光催化-微生物耦合固碳研究进展

Recent development of photocatalytic-biological hybrid systems for CO;assimilation

CO_(2)作为主要的温室气体之一,它的大量排放是引起全球变暖等环境问题的主要因素。同时,CO_(2)也是大气中储量丰富、可再生的碳源,可以用于含碳燃料及化工产品的生产。因此,实现CO_(2)的捕集及转化是缓解全球环境和能源危机的重要途径。受自然界光合作用的启发,国内外研究者将半导体材料的高光电转换效率和微生物全细胞代谢途径的高选择性有机结合,构建光催化微生物耦合固碳体系,在高效固碳的同时合成生化产品。本文首先简述了光催化的基本原理以及现有的天然固碳途径,并分析了二者结合的可行性;其次,系统介绍了近年来光催化微生物耦合固碳体系的研究进展;最后,分析了现有光催化微生物耦合固碳体系所面临的挑战,并提出了未来的发展展望。

The emission of CO_(2)has become the primary cause of greenhouse effect and global warming.Meanwhile, CO_(2)is also a renewable carbon source that is abundant on earth, which can be utilized for the production of carbon-based fuels and chemicals.Therefore, the efficient capture and conversion of CO_(2)is an essential pathway to alleviate global environmental issues and energy crisis.Inspired by natural photosynthesis, scientists have successfully designed photocatalytic-biological hybrid systems for efficient CO_(2)conversion that combine the light-harvesting efficiency of semiconductors with the high selectivity of living cells with various intracellular metabolic pathways.In this review, we first introduce briefly the mechanism of photocatalysis and the currently existing natural CO_(2)sequestration pathways, and describe the feasibility of their integration.Then, we outline systematically the recent development in the construction of photocatalytic-biological hybrids for CO_(2)assimilation.The major challenges and further perspectives related to these biohybrid systems are finally outlined and discussed.