基于碳纳米管-石墨烯纳米片复合膜修饰金电极同时测定邻苯二酚和对苯二酚-论文.pdf

《基于碳纳米管-石墨烯纳米片复合膜修饰金电极同时测定邻苯二酚和对苯二酚-论文.pdf》由会员上传分享，免费在线阅读，更多相关内容在应用文档-天天文库。

1、第31卷第8期’应用化学’Vo1．31Iss．82014年8月CHINESEJ0URNAL0FAPPLIEDCHEMISTRYAug．2014SimultaneousDeterminationofCatecholandHydr0quin0neBasedonGoldElectrodeModifiedwithCarbonNanotubes—grapheneNanosheetHybridFilmsLUOQimei，WANGHuixian，LIUDengyou(ScienceCollegeofHunanAgriculturalUnivenity，Changsha410128，China

2、)AbstractAnelectrochemicalsensorforsimultaneousdeterminationofcatechol(CC)andhydroquinone(HQ)basedoncarbonnanotubes(cNTs)一graphenenanosheet(GNS)hybridfilmmodifiedgoldelectrode(GE)wasprepared．TheelectrochemicalbehaviorofCCandHQattheCNTs—GNSmodifiedGEwasinvestigatedbycyclicvoltammetry(CV)．Ther

3、esultsshowedthattheeleetrocatalyticactivityofCCandHQwassignificantlyenhancedbythemodificationofCNTs．GNShybridfilms．TheelectrochemicalsensorbasedonthehybridmodifiedGEexhibitedexcellentanalyticalperformanceforCCandHQdetectionwithalowdetectionlimitof5nmol／Land4．8nmol／L(S／N=3)，respectively，andaw

4、idelinearrangeof0．5～600p~mol／LforbothCCandHQ．Moreover，theCNTs—GNS／GEalsoshowedgoodselectivityandstability．Keywordscarbonnanotubes，graphene，nanosheetshybrid，catechol，hydroquinoneCLCnumber：0646Documentcode：AArticleID：10o0-0518(2014)089837DOI：10．3724／SP．J．1095．2014．3o469Catechol(CC)andhydroquin

5、one(HQ)aretwoimportantphenoliccompoundswhichhavebeenwidelyusedforthesynthesisofchemicalsinmanufacturingindustriesastheessentialrawmaterialsorbyproductsofvastchemicalindustries．However．CCandHQareextremelytoxictolivingbeingsandareresistanttobioticandabioticdegradation，whichusuallycoexistinenvi

6、ronmentalcontamination．Asaresult，thefastandefficientdeterminationofCCandHQhasbecomeanimportantissueintermsofenvironmentalmonitoring，neuroehemistryandclinicalchemistry．Severalconventionalmethodssuchasgasorliquidchromatography[’chemiluminescence[capillaryelectrophoresis[fluorescence【]havebeen，

7、，，developed．However，theseanalysismethodshavenumerousdisadvantages，includingtime—consuming，samplepretreatmentsandcomplexmanipulations．However．electrochemicalmethods。Jarepreferredovertheothermethodsduetoitsuniquecharacteristicssuchashighsensitivity，e