采用水热法和水解法相结合制备BiOCl/ZnO,并对其形貌和结构进行表征。以甲基橙(MO)为降解目标,探究了BiOCl与ZnO的质量比、催化剂的质量、MO的浓度和溶液的pH等因素对BiOCl/ZnO降解MO性能的影响,并初步探讨了BiOCl/ZnO降解MO的光催化机理以及其催化动力学过程。结果表明,当BiOCl与ZnO的质量比为53时,合成了片状BiOCl/ZnO;在紫外光照射1.5h时,0.1g所制备的BiOCl/ZnO对100mL pH为10.8的25mg/L的MO的降解率达到96.61%;BiOCl/ZnO光催化降解MO过程符合一级动力学过程,且在此过程中·O2-起主要作用。
BiOCl/ZnO composites were prepared through the combination of hydrothermal method and hydrolysis method,and the morphology and their structure were characterized.Taking methyl orange (MO) as the degradation target,the influence of the factors such as the mass ratio of BiOCl and ZnO,the quality of photocatalyst,the initial concentration and pH of MO solution on the photocatalytic performance of BiOCl/ZnO were investigated,and the photocatalytic mechanism as well as the catalytic kinetic process of MO degraded by BiOCl/ZnO were initially explored.It was found that the flaky BiOCl/ZnO was synthesized when the mass ratio of BiOCl to ZnO was 53.In the presence of ultraviolet light for 1.5h,the degradation rate of 100 mL 25mg/L MO at pH=10.8 degraded by 0.1g as-prepared BiOCl/ZnO reached up to 96.61%.The process of the photocatalytic degradation of MO degraded by BiOCl/ZnO confirmed to the first-order kinetic process,and ·O2- played a major role in the process.
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基金资助
玉林市科学研究与技术开发计划项目(玉市科202324144,玉市科202324143)
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