首页|Tuning SMSI to stabilize metallic Pd species:A case study on Pd/TiO2 for HCHO oxidation

Tuning SMSI to stabilize metallic Pd species:A case study on Pd/TiO2 for HCHO oxidation

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Pretreatment of the carrier for supported catalysts can effectively improve the strong metal-support in-teraction(SMSI)and increase the dispersion of precious metals,which are critical to many important catalytic reactions.In this work,we tuned SMSI on Pd/TiO2 catalysts through inducing surface defects of TiO2 by pretreated with different atmospheres(H2/N2,N2,O2/N2)at the high temperature(800 ℃).Multiple characterization results illustrated that surface defects anchored Pd species and thus enhanced their dispersion.During reduction,Ti3+species formed and transferred onto the metallic Pd species and then induced SMSI,which effectively stabilize Pd species in the metallic state.The stronger MSI,the more stability of Pd species.As a case,Pd/TiO2-800H2,with strongest MSI,displayed the best HCHO oxidation performance at low temperature(10 ℃).

Pd/TiO2Surface defectsSMSIFormaldehydeStability of Pd species

Chunying Wang、Xiaofeng Liu、Jingyi Wang、Yaobin Li、Shaohua Xie、Fudong Liu、Changbin Zhang、Yuming Zheng、Wenpo Shan、Hong He

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Center for Excellence in Regional Atmospheric Environment,Key Laboratory of Urban Pollutant Conversion,Institute of Urban Environment,Chinese Academy of Sciences,Xiamen 361021,China

Zhejiang Key Laboratory of Urban Environmental Processes and Pollution Control,Ningbo Urban Environment Observation and Research Station,Chinese Academy of Sciences,Ningbo 315800,China

Department of Civil,Environmental,and Construction Engineering(CECE),Catalysis Cluster for Renewable Energy and Chemical Transformations(REACT),Nano Science Technology Center(NSTC),University of Central Florida,Orlando,FL 32816,USA

State Key Joint Laboratory of Environment Simulation and Pollution Control,Research Center for Eco-environmental Sciences,Chinese Academy of Sciences,Beijing 100085,China

State Key Joint Laboratory of Environment Simulation and Pollution Control,Research Center for Eco-environmental Sciences,Chinese Academy of Scie

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中国科学院青年创新促进会项目Science and Technology Planning Project of Xiamen CityScience and Technology Innovation"2025"major program in NingboU.S.Department of Energy(DOE)Office of Science User Facility operated for the DOE Office of Science by Brookhaven National Labor

20203103502Z201910212022Z028DE-SC0012704

2024

10.1016/j.cclet.2023.108739

中国化学快报(英文版)
中国化学会

中国化学快报(英文版)

CSTPCD
影响因子：0.771
ISSN：1001-8417
年,卷(期)：2024.35(3)
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