| 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 | |
| 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,2020,36(2):302-308. | |
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