Liang Zhangqian, Meng Xiangfa, Xue Yanjun, Chen Xiaoyue, Zhou Yanli, Zhang Xiaoli, Cui Hongzhi, Tian Jian
School of Materials Science and Engineering, Shandong University of Science and Technology, Qingdao 266590, China.
School of Environmental and Material Engineering, Yantai University, Yantai 264005, China.
J Colloid Interface Sci. 2021 Sep 15;598:172-180. doi: 10.1016/j.jcis.2021.04.066. Epub 2021 Apr 17.
Low-cost, highly active and efficient alternative co-catalysts that can replace precious metals such as Au and Pt are urgently needed for photocatalytic hydrogen evolution reaction (HER). Herein, we show that 1T phase MoSe can act as the co-catalyst in the 1T-MoSe/g-CN composites and we synthesize this composite by a one-step hydrothermal method to promote photocatalytic H generation. Our prepared 1T-MoSe/g-CN composite exhibits highly enhanced photocatalytic H production compared to that of g-CN nanosheets (NSs) only. The 7 wt%-1T-MoSe/g-CN composite presents a considerably improved photocatalytic HER rate (6.95 mmol·h·g), approximately 90 times greater than that of pure g-CN (0.07 mmol·h g). Moreover, under illumination at λ = 370 nm, the apparent quantum efficiency (AQE) of the 7 wt%-1T-MoSe/g-CN composite reaches 14.0%. Furthermore, the 1T-MoSe/g-CN composites still maintain outstanding photocatalytic HER stability.
光催化析氢反应（HER）迫切需要低成本、高活性且高效的替代助催化剂来取代诸如Au和Pt等贵金属。在此，我们表明1T相MoSe₂可作为1T-MoSe₂/g-C₃N₄复合材料中的助催化剂，并且我们通过一步水热法合成这种复合材料以促进光催化产氢。与仅g-C₃N₄纳米片（NSs）相比，我们制备的1T-MoSe₂/g-C₃N₄复合材料表现出高度增强的光催化产氢性能。7 wt%-1T-MoSe₂/g-C₃N₄复合材料呈现出显著提高的光催化HER速率（6.95 mmol·h⁻¹·g⁻¹），约为纯g-C₃N₄（0.07 mmol·h⁻¹·g⁻¹）的90倍。此外，在λ = 370 nm光照下，7 wt%-1T-MoSe₂/g-C₃N₄复合材料的表观量子效率（AQE）达到14.0%。此外，1T-MoSe₂/g-C₃N₄复合材料仍保持出色的光催化HER稳定性。
