Four interrelated issues have been arising with the development of modern industry, namely environmental pollution, the energy crisis, the greenhouse effect and the global food crisis. Photocatalysis is one of the most promising methods to solve them in the future. To promote high photocatalytic reaction efficiency and utilize solar energy to its fullest, a well-designed photoreactor is vital. Photocatalytic optofluidic microreactors, a promising technology that brings the merits of microfluidics to photocatalysis, offer the advantages of a large surface-to-volume ratio, a short molecular diffusion length and high reaction efficiency, providing a potential method for mitigating the aforementioned crises in the future. Although various photocatalytic optofluidic microreactors have been reported, a comprehensive review of microreactors applied to these four fields is still lacking. In this paper, we review the typical design and development of photocatalytic microreactors in the fields of water purification, water splitting, CO2 fixation and coenzyme regeneration in the past few years. As the most promising tool for solar energy utilization, we believe that the increasing innovation of photocatalytic optofluidic microreactors will drive rapid development of related fields in the future.

中文翻译：

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光催化光流控微反应器综述

现代工业发展产生了四个相互关联的问题，即环境污染、能源危机、温室效应和全球粮食危机。光催化是未来最有希望解决这些问题的方法之一。为了提高光催化反应效率并充分利用太阳能，设计良好的光反应器至关重要。光催化光流控微反应器是一种将微流控优点带入光催化的有前途的技术，具有比表面积大、分子扩散长度短、反应效率高等优点，为缓解上述危机提供了一种潜在的方法。未来。尽管已经报道了各种光催化光流控微反应器，仍然缺乏对应用于这四个领域的微反应器的全面审查。在本文中，我们回顾了光催化微反应器在水净化、水分解、二氧化碳等领域的典型设计和开发。2过去几年的固定和辅酶再生。作为太阳能利用最有前景的工具，我们相信光催化光流控微反应器的不断创新将推动未来相关领域的快速发展。