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Efficient photothermal catalytic CO2 cycloaddition over W18O49/rGO composites
Author NameAffiliationE-mail
CHENG Ruolin Jiangsu Key Laboratory of Coal-based Greenhouse Gas Control and Utilization, Carbon Neutrality Institute, China University of Mining and Technology, Xuzhou, Jiangsu 221008, China
School of Chemical Engineering, China University of Mining and Technology, Xuzhou, Jiangsu 221116, China 		ruolin.cheng@cumt.edu.cn 
WANG Yue School of Chemical Engineering, China University of Mining and Technology, Xuzhou, Jiangsu 221116, China  
NIU Xiyao School of Information and Control Engineering, China University of Mining and Technology, Xuzhou, Jiangsu 221116, China  
LIANG Huagen Jiangsu Key Laboratory of Coal-based Greenhouse Gas Control and Utilization, Carbon Neutrality Institute, China University of Mining and Technology, Xuzhou, Jiangsu 221008, China
School of Chemical Engineering, China University of Mining and Technology, Xuzhou, Jiangsu 221116, China 		 
LIU Ling Jiangsu Key Laboratory of Coal-based Greenhouse Gas Control and Utilization, Carbon Neutrality Institute, China University of Mining and Technology, Xuzhou, Jiangsu 221008, China
School of Chemical Engineering, China University of Mining and Technology, Xuzhou, Jiangsu 221116, China 		 
LU Shijian Jiangsu Key Laboratory of Coal-based Greenhouse Gas Control and Utilization, Carbon Neutrality Institute, China University of Mining and Technology, Xuzhou, Jiangsu 221008, China
School of Chemical Engineering, China University of Mining and Technology, Xuzhou, Jiangsu 221116, China 		lushijian@cumt.edu.cn 
Abstract: Converting CO2 into cyclic carbonates, a process with 100% atom efficiency, offers a promising route for carbon utilization, yet it is hindered by harsh reaction conditions (high temperature/pressure). To provide a cost-effective, high-efficiency catalyst design strategy for sustainable CO2 conversion, oxygen-vacancy-rich defective tungsten oxide (W18O49)/reduced graphene oxide (rGO) composites were constructed via an in-situ solvothermal method. Comprehensive characterization confirmed its structural integrity and defect-rich nature. The W18O49/rGO composite exhibited exceptional photothermal catalytic activity for CO2 cycloaddition under ambient conditions, achieving a 95% styrene carbonate yield (173 mmol·g-1·h-1) with excellent cycling stability. The integration of rGO enhances the CO 2 adsorption, broadens the light absorption, and facilitates charge transfer efficiency. The coupling effect of photocatalysis and thermal catalysis significantly improves the catalytic performance.
Keywords: CO2 cycloaddition  photocatalysis  photothermal effect  defective tungsten oxide  reduced graphene oxide
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CHENG Ruolin,WANG Yue,NIU Xiyao,LIANG Huagen,LIU Ling,LU Shijian.Efficient photothermal catalytic CO2 cycloaddition over W18O49/rGO composites[J].Chinese Journal of Inorganic Chemistry,2025,41(7):1276-1284.
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Chinese Journal of Inorganic Chemistry