H₂S is a notorious gas widely generated in the petrochemical industry. How to handle H₂S effectively and convert it into highly-valued products is vital. Photocatalysis is promising in this field, as it could directly utilize solar light and convert H₂S into H₂ and S. In this review, the properties of hydrogen sulfide (H₂S) is overviewed first, and conventional techniques (Claus process, thermolysis, non-thermal plasma, electrochemistry and other methods) for H₂S decomposition are simply introduced. Basic knowledge of photocatalysis and general strategies for enhancing the activities of photocatalysts are presented as well. Then typical work for photocatalytic decomposition of H₂S in gas phase and liquid phase are introduced case by case, with the generated H₂ as the main product in these systems. Furthermore, methods for extraction of elemental sulfur from H₂S by photocatalysis-related methods will be discussed, with specific attention on photoelectrochemical cells and photovoltaic-electrochemical cells. In the end, current status of the research on photocatalytic decomposition of H₂S is summarized, and challenges in this field is put forward. In addition, some other possible strategies for photocatalytic conversion of H₂S into highly-valued chemicals instead of hydrogen and elemental sulfur will be discussed, which is aimed to inspire researchers interested in this field.

H ₂ S是在石油化学工业中广泛产生的臭名昭著的气体。如何有效处理H ₂ S并将其转化为高价值产品至关重要。光催化在该领域很有希望，因为它可以直接利用太阳光并将H ₂ S转化为H ₂和S。在本综述中，首先概述了硫化氢（H ₂ S）的性质，以及常规技术（克劳斯工艺，简单介绍了热分解，非热等离子体，电化学和其他方法分解H ₂ S的方法。还介绍了光催化的基本知识和增强光催化剂活性的一般策略。然后是光催化分解H的典型工作分别引入气相和液相中的₂ S，其中生成的H ₂是这些系统中的主要产物。此外，将讨论通过光催化相关方法从H ₂ S中提取元素硫的方法，尤其是对光电化学电池和光生伏打电池的关注。最后总结了H ₂ S光催化分解研究的现状，并提出了该领域的挑战。此外，还将讨论其他一些将H ₂ S光催化转化为高价值化学品而不是氢和元素硫的可能策略，以激发对这一领域感兴趣的研究人员。