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Assessing the Effect of the Electron-Beam Irradiation on Pd/Ga(2)O(3)Catalyst under Ambient Pressure
Wang, Yongzhao; Niu, Yiming; Gao, Tongtong; Liu, Siyang; Zhang, Bingsen
2020-10-06
Source PublicationCHEMCATCHEM
Volume12Issue:19Pages:4765-4769
AbstractIntroducing atmosphere in transmission electron microscope enables to directly observe the structural features of catalyst under working conditions. It offers the possibility to study the microstructural evolution and correlate real structures with catalytic properties at nano- or atomic-scale during catalysis. However, the damages to catalyst derived from the high energy electron-beam irradiation cannot be ignored and may lead to ambiguous conclusions, as the interaction between reactive gas molecules and active structures is only desired. Herein, the alpha-Ga(2)O(3)supported Pd catalyst was selected as a model to evaluate the potential effect of electron-beam on the surface and interface structures, which directly affect the catalytic performance, at varied atmospheres, elevated temperatures and increased electron dose rate in ambient pressure. The results indicate that the supported Pd nanoparticles could be encapsulated by GaO(x)layer when the imaging electron dose rate is higher than 100 e/angstrom(2)s under reduction and oxidizing atmosphere. Either increasing the electron dose rate or elevating the temperature exacerbates the irradiation damage to alpha-Ga(2)O(3)support. This work was expected to evaluate the effect of electron dose rate to supported catalysts under chemical environments, and provide guidance for the investigation of in-situ transmission electron microscopy under ambient pressure.
DOI10.1002/cctc.202000699
WOS IDWOS:000564848000001
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/82544
Collection中国科学院金属研究所
Recommended Citation
GB/T 7714
Wang, Yongzhao,Niu, Yiming,Gao, Tongtong,et al. Assessing the Effect of the Electron-Beam Irradiation on Pd/Ga(2)O(3)Catalyst under Ambient Pressure[J]. CHEMCATCHEM,2020,12(19):4765-4769.
APA Wang, Yongzhao,Niu, Yiming,Gao, Tongtong,Liu, Siyang,&Zhang, Bingsen.(2020).Assessing the Effect of the Electron-Beam Irradiation on Pd/Ga(2)O(3)Catalyst under Ambient Pressure.CHEMCATCHEM,12(19),4765-4769.
MLA Wang, Yongzhao,et al."Assessing the Effect of the Electron-Beam Irradiation on Pd/Ga(2)O(3)Catalyst under Ambient Pressure".CHEMCATCHEM 12.19(2020):4765-4769.
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