In this study, an efficient photocatalytic route is developed for degradation of carbendazim fungicide under visible light irradiation using Bi₂S₃/BiFeO₃ heterojunction materials as photocatalyst. The heterojunction system prepared by a two-step process contains rhombohedral BiFeO₃ and orthorhombic Bi₂S₃ as crystalline phases. Morphologically, the Bi₂S₃/BiFeO₃ materials contain BiFeO₃ nanoplates and Bi₂S₃ nanorods in close microscopic contact. The Bi₂S₃/BiFeO₃ materials exhibited improved visible light absorption, enhanced charge carrier separation and efficient photocatalytic activity achieving 96% degradation within 2 h of reaction. The mechanistic pathway for carbendazim degradation has been elucidated using GC-Mass analysis and radical scavenger experiments.

在这项研究中，开发了一种有效的光催化路线，以Bi ₂ S ₃ / BiFeO ₃异质结材料为光催化剂在可见光照射下降解多菌灵杀菌剂。通过两步法制备的异质结体系包含菱形BiFeO ₃和正交晶体Bi ₂ S ₃作为结晶相。在形态上，Bi ₂ S ₃ / BiFeO ₃材料包含紧密微观接触的BiFeO ₃纳米板和Bi ₂ S ₃纳米棒。Bi ₂ S ₃ / BiFeO ₃材料显示出改善的可见光吸收，增强的电荷载流子分离和有效的光催化活性，可在反应2小时内实现96％的降解。使用GC-Mass分析和自由基清除剂实验已经阐明了多菌灵降解的机理。