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| Effect of oxygen-doped C3N4 on the separation capability of the photoinduced electron-hole pairs generated by O-C3N4@TiO2 with quasi-shell-core nanostructure | |
| Bu, Yuyu; Chen, Zhuoyuan; Chen, ZY (reprint author), Chinese Acad Sci, Inst Oceanol, Key Lab Marine Environm Corros & Biofouling, 7 Nanhai Rd, Qingdao 266071, Peoples R China. | |
| 2014-10-20 | |
| 发表期刊 | ELECTROCHIMICA ACTA
 |
| 卷号 | 144页码:42-49 |
| 文章类型 | Article |
| 摘要 | In this work, the oxygen-doped C3N4@TiO2 (O-C3N4@TiO2) composites with quasi-shell-core nanostructure were fabricated by coating a monolayer or multilayers of O-C3N4 onto the surface of TiO2 nanoparticles. Compared with the C3N4@TiO2 quasi-shell-core nanocomposite, the O-C3N4@TiO2 quasi-shell-core nanocomposite exhibits a significant promotion of the photoelectrochemical and photocatalytic performance of TiO2, owing to the interfacial chemical bonds formed between the hydroxyl residues on TiO2 surface and the oxidizing groups on O-C3N4 surface induced by oxygen doping. The experimental results of UV/Vis diffuse reflectance spectroscopy, electrochemical impedance spectroscopy, photoluminescence spectroscopy and excited state electron attenuation spectroscopy further reveal that this interfacial chemical bonds formed between O-C3N4 and TiO2 can become effective transfer channels for the photogenerated electrons, help to capture the electrons from the valence band of O-C3N4 and rapidly quench the photogenerated holes of TiO2, thereby effectively reducing the recombination efficiency of the photogenerated electrons and holes. (C) 2014 Elsevier Ltd. All rights reserved. |
| 关键词 | Oxygen Doping C3n4 O-c3n4@tio2 Quasi-shell-core Nanocomposite Interface Bond Electron Transfer Channel |
| 学科领域 | Electrochemistry |
| DOI | 10.1016/j.electacta.2014.08.095 |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000343951100006 |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.qdio.ac.cn/handle/337002/23869 |
| 专题 | 海洋环境腐蚀与生物污损重点实验室 |
| 通讯作者 | Chen, ZY (reprint author), Chinese Acad Sci, Inst Oceanol, Key Lab Marine Environm Corros & Biofouling, 7 Nanhai Rd, Qingdao 266071, Peoples R China. |
| 作者单位 | Chinese Acad Sci, Inst Oceanol, Key Lab Marine Environm Corros & Biofouling, Qingdao 266071, Peoples R China |
| 第一作者单位 | 中国科学院海洋研究所 |
| 推荐引用方式 GB/T 7714 | Bu, Yuyu,Chen, Zhuoyuan,Chen, ZY . Effect of oxygen-doped C3N4 on the separation capability of the photoinduced electron-hole pairs generated by O-C3N4@TiO2 with quasi-shell-core nanostructure[J]. ELECTROCHIMICA ACTA,2014,144:42-49. |
| APA | Bu, Yuyu,Chen, Zhuoyuan,&Chen, ZY .(2014).Effect of oxygen-doped C3N4 on the separation capability of the photoinduced electron-hole pairs generated by O-C3N4@TiO2 with quasi-shell-core nanostructure.ELECTROCHIMICA ACTA,144,42-49. |
| MLA | Bu, Yuyu,et al."Effect of oxygen-doped C3N4 on the separation capability of the photoinduced electron-hole pairs generated by O-C3N4@TiO2 with quasi-shell-core nanostructure".ELECTROCHIMICA ACTA 144(2014):42-49. |
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