It is an effective way to construct graphic carbon nitrate (g-C₃N₄) based heterostructures with strong interfacial effect for improving their photocatalytic performance. In this paper, Mo was introduced into g-C₃N₄ nanosheets as seeds to create MoS₂/g-C₃N₄ (MSCN) composite material by a solvothermal synthesis at low temperature. The interface between MoS₂ and g-C₃N₄ was therefore improved, in which MoS₂ exhibited 1T and 2H phases. Compared with pure CN, the MSCN composite material broadened the light absorption range, enhanced the charge transfer kinetics and reduced the recombination of photogenerated carriers. The photo- and electro-chemical characterization indicated that sample MSCN-6 revealed the best photocatalytic performance, in which the degradation rate of 2,4-dichlorophenol was up to 84.1% and the photocatalytic hydrogen production rate was 1683.9 μmol/g/h, which were 1.67 and 3.61 times of those of pure g-C₃N₄, respectively. The quenching experiment of the active substance demonstrated that h⁺ was the contributing active substances. The result provides new idea for designing composite photocatalysts with high efficiency, high visible light absorption and strong interface coupling.

这是构建具有强界面效应的图形硝酸碳（gC ₃ N ₄）基异质结构以提高其光催化性能的有效方法。在本文中，将Mo作为种子引入gC ₃ N ₄纳米片，通过低温溶剂热合成制备MoS ₂ /gC ₃ N ₄ (MSCN)复合材料。因此改进了MoS ₂和 gC ₃ N ₄之间的界面，其中 MoS ₂表现出 1T 和 2H 相。与纯CN相比，MSCN复合材料拓宽了光吸收范围，增强了电荷转移动力学，减少了光生载流子的复合。光电化学表征表明样品MSCN-6表现出最好的光催化性能，其中2,4-二氯苯酚的降解率高达84.1%，光催化产氢率为1683.9 μmol/g/h，分别是纯gC ₃ N _{4 的}1.67和3.61倍。活性物质的猝灭实验表明 h ⁺是贡献的活性物质。该结果为设计具有高效率、高可见光吸收和强界面耦合的复合光催化剂提供了新的思路。