Chinese Journal of Catalysis ›› 2024, Vol. 61: 54-70.DOI: 10.1016/S1872-2067(24)60012-4

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Rare earth-incorporated high entropy oxides for energy and environmental catalysis

Yuou Lia,b, Ke Wanga,b, Xiaomei Wanga,b, Zijian Wanga,b, Jing Xua,b, Meng Zhaoa,b, Xiao Wanga,b,*(), Shuyan Songa,b,*(), Hongjie Zhanga,b,c,*()   

  1. aState Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, Jilin, China
    bSchool of Applied Chemistry and Engineering, University of Science and Technology of China, Hefei 230026, Anhui, China
    cDepartment of Chemistry, Tsinghua University, Beijing 100084, China
  • Received:2024-02-12 Accepted:2024-03-13 Online:2024-06-18 Published:2024-06-20
  • Contact: * E-mail: wangxiao@ciac.ac.cn (X. Wang),songsy@ciac.ac.cn (S. Song),hongjie@ciac.ac.cn (H. Zhang).
  • About author:Xiao Wang received his BSc degree in Chemistry in 2008 from Jilin University. Then, he joined the group of Prof. Hongjie Zhang at Changchun Institute of Applied Chemistry, Chinese Academy of Sciences (CAS), and received his PhD degree in Inorganic Chemistry in 2013. His research focus is primarily on the fabrication of functional inorganic materials for heterogeneous catalytic reactions and energy-related applications.
    Shuyan Song received his BSc degree in Chemistry in 2003 and MSc in inorganic chemistry in 2006 both from Northeast Normal University. He joined the group of Prof. Hongjie Zhang at Changchun Institute of Applied Chemistry, Chinese Academy of Sciences (CAS), where he received his PhD in inorganic chemistry in 2009. He is working as a professor under the direction of Prof. Zhang at Changchun Institute of Applied Chemistry, CAS. His research focus is primarily on the development of porous functional materials for heterogeneous catalysis, proton conduction, chemical sensing and detection.
    Hongjie Zhang received his BSc degree from Peking University in 1978. He then worked as a research assistant in Changchun Institute of Applied Chemistry, where he received his MSc degree in Inorganic Chemistry in 1985. Then, he worked as an assistant professor at the same institute from 1985-1989. He then studied at Universite de Bordeaux I, Laboratoire de Chimie du Solide du CNRS (France), where he received his PhD degree in Solid State Chemistry and Materials Sciences in 1993. He joined Changchun Institute of Applied Chemistry, CAS, as a professor in 1994. His current research interests include lanthanide organic-inorganic hybrid materials, electroluminescent devices, functional nanomaterials, and the structure and properties of rare earth magnesium alloys.
  • Supported by:
    National Science and Technology Major Project of China(2021YFB3500700);National Natural Science Foundation of China(22020102003);National Natural Science Foundation of China(22025506);National Natural Science Foundation of China(22271274);Program of Science and Technology Development Plan of Jilin Province of China(20230101035JC);Program of Science and Technology Development Plan of Jilin Province of China(20230101022JC)

Abstract:

High entropy oxides have been regarded as one of the most promising catalysts. Their unique and diverse elemental compositions bring stable structures and abundant metal active sites to the catalysts. Notably, rare earth ions have similar radii, unique electron orbitals, and variable valence states. As a result, incorporating rare earth elements into high entropy oxides can effectively adjust the surface state of the catalyst, ultimately improving the structure and properties of the high entropy oxides. However, there is no systematic review on the development of rare earth-incorporated high entropy oxides. In this review, we target the structure, synthesis, and application of rare earth-incorporated high entropy oxides to summarize their research progress in catalysis in recent years. First, we provide an overview of three types of rare earth-incorporated high entropy oxides: fluorite-type, perovskite-type, and pyrochlore-type. Then, the main synthesis methods are discussed in detail, including solid-state reaction, nebulized spray pyrolysis, chemical co-precipitation, and solution combustion. Finally, we analyze the applications of this material in catalytic reactions and suggest possible challenges and solution strategies. It is concluded that this unique material has good prospects for development.

Key words: Rare earth, High entropy oxides, Catalysis, Single-phase structure, Synthesis