The invention discloses a preparation method of three element composite photocatalyst of silver bromide / silver phosphate / carbon ball, which comprises the following steps: (1) dissolving glucose in deionized water and stirring to fully dissolve it and then fully dispersing it by ultrasonic treatment, and transfer it to a reaction kettle for hydrothermal reaction, after sufficient reaction, cooling to room temperature, over room temperature. The filter was washed with deionized water to the filtrate and then washed to the filtrate without color, and the black powder was dried. (2) the obtained carbon ball was dissolved in the deionized water, the ultrasonic dispersion was dispersed, the silver nitrate solution was added, the solution A was stirred, then the two sodium hydrogen phosphate solution was prepared, and a proper amount of sodium hydrogen phosphate solution, two sodium solution, was obtained. With the addition of potassium bromide, the solution B was stirred and the solution B was added to the solution A side by drop side by drop. After the reaction was fully stirred, the solid yellowish brown powder was obtained by static, filtration, drying and grinding. The photocatalyst can effectively improve the stability of photocatalyst and the ability to degrade pollutants.
【技术实现步骤摘要】
溴化银/磷酸银/碳球三元复合光催化剂的制备方法及应用
本专利技术属于可见光催化剂材料
,涉及一种溴化银(AgBr)/磷酸银(Ag3PO4)/碳球(CSs)三元复合光催化剂的制备方法。
技术介绍
能源与环境问题已成为当前迫切需解决的问题。半导体光催化技术因具有氧化降解有机污染物完全,不产生二次污染,易操作等优点,成为环境治理和新能源开发领域研究热点之一。Ag3PO4的间接带隙为2.36eV,可以吸收波长小于530nm的太阳光,可见光作用下量子产率高,氧化能力强因而被广泛应用于光催化领域。但由于Ag3PO4微溶于水且具有光化学腐蚀等特性影响了其在光催化过程中稳定性和光催化活性。因而寻找一种有效的方法改善Ag3PO4稳定性及提高光催化活性成为目前研究的重点。AgBr在可见光区有明显的吸收。将AgBr分散在其载体表面形成复合物时,其稳定性得到提高。近年来,关于AgBr的复合催化剂被广泛研究和应用。因为Ag3PO4的导带和价带电势低于AgBr的导带和价带电势,有利于光生电子空穴对的有效分离,使得AgBr/Ag3PO4成为可见光光催化剂研究的热点。碳球作为碳家族的一员, ...
【技术保护点】
1.溴化银/磷酸银/碳球三元复合光催化剂的制备方法,其特征在于,包括以下步骤:(1)取葡萄糖溶于去离子水中,搅拌使其充分溶解,再超声处理使其充分分散;将其转移至反应釜中,进行水热反应,充分反应后,冷却至室温,过滤,用去离子水洗涤至滤液无色再用无水乙醇洗涤至滤液无色,干燥得黑色粉末样品,备用;(2)取上述制得的碳球,溶于去离子水中,超声分散,加入硝酸银溶液,搅拌得到溶液A;再配制磷酸氢二钠溶液,取磷酸氢二钠溶液,加入溴化钾,搅拌得到溶液B;溶液A在搅拌的状态下,将溶液B逐滴加入到溶液A中,充分搅拌反应后,静置,过滤,烘干,研磨,得到固体黄褐色粉末。
【技术特征摘要】
1.溴化银/磷酸银/碳球三元复合光催化剂的制备方法,其特征在于,包括以下步骤:(1)取葡萄糖溶于去离子水中,搅拌使其充分溶解,再超声处理使其充分分散;将其转移至反应釜中,进行水热反应,充分反应后,冷却至室温,过滤,用去离子水洗涤至滤液无色再用无水乙醇洗涤至滤液无色,干燥得黑色粉末样品,备用;(2)取上述制得的碳球,溶于去离子水中,超声分散,加入硝酸银溶液,搅拌得到溶液A;再配制磷酸氢二钠溶液,取磷酸氢二钠溶液,加入溴化钾,搅拌得到溶液B;溶液A在搅拌的状态下,将溶液B逐滴加入到溶液A中,充分搅拌反应后,静置,过滤,烘干,研磨,得到固体黄褐色粉末。2.根据权利要求1所述的溴化银/磷酸银/碳球三元复合光催化剂的制备方法,其特征在于,步骤(1)中,葡萄糖的浓度为80~120g/L。3.根据权利要求1所述的溴化银/磷酸银/碳球三元复合光催化剂的制备方法,其特征在于,步骤(1)中,水热反应温度为150~180℃,反应时间为6~10h。4.根据权利要求1所述的溴化银/磷酸银/碳球三元复合光催化剂的制备方法,其特征在于,步...
【专利技术属性】
技术研发人员:樊国栋,樊苗苗,文美婷,杜世诚,
申请(专利权)人:陕西科技大学,
类型:发明
国别省市:陕西,61
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