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采用水热法制备了Zn O以及Cu~(2+)掺杂Zn O(Cu~(2+):Zn O)纳米粉体,并将其用于光催化降解亚甲基蓝,采用X射线衍射仪(XRD)对其物相进行分析,考察了不同的表面活性剂、Cu~(2+)的掺杂量以及焙烧温度对其结构和光催化降解性能的影响。结果表明:以柠檬酸钠和十六烷基三甲基溴化铵为混合表面活性剂制备的Zn O具有最佳的光催化降解性能,其在光照65 min后,降解率达到96%。Cu~(2+)的掺杂量以及焙烧温度对Cu~(2+):Zn O样品产生较大的影响,随着Cu~(2+)的掺杂量和焙烧温度的增加,Cu~(2+):Zn O样品的光催化降解效果呈现先增加后减小的趋势,当Cu~(2+)掺杂浓度为0.01 mol、焙烧温度为600℃时,Cu~(2+):Zn O样品具有最佳的光催化降解性能,其在光照110 min后,降解率达到93%。
Zn O and Cu 2+ -doped Zn O (Cu 2+: Zn O) nanopowders were prepared by hydrothermal method and used to photocatalyze the degradation of methylene blue. X-ray diffractometry XRD. The effects of different surfactants, Cu2 + doping amount and calcination temperature on the structure and photocatalytic degradation were investigated. The results showed that Zn O prepared by using sodium citrate and cetyltrimethylammonium bromide as the mixed surfactant had the best photocatalytic degradation performance, and the degradation rate of 96% after 65 min of light irradiation. The amount of Cu2 + and the calcination temperature have a great influence on Cu2 +: Zn0 samples. With the increase of Cu2 + doping amount and calcination temperature, (2 +): The photocatalytic degradation of ZnO samples first increases and then decreases. When the Cu 2+ doping concentration is 0.01 mol and the calcination temperature is 600 ℃, the Cu 2+: The Zn O sample has the best photocatalytic degradation performance, and its degradation rate reaches 93% after 110 min of light irradiation.