A novel modified carbon paste electrode (CD/SBA-15/CPE) with β-CD-functionalized SBA-15 mesoporous silica ( CD/SBA-l5) were fabricated and characterized. The recognition mechanism of nitrophe-nol, chloronitrobenzene and dihydroxybenzene isomers were studied at the modified electrode using cyclic vol-tammetry(CV) and differential pulse voltammetries ( DPV). The experiment results indicated that o-, m-, p-Nitrophenol, o-, p-Chloronitrobenzene and o-, p-Dihydroxybenzene isomers could be identified entirely at the CD/SBA-15/CPE, respectively. The detection sensivity of CD/SBA-15/CPE were increased resulting from the unique structure and chemical properties of SBA-15, the anodic or cathodic peak resolution of the isomers electrochemical reaction products was increased resulting from the superamolecular recognition of β-CD. The modified electrode might be applied in the practical field.%合成了SBA-15有序多孔氧化硅材料并用β-环糊精(β-CD)对其进行了修饰,制备了功能化介孔修饰的碳糊电极(CD-SBA15/CPE),利用循环伏安法(CV)、示差脉冲伏安法(DPV)等研究了该修饰电极对硝基苯酚、硝基氯苯及苯二酚异构体的识别机理.研究表明,该修饰电极能识别o-,m-,P-硝基苯酚、o-,p-硝基氯苯和o-,p-苯二酚异构体,且具有较高的分辨率和灵敏度.
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