单分散金属纳米颗粒的制备与性质研究的中期报告摘要：本次研究旨在制备单分散金属纳米颗粒，并探究其物理和化学性质。首先，通过化学法制备了具有不同形貌（球形、立方体和六方柱）的金纳米颗粒，通过透射电镜（TEM）和粒度分析仪（DLS）对其形貌和粒径进行表征。结果表明，不同形状的金纳米颗粒具有不同的粒径和形貌，证明了制备方法对纳米颗粒形貌和尺寸的控制作用。接着，通过表面等离子体共振（SPR）谱学技术研究了金纳米颗粒的光学性质，结果表明不同形貌的金纳米颗粒具有不同的SPR峰位，且SPR峰位与粒径、形貌和金纳米颗粒组成有关。最后，通过紫外-可见（UV-vis）吸收谱和循环伏安（CV）技术研究了金纳米颗粒的电化学性质。结果表明，不同形貌的金纳米颗粒具有不同的电化学活性，并且可通过改变纳米颗粒形貌和组成来调控纳米颗粒的电化学性质。关键词：单分散金属纳米颗粒、形貌、物理性质、化学性质、表面等离子体共振、紫外-可见光谱、循环伏安。Abstract:Thisstudyaimstopreparemonodispersemetalnanoparticlesandinvestigatetheirphysicalandchemicalproperties.Firstly,goldnanoparticleswithdifferentshapes(spheres,cubes,andhexagonalprisms)werepreparedbychemicalmethods,andtheirmorphologyandparticlesizewerecharacterizedbytransmissionelectronmicroscopy(TEM)anddynamiclightscattering(DLS).Theresultsshowedthatgoldnanoparticlesofdifferentshapeshavedifferentparticlesizesandmorphologies,provingthecontroleffectofthepreparationmethodontheshapeandsizeofnanoparticles.Then,theopticalpropertiesofgoldnanoparticleswerestudiedbysurfaceplasmonresonance(SPR)spectroscopy.TheresultsshowedthatgoldnanoparticlesofdifferentshapeshavedifferentSPRpeakpositions,whicharerelatedtoparticlesize,morphology,andcomposition.Finally,theelectrochemicalpropertiesofgoldnanoparticleswerestudiedbyUV-visabsorptionspectraandcyclicvoltammetry(CV)technology.Theresultsshowedthatgoldnanoparticlesofdifferentshapeshavedifferentelectrochemicalactivities,andtheirelectrochemicalpropertiescanbeadjustedbychangingthenanoparticleshapeandcomposition.Keywords:monodispersemetalnanoparticles,morphology,physicalproperties,chemicalproperties,surfaceplasmonresonance,UV-visspectroscopy,cyclicvoltammetry.