A review of CdS photocatalytic nanomaterials: Morphology, synthesis methods, and applications

Environmental pollution, energy shortages and the greenhouse effect have become global problems. Photocatalysis has proven to be an effective means of solving these problems due to its high efficiency, energy efficiency and mild conditions. Among many semiconductor materials, CdS materials have received widespread attention and research with the advantages of simple preparation method, controlled morphology, strong visible light response, and ability to form stable heterojunctions with other catalysts. However, the toxicity and photocorrosion of CdS-based photocatalysts severely limit their wide application in photocatalysis. In this paper, the synthesis methods and modification strategies of different morphology CdS are reviewed. In addition, we compare the performance of different CdS-based photocatalysts for applications in the degradation of pollutants in water, photolysis of water and CO2 reduction for the production of H2 and CH4 clean fuels. The current research status, challenges and development directions of CdS-based photocatalysts are also briefly introduced. In anticipation of providing ideas and theoretical guidance for more comprehensive development of efficient CdS-based photocatalysts.