Abstract
Pd nanoparticles with different sizes and dispersed states were prepared. Their infrared optical properties were studied with CO molecule probe. The infrared spectroscopic investigation revealed that Pd_(n)of 6.6 nm and Pd_n~(cube)of 100～150nmexhibit normal IR absorption. The center of IR bands are around 1 970 cm~(-1 )and 1 910cm~(-1). Pd_(n)is introduced into the surface of electrode, and is induced by interface electric fieldto form the aggregation of nanoparticles Pd_n~(ag). The Pd_n~(ag)has a different IR optical property from Pd_(n). The direction of IR absorption band of Pd_n~(ag)is changed from normal to abnormal at 1 970cm~(-1)with the increase of polarization time. The present study demonstrated progressively the reversion of direction of IR band is general phenomena produced by the aggregation nanoparticles that there is interparticle interaction.
Keywords
Pd nanoparticles, Dispersed, Aggregation, IR optical properties
Publication Date
2004-05-28
Online Available Date
2004-05-28
Revised Date
2004-05-28
Received Date
2004-05-28
Recommended Citation
Yan-xia JIANG, Hong-gang LIAO, Wei CHEN, Shi-gang ment of Chemistry Xiamen University SUN, Xiamen Xiamen, China China.
Studies of Infrared Optical Properties of Palladium Nanoparticles with Different Sizes and Dispersed States[J]. Journal of Electrochemistry,
2004
,
10(2): 127-132.
DOI: 10.61558/2993-074X.1556
Available at:
https://jelectrochem.xmu.edu.cn/journal/vol10/iss2/2
References
[1] HuangHZ.AnalysisofNanoscaleMaterials[M].Beijing:ChemicalIndustryPress,2003.1～356.
[2] OsawaM.IkedaM,Surface-enhancedinfraredabsorptionofp nitrobenzoicaciddepositedonsilverIslandFilms:contributionsofelectromagneticandcemicalmechanisms[J].J.Phys.Chem.,1991,95:9914～9919.
[3] LuGQ,SunSG,CaiLR,etal.InsituFTIRspectroscopicstudiesofadsorptionofCO,SCN-andPoly(o phenylenediamine)onelectrodesofnanometerthinfilmsofPt,PdandRh:Theabnormalinfraredeffects(AIREs)[J].Langmuir,2000,16:778～786.
[4] SunSG,ZhengMS,LuGQ,etal.StudiesofabnormalinfraredeffectsofnanometerthinfilmsoftransitionMetalsandalloysinacidsolutions[J].Electrochemistry,2000,6:25～30.
[5] SunSG.AbnormalInfraredEffectsofNanometer-ScaleThinFilmMaterialofPlatinumGroupMetalsandAlloysatElectrode-ElectrolyteInterfaces,Chapter21of"CatalysisandElectrocatalysisatNanoparticleSurfaces[M].NewYork:MarcelDekker,Inc.,2003.785～826.
[6] StorhoffJJ,ElghanianR,MucicRC,etal.One-potcolorimetricdifferentiationofpolynucleotideswithsinglebaseimperfectionsusinggoldnanoparticleprobes[J].J.Am.Chem.Soc.,1998,120:1959～1964.
[7] ChenW,SunSG,ZhouZY,etal.IRopticalpropertiesofPtnanoparticlesandtheiragglomeratesinvestigatedbyinsituFTIRSusingCOasprobemolecule[J].J.Phys.Chem.B,2001,107:9808～9812.
[8] LiY,BooneE,El-SayedMA.SizeeffectsofPVP-PdnanoparticlesonthecatalyticSuzukireactionsinaqueoussolution[J].Langmuir2002,18:4921～4925.
[9] WolterK,SeiferthO,KuhlenbeckH,etal.InfraredspectroscopicinvestigationofCOadsorbedonPdaggregateddepositedonanaluminamodelsupport[J].SurfaceScience,1998,399:190～198.
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