Citation: Zhou Man, Li Muhong, Hou Chujun, Li Zhongyu, Wang Yongzheng, Xiang Kun, Guo Xuefeng. Pt nanocrystallines/TiO₂ with thickness-controlled carbon layers: Preparation and activities in CO oxidation[J]. Chinese Chemical Letters, ;2018, 29(6): 787-790. doi: 10.1016/j.cclet.2018.03.010 shu

Pt nanocrystallines/TiO₂ with thickness-controlled carbon layers: Preparation and activities in CO oxidation

Zhou Man ^a,b ,
Li Muhong ^a ,
Hou Chujun ^b ,
Li Zhongyu ^b ,
Wang Yongzheng ^a ,
Xiang Kun ^a ,
Guo Xuefeng ^a,,

a.
Key Laboratory of Mesoscopic Chemistry of MOE, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China
b.
School of Petrochemical Engineering, Changzhou University, Changzhou 213164, China

Corresponding author: Guo Xuefeng, guoxf@nju.edu.cn
Received Date: 9 January 2018
Revised Date: 2 March 2018
Accepted Date: 6 March 2018
Available Online: 9 June 2018

Figures(6)

In this work, a series of Pt nanocrystallines (Pt NCs) supported on TiO₂ substrate with controlled thickness of carbon layers (C-Pt/TiO₂) were synthesized. Well-dispersed Pt NCs were facilely synthesized at room temperature by a photo-reduction process in lytropic liquid crystal (LCs). Surface tuning of the carbon layers on Pt/TiO₂ catalysts was achieved by varying the calcination atmospheres (in argon, air, and oxygen) and characterized by XPS and HRTEM. The influence of the coated carbon layers on the catalytic activity of catalysts is investigated by CO oxidation reaction which presented the following ranks:C-Pt/TiO₂-O₂ > C-Pt/TiO₂-Air > C-Pt/TiO₂-Ar. It is found that the carbon layer coating can stabilize the Pt NCs and enable them anti-sintering at high temperature. This finding provides new insight into understanding the C-Pt/TiO₂ ternary system for tuning their catalytic performance.
- Photoreduction,
- Pt nanocrystallines,
- Carbon layers,
- CO oxidation,
- Anti-sintering
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沈阳化工大学材料科学与工程学院沈阳 110142

Pt nanocrystallines/TiO2 with thickness-controlled carbon layers: Preparation and activities in CO oxidation

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通讯作者: 陈斌, bchen63@163.com

Pt nanocrystallines/TiO₂ with thickness-controlled carbon layers: Preparation and activities in CO oxidation