%0 Journal Article
%T 量子电动学诱导电磁辐射研究纳米催化剂
%A Thomas V. PREVENSLIK
%J 催化学报
%P 1073-1078
%D 2008
%X ？Goldhasbeenregardedasapoorheterogeneouscatalystbecauseitisgenerallyconsideredanonreactivemetal.Butasnanocatalysts,goldandothermetalssomehowsignificantlyenhancereactivity.Itisgenerallythoughtchemicalbondsofreactantsareweakenedbyadsorptiontonanocatalyststherebyallowingreactionstoproceedmorerapidly,buthowthisreactionproceedstocompletionisnotwellunderstood.Heregoldnanocatalystsaretreatedasunsupportednanoparticles(NPs)inasolutionofreactantmoleculesfromwhichextensionsaremadetogoldNPssupportedontitaniumdioxide.WhethertheNPsaresupportedorunsupported,enhancedcatalyticreactivitydependsonabsorbedthermalkT(kisBoltzmann′sconstantandTisabsolutetemperature)energyaccumulatedfrompriorcollisionsofreactantmolecules.TheaccumulatedkTenergyistreatedaselectromagnetictherebyallowingfrequencyup-conversionbyquantumelectrodynamics(QED)totheconfinementfrequencyoftheNP,typicallybeyondthevacuumultraviolet(VUV).Bythistheory,thechemicalreactionofreactantmoleculeshavingbondsweakenedbyadsorptioniscompletedbyQEDinducedVUVphotolysis.
%K nanocatalyst
%K nanoparticle
%K gold
%K quantumelectrodynamics
%U http://www.chxb.cn/CN/abstract/abstract17340.shtml