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Premodified Surface Method to Obtain Ultra-Highly Dispersed Metals and their 3D Structure Control on an Oxide Single-Crystal Surface
| Title: | Premodified Surface Method to Obtain Ultra-Highly Dispersed Metals and their 3D Structure Control on an Oxide Single-Crystal Surface |
| Authors: | Takakusagi, Satoru Browse this author →KAKEN DB | | Iwasawa, Yasuhiro Browse this author | | Asakura, Kiyotaka Browse this author →KAKEN DB |
| Keywords: | Premodified surface method | | Heterogeneous catalysts | | Single meal dispersion | | 3D structure | | PTRF-XAFS |
| Issue Date: | Jul-2019 |
| Publisher: | Wiley-Blackwell |
| Journal Title: | Chemical record |
| Volume: | 19 |
| Issue: | 7 |
| Start Page: | 1244 |
| End Page: | 1255 |
| Publisher DOI: | 10.1002/tcr.201800088 |
| Abstract: | Precise control of the three-dimensional (3D) structure of highly dispersed metal species such as metal complexes and clusters attached to an oxide surface has been important for the development of next-generation high-performance heterogeneous catalysts. However, this is not easily achieved for the following reasons. (1) Metal species are easily aggregated on an oxide surface, which makes it difficult to control their size and orientation definitely. (2) Determination of the 3D structure of the metal species on an oxide powder surface is hardly possible. To overcome these difficulties, we have developed the premodified surface method, where prior to metal deposition, the oxide surface is premodified with a functional organic molecule that can strongly coordinate to a metal atom. This method has successfully provided a single metal dispersion on an oxide single-crystal surface with the 3D structure precisely determined by polarization-dependent total reflection fluorescence X-ray absorption fine structure (PTRF-XAFS). Here we describe our recent results on ultra-high dispersions of various metal atoms on TiO2(110) surfaces premodified with mercapto compounds, and show the possibility of fine tuning and orientation control of the surface metal 3D structures. |
| Rights: | This is the peer reviewed version of the following article: S. Takakusagi, Y. Iwasawa, K. Asakura, Premodified Surface Method to Obtain Ultra-Highly Dispersed Metals and their 3D Structure Control on an Oxide Single-Crystal Surface, Chem. Rec. 2019, Vol. 19 Issue 7, p. 1244-1255, which has been published in final form at https://doi.org/10.1002/tcr.201800088 . This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions. |
| Type: | article (author version) |
| URI: | http://hdl.handle.net/2115/78812 |
| Appears in Collections: | 触媒科学研究所 (Institute for Catalysis) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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Submitter: 高草木 達
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