Solar-energy-driven photothermal catalytic C–C coupling from CO2 reduction over WO3–x

被引：0

作者：

Deng, Yu ^{[1
]}

Li, Jue ^{[1
]}

Zhang, Rumeng ^{[1
]}

Han, Chunqiu ^{[2
]}

Chen, Yi ^{[2
]}

Zhou, Ying ^{[2
]}

Liu, Wei ^{[1
]}

Wong, Po Keung ^{[3
]}

Ye, Liqun ^{[1
]}

机构：

[1] College of Materials and Chemical Engineering, Key Laboratory of Inorganic Nonmetallic Crystalline and Energy Conversion Materials, China Three Gorges University, Hubei, Yichang,443002, China

[2] State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, School of Materials Science and Engineering, Southwest Petroleum University, Sichuan, Chengdu,610500, China

[3] School of Life Sciences, The Chinese University of Hong Kong, Hong Kong SAR, Shatin, Hong Kong

来源：

Chinese Journal of Catalysis | 2022年 / 43卷 / 05期

基金：

中国国家自然科学基金;

关键词：

D O I：

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中图分类号：

学科分类号：

摘要：

Solar-energy-driven catalytic CO2 reduction for the production of value-added carbon-based materials and chemical raw materials has attracted great interest to alleviate the global climate change and energy crisis. The production of multicarbon (C2) products through CO2 reduction is extremely attractive, however, the yield and selectivity of C2 products remain low because of the low reaction temperature required and the low photoelectron density of the substrate. Here, we introduce WO3–x, which contains oxygen vacancies and exhibits an excellent photothermal conversion efficiency, to improve the generation of C2 products (C2H4 and C2H6) under simulated sunlight (UV-Vis-IR) irradiation. WO3–x produced 5.30 and 0.93 μmol·g–1 C2H4 and C2H6, respectively, after 4 h, with a selectivity exceeding 34%. In situ Fourier transform infrared spectra and theoretical calculations showed that the oxygen vacancies enhanced the water activation and hydrogenation of adsorbed CO for the formation of C2 products via C–C coupling from CH2/CH3 intermediates. The findings of this study could assist in the design of highly active solar-energy-driven catalysts to produce C–C coupling products through CO2 reduction. © 2022 Dalian Institute of Chemical Physics, the Chinese Academy of Sciences

引用

页码：1230 / 1237