科学与健康|让氢气“更听话”！科学家在光催化氢气异裂领域取得新进展

Core Viewpoint - Recent advancements in photocatalytic hydrogen cleavage have been achieved by a research team from the Dalian Institute of Chemical Physics, Chinese Academy of Sciences, in collaboration with the University of Trieste, Italy, enabling hydrogen cleavage at room temperature [1][2]. Group 1: Research Significance - Hydrogen is a key element in transforming nitrogen into fertilizers and converting carbon dioxide into gasoline, but its cleavage is challenging due to the strong bond between hydrogen atoms [1]. - The research focuses on hydrogen activation, a crucial step in hydrogenation reactions, which accounts for about 25% of chemical processes [1]. Group 2: Methodology and Findings - The team developed a photocatalytic strategy that utilizes spatially adjacent positive and negative charge centers to achieve efficient hydrogen cleavage at room temperature [2]. - By using gold/titanium dioxide as a model catalyst, the team demonstrated that ultraviolet light can induce electron migration, enhancing hydrogen cleavage efficiency [2]. Group 3: Practical Applications - The hydrogen species generated can completely convert inert carbon dioxide into ethane at room temperature, with the catalyst maintaining stable operation for over 1500 hours [3]. - This process significantly reduces energy consumption and carbon dioxide emissions, contributing to the optimization of carbon resource utilization and offering a new model for the upgrading and transformation of modern coal chemical industries [3].