Journal article

Revealing Atomic Structure and Oxidation States of Dopants in Charge-Ordered Nanoparticles for Migration-Promoted Oxygen-Exchange Capacity

Xiangbin Cai, Kaiyun Chen, Xiang Gao, Chao Xu, Mingzi Sun, Guanyu Liu, Xuyun Guo, Yuan Cai, Bolong Huang, Junkai Deng, Jefferson Zhe Liu, Antonio Tricoli, Ning Wang, Christian Dwyer, Ye Zhu

Chemistry of Materials | American Chemical Society | Published : 2019

Abstract

Doping of nanomaterials has become a versatile approach to tailoring their physical and chemical properties, leading to the emerging fields of solotronics and quantum-controlled catalysis. These extraordinary functionalities critically depend on the atomic arrangements and dynamic behaviors of dopants, which are however challenging to probe due to the ultrasmall volume of hosting nanomaterials and the even smaller scale of doping-induced structure variations. Here, we reveal the characteristic configurations of Ce dopants and their correlation with the remarkably enhanced oxygen-exchange capacity in <10 nm Mn3O4 nanoparticles. The element and oxidation-state sensitivity and quantification ca..

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University of Melbourne Researchers

Grants

Awarded by Research Grants Council of Hong Kong through the Early Career Scheme


Awarded by Hong Kong Polytechnic University grant


Awarded by Research Grants Council of Hong Kong


Awarded by Australian Research Council


Awarded by National Science Foundation of China


Awarded by ARC Discovery Project


Awarded by ARC Discovery Early Career Award


Awarded by Natural Science Foundation of China (NSFC) via a Youth Scientist grant


Awarded by Early Career Scheme (ECS) fund from the Research Grants Council of Hong Kong


Funding Acknowledgements

Y.Z. is thankful for the financial support from the Research Grants Council of Hong Kong through the Early Career Scheme (Project 25301617) and a Hong Kong Polytechnic University grant (Project 1-ZE6G). N.W. is thankful for the financial support from the Research Grants Council of Hong Kong (Projects C6021-14E and 16306818). J.Z.L. acknowledges the financial support from the Australian Research Council through the Discovery Project (DP180101744) and the high-performance computing facility of the National Computational Infrastructure of Australia. J.D. acknowledges the financial support from the National Science Foundation of China (Grants 51728203 and 51471126). A.T. is thankful for the financial support from the ARC Discovery Project (150101939) and the ARC Discovery Early Career Award (160100569). B.H. is thankful for the financial support from the Natural Science Foundation of China (NSFC) via a Youth Scientist grant (Grants 11504309 and 21771156) and the Early Career Scheme (ECS) fund from the Research Grants Council of Hong Kong (Grant PolyU 253026/16P).