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Ultrastable and Efficient Visible‐light‐driven CO <sub>2</sub> Reduction Triggered by Regenerative Oxygen‐Vacancies in Bi <sub>2</sub> O <sub>2</sub> CO <sub>3</sub> Nanosheets

Xiaolong ZuHefei National Laboratory for Physical Science at Microscale National Synchrotron Radiation Laboratory CAS Centre for Excellence in Nanoscience University of Science and Technology of China Hefei 230026 P. R. ChinaYuan ZhaoHefei National Laboratory for Physical Science at Microscale National Synchrotron Radiation Laboratory CAS Centre for Excellence in Nanoscience University of Science and Technology of China Hefei 230026 P. R. ChinaXiaodong LiHefei National Laboratory for Physical Science at Microscale National Synchrotron Radiation Laboratory CAS Centre for Excellence in Nanoscience University of Science and Technology of China Hefei 230026 P. R. ChinaRunhua ChenHefei National Laboratory for Physical Science at Microscale National Synchrotron Radiation Laboratory CAS Centre for Excellence in Nanoscience University of Science and Technology of China Hefei 230026 P. R. ChinaWeiwei ShaoHefei National Laboratory for Physical Science at Microscale National Synchrotron Radiation Laboratory CAS Centre for Excellence in Nanoscience University of Science and Technology of China Hefei 230026 P. R. ChinaZhiqiang WangHefei National Laboratory for Physical Science at Microscale National Synchrotron Radiation Laboratory CAS Centre for Excellence in Nanoscience University of Science and Technology of China Hefei 230026 P. R. ChinaJun HuHefei National Laboratory for Physical Science at Microscale National Synchrotron Radiation Laboratory CAS Centre for Excellence in Nanoscience University of Science and Technology of China Hefei 230026 P. R. ChinaJunfa ZhuHefei National Laboratory for Physical Science at Microscale National Synchrotron Radiation Laboratory CAS Centre for Excellence in Nanoscience University of Science and Technology of China Hefei 230026 P. R. ChinaYang PanHefei National Laboratory for Physical Science at Microscale National Synchrotron Radiation Laboratory CAS Centre for Excellence in Nanoscience University of Science and Technology of China Hefei 230026 P. R. ChinaYongfu SunHefei National Laboratory for Physical Science at Microscale National Synchrotron Radiation Laboratory CAS Centre for Excellence in Nanoscience University of Science and Technology of China Hefei 230026 P. R. ChinaYi XieHefei National Laboratory for Physical Science at Microscale National Synchrotron Radiation Laboratory CAS Centre for Excellence in Nanoscience University of Science and Technology of China Hefei 230026 P. R. China
2021en
ABI

Аннотация

Abstract Herein, we first design a fast low‐pressure ultraviolet light irradiation strategy for easily regenerating the nearly equivalent surface vacancies. Taking the defective Bi 2 O 2 CO 3 nanosheets as an example, nearly equal amount of oxygen vacancies can be regenerated under UV light irradiation. Synchrotron‐radiation quasi in situ X‐ray photoelectron spectra disclose the Bi sites in the O‐defective Bi 2 O 2 CO 3 nanosheets can act as the highly active sites, which not only help to activate CO 2 molecules, but also contribute to stabilizing the rate‐limiting COOH* intermediate. Also, in situ Fourier transform infrared spectroscopy and in situ mass spectrometry unravel the UV light irradiation contributes to accelerating CO desorption process. As a result, the O‐defective Bi 2 O 2 CO 3 nanosheets achieve a stability up to 2640 h over 110 cycling tests and a high evolution rate of 275 μmol g −1 h −1 for visible‐light‐driven CO 2 reduction to CO.

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Идентификаторы

DOI
10.1002/anie.202101894

Цитирования и источники

Цитирований: 2Использованных источников: 0
Показатели — AkademScholar