【摘要】 采用生物效应灯模拟自然光源 ,研究氯化亚铜水解法制备的超细颗粒Cu2 O对对硝基苯酚的光催化降解作用 .结果表明 ,1 1 2mg·l- 1 ,2 2 4mg·l- 1 和 44 8mg·l- 1 对硝基苯酚 1 0h的降解率均达到 90 % ,降解反应符合一级反应动力学 ,且 7次重复使用试验显示 ,催化剂的使用寿命比硼氢化钠法制备的催化剂明显延长 ,降解的主要中间产物为对苯醌与对苯二酚 .更多还原

【Abstract】 Fine particles of cuprous oxide(Cu 2O)were prepared from the hydrolysis of cuprous chloride(CuCl)and applied as photocatalyst in the heterogeneous photocatalytic degradation of p-nitrophenol.Under the irradiation of an artificial solar device,the degradation efficiencies of p-nitrophenol solutions of 11.2mg·l -1 ,22.4mg·l -1 and 44.8mg·l -1 exceeded 90% after 10h irradiation,while the degradation process was in accordance with first order reaction characteristics.Moreover,the catallyst was reused in seven cycles with slight decrease in photocatalytic capacity,showing longer working time compared with that prepared by NaBH 4 reduction method.Besides,the major intermediates of the heterogeneous photocatalytic degradation for p-nitrophenol were p-benzoquinone and hydroquinone.更多还原