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| 空气电极改性TiO2光催化剂的研究 | |
| 引用本文： | 黄行九,叶刚,王连超,刘伟,蔡乃才,刘锦淮.空气电极改性TiO2光催化剂的研究[J].高等学校化学学报,2003,24(8):1459-1463. |
| 作者姓名： | 黄行九 叶刚 王连超 刘伟 蔡乃才 刘锦淮 |
| 作者单位： | 1. 中国科学技术大学化学系,合肥,230026;中国科学院合肥智能机械研究所,合肥,230031 2. 中国科学院合肥智能机械研究所,合肥,230031 3. 武汉大学化学与分子科学学院,武汉,430072 |
| 基金项目： | 国家自然科学基金，60274061， |
| 摘 要： | 将TiO2/C光催化剂负载在具有合成H2O2性能的空气电极上形成双功能新型复合电极.TiO2/C光催化层的微多孔特性使新型载体保持了高效合成H2O2的优势,J=15mA/cm2时,电流效率达到82%.新型载体又为TiO2/C光催化剂获得了阳极偏压,有利于将光生电子迅速导入载体,减少了光生载流子的复合.在新型光催化体系中,光化学氧化作用与光催化氧化作用有机地统一在同一电极/溶液界面附近,造成了该界面的强氧化环境,从而使有机分子的氧化降解速度得到显著提高. |
| 关 键 词： | TiO2 复合电极 光催化 偶氮染料分子TiO2 |
| 文章编号： | 0251-0790(2003)08-1459-05 |
| 收稿时间： | 2002-09-17 |
A Study of TiO2 Photo-catalyst Modified by Air Electrode |
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| HUANG Xing-Jiu ,YE Gang ,WANG Lian-Chao ,LIU Wei ,CAI Nai-Cai ,LIU Jin-Huai.A Study of TiO2 Photo-catalyst Modified by Air Electrode[J].Chemical Research In Chinese Universities,2003,24(8):1459-1463. | |
| Authors: | HUANG Xing-Jiu YE Gang WANG Lian-Chao LIU Wei CAI Nai-Cai LIU Jin-Huai |
| Institution: | HUANG Xing-Jiu 1,2,YE Gang 1,2,WANG Lian-Chao 1,2,LIU Wei 2,CAI Nai-Cai 3,LIU Jin-Huai 2* |
| Abstract: | A novel composite electrode which has both of the functions of synthesizing H 2O 2 and photocatalysis is reported. This double function composite electrode was prepared by loading the photocatalyst TiO 2/C on a novel substrate which can synthesize H 2O 2. The porous properties of TiO 2/C photocatalysis layer can make the novel carrier synthsizing H 2O 2 efficiently. The current efficiency attained a value of 82%(J=15 mA/cm 2), and the novel carrier made TiO 2 gaining an anodic bias which is very important for improving the photocatalytic activity of TiO 2. In this novel system, photochemistry and photocatalysis oxidization were combined near the interface of electrode/solution and thus the degradation rate of organic molecules enhanced rapidly. |
| Keywords: | TiO 2 Composite electrode Photocatalysis Azo dye |
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