physical/chemical process catalysts, etc., can solve problems such as weakening the oxidative ability of BiOCl, and achieve the goal of promoting the separation of photogenerated carriers and enhancing visible light. Effectiveness of absorption and photogenerated carrier separation efficiency, simple operation
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Embodiment 1
[0045] Weigh 0.4 mmol of tantalum chloride, 0.6 mmol of sodium stannate trihydrate, 2 mmol of bismuth nitrate pentahydrate and 3 mmol of thiourea, respectively, and disperse them in polytetrafluoroethylene containing 30 mL of deionized water, then place in a stirrer The mixture was stirred at a rate of 500 r / min and a stirring time of 20 min to make it fully react. After stirring, the polytetrafluoroethylene containing the suspension was transferred to the reaction kettle, placed in an oven, and reacted under hydrothermal conditions at 200° C. for 24 hours. After the reaction environment was cooled to room temperature, the synthesized product was taken out, centrifuged (rotation speed 10000r / min, duration 3min), washed (deionized water 2 times, absolute ethanol 3 times) and dried (drying temperature 70 ℃, drying time 10h ) to get TaON / Bi 2 O 3 / S-BiOCl composite.
[0046] figure 1 Medium TaON / Bi 2 O 3 The XRD patterns of / S-BiOCl composites show that TaON, Bi 2 O 3 The...
Embodiment 2
[0050] Weigh 0.1 mmol of tantalum chloride, 0.1 mmol of sodium stannate trihydrate, 0.5 mmol of bismuth nitrate pentahydrate and 0.5 mmol of thiourea, respectively, and disperse them in polytetrafluoroethylene containing 10 mL of deionized water. Stir on a stirrer with a stirring rate of 200 r / min and a stirring time of 10 min to make it fully react. After stirring, the polytetrafluoroethylene containing the suspension was transferred to the reaction kettle, placed in an oven, and reacted under hydrothermal conditions at 160° C. for 1 h. After the reaction environment was cooled to room temperature, the synthesized product was taken out and subjected to centrifugation (rotation speed 8000r / min, duration 1min), washing (deionized water 3 times, absolute ethanol 2 times) and drying (drying temperature 50°C, drying time 6h) ) to get TaON / Bi 2 O 3 / S-BiOCl composite.
Embodiment 3
[0052] Weigh 0.6 mmol of tantalum chloride, 1 mmol of sodium stannate trihydrate, 2.5 mmol of bismuth nitrate pentahydrate and 1.5 mmol of thiourea respectively, and disperse them in polytetrafluoroethylene containing 50 mL of deionized water, followed by stirring. Stir on the device, the stirring rate is 800 r / min, and the stirring time is 40 min to make it fully react. After stirring, the polytetrafluoroethylene containing the suspension was transferred to the reaction kettle, placed in an oven, and reacted under hydrothermal conditions at 180° C. for 12 h. After the reaction environment was cooled to room temperature, the synthesized product was taken out, centrifuged (rotation speed 12000r / min, duration 2min), washed (deionized water 2 times, absolute ethanol 2 times) and dried (drying temperature 80 ℃, drying time 15h ) to get TaON / Bi 2 O 3 / S-BiOCl composite.
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