第 48 卷第 6 期 Vol. 48 No. 6 2018 年 12 月 Dec 2018

所属栏目：功能材料 稀土金属掺杂氧化锌光催化剂的合成与表征

冯 晨1，王海芳1*，郭嘉华1，魏 阳1，2 （1. 中北大学 环境与安全工程学院，山西 太原 030051；2. 环境保护部华南环境科学研究所，广东 广州 510655）

摘　要：为了提高半导体氧化锌（ZnO）的光催化性能，通过稀土金属铒（Er）和钕（Nd）共掺杂ZnO的方法研究了共掺杂对ZnO内部结构的影响。采用化学沉淀法和溶剂热法合成了不同形貌的ZnO，并通过X射线衍射（XRD），扫描电子显微镜（SEM），紫外-可见漫反射光谱（UV-vis）等表征手段分析掺杂样品结构性质。研究结果显示：溶剂热法合成的ZnO晶粒尺寸较纯ZnO大幅缩小；ZnO共掺杂后有更强的紫外和可见光发射，吸收带边出现红移。稀土元素Er和Nd共掺杂ZnO可以有效提高其光催化降解效率。

关键词：氧化锌；稀土金属；催化活性；半导体

中图分类号：TB321；X703.1　　文献标识码：A　　文章编号：1009-9212（2018）06-0049-04

Synthesis and Characterization of Rare Earth Ions Co-doped ZnO

FENG Chen1, WANG Hai-fang1*, GUO Jia-hua1, WEI Yang1,2 (1.School of Environment and Safety Engineering, North University of China, Taiyuan 030051, China;2.South China Institute of Environmental Science, Ministry of Environmental Protection, Guangzhou 510655, China)

Abstract：In order to improve the photocatalytic performance of zinc oxide(ZnO), the effect of co-doping on the internal structure of ZnO was studied by co-doping ZnO with rare earth ions including Er and Nd. Different morphologies of ZnO were synthesized by chemical precipitation and solvothermal methods. The samples were determined using X-ray diffraction (XRD), scanning electron microscopy (SEM) and UV-visible diffuse reflectance spectroscopy(UV-vis). The results showed thatsizes of ZnO grains prepared by solvent-thermal methodwere much smaller than pure ZnO. After ZnO co-doping, there was stronger ultraviolet and visible light emission, and the absorption band was red shifted.It was concluded that rare earth elements Er and Nd co-doped ZnO could greatly improve the photocatalytic degradation efficiency.

Key words：zinc oxide; rare earth metal;catalytic activity; semiconductors

基金项目：广东省级财政技术研究与开发补助费用项目（PM-zx097-201601-024）。

作者简介：冯 晨（1994-），女，山西晋城人，硕士研究生，研究方向：半导体光催化剂（E-mail：545069055@qq.com）。

联 系 人：王海芳，副教授，研究方向：半导体光催化（E-mail：3523797712@qq.com）。

收稿日期：2018-12-21