Research on the removal of H2S using dielectric barrier discharge combined with photocatalysis and the fate of sulfur in the reaction

•DBD combined with photocatalysis (PDBD) was used for the degradation of H2S.•PDBD has low byproduct and high speed and efficiency which achieve 94.99%.•The used catalyst was found to be stable, with little change after the reaction.•The surface of the catalyst detected the sulfur element.•Part of the generated sulfur could react with oxygen to form sulfur oxides.