摘要
以硫酸铜为铜源、沸石为载体、亚硫酸钠为还原剂,利用液相还原法制备Cu_(2)O-沸石催化剂,利用Ag对其表面进行改性制得Ag-Cu_(2)O-沸石光催化剂。通过XRD、BET对其进行结构表征,并进行单因素实验得到Ag-Cu_(2)O-沸石处理甲基橙废水的最佳条件。结果表明,Ag-Cu_(2)O-沸石光催化剂相比纯Cu_(2)O光催化效果更佳;当甲基橙溶液初始质量浓度为30 mg/L、pH=7、Ag-Cu_(2)O-沸石质量浓度为0.5 g/L时,反应90 min后对甲基橙和COD去除率分别达87.14%和73.84%。Ag-Cu_(2)O-沸石复合材料在重复使用5次后,对甲基橙和COD的去除率分别达74.69%和61.44%。
Cu_(2)O-zeolite catalyst is prepared via liquid-phase reduction method with copper sulfate as copper source,zeolite as carrier and sodium sulfite as reducing agent.Ag-Cu_(2)O-zeolite photocatalyst is prepared by using Ag to modify the surface of Cu_(2)O-zeolite. The structure of Ag-Cu_(2)O-zeolite photocatalyst is characterized by XRD and BET,and a single factor experiment is carried out to obtain the optimal conditions for the treatment of methyl orange wastewater by Ag-Cu_(2)O-zeolite.Results show that Ag-Cu_(2)O-zeolite has better photocatalytic effect than pure Cu_(2)O.The removal rates of methyl orange concentration and COD reach 87. 14% and 73. 84% respectively after 90 min of reaction when the initial concentration of methyl orange solution is 30 mg·L^(-1),p H = 7,and the dosage of Ag-Cu_(2)O-zeolite is 0. 5 g·L^(-1). The removal rates of methyl orange and COD by Ag-Cu_(2)O-zeolite can still reach 74. 69% and 61. 44% respectively after5 times of reuse.
作者
朱文德
陈志东
张静超
赵海舰
尤仁金
刘田田
赵贤广
ZHU Wen-de;CHEN Zhi-dong;ZHANG Jing-chao;ZHAO Hai-jian;YOU Ren-jin;LIU Tian-tian;ZHAO Xian-guang(School of Environmental Science and Engineering,Nanjing Tech University,Nanjing 210000,China)
出处
《现代化工》
CAS
CSCD
北大核心
2021年第2期209-213,共5页
Modern Chemical Industry
