Citation: Shengpeng Mo, Peng Peng, Yinchang Pei, Taiming Shen, Qinglin Xie, Mingli Fu, Yunfa Chen, Daiqi Ye. Immobilizing ultrafine bimetallic PtAg alloy onto uniform MnO₂ microsphere as a highly active catalyst for CO oxidation[J]. Chinese Chemical Letters, ;2021, 32(6): 2057-2060. doi: 10.1016/j.cclet.2020.11.062 shu

Immobilizing ultrafine bimetallic PtAg alloy onto uniform MnO₂ microsphere as a highly active catalyst for CO oxidation

Shengpeng Mo ^{a, b, c} ,
Peng Peng ^a ,
Yinchang Pei ^a ,
Taiming Shen ^a ,
Qinglin Xie ^{a, *,} ,
Mingli Fu ^b ,
Yunfa Chen ^d ,
Daiqi Ye ^{b, *,}

a.
College of Environment Science and Engineering, Guilin University of Technology, Guilin 541004, China
b.
School of Environment and Energy, South China University of Technology, Guangzhou 510006, China
c.
Guangxi Key Laboratory of Theory and Technology for Environmental Pollution Control, Guilin University of Technology, Guilin 541004, China
d.
State Key Laboratory of Multi-Phase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China

xqinglin@hotmail.com

cedqye@scut.edu.cn

Received Date: 4 September 2020
Revised Date: 30 October 2020
Accepted Date: 26 November 2020
Available Online: 30 November 2020

Figures(4)

Herein, a facile glycol reduction route is successful employed to synthesize bimetallic PtAg alloys with homogeneous distribution of sizes and elements. Experimental studies reveal that the ultrafine PtAg alloys with well-defined sizes from around 3.3 nm to 5.8 nm are immobilized onto MnO₂ microsphere, which remarkably enhances the catalytic performances for CO oxidation. Importantly, quasi in-situ X-ray photoelectron spectroscopy (XPS) result reveals that both Mn and Pt ions on the surface of catalysts would realize alternating reduction-oxidation by CO and O₂ molecules, and the oxygen vacancy sites could be replenished and excited by gas-phase O₂.
- Bimetallic alloys,
- PtAg NPs,
- MnO₂,
- Quasi in-situ XPS,
- CO oxidation
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沈阳化工大学材料科学与工程学院沈阳 110142

Immobilizing ultrafine bimetallic PtAg alloy onto uniform MnO2 microsphere as a highly active catalyst for CO oxidation

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通讯作者: 陈斌, bchen63@163.com

Immobilizing ultrafine bimetallic PtAg alloy onto uniform MnO₂ microsphere as a highly active catalyst for CO oxidation