Controllable Structure And Photocatalytic Activity Of Based Noble-Metal-Free Photocatalyst

With the continuous development of human society,the issue of energy and environment has become more and more prominent,and it has become a recognized two major factors hindering the development of human society.On the one hand,the limited fossil fuels are becoming increasingly difficult to meet the needs of human development.On the other hand,the use of fossil fuels will cause a lot of environmental pollution and further aggravate the environmental problems.Therefore,the development of nuclear energy,light energy,Renewable energy such as matter has become the subject of today's scientific community.Among them,the use of light energy,including light energy transfer and light energy conversion can be two major aspects.Since 70%of the Earth's surface is covered by water,how to use light energy to catalyze the decomposition of water to produce hydrogen becomes an attractive and promising project.At present,most of the catalysts used in the light-energy catalytic hydrolysis reaction contain precious metals such as silver(Ag)and platinum(Pt),which are the factors restricting their industrialization.In this paper,a complex of Mo2C@C,Ni(OH)2 and CdS quantum dots,which is a cheap metal compound,is used as a catalyst for the catalytic hydrogen production.The experimental results show that it is a catalyst with good catalytic activity and high stability.In this paper,the photocatalytic hydrogen evolution activity of Mo2C@C and CdS complexes was investigated.Hydrothermal method and calcination annealing were used to obtain Mo2C@C powder.The CdS quantum dots were loaded on the CdS quantum dots to adjust the reaction conditions to obtain the optimized hydrogen production.The XRD,UV,IR,SEM,TEM,BET and other analytical methods The products were characterized.The photocatalytic hydrogen production activity of CdS/Mo2C@C under different conditions was discussed.The optimum hydrogen production activity was 2 times that of Pt.The flower-like Ni(OH)2 promoter was prepared by hydrothermal method and CdS/Ni(OH)2 catalyst was loaded on the CdS quantum dots.The prepared catalysts were characterized by XRD,UV,SEM,TEM and XPS.The chemical composition,pore structure and surface properties of the catalyst were characterized,and the catalyst activity under different reaction conditions was studied.The optimal hydrogen production activity was more than 4 times that of Pt.