Electronic Modification by Transitional Metal Dopants to Tune the Oxidation Activity of Pt-CeO2-Based Catalysts
文献类型：期刊论文
| 作者 | Zhang, Jianghao ; Shan, Ruoting; Xiao, Hongfei; Hu, Shuo; Sheng, Zhenteng; Qin, Xiaoxiao; Zhang, Yuhua; Wang, Li; Li, Jinlin; Zhang, Changbin
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| 刊名 | ENVIRONMENTAL SCIENCE & TECHNOLOGY
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| 出版日期 | 2022 |
| 卷号 | 56期号:23页码:1-10 |
| 关键词 | Pt-CeO2-based catalysts electronic modification HCHO abatement bonding strength to HCHO catalytic oxidation mechanistic study |
| ISSN号 | 0013-936X |
| 英文摘要 | While utilization of transitional metals as a promoter has been extensively studied to enhance the activity of Pt-based catalysts for the oxidation of formaldehyde (HCHO), there is still a lack of well elucidated property-function relationship for the rational selection of a promoter in catalyst design. Herein, we modified a Pt/ CeO2 catalyst with two transitional metal dopants (i.e., Mn and Cu) that showed negligible influence on the physical structure of the Pt- CeO2 matrix but distinct effects on the activity of the catalyst. Complementary characterizations combined with density functional theory modeling revealed that the transitional metal dopants significantly modified the electronic structure of the catalyst and shifted the d-band of Pt to higher energy with different extents, which may tune the bonding strength of HCHO/intermediates with the Pt-CeO2 interface domain. The catalyst with moderate bonding strength (i.e., Pt-Mn/CeO2) displayed the highest reactivity under the ambient condition, while Pt-Cu/CeO2 with the highest bonding strength showed a dramatically decreased activity. No correlation was observed between the abundancy of the active oxygen and catalytic activity, likely due to the oxygen supply having a much higher rate than the rate-determining step. This work contributes to the elucidation about the property-function relationship of a transitional metal dopant in Pt-based catalysts for the oxidation of HCHO. |
| 源URL | [https://ir.rcees.ac.cn/handle/311016/48451]  |
| 专题 | 生态环境研究中心_大气污染控制中心 |
| 作者单位 | 1.Chinese Academy of Sciences 2.South Central Minzu University 3.Research Center for Eco-Environmental Sciences (RCEES) 4.University of Chinese Academy of Sciences, CAS |
| 推荐引用方式 GB/T 7714 | Zhang, Jianghao,Shan, Ruoting,Xiao, Hongfei,et al. Electronic Modification by Transitional Metal Dopants to Tune the Oxidation Activity of Pt-CeO2-Based Catalysts[J]. ENVIRONMENTAL SCIENCE & TECHNOLOGY,2022,56(23):1-10. |
| APA | Zhang, Jianghao.,Shan, Ruoting.,Xiao, Hongfei.,Hu, Shuo.,Sheng, Zhenteng.,...&Zhang, Changbin.(2022).Electronic Modification by Transitional Metal Dopants to Tune the Oxidation Activity of Pt-CeO2-Based Catalysts.ENVIRONMENTAL SCIENCE & TECHNOLOGY,56(23),1-10. |
| MLA | Zhang, Jianghao,et al."Electronic Modification by Transitional Metal Dopants to Tune the Oxidation Activity of Pt-CeO2-Based Catalysts".ENVIRONMENTAL SCIENCE & TECHNOLOGY 56.23(2022):1-10. |
入库方式： OAI收割
来源：生态环境研究中心
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