Highly selective photothermal conversion of CO2 to ethylene using hierarchical boxwood ball-like Weyl semimetal WTe2 catalysts
Literature Information
Xiaoyue Zhang, Chaoran Dong, Yong Yang, Yingjie Hu, Lizhi Wu, Yu Gu, Kan Zhang, Jinyou Shen
It is of significance to convert CO2 into value-added carbon compounds under solar light. Here, we report a WTe2 photothermal catalyst for the highly selective conversion of CO2 into a commercially valuable chemical, ethylene (C2H4), by using the dual sites of W and Te under light illumination. It is found that (1) WTe2 offers favorable formation of a *CHO intermediate at the W site, a lower energy barrier for the transfer of the *CHO intermediate from the W to the Te site, and a suitable W–Te distance for the C–C coupling to produce C2H4; (2) the photocatalysis and thermocatalysis synergistically cooperate with each other on WTe2, significantly facilitating the CO2 conversion. As a result, by designing a WTe2 nanostructure with an enhanced photothermal effect, the reaction temperature can reach 185 °C under a 300 W Xe lamp, enabling a C2H4 production rate of 115.51 μmol g−1 with a selectivity of C2H4 up to 88%, which exceeds all reported values of solar-driven C2H4 production.
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DOI: 10.1039/A607993H
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Journal of Materials Chemistry A

Journal of Materials Chemistry A, B & C cover high quality studies across all fields of materials chemistry. The journals focus on those theoretical or experimental studies that report new understanding, applications, properties and synthesis of materials. The journals have a strong history of publishing quality reports of interest to interdisciplinary communities and providing an efficient and rigorous service through peer review and publication. The journals are led by an international team of Editors-in-Chief and Associate Editors who are all active researchers in their fields. Journal of Materials Chemistry A, B & C are separated by the intended application of the material studied. Broadly, applications in energy and sustainability are of interest to Journal of Materials Chemistry A, applications in biology and medicine are of interest to Journal of Materials Chemistry B, and applications in optical, magnetic and electronic devices are of interest to Journal of Materials Chemistry C. More than one Journal of Materials Chemistry journal may be suitable for certain fields and researchers are encouraged to submit their paper to the journal that they feel best fits for their particular article. Example topic areas within the scope of Journal of Materials Chemistry A are listed below. This list is neither exhaustive nor exclusive. Artificial photosynthesis Batteries Carbon dioxide conversion Catalysis Fuel cells Gas capture/separation/storage Green/sustainable materials Hydrogen generation Hydrogen storage Photocatalysis Photovoltaics Self-cleaning materials Self-healing materials Sensors Supercapacitors Thermoelectrics Water splitting Water treatment










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