Abstract Microfluidics is an emerging branch of science that has significant applications in various fields. In this review paper, after a brief introduction to the concept of photocatalysis, nanoparticle preparation methods and film formation techniques have been studied. Nanoparticle synthesis in microfluidic systems and microreactor types for on-chip photocatalyst synthesis and challenges of nanoparticles handling in microsystems have been reviewed. To resolve particle polydispersity and microchannel clogging, a good suggestion can be the use of droplet-based microreactors. The configurative designs for the microfluidic reactor with immobilized photocatalysts, their applications, and their challenges have been comprehensively addressed. The three main challenges ahead the immobilized photocatalytic microfluidic reactors are optimal light distribution, prevention of the recombination of photogenerated electrons and holes, and improved mass transfer. Internal light-emitting diodes with a waveguide can resolve the number one challenge of photocatalysis application in optofluidic reactors, that is, light distribution.

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微流控反应器中光催化剂合成与应用的设计与开发综述：挑战与机遇

摘要 微流体是一门新兴的科学分支，在各个领域都有重要的应用。在这篇综述论文中，在简要介绍了光催化的概念之后，研究了纳米颗粒的制备方法和成膜技术。综述了微流体系统中的纳米粒子合成和用于片上光催化剂合成的微反应器类型以及微系统中纳米粒子处理的挑战。为了解决颗粒多分散性和微通道堵塞问题，一个很好的建议是使用基于液滴的微反应器。具有固定化光催化剂的微流体反应器的配置设计、它们的应用和它们的挑战已经得到全面解决。固定化光催化微流体反应器面临的三个主要挑战是最佳的光分布、防止光生电子和空穴的复合以及改善传质。带有波导的内部发光二极管可以解决光流控反应器中光催化应用的第一大挑战，即光分布。