Dear Colleagues,

The field of designing high entropy oxide-based catalysts is an exciting area of research that holds significant potential for advancing heterogeneous catalysis. While progress has been made in this field, it is still relatively underdeveloped compared to traditional catalysts. This Special Issue on "Heterogeneous Catalysis Promoted by High Entropy Metal Oxides" aims to bridge this gap by showcasing high-quality research that focuses on the latest novel advances in the design, synthesis, and application of high entropy metal oxide catalysts in thermocatalytic, electrocatalytic, and photocatalytic reactions.

One of the main motivations behind exploring high entropy metal oxide catalysts is their unique composition and structure. Unlike conventional catalysts that consist of a single active component, high entropy metal oxide catalysts are composed of multiple elements in near-equimolar ratios. This creates a highly complex and diverse catalyst matrix, offering enhanced catalytic properties and performance. By harnessing the synergistic effects of multiple elements, these catalysts exhibit exceptional activity, selectivity, and stability, making them promising candidates for various catalytic reactions.

In this Special Issue, we encourage researchers to contribute their groundbreaking research on high entropy metal oxide catalysts. The scope of the issue encompasses diverse aspects of catalyst design, synthesis, characterization, and application. Submissions focusing on both fundamental understanding and practical applications are welcome. The aim is to provide a comprehensive overview of the recent advancements in this emerging field.

Regarding catalyst design, contributions may include innovative strategies for tailoring the composition, structure, and morphology of high entropy metal oxide catalysts. Novel synthetic approaches, such as sol-gel, co-precipitation, and atomic layer deposition, can be explored to achieve precise control over the catalyst's properties. Additionally, computational modeling and simulation techniques can be employed to gain insights into the catalyst's behavior at the atomic level and guide rational catalyst design.

Characterization plays a crucial role in understanding the structure-function relationships of high entropy metal oxide catalysts. Advanced characterization techniques, such as X-ray diffraction, transmission electron microscopy, X-ray photoelectron spectroscopy, and in situ/operando spectroscopy, can provide valuable information about the catalyst's crystal structure, surface chemistry, active sites, and reaction mechanisms. Contributions focusing on the development and application of novel characterization techniques specific to high entropy metal oxide catalysts are highly encouraged.

The practical applications of high entropy metal oxide catalysts are vast and span across various catalytic reactions. Submissions can cover a broad range of areas, including but not limited to energy conversion and storage, environmental remediation, chemical synthesis, and biomass utilization. Exploring the catalytic performance of high entropy metal oxide catalysts under different reaction conditions and elucidating the underlying mechanisms will contribute to the fundamental understanding of their catalytic properties.

We believe that this Special Issue will serve as a valuable platform for researchers to share their latest findings, exchange ideas, and foster collaborations in the field of high entropy metal oxide catalysts. By gathering high-quality research articles, reviews, and perspectives, we aim to accelerate the development and application of these promising catalysts, ultimately advancing the field of heterogeneous catalysis.

We invite researchers from academia, industry, and national laboratories to contribute their original research to this Special Issue. We encourage authors to submit their manuscripts highlighting the innovative aspects of their work, providing detailed experimental procedures, characterization data, and comprehensive analysis of the obtained results. The rigorous peer-review process will ensure the publication of high-quality and impactful research articles.

In summary, we are excited to present this Special Issue on "Heterogeneous Catalysis Promoted by High Entropy Metal Oxides" and look forward to receiving your valuable contributions. Together, let us explore the fascinating world of high entropy metal oxide catalysts and unlock their potential for catalyzing a sustainable future.

Prof. Dr. Xiangchao Meng
Dr. Meijia Li
Guest Editors

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• heterogeneous Catalysis
• high entropy metal oxides