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2D Copper–Porphyrin Metal–Organic Framework Nanosheet‐Photosensitized TiO2 for Efficiently Broadband Light‐Driven Conversion of CO2 to CH4.

Authors :
Xu, Xiaoqian
Wang, Hui
Gao, Ting
Luo, Tian
Zvere, Irina
Orudzhev, Farid
Wang, Chuanyi
Bahnemann, Detlef Wemer
Source :
Solar RRL; May2024, Vol. 8 Issue 9, p1-10, 10p
Publication Year :
2024

Abstract

The effective utilization of light is crucial in the use of the solar energy for CO2 conversion into valuable fuels and chemicals, in which improving the photocatalytic materials' capacity to absorb light is a key. Herein, a 2D copper–porphyrin metal−organic framework (MOF)‐photosensitized titania, TiO2/Zn–CuTCPP, is reported, which can absorb wide range of light and photoreduce CO2 with high efficiency under full spectrum irradiation. Fluorescence spectral analysis elucidates the relationship between the photocatalytic activity and the electron–hole separation efficiency. In addition, mechanistic information obtained from electron paramagnetic resonance and in situ infrared analyses demonstrates that the presence of Cu–N4 site in the MOF structure is conducive to the generation of hydrogen free radicals (•H), which plays a key role in the formation of intermediates, thus facilitating the hydrogenation in the reaction process. Consequently, TiO2/Zn–CuTCPP significantly enhances the photocatalytic conversion of CO2 into CH4 with a yield 14 times higher than that of P25. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
2367198X
Volume :
8
Issue :
9
Database :
Complementary Index
Journal :
Solar RRL
Publication Type :
Academic Journal
Accession number :
177083884
Full Text :
https://doi.org/10.1002/solr.202400081