Zn掺杂改性TiO_2的制备及其光催化性能研究

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英文篇名：Preparation of TiO_2 doped with Zn and their photocatalytic activity 作者：赵秀琴 ; 向乾坤 英文作者：Zhao Xiuqin;Xiang Qiankun;Department of Chemistry and Environmental Engineering,Wuhan Bioengineering Institute; 关键词：溶胶-凝胶法 ; Zn掺杂改性TiO2 ; 光催化 英文关键词：sol-gel method;;Zn-doped TiO2;;photocatalysis 中文刊名：HGXC 英文刊名：New Chemical Materials 机构：武汉生物工程学院化学与环境工程系; 出版日期：2019-04-15 出版单位：化工新型材料 年：2019 期：v.47;No.559 基金：武汉市教育局重点项目(2015028) 语种：中文; 页：HGXC201904046 页数：3 CN：04 ISSN：11-2357/TQ 分类号：200-201+205

摘要

利用溶胶-凝胶法制备了Zn掺杂改性TiO_2催化剂。通过X射线衍射仪、扫描电子显微镜对制备的光催化剂进行表征,考察了该催化剂对亚甲基蓝废水的光催化降解性能。结果表明,Zn成功掺入TiO_2中,Zn掺杂改性TiO_2和纯TiO_2均属于锐钛矿TiO_2晶型。在催化剂投入量为1.5g/L、亚甲基蓝质量浓度为10mg/L、降解时间为0～2h条件下,Zn掺杂改性TiO_2催化剂对亚甲基蓝溶液的降解率超过60%,明显高于纯TiO_2的降解率。
        Zn-doped TiO_2 catalysts were successfully prepared by sol-gel method.The products were characterized by X-ray and SEM,respectively.The photocatalytic performances of samples were investigated by photocatalytic degradation of methylene blue(MB).The results showed that Zn was successfully doped into titanium dioxide,and both Zn-doped modified titanium dioxide and pure titanium dioxide belonged to a the crystal form of natase titanium dioxide.The degradation rate of MB solution by the catalyst exceeded 60%as the additive amount of Zn-doped TiO_2 catalyst was 1.5 g/L,the mass concentration of MB was 10 mg/L and degradation time of 0～2 h,which was significantly higher than that of pure titanium dioxide.

引文

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