DataVXAdvanced MaterialsPaper
journal article·2024-06

Noble‐Metal‐Free High‐Entropy Alloy Nanoparticles for Efficient Solar‐Driven Photocatalytic CO2 Reduction

Haowei Huang, Jiwu Zhao, Hele Guo, Bo Weng, Hongwen Zhang, Rafikul Ali Saha, Menglong Zhang, Feili Lai, Yufan Zhou, Rubio‐Zuazo Juan, Peng‐Cheng Chen, Sibo Wang, Julian A. Steele, Fulan Zhong, Tianxi Liu, Johan Hofkens, Yu‐Ming Zheng, Jinlin Long, Maarten B. J. Roeffaers

Advanced Materials· Volume 36· Issue 26
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Source abstract

Abstract

Abstract Metal nanoparticle (NP) cocatalysts are widely investigated for their ability to enhance the performance of photocatalytic materials; however, their practical application is often limited by the inherent instability under light irradiation. This challenge has catalyzed interest in exploring high‐entropy alloys (HEAs), which, with their increased entropy and lower Gibbs free energy, provide superior stability. In this study, 3.5 nm‐sized noble‐metal‐free NPs composed of a FeCoNiCuMn HEA are successfully synthesized. With theoretic calculation and experiments, the electronic structure of HEA in augmenting the catalytic CO2 reduction has been uncovered, including the individual roles of each element and the collective synergistic effects. Then, their photocatalytic CO2 reduction capabilities are investigated when immobilized on TiO2. HEA NPs significantly enhance the CO2 photoreduction, achieving a 23‐fold increase over pristine TiO2, with CO and CH4 production rates of 235.2 and 19.9 µmol g−1 h−1, respectively. Meanwhile, HEA NPs show excellent stability under simulated solar irradiation, as well high‐energy X‐ray irradiation. This research emphasizes the promising role of HEA NPs, composed of earth‐abundant elements, in revolutionizing the field of photocatalysis.
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Research context

Metals & alloysNanomaterialsCatalysis & surfaces

OpenAlex topics: Advanced Photocatalysis Techniques · Electrocatalysts for Energy Conversion · Electronic and Structural Properties of Oxides

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

cMACS, Department of Microbial and Molecular Systems KU Leuven Celestijnenlaan 200F Leuven 3001 Belgium

State Key Lab of Photocatalysis on Energy and Environment, College of Chemistry Fuzhou University Fuzhou 350116 China

Department of Chemistry, Faculty of Sciences KU Leuven Celestijnenlaan 200F Leuven 3001 Belgium

CAS Key Laboratory of Urban Pollutant Conversion Institute of Urban Environment Chinese Academy of Sciences 1799 Jimei Road Xiamen 361021 China

University of Chinese Academy of Sciences 19A Yuquan Road Beijing 100049 China

College of Optical Science and Engineering Zhejiang University Hangzhou 310027 China

Department of Materials Science Fudan University Shanghai 200438 China

BM25‐SpLine Beamline at the ESRF 71 Avenue des Martyrs Grenoble 38043 France

Instituto de Ciencia de Materiales de Madrid‐CSIC Sor Juana Inés de la Cruz, 3, Cantoblanco Madrid 28049 Spain

Australian Institute for Bioengineering and Nanotechnology and School of Mathematics and Physics The University of Queensland Brisbane Queensland 4072 Australia

National Engineering Research Center of Chemical Fertilizer Catalyst (NERC‐CFC), College of Chemical Engineering Fuzhou University Fuzhou 350002 P. R. China

Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering Jiangnan University Wuxi 214122 China

Funding

National Natural Science Foundation of China · National Key Research and Development Program of China · Australian Research Council · European Synchrotron Radiation Facility

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