Preparation And Performance Study Of ITO Nanowire Arrays And Their Composite Material

One-dimensional nanostructures are different from other dimensional structures in their growth characteristics.The movement of inner electrons in a restricted or unrestricted direction,exhibits a special one-dimensional carrier conduction,which makes it have an extraordinary density of electrons and widely used in battery materials,photoelectric catalysis,gas sensing and other fields.However,using simpler and cheaper methods to achieve one-dimensional nanomaterials preparation remains difficult.In order to further improve the comprehensive properties of one-dimensional nanomaterials,the surface coating of nanocomposites is extensively explored.In addition,the development of coating technology is particularly important.The nanoscale size of one-dimensional nanostructures itself is a challenge for the nanochemistry of coated materials.Therefore,the general method is not available in the face of nanoscale cladding.This paper adopts anodized alumina（AAO）and vacuum mechanical injection to fabricate In Sn nanowires,and then coats the precious metal nanoparticles on the nanowires through pre-discharge-electrodeposition.Finally calcining the oxidation and converting the In Sn nanowire matrix into indium oxide ti n.（ITO）nanowire,obtained precious metal nanoparticles-ITO nanowire composites,to realize the functional improvement of nanocomposites.The specific conclusions are as follows:（1）The precious metal coating can effectively improve the degradation performance of the metal oxides.For the first time,the precious metal Ag nanoparticles are covered onto the ITO nanowires through the pre-discharge-electrodeposition method,and the Ag-Ag₂O/ITO composite material is synthesized.This includes the following st eps:AAO templates are used to assist vacuum mechanical injection device,and inject alloys to get the In Sn alloy nanowires array.Then in the lithium ion battery,the nanowires array generates a large amount of negative charge by discharge process,and th e negatively charged nanowires array is evenly dispersed in the Ag NO₃ solution through static electricity,the Ag⁺is reducing to surface of the nanowires.Finally,Ag-Ag₂O/ITO was burned in the air.The tight combination of Ag-Ag₂O and ITO nanowires impro ves the stability of the composite materials.The 5-20 nm Ag-Ag₂O nanoparticles make the material have a larger surface area and more active sites.The degradation rate of the solution reaches 99%,and the composite material shows excellent photocatalytic activity.（2）Premium metal coating layers can also effectively improve the sensor performance of metal oxides.The pre-discharge-electrodeposition method will be used to cover the Pt nanoparticles on the ITO nanowires.Through this conversion method of covering,the nanowires still maintain one-dimensional line-shaped after being burned by high temperature environment.Pt nanoparticles are evenly and closely attached to maintain the nanowire shape.The electrochemical detection of L-ascorbic acid using Pt/ITO composite materials was tested,and the relative standard deviation of ascorbic acid in actual samples was 2-3%,indicating that Pt/ITO composite materials have excellent reliability in complex situations.（3）The precious metal coating can also be coated with the metal oxides to accelerate the thermal conversion of catalytic organic organisms.Ru nanoparticles are used to cover the ITO nanowires.The R u/ITO nanowires composite material was then tested to the thermal degradation of cellulose and reinophenol polyoxyethylene ether.By using ITO nanowires and R u/ITO nanowires for control experiments,it has been proved that Ru coated ITO nanowire s composite can effectively promote the breaking of ether bonds and generate alcohol-containing compounds,thereb y catalyzing the decomposition of cellulose.