Antimony And Transition Metal Iron,Cobalt Nanoparticles Synthesis And Research

Nanometer materials are widely used in medical science,optics,electronics,catalyst,skin care and other fields because of their special properties.Metal nanoparticle is an important part of nanomaterials.Metal nanoparticles are the basic material of the development of various new materials.The properties of metal nanoparticles have been attracting much attention from researchers in recent decades.The special catalytic performance of metal nanoparticles has become one of the research hot spots.This paper mainly includes using methods of high temperature organic liquid phase to prepare the transition metals iron?Fe?,cobalt?Co?and minerals metal antimony?Sb?nanoparticles.The research respectively explored the influence of precursors,temperature,surfactant,and solvent on the nanoparticles morphology,structure and property to regulate the crystal structure,morphology of nanoparticles,and then achieve the preparation of metal nanoparticles with uniform size,high crystallinity,and superior performance.?1?During the process of synthesis of metal Fe NPs,we used two different methods:The first one is that the researcher made five carbonyl iron?Fe?CO?₅?react at high temperature in the presence of antimony trichloride by adopting the method of direct injection,and then prepared iron nanoparticles of the cubic phase.The researcher also explored effects of the reaction time,temperature,content of SbCl₃ on the experimental results.The second approach that the researcher prepared monodisperse cubic phase of Fe NPs by using acetylacetone iron?Fe?acac?₃?as the precursor and adopting continuous injection method,with carbon quantum dots?CDs?as the seed,and meanwhile three octyl phosphine?TOP?as a surfactant,and then prepared Fe NPs with dispersion,good size uniformity,high crystallinity and high purity by exploring effects of the temperature,the titration speed,surface active agent,the concentration of seed on the result of the experiment.?2?Using cobalt acetate?Co?OAC?₂?as the precursor,the CDs as a seed,the researcher prepared spherical Co NPs with uniform morphology by using the continuous injection method.Short clavate Co₃C NPs were also obtained by changing the amount of citric acid?CA?.Co₂P NPs were synthesized by joining the TOP as a source of phosphorus.Also,the influence of surfactant,temperature and reaction time on the experimental results was explored,and further tested the catalytic effect of Co₃C NPs and Co₂P NPs as catalysts of electrochemical hydrogen evolution.?3?During the process of synthesis of metal Sb NPs,the researcher used SbCl₃ as Sb source,CDs as a seed to prepare Sb NPs with good dispersion and high crystalline at low temperature by using direct injection.The effects of temperature,concentration of quantum dots on nanoparticles were also studied.At the same time the researcher got the morphology and size of the product by using of X-ray powder diffraction?XRD?,Transmission electron microscopy?TEM?,Scanning electron microscope?SEM?and then studied the performance of the catalytic activity of hydrogen evolution of Co₃C NPs and Co₂P NPs with the help of electrochemical workstation.The study found that Co₂P NPs has good catalytic performance,which can be used as ideal.catalytic materials for HER.