| Identification of Active Sites in HCHO Oxidation over TiO2-Supported Pt Catalysts | |
| Chen, Muhua1; Wang, Weizhen2; Qiu, Yuping1; Wen, He1; Li, Guangyao1; Yang, Zhiqing3; Wang, Ping1 | |
| Corresponding Author | Wang, Ping(mspwang@scut.edu.cn) |
| 2022-05-06 | |
| Source Publication | ACS CATALYSIS
 |
| ISSN | 2155-5435 |
| Volume | 12Issue:9Pages:5565-5573 |
| Abstract | The cooperative catalysis between noble metals and oxygen vacancies in reducible oxides plays an important role in many heterogeneous catalytic reactions, but definite identification of active sites remains challenging. Herein, we report an experimental identification of active sites in HCHO oxidation over TiO2-supported Pt catalysts by means of microscopic and spectroscopic techniques. Pt/TiO2, catalysts with tunable oxygen vacancy concentrations were designed and fabricated based on hydrogen spillover. A combination of aberration-corrected scanning transmission electron microscopy and electron energy loss spectroscopy allowed us to directly observe the spatial distribution of oxygen vacancies and probe its correlation with the catalytic activity. In situ diffuse reflectance infrared Fourier transform spectroscopy in combination with the online gas chromatography technique was employed to investigate the functionalities of Pt and oxygen vacancies in HCHO oxidation. Our study revealed that HCHO oxidation occurred at the Pt/TiO2-x interface via a cooperative mechanism: oxygen vacancies served as active sites for chemically absorbing HCHO molecules and the adjacent Pt site dissociatively activated O-2. |
| Keyword | cooperative catalysis oxygen vacancy metal/oxide interface formaldehyde oxidation catalytic mechanism |
| Funding Organization | National 10000-Talents Program ; Ji Hua Laboratory |
| DOI | 10.1021/acscatal.2c01150 |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | National 10000-Talents Program ; Ji Hua Laboratory[X210141TL210] |
| WOS Research Area | Chemistry |
| WOS Subject | Chemistry, Physical |
| WOS ID | WOS:000813231200001 |
| Publisher | AMER CHEMICAL SOC |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/174405 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Wang, Ping |
| Affiliation | 1.South China Univ Technol, Sch Mat Sci & Engn, Guangzhou 510641, Peoples R China 2.Chinese Acad Sci, Shenyang Natl Lab Mat Sci, Inst Met Res, Shenyang 110016, Peoples R China 3.Ji Hua Lab, Foshan 528000, Peoples R China |
| Recommended Citation GB/T 7714 | Chen, Muhua,Wang, Weizhen,Qiu, Yuping,et al. Identification of Active Sites in HCHO Oxidation over TiO2-Supported Pt Catalysts[J]. ACS CATALYSIS,2022,12(9):5565-5573. |
| APA | Chen, Muhua.,Wang, Weizhen.,Qiu, Yuping.,Wen, He.,Li, Guangyao.,...&Wang, Ping.(2022).Identification of Active Sites in HCHO Oxidation over TiO2-Supported Pt Catalysts.ACS CATALYSIS,12(9),5565-5573. |
| MLA | Chen, Muhua,et al."Identification of Active Sites in HCHO Oxidation over TiO2-Supported Pt Catalysts".ACS CATALYSIS 12.9(2022):5565-5573. |
| Files in This Item: | There are no files associated with this item. | |||||
Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.
Edit Comment