State Key Laboratory of Organic Electronics and Information Displays & Institute of Advanced Materials (IAM), Jiangsu Key Laboratory for Biosensors, Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing University of Posts and Telecommunications, Nanjing, 210023, China.
Department of Bioengineering, University of California, Los Angeles, Los Angeles, CA, 90095, USA.
Adv Sci (Weinh). 2022 Oct;9(28):e2203057. doi: 10.1002/advs.202203057. Epub 2022 Aug 11.
Mass transfer is an essential factor determining photocatalytic performance, which can be modulated by fluid field via manipulating the kinetic characteristics of photocatalysts and photocatalytic intermediates. Past decades have witnessed the efforts and achievements made in manipulating mass transfer based on photocatalyst structure and composition design, and thus, a critical survey that scrutinizes the recent progress in this topic is urgently necessitated. This review examines the basic principles of how mass transfer behavior impacts photocatalytic activity accompanying with the discussion on theoretical simulation calculation including fluid flow speed and pattern. Meanwhile, newly emerged viable photocatalytic micro/nanomotors with self-thermophoresis, self-diffusiophoresis, and bubble-propulsion mechanisms as well as magnet-actuated photocatalytic artificial cilia for facilitating mass transfer will be covered. Furthermore, their applications in photocatalytic hydrogen evolution, carbon dioxide reduction, organic pollution degradation, bacteria disinfection and so forth are scrutinized. Finally, a brief summary and future outlook are presented, providing a viable guideline to those working in photocatalysis, mass transfer, and other related fields.
传质是决定光催化性能的一个重要因素，可以通过流场来调节，通过控制光催化剂和光催化中间体的动力学特性来实现。过去几十年见证了基于光催化剂结构和组成设计来控制传质的努力和成就，因此迫切需要对这一课题的最新进展进行批判性调查。本文考察了传质行为对光催化活性的影响的基本原理，并讨论了包括流体速度和模式在内的理论模拟计算。同时，本文还介绍了新兴的可行的光催化微/纳米马达，它们具有自热泳、自扩散泳和气泡推进机制，以及磁驱动的光催化人工纤毛，以促进传质。此外，还考察了它们在光催化制氢、二氧化碳还原、有机污染物降解、细菌消毒等方面的应用。最后，本文进行了简要总结和展望，为从事光催化、传质等相关领域的研究人员提供了可行的指导。
