| Bi5O7I/聚苯胺复合光催化剂的制备及光催化活性 |
| |
| 引用本文： | 王璐,李曦,唐子聪,周楠,俞峥松,董永志,李小争,魏登贵,董玉林,李全华,刘鹏. Bi5O7I/聚苯胺复合光催化剂的制备及光催化活性[J]. 无机化学学报, 2019, 35(2): 271-276 |
| |
| 作者姓名： | 王璐 李曦 唐子聪 周楠 俞峥松 董永志 李小争 魏登贵 董玉林 李全华 刘鹏 |
| |
| 作者单位： | 武汉理工大学化学化工与生命科学学院化学系 |
| |
| 基金项目： | 国家自然科学基金（No.51273155）项目资助 |
| |
| 摘 要： | 首先采用化学氧化聚合法合成聚苯胺(PANI),再采用溶剂热法制备了Bi_5O_7I/PANI复合材料,并采用X射线衍射、傅里叶变换红外光谱、场发射扫描电镜、紫外-可见漫反射光谱和荧光光谱等对所制备材料进行了表征,考察了复合材料在可见光光照条件下降解罗丹明B(RhB)的催化性能。结果表明当负载PANI后,Bi_5O_7I/PANI的复合材料都表现出优异的光催化性能。当PANI负载量在5%(w/w)时,催化效率最佳。在60 min内,其降解RhB的速率常数为Bi_5O_7I的3.9倍。捕获实验表明超氧自由基和空穴是该过程的主要活性物种。Bi_5O_7I/PANI具有优异光催化性能的原因主要在于,负载的PANI扩展了可见光吸收范围并增强了可见光吸收强度,而且PANI和Bi_5O_7I匹配的能级结构抑制了光生电子-空穴的复合效率。
|
| 关 键 词： | 光催化 Bi5O7I PANI 复合材料 紫外可见光谱 |
| 收稿时间： | 2018-10-05 |
| 修稿时间： | 2018-12-03 |
Preparation and Photocatalytic Performance of Bi5O7I/PANI Composites |
| |
| WANG Lu,LI Xi,TANG Zi-Cong,ZHOU Nan,YU Zheng-Song,DONG Yong-Zhi,LI Xiao-Zheng,WEI Deng-Gui,DONG Yu-Lin,LI Quan-Hua and LIU Peng. Preparation and Photocatalytic Performance of Bi5O7I/PANI Composites[J]. Chinese Journal of Inorganic Chemistry, 2019, 35(2): 271-276 |
| |
| Authors: | WANG Lu LI Xi TANG Zi-Cong ZHOU Nan YU Zheng-Song DONG Yong-Zhi LI Xiao-Zheng WEI Deng-Gui DONG Yu-Lin LI Quan-Hua LIU Peng |
| |
| Affiliation: | Department of Chemistry, School of Chemistry, Chemical Engineering and Life Science, Wuhan University of Technology, Wuhan 430070, China,Department of Chemistry, School of Chemistry, Chemical Engineering and Life Science, Wuhan University of Technology, Wuhan 430070, China,Department of Chemistry, School of Chemistry, Chemical Engineering and Life Science, Wuhan University of Technology, Wuhan 430070, China,Department of Chemistry, School of Chemistry, Chemical Engineering and Life Science, Wuhan University of Technology, Wuhan 430070, China,Department of Chemistry, School of Chemistry, Chemical Engineering and Life Science, Wuhan University of Technology, Wuhan 430070, China,Department of Chemistry, School of Chemistry, Chemical Engineering and Life Science, Wuhan University of Technology, Wuhan 430070, China,Department of Chemistry, School of Chemistry, Chemical Engineering and Life Science, Wuhan University of Technology, Wuhan 430070, China,Department of Chemistry, School of Chemistry, Chemical Engineering and Life Science, Wuhan University of Technology, Wuhan 430070, China,Department of Chemistry, School of Chemistry, Chemical Engineering and Life Science, Wuhan University of Technology, Wuhan 430070, China,Department of Chemistry, School of Chemistry, Chemical Engineering and Life Science, Wuhan University of Technology, Wuhan 430070, China and Department of Chemistry, School of Chemistry, Chemical Engineering and Life Science, Wuhan University of Technology, Wuhan 430070, China |
| |
| Abstract: | Polyaniline (PANI) was prepared by chemical oxidative polymerization and Bi5O7I/PANI composites were prepared by the hydrothermal method. The prepared samples were characterized by X-ray diffraction, Fourier-transform infrared spectroscopy, field emission scanning electron microscopy, UV-Vis diffuse reflectance spectroscopy and photoluminescence spectroscopy. The photocatalytic performance of Bi5O7I/PANI composites were evaluated by the degradation of RhB under the visible light irradiation. The experiment results showed that all the composites exhibited the higher degradation efficiency than Bi5O7I. When the loading of PANI was 5%(w/w), the catalytic efficiency was the best. The reaction rate constant was about 3.9 times higher than that of Bi5O7I within 60 min. The results of trapping experiments indicated that superoxide radical and holes are the main active species in the photodegradation process. The loading of PANI could expand the visible light range and enhance the light absorption. Moreover, the suitable energy structure could inhibit the recombination efficiency of photo-generated electron-hole. |
| |
| Keywords: | photocatalysis Bi5O7I PANI composites ultraviolet-visible spectra |
| 本文献已被 CNKI 等数据库收录！ |
| 点击此处可从《无机化学学报》浏览原始摘要信息 |
|
点击此处可从《无机化学学报》下载全文 |
|
