The development of efficient heterogeneous catalysts for degrading organic pollutants or converting them into harmless and even useful products is of vital significance for environmental remediation. Herein, we reported the simple synthesis of highly active and stable graphitic carbon nitride (g-C₃N₄) nanosheet–supported ZnS composites (g-C₃N₄/ZnS) and demonstrated its excellent performances as a catalyst for the reductive conversion of 4-nitrophenol (4-NP). The prepared g-C₃N₄/ZnS composites were characterized by a collection of analytical techniques. The catalytic activity exhibited by the g-C₃N₄/ZnS composite was 4.1 and 1.9 times higher than that of g-C₃N₄ and ZnS, respectively. The remarkably increased catalytic performance of the g-C₃N₄/ZnS composite was mainly attributed to the synergistic effect of the junction or interface formed between g-C₃N₄ and ZnS, resulting in enhanced catalytic activity. Notably, the synthesized g-C₃N₄/ZnS composite was found to exhibit an outstanding catalytic activity and excellent recyclability for five cycles in the reduction of 4-NP using NaBH₄ without considerable loss of catalytic activity, demonstrating its long-term stability. This work shows significant progress for low-cost fabrication of the g-C₃N₄/ZnS composite with excellent catalytic activity.

开发用于降解有机污染物或将其转化为无害甚至有用的产物的高效多相催化剂对环境修复具有至关重要的意义。在本文中，我们报道了高活性和稳定的石墨氮化碳（gC ₃ N ₄）纳米片负载的ZnS复合材料（gC ₃ N ₄ / ZnS）的简单合成，并证明了其作为4-硝基苯酚还原转化催化剂的出色性能。 （4-NP）。通过一系列分析技术对制备的gC ₃ N ₄ / ZnS复合材料进行了表征。gC ₃ N ₄表现出的催化活性/ ZnS复合材料分别比gC ₃ N ₄和ZnS高4.1倍和1.9倍。gC ₃ N ₄ / ZnS复合材料的催化性能显着提高主要归因于gC ₃ N ₄与ZnS之间形成的结或界面的协同作用，从而增强了催化活性。值得注意的是，发现合成的gC ₃ N ₄ / ZnS复合材料在使用NaBH ₄还原4-NP的五个循环中表现出出色的催化活性和出色的可回收性。没有明显的催化活性损失，证明了其长期稳定性。这项工作显示出低成本制造具有出色催化活性的gC ₃ N ₄ / ZnS复合材料的重大进展。