112學年材料所-第三週 專題研討課程演講A區公告 (112年9月21日)
2023.09.15
112學年上學期 材料所專題研討課程 公告
題目：
碳氫化合物部分氧化和 CO2 + NO3共還原尿素的電催化觸媒高效設計：量子力學觀點
Electrocatalyst Design for Efficient Hydrocarbon Partial Oxidation and CO2 + NO3- Co-Reduction to Urea: A Quantum Mechanical Perspective
主講人：鄭沐政 博士
現職：國立成功大學化學系 教授
學歷：美國加州理工學院 化學博士
時間：112年 09月 21日(四) 下午 3:10 – 5 :00
地點：成功大學成功校區三系館 鋼構區(3F)共同教室A1302演講廳
演講摘要：
The electrochemical oxygen evolution reaction (OER) is a critical bottleneck in artificial photosynthesis. It requires a very positive onset potential (UOER > 1.5 VRHE), much larger than the equilibrium potential (UOER,Eq = 1.23 VRHE), to drive the reaction, making it very energy-demanding. For most known electrocatalysts, a high UOER is used to overcome the third elementary step of the reaction (*O + H2O(l) ® *OOH + H+ + e-). If the goal is to generate *O rather than complete the OER, the required UOER would be less positive, making the whole process less energy-demanding. In homogeneous and heterogeneous catalysis, *O often acts as a reaction center for various oxidation reactions. Thus, *O generated during the OER should be able to serve as an active site for oxidation. In the past four years, we have used quantum mechanics combined with a constant electrode model to verify and apply this concept to design and screen electrocatalysts to oxidize inexpensive hydrocarbons into more valuable compounds. In this presentation, I will detail our discovery. Additionally, I will also present our recent studies in the co-reduction of CO2 and NO3- to urea on copper.
題目：
碳氫化合物部分氧化和 CO2 + NO3共還原尿素的電催化觸媒高效設計：量子力學觀點
Electrocatalyst Design for Efficient Hydrocarbon Partial Oxidation and CO2 + NO3- Co-Reduction to Urea: A Quantum Mechanical Perspective
主講人：鄭沐政 博士
現職：國立成功大學化學系 教授
學歷：美國加州理工學院 化學博士
時間：112年 09月 21日(四) 下午 3:10 – 5 :00
地點：成功大學成功校區三系館 鋼構區(3F)共同教室A1302演講廳
演講摘要：
The electrochemical oxygen evolution reaction (OER) is a critical bottleneck in artificial photosynthesis. It requires a very positive onset potential (UOER > 1.5 VRHE), much larger than the equilibrium potential (UOER,Eq = 1.23 VRHE), to drive the reaction, making it very energy-demanding. For most known electrocatalysts, a high UOER is used to overcome the third elementary step of the reaction (*O + H2O(l) ® *OOH + H+ + e-). If the goal is to generate *O rather than complete the OER, the required UOER would be less positive, making the whole process less energy-demanding. In homogeneous and heterogeneous catalysis, *O often acts as a reaction center for various oxidation reactions. Thus, *O generated during the OER should be able to serve as an active site for oxidation. In the past four years, we have used quantum mechanics combined with a constant electrode model to verify and apply this concept to design and screen electrocatalysts to oxidize inexpensive hydrocarbons into more valuable compounds. In this presentation, I will detail our discovery. Additionally, I will also present our recent studies in the co-reduction of CO2 and NO3- to urea on copper.