Proceedings of The 7th International Conference on Innovation in Science and Technology
Hydrogen evolution reaction in the presence of WS2/g-C3N4 nanocomposite as photocatalyst
Mahshid Farahi, Tayebeh shamspur, Ali Mostafavi, and Fariba Fathirad
The photoelectrochemical water splitting method under visible-light illumination has attracted a lot of attention from all the world because of global need for clean energy and removal of pollution. Due to strong mechanical, physicochemical stability and marvelous electronic features, graphitic carbon nitride is a suitable no metal photocatalyst for hydrogen generation reaction. But the issue of super recombination rate of charge carriers is a significant obstacle in the efficiency that should be considered. It seems that coupling g-C3N4 with metals can enhance the photocatalytic efficiency. In the present research, we checked out the function of tungsten disulfide coupled with graphitic carbon nitride (WS2/g-C3N4) on a semiconductor fluorine-doped tin oxide (FTO) glass in the alkaline solution. The nanoparticles were prepared by proper hydrothermal and calcination approaches and investigated by XRD analysis. Electrochemical reviews were done to measur the catalytic performance of prepared catalyst in alkaline solution under light irradiation with electrochemical techniques. The desired synthesized photocatalyst showed the Tafel slope of 61 mV dec–1 and appropriate durability in alkaline solution for hydrogen evolution reaction (HER) in the presence of visible light. The benefits of using this proper photocatalys for hydrogen generation in an industrial-scale were Low hydrogen reduction overpotential, proper electrocatalytic durability and high electrochemical function.
Keywords: Heterogeneous nanocatalyst, g-C3N4, Hydrogen evolution.