Enhanced photocatalytic hydrogen evolution from aqueous solutions on Ag2S/Ag heteronanostructure

摘要

A new approach for synthesis of hybrid Ag2S/Ag heteronanostructure based on hydro chemical bath deposition with the using of Trilon BD has been suggested. The synthesized Ag2S/Ag heteronanostructure has shown higher catalytic activity in the hydrogen evolution from the aqueous solution of Na2S/Na2SO3 under irradiation by light with wavelength of 450 nm than nanostructured Ag2S photocatalyst. The main reason for the enhanced photoactivity of Ag2S/Ag heterostructure as compared with Ag2S catalyst is a presence of Ag, and also nonstoichiometry of silver sulfide in this heteronanostructure which leads to the improved charge separation as compared with silver sulfide catalyst. (C) 2017 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.