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| 氟化改性TiO2空心微球的制备及光催化性能 | |
| 引用本文： | 钟永辉,周琪,刘家琴,王岩,陈星,吴玉程.氟化改性TiO2空心微球的制备及光催化性能[J].无机化学学报,2013,29(10):2133-2139. |
| 作者姓名： | 钟永辉 周琪 刘家琴 王岩 陈星 吴玉程 |
| 作者单位： | 1. 合肥工业大学材料科学与工程学院,合肥230009;安徽省先进功能材料与器件重点实验室,合肥230009 2. 合肥工业大学材料科学与工程学院,合肥,230009 3. 中科院合肥智能机械研究所,合肥,230031 |
| 基金项目： | 国家自然科学基金(No.51202052,No.91023030);安徽省国际科技合作计划(No.10080703017)资助项目 |
| 摘 要： | 以钛酸四丁酯为钛源、氢氟酸为氟源、乙醇为溶剂,采用溶剂热法合成了氟化改性的TiO2空心微球,并利用XRD、FESEM、FTIR、XPS等手段对氟化TiO2微球的晶体结构、形貌、分子基团以及元素形态等性质进行了表征,同时将TiO2微球应用于光催化降解甲基橙溶液。结果表明:氟化TiO2空心微球由奥斯瓦尔德熟化过程获得,其中TiO2以锐钛矿存在,氟以化学吸附态存在于TiO2的表面,形成≡Ti-F基团。相比纯TiO2,氟化TiO2空心微球光催化活性有很大提高,对初始浓度为20 mg·L-1的甲基橙溶液进行光催化降解30 min,其降解率达到98%。氟化改性TiO2空心微球光催化活性的提高是源于TiO2独特的空心微球结构以及TiO2表面≡Ti-F基团的存在。TiO2表面≡Ti-F基团有很强的吸电子能力,抑制了光生电子与空穴的复合,同时有利于羟基自由基的产生。 |
| 关 键 词： | 二氧化钛 氟化 空心微球 光催化 |
| 收稿时间： | 2013/2/27 0:00:00 |
| 修稿时间： | 4/9/2013 12:00:00 AM |
Preparation of Fluorizated TiO2 Hollow Microspheres and Their Photocatalytic Activity |
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| ZHONG Yong-Hui,ZHOU Qi,LIU Jia-Qin,WANG Yan,CHEN Xing and WU Yu-Cheng.Preparation of Fluorizated TiO2 Hollow Microspheres and Their Photocatalytic Activity[J].Chinese Journal of Inorganic Chemistry,2013,29(10):2133-2139. | |
| Authors: | ZHONG Yong-Hui ZHOU Qi LIU Jia-Qin WANG Yan CHEN Xing and WU Yu-Cheng |
| Institution: | School of Materials Science and Engieering, Hefei University of Technology, Hefei 230009, China;Anhui Key Laboratory of Advanced Functional Materials and Devices, Hefei 230009, China;School of Materials Science and Engieering, Hefei University of Technology, Hefei 230009, China;School of Materials Science and Engieering, Hefei University of Technology, Hefei 230009, China;Anhui Key Laboratory of Advanced Functional Materials and Devices, Hefei 230009, China;School of Materials Science and Engieering, Hefei University of Technology, Hefei 230009, China;Anhui Key Laboratory of Advanced Functional Materials and Devices, Hefei 230009, China;Institute of Intelligent Machines, Chinese Academy of Sciences, Hefei 230031, China;School of Materials Science and Engieering, Hefei University of Technology, Hefei 230009, China;Anhui Key Laboratory of Advanced Functional Materials and Devices, Hefei 230009, China |
| Abstract: | |
| Keywords: | titanium dioxide fluorine-modification hollow microspheres photocatalysis |
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