In this work, CoMoS (CMS) nanoparticles were synthesized using a one-step hydrothermal approach, series CMS/g-CN photocatalysts with various CMS amount were obtained using a physical solvent evaporation method. The investigation indicates that introducing CMS as cocatalysts can greatly enhance the H production activity of g-CN by two orders of magnitude. The H production rate reaches up to 17607 μmol·g·h over 40 % CMS/g-CN, resulting in a 185-fold increase when compared to the unmodified g-CN (94.8 μmol·g·h), far better than 40 % MoS/g-CN (125.2 μmol·g·h), 40 % CoS/g-CN (7948.6 μmol·g·h), even widely 3 % Pt/g-CN (12803 μmol·g·h). The improvement can be ascribed to the Schottky junction effect between CMS and g-CN, the highly conductive CMS can receive electrons from the conduction band of g-CN, preventing charge recombination. Meanwhile, CMS can obviously lower the H evolution potential and provide more active site for the H evolution reaction, those all lead to a faster H evolution kinetics. Additionally, CMS as a cocatalyst offers advantages such as simple preparation, low cost, and remarkable effectiveness, making it highly promising for further development.

中文翻译：

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导电 Co1.5MoS3.2 比 g-C3N4 更能促进光催化产氢。

本工作采用一步水热法合成了CoMoS（CMS）纳米粒子，采用物理溶剂蒸发法得到了不同CMS量的系列CMS/g-CN光催化剂。研究表明，引入CMS作为助催化剂可以使g-CN的产氢活性大大提高两个数量级。 40 % CMS/g-CN 的产氢率高达 17607 μmol·g·h，与未修饰的 g-CN (94.8 μmol·g·h) 相比提高了 185 倍，远优于 40% CMS/g-CN。 % MoS/g-CN (125.2 μmol·g·h)、40 % CoS/g-CN (7948.6 μmol·g·h)，甚至广泛为 3 % Pt/g-CN (12803 μmol·g·h)。这种改善可归因于CMS和g-CN之间的肖特基结效应，高导电性的CMS可以从g-CN的导带接收电子，从而防止电荷复合。同时，CMS可以明显降低析氢电位，为析氢反应提供更多的活性位点，这些都导致更快的析氢动力学。此外，CMS作为助催化剂具有制备简单、成本低廉、效果显着等优点，极具发展前景。