第42卷第4期2022年12月Vol.42,No.4Dec.2022化学传感器CHEMICALSENSORS基金项目:国家自然科学基金(21964022)*通信联系人,slindar809@126.comN、P掺杂r-氧化石墨烯修饰电极用于检测乳酸江湖滨1,陈俊潮2,李群芳2*(1.湖北省恩施市鹤峰县下坪乡民族中心学校,湖北恩施,445000)(2.湖北民族大学化学与环境工程学院,湖北恩施,445000)摘要:以三聚氰胺作为氮源,植酸作为磷源,在900℃下将氧化石墨烯碳化为还原氧化石墨烯,得到N、P掺杂材料900-RNPG,利用SEM、EDS技术表征N、P原子被成功掺入材料,将该材料滴涂到裸玻碳电极GCE烘干,再滴涂乳酸脱氢酶和NAD+,得到乳酸传感器900-RNPG/GCE。通过电化学交流阻抗法EIS、循环伏安法CV、计时电流法it,研究了900-RNPG/GCE传感器对乳酸的电化学特性,在最优条件下,该传感器对乳酸在100μmol/L-7mmol/L范围内有良好的线性范围,检出限为33.4μmol/L(S/N=3),具有较高的响应电流值、较宽的线性范围、较低的检出限以及较强的抗干扰能力,可以有效应用于乳酸含量检测。关键词:氮磷掺杂;还原氧化石墨烯;乳酸;电化学传感器DetectionoflacticacidbasedonNandPco-dopedgrapheneelectrobiosensorJiangHu-bin1,ChenJun-chao2,Liqun-fang2(1.XiapingCenterMiddleSchoolofHefengCounty,Enshi,445000,China)(2.SchoolofChemistryandEnvironmentalEngineering,HubeiMinzuUniversity,Enshi,445000,China)Abstract:NandPco-dopedgraphen(900-RNPG)withexcellentelectrochemicalpropertiesweresynthesizedbymelamineasnitrogensourceandphyticacidwasusedasphosphorussource,andGOreducedtographeneoxideat900℃.SEMandEDStechniqueswereusedtocharacterizethatNandPatomsweresuccessfullydopedintothenanomaterials.thenanomaterialsandLDHandNAD+weredroppedontothesurfaceofGCEtoobtainalacticacidbiosensor900-RNPG/GCE.Electrochemicalimpedancespectroscopy(EIS),cyclicvoltammetry(CV)andchronoamperometry(it)wereusedtostudytheelectrochemicalperformanceofthelactatesensor.Atitsbest,thelinearrangeofthesensorforlacticacidis100μmol/Lto7mmol/L,withadetectionlimitof33.4μmol/L.Ithasahighresponsecurrentvalue,awidelinearrange,alowdetectionlimit,andstronganti-interferenceability,whichcanbeeffectivelyappliedtothedetectionoflacticacidcontent.Keywords:Nitrogenandphosphorusc...