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文章编号： 16726987（2019）02005506； DOI： 10.16351/j.16726987.2019.02.008
刘亚男， 徐成成， 姚霜霜， 万均*
(青岛科技大学 环境与安全工程学院，山东 青岛 266042）
摘要： 利用Hummers法制得了氧化石墨烯，通过固相合成法制备了二硒化钨，采用常温还原法制备银纳米粒子，将制备的二硒化钨、氧化石墨烯和尿素按照一定比例混合，通过水热合成法制备二硒化钨氮掺杂石墨烯复合物，以制备的纳米复合物为原料，与银纳米粒子在乙二胺中超声复合得到二硒化钨银/氮掺杂石墨烯纳米复合光催化剂。利用SEM、XRD、TEM等方法对制备的纳米材料进行了表征。通过光催化降解亚甲基蓝溶液研究复合光催化剂催化性能。实验结果表明：复合光催化剂中银的质量分数为20%时，降解浓度为40×10-5 mol·L-1的亚甲基蓝溶液，降解效果最佳，可达到978%，高于单纯的二硒化钨和传统的二氧化钛光催化剂。同时复合光催化剂对甲基橙、罗丹明B溶液也具有较好的光催化降解作用，降解浓度为40×10-5 mol·L-1的甲基橙、罗丹明B溶液的降解率分别为563%、623%左右。
关键词： 氧化石墨烯； 二硒化钨； 银纳米粒子； 光催化； 有机废水
中图分类号： O 643.36文献标志码： A
引用格式：刘亚男， 徐成成， 姚霜霜， 等. 二硒化钨银/氮掺杂石墨烯纳米复合光催化剂的制备及其降解有机废水\[J\]. 青岛科技大学学报（自然科学版）， 2019， 40（2）： 5560.
LIU Yanan, XU Chengcheng, YAO Shuangshuang, et al. Preparation of tungsten selenidesilver/nitrogen doped graphene nanocomposite photocatalyst and its degradation of organic wastewater\[J\]. Journal of Qingdao University of Science and Technology（Natural Science Edition), 2019, 40(2)： 5560.
Preparation of Tungsten SelenideSilver/Nitrogen Doped Graphene
Nanocomposite Photocatalyst and Its Degradation of Organic WastewaterLIU Yanan, XU Chengcheng, YAO Shuangshuang, WAN Jun
(College of Environment and Safety Engineering, Qingdao University of Science and Technology, Qingdao 266042，China)Abstract: In this paper, graphene oxide was prepared by Hummers method, and tungsten selenide was prepared by solid phase method. Silver nanoparticles were prepared by normal temperature reduction method. Then, the prepared tungsten diselenite, graphene oxide and urea were prepared as raw materials in a certain proportion. The dolomitium tungstennitrogendoped graphene complex was prepared by hydrothermal method. The prepared nanocomposites were synthesized by ultrasonic treatment with silver nanoparticles in ethylenediamine to obtain tungstensilver/nitrogendoped graphene Nanocomposite photocatalyst. The samples prepared by the experiment were characterized by SEM, XRD and TEM. The optimum concentration of silver and the optimum concentration of methylene blue were studied by photocatalytic degradation of methylene blue solution. The results show that the degradation rate is 40×10-5mol·L-1 methylene blue solution when the percentage of silver in the composite photocatalyst is 20%, and the degradation efficiency is the best, which is 978% higher than that of pure tungsten traditional titanium dioxide photocatalysts. At the same time, the photocatalytic degradation of methyl orange and rhodamine B solution was also carried out. The degradation rate of methyl orange and Rhodamine B solution was about 563% and 623%, respectively, with the degradation concentration of 40×10-5mol·L-1.
Key words:graphene oxide; tungsten selenide; silver nanoparticles; photocatalytic degradation; organic wastewater
收稿日期： 20180319
基金项目： 山东省自然科学基金项目（ZR2017MB049）.
作者简介： 刘亚男（1994—），女，硕士研究生.*通信联系人.
