中国光学, 2014, 7 (1): 124, 网络出版: 2014-02-26   

镉掺杂氧化锌纳米花的制备及其光催化活性

Synthesis and characterization of Cd-doped ZnO nanoflowers and its photocatalytic activity
作者单位
长春理工大学 理学院 国际纳米光子学与生物光子学联合研究中心,吉林 长春 130022
摘要
以氯化锌、氯化镉、氢氧化钠为原料,采用水热法合成Cd掺杂纳米花状ZnO光催化剂,并通过该样品对罗丹明B水溶液的降解来研究其光催化活性。利用X射线衍射(XRD)、扫描电子显微镜(SEM)、X射线能量色散谱(EDS)、光致发光谱(PL)及紫外-可见分光光度计(UV-Vis)等测试手段对材料物性进行表征。实验结果表明:当掺杂Cd2+时,样品形貌发生变化、粒径减小; 掺杂Cd2+后的ZnO的吸收边和紫外峰对比于纯ZnO均发生红移,禁带宽度由324 eV 减小到316 eV。通过光催化实验分析可知,掺杂后纳米ZnO光催化剂对罗丹明B 水溶液的降解率有所提高,光照3 h其降解率高达98%,说明与纯ZnO相比,Cd掺杂ZnO纳米花具有更高的光催化活性。
Abstract
The flower-like Cd-doped ZnO nanostructures were synthesized by hydrothermal method using zinc chloride(ZnCl2), cadmium chloride(CdCl2), sodium hydroxide(NaOH) as reactants. Then, the photocatalytic activities of as-grown samples were investigated by photo-degradation of rhodamine B(RhB). The samples were characterized by X-ray diffraction(XRD), scanning electron microscopy(SEM), energy-dispersive X-ray analysis(EDS), photoluminescence(PL) spectroscopy, UV-visible spectroscopy. Experimental results show that with the Cd doping, the morphologies of ZnO changed greatly, and the size of ZnO became smaller. In addition, compared with the undoped ZnO, the absorption edge and the UV emission peak of the Cd-doped ZnO nanoflowers made a red shift clearly. The band gap decreased from 324 eV to 316 eV. Finally, in the photocatalytic experiment, the photocatalytic activity of Cd-doped ZnO was enhanced, and the degradation of rhodamine B(RhB) was up to 98% after the irradiation for 3 h. So the photocatalytic activities of Cd-doped ZnO nanoflowers were higher than that of the undoped ZnO.

翟英娇, 李金华, 陈新影, 宋星慧, 任航, 方铉, 方芳, 楚学影, 魏志鹏, 王晓华. 镉掺杂氧化锌纳米花的制备及其光催化活性[J]. 中国光学, 2014, 7(1): 124. ZHAI Ying-jiao, LI Jin-hua, CHEN Xin-ying, SONG Xing-hui, REN Hang, FANG Xuan, FANG Fang, CHU Xue-ying, WEI Zhi-peng, WANG Xiao-hua. Synthesis and characterization of Cd-doped ZnO nanoflowers and its photocatalytic activity[J]. Chinese Optics, 2014, 7(1): 124.

本文已被 11 篇论文引用
被引统计数据来源于中国光学期刊网
引用该论文: TXT   |   EndNote

相关论文

加载中...

关于本站 Cookie 的使用提示

中国光学期刊网使用基于 cookie 的技术来更好地为您提供各项服务,点击此处了解我们的隐私策略。 如您需继续使用本网站,请您授权我们使用本地 cookie 来保存部分信息。
全站搜索
您最值得信赖的光电行业旗舰网络服务平台!