新型光催化策略在常温下实现氢气活化

Core Insights - A new photocatalytic strategy has been developed that allows for efficient hydrogen "cracking" at room temperature, transforming carbon dioxide into high-value chemicals, marking a significant advancement in green low-carbon chemical processes [1][2]. Group 1: Photocatalytic Hydrogen Cracking - The research team has successfully achieved hydrogen cracking at room temperature using a novel approach that utilizes photo-generated electrons and holes to create spatially adjacent positive and negative charge centers [2]. - The model catalyst used in this study is gold/titanium dioxide, which, when excited by ultraviolet light, generates bound electron-hole pairs, enabling efficient hydrogen cracking [2]. Group 2: Carbon Dioxide Reduction - The active hydrogen species produced from hydrogen cracking can convert carbon dioxide entirely into ethane at room temperature, with a conversion rate reaching 99% [2]. - This photocatalytic method not only reduces energy consumption and carbon emissions compared to traditional hydrogenation processes but also significantly lowers carbon dioxide emissions, contributing to the optimization of carbon resource utilization [3]. Group 3: Industrial Application and Future Research - The catalyst demonstrated stable operation for over 1500 hours, indicating strong potential for industrial applications [2]. - Future research will focus on further exploring reaction processes and developing industrial pathways that couple light and thermal energy, aiming to provide new models for the upgrading and transformation of modern coal chemical industries [4].