阴离子对TiO2晶形的影响及光催化性能研究

doi:10.7517/j.issn.1674-0475.2013.03.003

影像科学与光化学 ›› 2013, Vol. 31 ›› Issue (3): 186-196.DOI: 10.7517/j.issn.1674-0475.2013.03.003

阴离子对TiO₂晶形的影响及光催化性能研究

韩严和, 姜金海, 蒋丽, 李宝琴, 刘璐, 陈家庆, 梁存珍

北京石油化工学院环境工程系, 北京 102617

收稿日期:2012-10-23 修回日期:2013-01-22 出版日期:2013-05-15 发布日期:2013-05-15
通讯作者: 韩严和(1976-),男,博士、副教授,主要研究方向为环境纳米开发与研究,E-mail:hanyanhe@bipt.edu.cn.
基金资助:
北京市属高等学校人才强教深化计划项目(PHR201107213);北京市属高校青年拔尖人才培育计划项目(CIT&TCD201304098);北京市优秀人才培养资助项目(2012D005005000002);北京石油化工学院青年基金重点项目(2011-01);北京石油化工学院光机电装备技术北京市重点实验室开放项目资助;北京市大学生URT资助(2012J00064).

Effect of Anion on Crystal Form of TiO₂ and Their Photocatalytic Performance

HAN Yan-he, JIANG Jin-hai, JIANG Li, LI Bao-qin, LIU Lu, CHEN Jia-qing, LIANG Cun-zhen

Department of Environmental Engineering, Beijing Institute of Petrochemical Technology, Beijing 102617, P.R.China

Received:2012-10-23 Revised:2013-01-22 Online:2013-05-15 Published:2013-05-15

摘要/Abstract

摘要： 以SO₄^2-、F^-、Cl^-和PO₄^3-作为阴离子来研究其对水热合成TiO₂(分别记为TiO₂-S、TiO₂-F、TiO₂-Cl和TiO₂-P)晶体的影响,并考察了其光催化性能.SEM显示TiO₂-S、TiO₂-F、TiO₂-Cl和TiO₂-P分别呈粒子、十面体、刺球和不规则块状.XRD图谱表明TiO₂-S和TiO₂-F为锐钛矿晶型,TiO₂-Cl为金红石晶型,而TiO₂-P为锐钛矿、金红石和板钛矿混合晶型,这一结论也被紫外-可见漫反射实验所证实.XPS能谱表明这4种TiO₂纳米材料都受到了各自阴离子掺杂的影响,光催化试验显示:它们的光催化活性顺序为: TiO₂-F>TiO₂-S>TiO₂-Cl>TiO₂-P,这表明锐钛矿的光催化活性要大于金红石和板钛矿,且具有{001}面,掺杂了F的锐钛矿光催化活性更强.

关键词: TiO₂, 光催化, {001}面, 罗丹明B

Abstract: SO₄^-2, F^-, Cl^- and PO₄^-3 were selected as anion to investigate the morphology and the crystal form of TiO₂ (named as TiO₂-S、TiO₂-F、TiO₂-Cl and TiO₂-P) prepared with hydrothermal synthesis in this study. Their photoctalytic performance were also investigated. Form SEM photo, TiO₂-S、TiO₂-F、TiO₂-Cl and TiO₂-P present shape of particle, decanedron, acanthosphere, and irregular bulk, respectively. XRD patterns showed that TiO₂-S and TiO₂-F were both anatase structure, TiO₂-Cl was rutile structure, and TiO₂-P was a mixed phase of anatase, rutile and brookite. These were indicated by the UV-Vis diffuse reflectance spectroscopy. XPS spectrum showed that four TiO₂ nanometer materials are affected by the anion doping. The photocatalytic activities of the samples were evaluated by rhodamine B degradation. The results revealed that the order of photocatalytic efficiency was TiO₂-F>TiO₂-S>TiO₂-Cl>TiO₂-P, which indicated that the photocatalytic activity of anatase with {001} facets and F was higher than rutile's and brookite's.

Key words: TiO₂, photocatalytsis, {001} facets, Rhodamine B

中图分类号:

韩严和, 姜金海, 蒋丽, 李宝琴, 刘璐, 陈家庆, 梁存珍. 阴离子对TiO₂晶形的影响及光催化性能研究[J]. 影像科学与光化学, 2013, 31(3): 186-196.

HAN Yan-he, JIANG Jin-hai, JIANG Li, LI Bao-qin, LIU Lu, CHEN Jia-qing, LIANG Cun-zhen. Effect of Anion on Crystal Form of TiO₂ and Their Photocatalytic Performance[J]. Imaging Science and Photochemistry, 2013, 31(3): 186-196.

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阴离子对TiO₂晶形的影响及光催化性能研究

Effect of Anion on Crystal Form of TiO₂ and Their Photocatalytic Performance

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