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Synthesis of octahedral and cubic Cu2O microcrystals in sub-and super-critical methanol and their photocatalytic performance

Synthesis of octahedral and cubic Cu2O microcrystals in sub-and super-critical methanol and their photocatalytic performance

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时间：2019-08-06

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1、JMaterSci(2015)50:41154121DOI10.1007/s10853-015-8967-3SynthesisofoctahedralandcubicCu2Omicrocrystalsinsub-andsuper-criticalmethanolandtheirphotocatalyticperformance1,21131ShuangmingLi•XinGe•ShengnanJiang•XiaonaPeng•ZheZhang•1,21,2WenxiuLi•SansanYuReceived:19January2015/Accepted:10March

2、2015/Publishedonline:20March2015ÓSpringerScience+BusinessMediaNewYork2015AbstractAsimpleandpotentiallyscalablesub-andsu-displayedoctahedralandcubicmorphologywithanaver-per-criticalmethanoltechniquewasappliedtosynthesizeageedgelengthof4and2lmbysolutionandsolidcuprousoxide.Cu2Omicrocryst

3、alswithtwomorphologiesfeedingmethods,respectively.Theformationandcrystalwereobtainedinmethanolofsubcriticaldomainbyad-growthmechanismofCu2Oinsubcriticalmethanolwerejustingthefeedingmethods.Theeffectsofthereactionalsoproposedonthebasisofaboveresults.Furthermore,time,temperature,pressure

4、,andfeedingmethodonthethetwomicrocrystalswereemployedascatalystsintheformationofCu2Omicrocrystalswereinvestigated.XRD,photodecompositionofnegativelychargedmoleculeSEM,andXPSwereappliedtoanalyzethecompositionmethylorange.Resultsshowedthatbothmicrocrystalsandmorphologyofproducts.Resultss

5、howedthatpurepossessedexcellentphotocatalyticactivities.However,thecuprousoxidecouldbeobtainedinsubcriticalmethanolofobviousdifferencebetweencubicandoctahedralinpho-230°C,7.8MPafor15min.Thetwoas-obtainedproductstocatalyticperformancewasnotfoundinthescaleofmi-crometer(24lm).&SansanYussy

6、u@syuct.edu.cnIntroductionShuangmingLilishuangming@syuct.edu.cnCu2O,withabulkdirectband-gapenergyof2.17eV,isanXinGeattractivep-typesemiconductor[1].Ithasattractedmuchgexin6875093@126.cominterestrecentlyduetoitsexcellentcatalytic,electrical,ShengnanJiangsensing,andconductivepropertiesan

7、dhasbeenwidely13889827175@163.comappliedinvariousfields,includingorganicsynthesis[24],XiaonaPengphotocatalysis[57],solarenergyconversion[8],gassyuctlinchan@126.comsensors[9,10],lithiumionbatteries[1113],antibacterialZheZhang[14,15],andoftenusedashybridbycompoundingwithzhangzhezhanghe@

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