College of Material Science and Engineering, Guilin University of Technology, Guilin 541004, People's Republic of China.
College of Material Science and Engineering, Guilin University of Technology, Guilin 541004, People's Republic of China; Guangxi Ministry-Province Jointly-Constructed Cultivation Base for State Key Laboratory of Processing for Nonferrous Metal and Featured Materials, Guilin University of Technology, Guilin 541004, People's Republic of China.
J Colloid Interface Sci. 2019 Jan 15;534:343-349. doi: 10.1016/j.jcis.2018.09.041. Epub 2018 Sep 15.
A series of noble-metal-free NiS-loaded g-CN hybrid composites were prepared via simple hydrothermal method. Benefited from the wider spectral response range and the effective separation of photoelectron-holes of g-CN-NiS heterojunction catalysts, as well as the rich unsaturated active S atoms on the NiS with S, the composite catalysts has prominent photocatalytic performance for H evolution. Remarkably, the optimal composite photocatalysts achieved an average hydrogen production rate as high as 715.83 μmol/h/g in 3 h under visible-light irradiation, which is 2.75 times as high as that of precious metal Pt (259.5 μmol/h/g) as a co-catalyst. Besides, the composite catalyst still shows prominent photocatalytic performance for H evolution after three continuous photocatalytic reaction cycles for 9 h. This study provided a facile method to build a low-cost but effective metal sulfide co-catalyst for hydrogen production under visible light irradiation.
通过简单的水热法制备了一系列负载 NiS 的无贵金属 g-CN 杂化复合材料。得益于 g-CN-NiS 异质结催化剂更宽的光谱响应范围和光生载流子的有效分离，以及 NiS 上富含不饱和活性 S 原子的 S，该复合催化剂在 H 2 演化方面表现出突出的光催化性能。值得注意的是，在可见光照射下，优化后的复合光催化剂在 3 h 内的平均产氢速率高达 715.83 μmol/h/g，是贵金属 Pt（259.5 μmol/h/g）作为共催化剂的 2.75 倍。此外，该复合催化剂在 9 h 的 3 次连续光催化反应循环后仍表现出突出的 H 2 演化光催化性能。这项研究为在可见光照射下构建低成本但有效的金属硫化物共催化剂用于制氢提供了一种简便的方法。
