Study On Structure And Performance Of New Nickel/Nanoparticle Composite Coating

With the rapid development of my country’s economy,the discharge of printing and dyeing wastewater has caused serious pollution to water resources and the environment.Photocatalytic printing and dyeing wastewater treatment technology uses light energy to save energy,green and efficiently degrade a wide range of harmful organic substances contained in printing and dyeing wastewater into harmless small molecules such as water and carbon dioxide.In this paper,foamed copper is used as the supporting substrate of the photocatalytic material,and TiO₂micron particles and n-type semiconductor In₂O₃nanoparticles with a narrower band gap are supported and fixed on the foamed copper substrate by TiO₂/In₂O₃micro-nano double particle metal nickel composite electrodeposition technology.And make TiO₂micron particles and part of In₂O₃nano-particles composite,so as to obtain foamed copper-based support（TiO₂/In₂O₃）-Ni composite electrodeposition layer photocatalytic material.The composite electrodeposition process was optimized by orthogonal experiment.The morphology,composition and organization of the composite electrodeposited layer were analyzed by scanning electron microscope（SEM）,X-ray energy spectrum（EDS）surface scanning and X-ray diffractometer（XRD）;the composite electrodeposited layer was calculated according to the results of cyclic voltammetry With methyl orange as an indicator,the platinum-cobalt colorimetric method was used to evaluate the photocatalytic performance of composite electrodeposited layer materials.The results show that the surface of the composite electrodeposited layer is denser and supports more particles fixed on the deposited layer,without obvious cracks,and has an uneven shape,which can provide more active points to increase the contact surface area in the photocatalytic process.The（TiO₂/In₂O₃）-Ni composite electrodeposition layer prepared by the TiO₂/In₂O₃micro-nano double particle metal nickel composite electrodeposition process is tightly combined with the foamed copper matrix,and the TiO₂micron particles and In₂O₃nanoparticles are distributed in the nickel deposition layer.Ti and In elements are mainly concentrated on the surface of the pores.In the TiO₂/In₂O₃micro-nano double-particle metal nickel composite electrodeposition process,the influence of the concentration of TiO₂micron particles,the concentration of In₂O₃particles,the composite electrodeposition voltage and the composite electrodeposition time on the photocatalytic performance of the composite electrodeposition process decreased.Optimum conditions of TiO₂/In₂O₃micro-nano double particle metal nickel composite electrodeposition process（15g/L TiO₂,10g/L In₂O₃,9V electrodeposition voltage,5min electrodeposition time）prepared by the foamed copper-based load（TiO₂/In₂O₃）The photocatalytic performance of the-Ni composite electrodeposition layer material is effectively improved,the chromaticity reduction PCU is 61,and it has a larger electrochemical active area.Under the conditions of different process parameters,the highest peak of the foamed copper loaded（TiO₂/In₂O₃）-Ni composite electrodeposition layer material is mainly concentrated in the D1-D3 area,indicating that this is the case in the electrochemical electrodeposition process under different process conditions.Chemical control nucleation.The value of the smallest relative energy is mostly distributed in the D4-D6 region,and the energy ratio of the low-frequency region D6-D8 is also increasing,and finally a dense and thick electrodeposited layer is formed on the surface of the cathode region.