Preparation Of P-type Semiconductor Photocatalyst And Hydrogen Production Performance Of Splitting Water

Solar energy is a gift from nature,with enormous energy and a constant supply of energy to the earth.According to statistics,the sum of the energy of solar radiation on the surface of the earth is equivalent to the energy supplied by 130 million 500MW power plants.However,due to the rotation and revolution of the earth,although the energy source of solar radiation is inexhaustible,the solar energy that can be utilized in a fixed area is intermittent,which makes the energy converted by solar energy unstable,which brings power to the grid.It is very difficult,so converting solar energy into easy-to-store and clean and environmentally friendly hydrogen energy and storing it is a content that scholars at home and abroad are scrambling to study.Hydrogen energy is an efficient and clean energy source.When it uses its energy,it will not cause environmental pollution.Therefore,it is necessary to carry out research to convert solar energy into hydrogen energy.The experiment was based on 316L stainless steel and ITO conductive glass to prepare a Cu/Cu₂O/CuO p-type semiconductor photocatalyst on the substrate.The Pt modification experiment of the sample was carried out by completely immersing the prepared Cu/Cu₂O/CuO p-type semiconductor photocatalyst in chloroplatinic acid solution,and the incubation time was set according to the requirements of the experiment.The experiment was at room temperature.Underneath.The photocatalytic properties of Cu/Cu₂O/CuO p-type semiconductor photocatalysts and Cu/Cu₂O/CuO p-type semiconductor photocatalysts modified by Pt were tested and characterized by SEM,EDS,XRD and XPS.The surface morphology,composition and crystal phase composition of Cu/Cu₂O/CuO p-type semiconductor photocatalyst and modified sample,and the photo-electric response of Cu/Cu₂O/CuO p-type semiconductor photocatalyst was analyzed by photocurrent response.Mott-Schottky and EIS studied the semiconductor properties of Cu/Cu₂O/CuO p-type semiconductor photocatalysts.The hydrogen production efficiency of the Cu/Cu₂O/CuO p-type semiconductor photocatalyst was analyzed in the hydrogen production test.Through the above analysis,the samples‘kong+Cu-1.05V 100s,kong+Cu-1.00V 100s,kong+Cu-0.95V 100s'all have similar photoresponse and hydrogen production efficiency.Cu/Cu₂O/CuO p-type semiconductor photocatalyst was prepared by electrodeposition method in copper sulfate lactic acid solution with 316L stainless steel microporous and conductive glass as the substrate.The conclusion obtained by photoelectric corresponding test was:when using conductive glass as the substrate the samples prepared by using the applied voltage value of-1.05 V can obtain better photoresponse test results,and the semiconductor characteristics of the samples prepared under various conditions are different.The modified Cu/Cu₂O/CuO p-type semiconductor photocatalyst showed that the photocurrent response of the sample which modified after the preparation of Cu/Cu₂O/CuO p-type semiconductor photocatalyst was higher than that of the modified substrate to prepare Cu/Cu₂O/CuO p-type semiconductor photocatalyst.The photocurrent response of the Cu/Cu₂O/CuO p-type semiconductor photocatalyst is relatively large.The prepared Cu/Cu₂O/CuO p-type semiconductor photocatalyst sample and the Pt-modified Cu/Cu₂O/CuO p-type semiconductor photocatalyst sample and the TiO₂n-type semiconductor constitute a dual optical path system,so that the p-type semiconductor for the photocathode,the n-type semiconductor is a photoanode,and the utilization of the system can be improved to some extent by using this system.