To solve the problem of the global energy shortage and the pollution of the environment, in recent years, semiconductor photocatalytic technology that converts solar energy into chemical fuel has been widely studied. Regarding semiconductor-based photocatalysts, CdS has attracted extensive attention due to its relatively narrow bandgap for visible-light response and sufficiently negative potential of the conduction band edge for the reduction of protons. Studies have shown that CdS-based photocatalysts possess excellent photocatalytic performance in terms of solar-fuel generation and environmental purification. This critical review presents the recent advances and progress in the design and synthesis of various CdS and CdS-based photocatalysts. The basic physical and chemical properties of CdS and the related growth mechanism have been briefly summarized. Moreover, the applications of CdS-based photocatalysts have been discussed such as in photocatalytic hydrogen production, reduction of CO₂ to hydrocarbon fuels and degradation of pollutants. Finally, a brief perspective on the challenges and future directions for the development of CdS and CdS-based photocatalysts are also presented.

中文翻译：

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基于CdS的光催化剂

为了解决全球能源短缺和环境污染的问题，近年来，已经广泛研究了将太阳能转换成化学燃料的半导体光催化技术。关于基于半导体的光催化剂，CdS由于其对可见光响应的带隙相对较窄，并且导带边缘的负电势足以使质子减少，因​​此受到了广泛的关注。研究表明，基于CdS的光催化剂在太阳能发电和环境净化方面具有出色的光催化性能。这篇重要的评论介绍了各种CdS和CdS基光催化剂的设计和合成方面的最新进展。简要概述了CdS的基本理化性质及相关的生长机理。而且，已经讨论了基于CdS的光催化剂的应用，例如在光催化制氢，CO还原中的应用。₂以碳氢燃料和降解污染物为主。最后，简要介绍了CdS和CdS基光催化剂开发所面临的挑战和未来方向。