Photoelectrochemical glucose biosensor incorporating CdS nanoparticles-中国Betway体育网页登陆

摘要 AnovelphotoelectrochemicalbiosensorincorporatingnanosizedCdSsemiconductorcrystalswithenzymetoenhancephotochemicalreactionhasbeeninvestigated.CdSnanoparticlesweresynthe-sizedbyusingdendrimerPAMAMasinnertemplates.TheCdSnanoparticlesandglucoseoxidase(GOD)wereimmobilizedonPtelectrodevialayer-by-layer(LbL)techniquetofabricateabiological-inorganichybridsystem.Underultravioletlight,thephoto-effectoftheCdSnanoparticlesshowedenhancementofthebiosensortodetectglucose.PtnanoparticlesweremixedintotheNafionfilmtoimmobilizetheCdS/enzymecompositesandtoimprovethechargetransferofthehybrid.Experimentalresultsdemon-stratethedesirablecharacteristicsofthisbiosensingsystem,e.g.asensitivityof1.83A/(mMcm2),lowerdetectionlimit(1M),andacceptablereproducibilityandstability.

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Photoelectrochemical glucose biosensor incorporating CdS nanoparticles

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