The development of transition metal chalcogenide (TMC) colloidal photocatalysts has become crucial for applications in ecological remediation. Atrazine (AZ) is recognized as a potentially toxic herbicide used in many agricultural and food industries. In this paper, we introduce a facile solution route to prepare hexagonal CuS nanoparticles by a one-step sol-gel method. Then, these CuS nanoparticles are assembled on various amounts of graphene oxide nanosheets to produce colloidal CuS@rGO photocatalysts. Investigations of numerous structural, optical, and optoelectrical properties of CuS reveal the importance of adding rGO. Adding 7.0 wt% rGO to CuS enhances light absorption and decreases the bandgap from 2.36 to 1.97 eV. In addition, the optimized CuS@rGO (at 7% rGO) displays superior photooxidation of AZ (as a common pollutant) in just 20 min at a dose of only 0.8 gL⁻¹, with outstanding stability. The increased photocatalytic ability is ascribed to the improved surface properties of the obtained CuS and photogenerated carrier recombination suppression by introducing rGO. This study realizes the importance of applying rGO-supported TMCs for the elimination of herbicides in water.

过渡金属硫属化物（TMC）胶体光催化剂的开发对于生态修复中的应用至关重要。r去津（AZ）被公认为在许多农业和食品工业中使用的潜在毒性除草剂。在本文中，我们介绍了一种通过一步法溶胶-凝胶法制备六角形CuS纳米颗粒的简便方法。然后，将这些CuS纳米粒子组装在各种数量的氧化石墨烯纳米片上，以制备胶体CuS @ rGO光催化剂。对CuS的许多结构，光学和光电特性的研究表明添加rGO的重要性。向CuS中添加7.0 wt％rGO可增强光吸收，并将带隙从2.36 eV降低到1.97 eV。此外，^-1，具有出色的稳定性。通过引入rGO，提高的光催化能力归因于所获得的CuS的改善的表面性质和光生载流子重组的抑制。这项研究认识到应用rGO支持的TMC消除水中除草剂的重要性。