A simple strategy to improve Pd dispersion and enhance Pd/TiO2 catalytic activity for formaldehyde oxidation: The roles of surface defects
文献类型：期刊论文
| 作者 | Wang, Chunying; Li, Yaobin; Zhang, Changbin; Chen, Xueyan; Liu, Chunli; Weng, Weizheng; Shan, Wenpo; He, Hong
|
| 刊名 | APPLIED CATALYSIS B-ENVIRONMENTAL
 |
| 出版日期 | 2021-01 |
| 卷号 | 282页码:- |
| 关键词 | Surface defects HTR SMSI Palladium Formaldehyde |
| ISSN号 | 0926-3373 |
| 英文摘要 | Highly dispersed precious metals are critical to many important catalytic reactions and strongly affect the ac-tivity of catalysts. In this work, a simple method to stabilize noble metals on Pd/TiO2 catalyst by constructing Ti3+ defects on the surface of TiO2 supports. The TiO2 samples with different contents of Ti3+ defects were used to prepare a series of Pd/TiO2 catalysts, which were tested in formaldehyde (HCHO) oxidation. Multiple characterization results illustrated that the Ti3+ defects on TiO2 produced by hydrogen pretreatment during high temperature reduction (HTR), favored the stabilization of Pd particles through the strong metal-support interaction (SMSI). The increasing Pd dispersion induced more oxygen vacancies on the surfaces of Pd/TiO2 catalysts, because of hydrogen spillover, and further increased the electron density of Pd species. The activation of water and oxygen was also promoted to form more surface oxygen species. Therefore, the more surface defects existing, the better performance of Pd/TiO2 catalysts displayed for HCHO oxidation. |
| WOS研究方向 | Chemistry, Physical ; Engineering, Environmental ; Engineering, Chemical |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/46014]  |
| 专题 | 生态环境研究中心_水污染控制实验室 |
| 作者单位 | 1.Chinese Acad Sci, Ctr Excellence Reg Atmospher Environm, Key Lab Urban Pollutant Convers, Inst Urban Environm, Xiamen 361021, Peoples R China 2.Chinese Acad Sci, Zhejiang Key Lab Urban Environm Proc & Pollut Con, Ningbo Urban Environm Observat & Res Stn, Ningbo 315800, Peoples R Ch 3.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Joint Lab Environm Simulat & Pollut Con, Beijing 100085, Peoples R China 4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 5.Xiamen Univ, Coll Chem & Chem Engn, Dept Chem, State Key Lab Phys Chem Solid Surfaces,Natl Engn, Xiamen 361005, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Chunying,Li, Yaobin,Zhang, Changbin,et al. A simple strategy to improve Pd dispersion and enhance Pd/TiO2 catalytic activity for formaldehyde oxidation: The roles of surface defects[J]. APPLIED CATALYSIS B-ENVIRONMENTAL,2021,282:-. |
| APA | Wang, Chunying.,Li, Yaobin.,Zhang, Changbin.,Chen, Xueyan.,Liu, Chunli.,...&He, Hong.(2021).A simple strategy to improve Pd dispersion and enhance Pd/TiO2 catalytic activity for formaldehyde oxidation: The roles of surface defects.APPLIED CATALYSIS B-ENVIRONMENTAL,282,-. |
| MLA | Wang, Chunying,et al."A simple strategy to improve Pd dispersion and enhance Pd/TiO2 catalytic activity for formaldehyde oxidation: The roles of surface defects".APPLIED CATALYSIS B-ENVIRONMENTAL 282(2021):-. |
入库方式： OAI收割
来源：生态环境研究中心
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