标题：Simultaneous Determination of Nitrophenol Isomers Based on β-Cyclodextrin Functionalized Reduced Graphene Oxide
作者：Liu, Z.;Ma, X.;Zhang, H.;Lu, W.;Ma, H.;Hou, S.
作者机构：[Liu, Z] Key Laboratory for Colloid and Interface Chemistry of State Education Ministry, School of Chemistry and Chemical Engineering, Shandong Univer 更多
通讯作者地址：[Ma, HY]Shandong Univ, State Educ Minist, Key Lab Colloid & Interface Chem, Sch Chem & Chem Engn, Jinan 250100, Peoples R China.
关键词：Cyclic voltammograms (CVs);Cyclodextrin (CD);Nitrophenol isomers (NPs);Reduced graphene oxide (RGO);Selective detection.
摘要：β-CD modified reduced graphene oxide (RGO) sheets have been prepared and characterized by TEM, AFM, IR, EIS and CVs. In comparison with bare glass carbon electrode (GCE) and RGO modified GCE, CD-RGO/GCE showed much higher peak currents to the reduction of nitrophenol isomers (NPs), attributed to the larger specific surface area of RGO and high quantities of host-guest recognition sites. Three pairs of redox peaks are observed on the CVs of CD-RGO for p-NP (0.3V), o-NP (-0.2V) and m-NP (0.05V), separating well with each other. Under the optimized condition, the anodic peak currents were linear over ranges around 1-10mgdm ~(-3) for p-NP, 1-9mgdm ~(-3) for o-NP and 1-6mgdm ~(-3) for m-NP, with the detection limits of 0.05mgdm ~(-3), 0.02mgdm ~(-3) and 0.1mgdm ~(-3), respectively. Thus, the CD-RGO is expected to be a promising sensor material for detecting trace NPs in waste water.