Functionalization of sheet structure Co-Mo-S with Ni(OH)(2) for efficient photocatalytic hydrogen evolution

摘要

In this paper, the new composite material Co-Mo-S/Ni(OH)(2) has high hydrogen evolution ability under photoreaction, the hydrogen evolution of Co-Mo-S/Ni(OH)(2) composite material reaches 357 mu mol after reaction 3 h, and the catalyst still exhibits high photocatalytic activity after four cycles under light response. It shows that this new catalyst has high activity and stability. The results of XPS, TEM, SEM and XRD indicate that the composite catalyst is successfully synthesized. The results of PL and electrochemical experiments show that Ni(OH)(2) attached to Co-Mo-S can increase the transfer of photogenerated electrons and reduce the recombination of electrons and holes. From the UV-visible and BET characterization, the presence of Ni(OH)(2) increases the range of response of the Co-Mo-S to sunlight, the pore volume and surface range, which improves the absorption capacity of the catalyst for ErB. Therefore, Co-Mo-S/Ni(OH)(2) has excellent application prospect.