Citation: Peng Zhang, Yitao Yang, Tian Qin, Xueqiu Wu, Yuechang Wei, Jing Xiong, Xi Liu, Yu Wang, Zhen Zhao, Jinqing Jiao, Liwei Chen. Interface engineering of Pt/CeO₂-{100} catalysts for enhancing catalytic activity in auto-exhaust carbon particles oxidation[J]. Chinese Chemical Letters, ;2025, 36(2): 110396. doi: 10.1016/j.cclet.2024.110396 shu

Interface engineering of Pt/CeO₂-{100} catalysts for enhancing catalytic activity in auto-exhaust carbon particles oxidation

Peng Zhang ^{a, 1} ,
Yitao Yang ^{a, 1} ,
Tian Qin ^{b, 1} ,
Xueqiu Wu ^a ,
Yuechang Wei ^{a, *,} ,
Jing Xiong ^a ,
Xi Liu ^{b, c} ,
Yu Wang ^{d, *,} ,
Zhen Zhao ^a ,
Jinqing Jiao ^{e, *,} ,
Liwei Chen ^b

a.
State Key Laboratory of Heavy Oil Processing, Key Laboratory of Optical Detection Technology for Oil and Gas, College of Science, China University of Petroleum, Beijing 102249, China
b.
School of Chemistry and Chemical, In-situ Center for Physical Sciences, Frontiers Science Center for Transformative Molecules, Shanghai Jiao Tong University, Shanghai 200240, China
c.
School of Chemistry and Chemical Engineering, Ningxia University, Yinchuan 750021, China
d.
School of Environmental Science and Engineering, Yancheng Institute of Technology, Yancheng 224051, China
e.
State Key Laboratory of Chemical Safety, SINOPEC Research Institute of Safety Engineering Co., Ltd., Qingdao 266071, China

weiyc@cup.edu.cn

wy252@126.com

jiaojq.qday@sinopec.com

Received Date: 31 May 2024
Revised Date: 28 August 2024
Accepted Date: 30 August 2024
Available Online: 31 August 2024

Figures(5)

Herein, we fabricate an embedding structure at the interface between Pt nanoparticles (NPs) and CeO₂-{100} nanocubes with surface defect sites (CeO₂-SDS) through quenching and gas bubbling-assisted membrane reduction methods. The in-situ substitution of Pt NPs for atomic-layer Ce lattice significantly increases the amount of reactive oxygen species from 133.68 µmol/g to 199.44 µmol/g. As a result, the distinctive geometric structure of Pt/CeO₂-SDS catalyst substantially improves the catalytic activity and stability for soot oxidation compared with the catalyst with no quenching process, i.e., its T₅₀ and TOF values are 332 ℃ and 2.915 h^-1, respectively. Combined with the results of experimental investigations and density functional theory calculations, it is unveiled that the unique embedding structure of Pt/CeO₂-SDS catalyst can facilitate significantly electron transfer from Pt to the CeO₂-{100} support, and induce the formation of interfacial [Ce-O_x-Pt₂] bond chains, which plays a crucial role in enhancing the key step of soot oxidation through the dual activation of surface lattice oxygen and molecular O₂. Such a fundamental revelation of the interfacial electronic transmission and corresponding modification strategy contributes a novel opportunity to develop high-efficient and stable noble metal catalysts at the atomic level.
- Pt NPs,
- Defective ceria,
- Nanocube,
- Catalytic oxidation,
- Soot particles
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通讯作者: 陈斌, bchen63@163.com

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沈阳化工大学材料科学与工程学院沈阳 110142

Interface engineering of Pt/CeO2-{100} catalysts for enhancing catalytic activity in auto-exhaust carbon particles oxidation

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通讯作者: 陈斌, bchen63@163.com

Interface engineering of Pt/CeO₂-{100} catalysts for enhancing catalytic activity in auto-exhaust carbon particles oxidation