| 玫瑰花状铈掺杂二硫化锡的一步合成及其光催化还原Cr(Ⅵ)的性能 | |
| One-Pot Synthesis of Rose-like Ce-Doped SnS2 with Enhanced Visible-Light Photocatalytic Property for Reduction of Cr(Ⅵ) | |
| 摘要: 在温和条件下采用一步水热法成功地制备了不同含量铈掺杂的二硫化锡。X射线衍射（XRD）、扫描电镜（SEM）、能量色散X射线光谱仪（EDS）测试证明了铈掺杂的存在，同时发现了样品的玫瑰花状结构及其螺旋生长过程。通过漫反射光普（DRS）、电化学测试，详细阐述了铈掺杂对二硫化锡光吸收、带隙、导带电势、光生载流子分离效率的影响。以一定浓度的Cr（Ⅵ）溶液为模型污染物，评价了样品的光催化还原性能。结果表明铈掺杂二硫化锡的光还原能力与掺杂铈的浓度密切相关，并且最佳的铈掺杂比例是5%（n/n）。 | |
| 关键词: 掺杂 光催化 Cr(Ⅵ)的还原 电化学 能带结构 | |
| 基金项目: 海南省自然科学基金（No.217102），海南省科协青年科技英才学术创新计划项目（No.201507），海南省教育厅高等学校科学研究项目（No.Hnky2016-21）和海南省研究生创新科研课题（No.Hys2017-148）资助 | |
| Abstract: The Ce-doped SnS2 samples were prepared successfully through a one-pot hydrothermal method under mild conditions. The as-prepared SnS2 samples were characterized by X-ray diffraction (XRD) and scanning electron microscopy (SEM) equipped with Energy dispersive X-ray Spectroscopy (EDS) which confirmed the doping of Ce. The results indicated the spiral growth mode and rose-like morphology of the samples. The effects of Ce doping on the photoabsorption, band gap, the potential of conduction band and the separation efficiency of photo-induced carriers were checked by diffuse reflectance spectrum (DRS) and electrochemical examinations. The reductive abilities of the samples were evaluated by the reduction of Cr(Ⅵ) chosen as a model pollutant. The results reveal that photocatalytic properties of Ce/SnS2 were strongly dependent on the proportion of Ce ions and the optimum doping amount of Ce is 5% (n/n). | |
| Keywords: doping photocatalysis reduction of Cr(Ⅵ) electrochemistry energy band structure | |
| 投稿时间：2018-09-03 修订日期：2018-10-15 | |
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| 李国辉,孙元元,邢华隆,郑建聪,林晨晨,孙振范.玫瑰花状铈掺杂二硫化锡的一步合成及其光催化还原Cr(Ⅵ)的性能[J].无机化学学报,2019,35(2):194-202. | |
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