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CuO was synthesized by thermal decomposition of Cu(NO3)2·3H2O at various temperatures and characterized by powder X-ray diffractometry(XRD) as well as scanning electron microscopy(SEM).The effects of calcination temperature,category of sacrificial reagent,initial sacrificial reagent concentration,and Ag loading content on the photocatalytic activity of the as-obtained CuO sample were investigated.The results show that the as-obtained CuO exhibits high activity for photocatalysis of H2 evolution reaction(HER) in oxalic acid solution under simulated sunlight irradiation.The highest photocatalytic activity of the as-obtained CuO was achieved at the calcination temperature of 1000℃,and oxalic acid was used as the sacrificial reagent with the concentration 0.05 mol/L.H2 evolution rate is as high as 2.98 mmol/(h·g) with 2%(mass fraction) loaded Ag.The possible photocatalytic reaction mechanism on the CuO photocatalyst for HER in oxalic acid solution was also discussed.
CuO was synthesized by thermal decomposition of Cu (NO3) 2 · 3H2O at various temperatures and characterized by powder X-ray diffractometry (XRD) as well as scanning electron microscopy (SEM). The effects of calcination temperature, category of sacrificial reagent, initial The results show that the as-obtained CuO exhibits high activity for photocatalysis of H2 evolution reaction (HER) in oxalic acid solution under simulated sunlight irradiation.The highest photocatalytic activity of the as-obtained CuO was achieved at the calcination temperature of 1000 ° C, and oxalic acid was used as the sacrificial reagent with the concentration 0.05 mol / L. H2 evolution rate was as high as 2.98 mmol / ( h · g) with 2% (mass fraction) loaded Ag. The possible photocatalytic reaction mechanism on the CuO photocatalyst for HER in oxalic acid solution was also discussed.