In　this　article,　we　mainly　discussed　that　iridium(III)　complexes　[IrIII(L)2Cl2]PF6(L　=　4,4′-dimethyl-2,2′-bipyridine　or　4,4′-di-tert-butyl-2,2′-bipyridine)　could　be　used　as　homogeneous　catalysts　to　catalyze　aqueous　solutions　in　the　presence　of　photosensitizers　and　electronic　victims.　The　appearance　of　hydrides　was　the　key　to　hydrogen　production.　In　order　to　conduct　a　more　thorough　study　of　these　species,　here　the　catalysts　were　electrolyzed　in　CH3CN　to　continuously　obtain　electrons.　At　the　same　time,　the　presence　of　weak　acid　(nBu4NH2PO4)　introduced　hydrogen　ions,　so　that　iridium　hydride　can　be　continuously　produced.　Then　UV–vis　absorption　and　NMR　spectroscopies　were　used　to　characterize　the　hydride.　©　2022　Elsevier　B.V.