Affiliation:
1. School of Environmental and Biological Engineering School of Chemistry and Chemical Engineering Nanjing University of Science and Technology Nanjing 210094 China
2. Nanjing Key Laboratory of Advanced Functional Materials Nanjing Xiaozhuang University Nanjing 211171 China
3. College of Earth and Environment Anhui University of Science and Technology Anhui Huainan 232001 China
Abstract
AbstractPhotothermal CO2 reduction using H2O combined with photocatalysis‐driven H2O splitting combined with thermal catalysis‐supported CO2 reduction has attracted rapid interest in artificial synthesis of solar fuel. With respect to extremely efficient photothermal catalysis, the photothermal impact of TMDCs (Transition Metal Dichalcogenides) facilitates CO2 reduction by activating lattice oxygen in oxide to enhance H2O oxidation. However, the fixed band gap of single photocatalyst is limited. The purpose of this work is to expand the band gap and improve the redox capacity. Hollow boxwood ball‐like WO3/WS2 Z‐scheme heterojunctions were prepared and used for photothermal catalytic CO2 reduction. DFT calculations and UV‐Vis spectra show LSPR effect in WOS heterojunctions, and the optical response extends to near infrared region. By comparison, the photothermal catalytic reduction of WO3/WS2 (9.717 μmol) by CO2 at 513 K is higher than that at 298 K (1.198 μmol) by a factor of 8. The formation of Z‐scheme heterojunction promotes rapid carrier transfer and lowers the reaction energy barrier. As well as the hollow structure improves light utilization and increases the interfacial area and number of active sites. In addition, the WO3/WS2 heterostructure utilizes its unique LSPR effect to generate heat through the photothermal effect, which can also promote molecular activation. This work reveals the important role of the LSPR effect in photothermal catalysis and demonstrates a TMDCs‐based photothermal‐driven catalysts, which presents a promising approach for designing of photothermal catalytic CO2 reduction.
Funder
National Natural Science Foundation of China
Natural Science Foundation of Jiangsu Province
Fundamental Research Funds for the Central Universities
Subject
Inorganic Chemistry,Organic Chemistry,Physical and Theoretical Chemistry,Catalysis
Cited by
1 articles.
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