Zihao Wang, Chi Cao, Li Jiang, Zihao Xing, Jiangtao Jia, Guangshan Zhu
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引用次数: 0
Abstract
Current CO2 photocatalytic systems mainly work in ultraviolet and visible light regions, and the inability to utilize the abundant near‐infrared (NIR) radiation or the low utilization rate is still a bottleneck for practical applications. We address this challenge through the strategic synthesis of metal‐free conjugated porous aromatic frameworks (PAFs), PAF‐332‐DCM, to enhance the NIR absorption capabilities, achieving a CO production rate of ~74.7 μmol g‐1 h‐1 in gas‐solid phase CO2 reduction, surpassing typical NIR‐responsive catalysts. Meanwhile, PAF‐332‐DCM can obtain a CO production rate of 344.1 μmol g‐1 h‐1 in full‐spectrum irradiated CO2 reduction. Infrared thermography reveals that the non‐radiative attenuation of PAF‐332‐DCM led to high photothermal temperature under NIR irradiation, which accounts for its reduction performance. Mechanistic studies combining fs‐TA spectroscopy and in situ infrared characterization elucidate the photocatalytic pathway and intermediate formation. This result indicates that PAF‐332‐DCM can be a promising metal‐free catalyst for practical solar‐driven CO2 conversion.
期刊介绍:
Angewandte Chemie, a journal of the German Chemical Society (GDCh), maintains a leading position among scholarly journals in general chemistry with an impressive Impact Factor of 16.6 (2022 Journal Citation Reports, Clarivate, 2023). Published weekly in a reader-friendly format, it features new articles almost every day. Established in 1887, Angewandte Chemie is a prominent chemistry journal, offering a dynamic blend of Review-type articles, Highlights, Communications, and Research Articles on a weekly basis, making it unique in the field.