Preparation, characterization and enhanced visible light photocatalytic activities of polyaniline/Bi₃NbO₇ nanocomposites

详细信息	查看全文 | 推荐本文 |

• 作者：Weiming Wu ; Shijing Liang ; Lijuan Shen ; Zhengxin Ding ; Huarong Zheng ; Wenyue Su ; Ling Wu ; ^{wuling@fzu.edu.cn}
• 关键词：Polyaniline/Bi3NbO7 ; Nanocomposites ; Chemical synthesis ; Photocatalysis
• 刊名：Journal of Alloys and Compounds
• 出版年：2012
• 期刊代码：45_09258388
• 类别：ms
• 出版时间：15 April, 2012
• 卷：520
• 期：Complete
• 页码：213-219
• 文件大小：1729 K

摘要

Polyaniline/Bi₃NbO₇ nanocomposites were successfully prepared by a simple chemisorption approach. Their particle sizes ranged from 25 to 50 nm. The photocatalytic activities of the as-prepared samples for the rhodamine B degradation were evaluated under visible light (420 nm 鈮?#xA0;位 鈮?#xA0;760 nm). The results indicated that the samples exhibited excellent photocatalytic activities and high activity stabilities for the degradation of rhodamine B. When the loading amount of polyaniline was 4 wt%, the obtained sample showed the highest photocatalytic activity. Its photocatalytic activity was also much higher than that of the reference sample (TiO_2鈭?em>xN_x powders). On the basis of the experimental results, photo-generated holes were detected as the main oxidation species responsible for the decomposition of rhodamine B over polyaniline/Bi₃NbO₇. Furthermore, the enhanced photocatalytic activity was mainly ascribed to the synergetic effect between polyaniline and Bi₃NbO₇.