甲醇热还原法制备高分散Cu2O微米立方体及其光催化性能
Synthesis and Photocatalytic Activity of Monodispersed Cu2O Micro Cubes Prepared by a Facile Methanol Thermal Reduction Method
作者单位E-mail
陈小平 江西省科学院能源研究所, 南昌 330096 cxpjxskxy@126.com 
魏源送 江西省科学院能源研究所, 南昌 330096
中国科学院生态环境研究中心, 水污染控制实验室, 北京 100085 
 
范敏 江西省科学院能源研究所, 南昌 330096  
石金明 江西省科学院能源研究所, 南昌 330096  
桂双林 江西省科学院能源研究所, 南昌 330096  
陈泊宏 江西省科学院能源研究所, 南昌 330096  
黄顺楠 江西省科学院能源研究所, 南昌 330096  
摘要: 通过简单的甲醇热还原法制备高分散Cu2O微米立方体,制备过程中无需添加表面活性剂。利用X射线衍射(XRD)、场发射扫描电镜(FESEM)、高分辨透射电镜(HRTEM)、X射线光电子能谱(XPS)等分析测试手段对样品的物相及形貌进行表征;通过紫外可见漫反射(UV-Vis)及光致发光光谱(PL)对样品的光化学性能进行表征;样品的光催化性能通过可见光(λ>400 nm)催化降解罗丹明B染料(RhB)脱色活性进行测试表征。同时,对样品光催化性能与物理化学性能之间的内在联系进行了研究。结果表明:制备温度对样品的形态及光催化性能有着重要影响,当制备温度为140℃时,可制备得到高分散Cu2O微立方体并且其显示出最优的光催化活性;当制备温度进一步提高时,得到的样品为超细铜粉,样品的光催化性能迅速降低。
关键词: Cu2O微立方体  甲醇热还原  光催化  半导体  罗丹明B
基金项目: 中国博士后科学基金(No.2018M642596),江西省博士后日常经费(No.2018RC01),江西省科学院重点科研项目(No.2018YZD212)和江西省科学院博士后项目资助。
Abstract: Monodispersed Cu2O micro cubes were prepared via a simple methanol-thermal reduction method by controlling the reaction temperature. The samples were characterized by using several techaniques, such as X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM), X-ray photoelectroscopy (XPS). The photocatalytic activities of the samples were tested by the photodegradation of rhodamine B (RhB) under visible light irradiation with λ>400 nm. The correlation between the physical-chemical properties and the photocatalytic acitivities of the materials were also investigated. The results indicate that monodispersed Cu2O micro cubes can be prepared at 140℃ and show the best photocatalytic activity. When the preparation temperature was increased, ultrafine copper powder was obtained, and the photocatalytic performance of the sample was reduced rapidly.
Keywords: Cu2O micro cubes  methanol thermal reduction  photocatalysis  semiconductors  rhodamine B
投稿时间:2019-08-30 修订日期:2019-10-08
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陈小平,魏源送,范敏,石金明,桂双林,陈泊宏,黄顺楠.甲醇热还原法制备高分散Cu2O微米立方体及其光催化性能[J].无机化学学报,2020,35(2):302-308.
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