Enhanced Photocatalytic Performance of Carbon-Coated TiO2_(x) with Surface-Active Carbon Species
文献类型：期刊论文
| 作者 | Xu, Jun1; Deng, Feng1; Liu, Fen1,2; Yang, Longxiao1,2; Feng, Ningdong1; Wang, Qang1 |
| 刊名 | JOURNAL OF PHYSICAL CHEMISTRY C
 |
| 出版日期 | 2018-05-24 |
| 卷号 | 122期号:20页码:10948-10955 |
| DOI | 10.1021/acs.jpcc.8b02716 |
| 文献子类 | Article |
| 英文摘要 | Carbon (C) coating on the TiO2 surface has attracted extensive research interest due to the unique properties of the conjugated materials in electron transport and photoelectronic coupling ability. However, owing to the complexity of surface C species, there is no experimental study on their structure and property. Although the C-coated TiO2_(x) photocatalyst (C/TiO2_(x) and its corresponding acid-washed sample (C*/TiO2_(x)) exhibit similar visible-light absorption, their catalytic activity is quite different. According to high-resolution transmission electron microscopy, X-ray photoelectron spectroscopy, electron spin resonance, and NMR results, the only structural difference between C/TiO2_(x) and C*/TiO2_(X) lies in the surface C species. Our NMR experimental results show that several C species (including alkoxy and carboxylate, and macromolecular graphitelike C) are present in C/TiO2_(x), whereas only macromolecular graphitelike C exists in C*/TiO2_(x). Combined with the photocatalytic activity measurements, it can be deduced that the surface graphitelike C should be the active C sites, which facilitate the separation of photoinduced electron and hole and lead to the exceptionally high photocatalytic activity for C*/TiO2_(x), whereas the alkoxy and carboxylate C species that should be the recombination centers would poison seriously the surface of C/TiO2_(x). Accordingly, the hole and electron transfer mechanism in the C-coated TiO2_(x) photocatalyst is proposed. |
| WOS关键词 | VISIBLE-LIGHT PHOTOCATALYSIS ; SOLID-STATE NMR ; HYDROGEN-PRODUCTION ; CHARGE-TRANSFER ; GOLD NANORODS ; WATER ; GRAPHENE ; OXIDE ; NANOCOMPOSITE ; NANOPARTICLES |
| WOS研究方向 | Chemistry ; Science & Technology - Other Topics ; Materials Science |
| 语种 | 英语 |
| WOS记录号 | WOS:000433403400030 |
| 资助机构 | National Natural Science Foundation of China(21673283 ; National Natural Science Foundation of China(21673283 ; 21473246 ; 21473246 ; 21733013) ; 21733013) ; National Natural Science Foundation of China(21673283 ; National Natural Science Foundation of China(21673283 ; 21473246 ; 21473246 ; 21733013) ; 21733013) |
| 源URL | [http://ir.wipm.ac.cn/handle/112942/11993]  |
| 专题 | 武汉物理与数学研究所_磁共振应用研究部 |
| 作者单位 | 1.Chinese Acad Sci, State Key Lab Magnet Resonance & Atom & Mol Phys, Natl Ctr Magnet Resonance Wuhan, Wuhan Inst Phys & Math,Key Lab Magnet Resonance B, Wuhan 430071, Hubei, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Xu, Jun,Deng, Feng,Liu, Fen,et al. Enhanced Photocatalytic Performance of Carbon-Coated TiO2_(x) with Surface-Active Carbon Species[J]. JOURNAL OF PHYSICAL CHEMISTRY C,2018,122(20):10948-10955. |
| APA | Xu, Jun,Deng, Feng,Liu, Fen,Yang, Longxiao,Feng, Ningdong,&Wang, Qang.(2018).Enhanced Photocatalytic Performance of Carbon-Coated TiO2_(x) with Surface-Active Carbon Species.JOURNAL OF PHYSICAL CHEMISTRY C,122(20),10948-10955. |
| MLA | Xu, Jun,et al."Enhanced Photocatalytic Performance of Carbon-Coated TiO2_(x) with Surface-Active Carbon Species".JOURNAL OF PHYSICAL CHEMISTRY C 122.20(2018):10948-10955. |
入库方式： OAI收割
来源：武汉物理与数学研究所
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