Rapid Fabrication of CdS Nanocrystals with Well Mesoporous Structure Under Ultrasound Irradiation at Room Temperature-中国期刊网

摘要 Sphere-likemesoporousCdSnanocrystalswithhighcrystallinityandbigsurfaceareaweresuccessfullyfabricatedbyultrasoundirradiationatroomtemperature.Theas-synthesizedCdSwithandwithoutultrasoundirradiationwasinvestigatedbythecharacterizationsofX-raydiffraction(XRD),scanningelectronmicroscopy(SEM),transmissionelectronmicroscopy(TEM),andBrunauer-Emmett-Teller(BET)surfaceareas.ThephotocatalyticactivityoftheCdSwasevaluatedbyphotocatalyticdegradationofmethylorangeundervisiblelight(λ>420nm)irradiation.ApossiblemechanismfortheformationoftheCdSnanocrystalswithmesoporousstructureunderultrasoundirradiationwasproposed.TheresultsshowthatboththetemplateroleofthetriblockcopolymerofP123andtheeffectofultrasound-inducedaggregationaremainlyresponsiblefortheformationofmesoporousstructure.Ontheotherhand,theenergygeneratedfromacousticcavitationcaneffectivelyacceleratethecrystallizationprocessoftheamorphousCdS.

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Rapid Fabrication of CdS Nanocrystals with Well Mesoporous Structure Under Ultrasound Irradiation at Room Temperature

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Rapid Fabrication of CdS Nanocrystals with Well Mesoporous Structure Under Ultrasound Irradiation at Room Temperature

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