摘要
以二水合氯化铜和硫代乙酰胺分别作为铜源和硫源,采用水浴法于65℃合成纳米硫化铜(CuS),然后采用水热法将纳米CuS与氧化石墨烯混合,加入抗坏血酸作为还原剂,在180℃下反应制备了纳米硫化铜/还原氧化石墨烯(CuS/RGO)复合材料。利用X射线衍射仪、X射线光电子能谱仪、拉曼光谱仪、扫描电子显微镜、比表面积及孔隙度分析仪、紫外-可见-近红外漫反射测试仪对复合材料进行了测试表征,以150W氙灯作为可见光源,在可见光照射下考察了纳米CuS、RGO和纳米CuS/RGO复合材料对亚甲基蓝(MB)的光催化降解性能。结果表明,纳米CuS均匀负载于RGO表面,复合材料的比表面积高达66.5m^2/g,在波长300~700nm范围可见光吸收性能良好。在可见光照射120min条件下,用量均为0.03g的纳米CuS、RGO、纳米CuS/RGO复合材料对MB的降解率分别为38.4%、21.3%、78.5%,用量为0.1g的纳米CuS/RGO复合材料对MB降解率达到了98.6%,说明RGO的引入极大提高了纳米CuS在可见光区域的光催化活性。
Copper chloride dihydrate was used as copper source and thioacetamide was used as sulfur source.Nano-CuS was prepared by water bath method at 65℃,then CuS/RGO nanocomposites were prepared by mixed nanoCuS with GO at 180℃ by hydrothermal method,while ascorbic acid was added as reducing agent.All composites were characterized by XRD,XPS,Raman,SEM,BET,UV-Vis,and the photocatalytic activity of nano-CuS,RGO and CuS/RGO was evaluated by degradation of methylene blue under xenon lamps(150 W)irradiation.The results showed that the nano-CuS was evenly composed with the RGO,and the specific surface area of the composite was 66.5 m^2/g,and the UV-Vis showed a outstanding visible light absorption performance.The degradation rate of 0.03 g CuS,RGO,and CuS/RGO was 38.4%,21.3%,78.5% after 120 min irradiation.The degradation rate of 0.1 g CuS/RGO reached98.6% after 120 min of irradiation,which indicated that the introduction of RGO greatly improved the photocatalytic property of CuS in the visible light region.
作者
刘亚东
徐丽慧
王黎明
沈勇
潘虹
Liu Yadong;Xu Lihui;Wang Liming;Shen Yong;Pan Hong(College of Fashion,Shanghai University of Engineering Science,Shanghai 201620;Zhejiang Key Laboratory of Clean Dyeing and Finishing Technology,Shaoxing 312000)
出处
《化工新型材料》
CAS
CSCD
北大核心
2020年第11期247-251,共5页
New Chemical Materials
基金
国家自然科学基金青年科学基金(51703123)
浙江省清洁染整技术研究重点实验室开放基金(1801)
上海工程技术大学人才行动计划腾飞计划(2018RC46-2018)。
关键词
复合材料
石墨烯
硫化铜
光催化
composite material
graphene
copper sulfide
photocatalyticity
