DataVXAdvanced MaterialsPaper
journal article·2019-12

Ultrahigh Photocatalytic Rate at a Single‐Metal‐Atom‐Oxide

Cong Wang, Ang Li, Chong Li, Shengbai Zhang, Hui Li, Xiaoyuan Zhou, Liming Hu, Yibo Feng, Kaiwen Wang, Zhu Zhu, Ruiwen Shao, Yanhui Chen, Peng Gao, Shengcheng Mao, Jun Huang, Ze Zhang, Xiaodong Han

Advanced Materials· Volume 31· Issue 52
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Source abstract

Abstract

Abstract Metal oxides, as one of the mostly abundant and widely utilized materials, are extensively investigated and applied in environmental remediation and protection, and in energy conversion and storage. Most of these diverse applications are the result of a large diversity of the electronic states of metal oxides. Noticeably, however, many metal oxides present obstacles for applications in catalysis, mainly due to the lack of efficient active sites with desired electronic states. Here, the fabrication of single‐tungsten‐atom‐oxide (STAO) is demonstrated, in which the metal oxide's volume reaches its minimum as a unit cell. The catalytic mechanism in the STAO is determined by a new single‐site physics mechanism, named as quasi‐atom physics. The photogenerated electron transfer process is enabled by an electron in the spin‐up channel excited from the highest occupied molecular orbital to the lowest unoccupied molecular orbital +1 state, which can only occur in STAO with W5+. STAO results in a record‐high and stable sunlight photocatalytic degradation rate of 0.24 s−1, which exceeds the rates of available photocatalysts by two orders of magnitude. The fabrication of STAO and its unique quasi‐atom photocatalytic mechanism lays new ground for achieving novel physical and chemical properties using single‐metal‐atom oxides (SMAO).
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Research context

Catalysis & surfaces

OpenAlex topics: Advanced Photocatalysis Techniques · Catalytic Processes in Materials Science · Electrocatalysts for Energy Conversion

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

Affiliations

Institute of Microstructure and Property of Advanced Materials Beijing Key Lab of Microstructure and Property of Advanced Materials Beijing University of Technology Beijing 100124 China

International Laboratory for Quantum Functional Materials of Henan School of Physics and Engineering Zhengzhou University Zhengzhou 450001 China

Department of Physics Applied Physics and Astronomy Rensselaer Polytechnic Institute Troy NY 12180 USA

College of Physics Institute of Advanced Interdisciplinary Studies Chongqing University Chongqing 401331 China

Department of Biological and Chemical Engineering Beijing University of Technology Beijing 100124 China

Electron Microscopy Laboratory International Center for Quantum Materials School of Physics Peking University Beijing 100871 China

School of Chemical and Biomolecular Engineering Sydney Nano Institute The University of Sydney Nano Institute Sydney New South Wales 2006 Australia

Department of Material Science Zhejiang University Hangzhou 310008 China

Funding

National Natural Science Foundation of China · Higher Education Discipline Innovation Project · Natural Science Foundation of Beijing Municipality · National Science Foundation

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