Jinli Qiao
Donghua University, China
Posters & Accepted Abstracts: Trends in Green chem
In response to the fast consumption of fossil fuels and their associated environmental problems including the notorious greenhouse gas (CO2), carbon captureand utilization (CCU) methods to convert CO2 into value-added chemicals or fuels have aroused intense attention worldwide. Among these transformations, using electrochemical reduction to convert CO2 to CH4, CH3OH, HCOOH, C2H2, etc. is particularly interesting as it could allow for intermittent and unpredictable renewable energy (i.e., solar or wind) to be stored in the form of these useful small fuels or chemical products. In the process of CO2 electroreduction reaction (CER), slow kinetic and low production selectivity of CER are major challenges, leading to wastage of energy and the insufficient utilization of resources. Although some electrocatalysts are employed to accelerate the reaction kinetics and improve the selectivity, the processes of CER at the current state of technology are still not practical. Overcoming these challenges of CO2 reduction under mild conditions would enable development of high efficient fuel-producing devices with practicability, especially for room-temperature CO2 reduction in aqueous solutions. In view of these facts, we here report the design and synthesis of Sn oxides electrocatalysts with special 3D morphology including micropheric, coralline-like and flower-like structure by simple hydrothermal method. All of these SnOx catalysts were coated on the gas diffusion carbon paper sheets to form target electrodes. To our interesting, all the obtained SnOx exhibited the superb CER catalytic activity and selectivity toward formate production with FE% > 60%, but the electrode modified with coralline-like structured SnOx is more efficient due to its exposed more {002} planes of SnO2 with FE% reaching to 87%.
Email: qiaojl@dhu.edu.cn
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