Substitutional Carbon-Modified Anatase TiO2 Decahedral Plates Directly Derived from Titanium Oxalate Crystals via Topotactic Transition
文献类型：期刊论文
| 作者 | Niu, P; Wu, TT; Wen, L; Tan, J; Yang, YQ; Zheng, SJ; Liang, Y; Li, F; Irvine, JTS; Liu, G |
| 刊名 | ADVANCED MATERIALS
 |
| 出版日期 | 2018-05-17 |
| 卷号 | 30期号:20页码:- |
| 关键词 | Lithium-ion Batteries Visible-light Hydrogen Generation Storage Graphene Nitrogen Facets Growth Photocatalysis Semiconductor |
| ISSN号 | 0935-9648 |
| 英文摘要 | Changing the composition and/or structure of some metal oxides at the atomic level can significantly improve their performance in different applications. Although many strategies have been developed, the introduction of heteroatoms, particularly anions to the internal part of metal oxide particles, is still not adequate. Here, an effective strategy is demonstrated for directly preparing polycrystalline decahedral plates of substitutional carbon-doped anatase TiO2 from titanium (IV) oxalate by a thermally induced topotactic transition in an inert atmosphere. Because of the carbon concentration gradient introduced in side of the plates, the carbon-doped TiO2 (TiO2-xCx) shows an increased visible light absorption and a two orders of magnitude higher electrical conductivity than pure TiO2. Consequently, it can be used as a photocatalyst and an active material for lithium storage and shows much superior activity in generating hydroxyl radicals under visible light and greatly increased electrical-specific capacity at high charge-discharge rates. The strategy developed could also be applicable to the atomic-scale modification of other metal oxides.; Changing the composition and/or structure of some metal oxides at the atomic level can significantly improve their performance in different applications. Although many strategies have been developed, the introduction of heteroatoms, particularly anions to the internal part of metal oxide particles, is still not adequate. Here, an effective strategy is demonstrated for directly preparing polycrystalline decahedral plates of substitutional carbon-doped anatase TiO2 from titanium (IV) oxalate by a thermally induced topotactic transition in an inert atmosphere. Because of the carbon concentration gradient introduced in side of the plates, the carbon-doped TiO2 (TiO2-xCx) shows an increased visible light absorption and a two orders of magnitude higher electrical conductivity than pure TiO2. Consequently, it can be used as a photocatalyst and an active material for lithium storage and shows much superior activity in generating hydroxyl radicals under visible light and greatly increased electrical-specific capacity at high charge-discharge rates. The strategy developed could also be applicable to the atomic-scale modification of other metal oxides. |
| 学科主题 | Chemistry, Multidisciplinary ; Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied ; Physics, Condensed Matter |
| 语种 | 英语 |
| 资助机构 | Ministry of Science and Technology of China [2014CB239401]; National Science Fund of China [51422210, 21633009, 51561130157, 51521091]; Key Research Program of Frontier Sciences CAS [QYZDB-SSW-JSC039]; Newton Advanced Fellowship |
| 公开日期 | 2018-06-05 |
| 源URL | [http://ir.imr.ac.cn/handle/321006/79303]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 通讯作者 | Liu, G; Cheng, HM (reprint author), Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, 72 Wenhua Rd, Shenyang 110016, Liaoning, Peoples R China.; Liu, G (reprint author), Univ Sci & Technol China, Sch Mat Sci & Engn, 72 Wenhua Rd, Shenyang 110016, Liaoning, Peoples R China.; Cheng, HM (reprint author), Tsinghua Univ, Tsinghua Berkeley Shenzhen Inst, Low Dimens Mat & Device Lab, 1001 Xueyuan Rd, Shenzhen 518055, Peoples R China.; Cheng, HM (reprint author), King Abdulaziz Univ, Ctr Excellence Environm Studies, Jeddah 21589, Saudi Arabia. |
| 推荐引用方式 GB/T 7714 | Niu, P,Wu, TT,Wen, L,et al. Substitutional Carbon-Modified Anatase TiO2 Decahedral Plates Directly Derived from Titanium Oxalate Crystals via Topotactic Transition[J]. ADVANCED MATERIALS,2018,30(20):-. |
| APA | Niu, P.,Wu, TT.,Wen, L.,Tan, J.,Yang, YQ.,...&Cheng, HM .(2018).Substitutional Carbon-Modified Anatase TiO2 Decahedral Plates Directly Derived from Titanium Oxalate Crystals via Topotactic Transition.ADVANCED MATERIALS,30(20),-. |
| MLA | Niu, P,et al."Substitutional Carbon-Modified Anatase TiO2 Decahedral Plates Directly Derived from Titanium Oxalate Crystals via Topotactic Transition".ADVANCED MATERIALS 30.20(2018):-. |
入库方式： OAI收割
来源：金属研究所
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