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Electrochemical detection and degradation of ibuprofen from water on multi-walled carbon nanotubes-epoxy composite electrode

查看全文 作　　者：Sorina [1]Motoc;Adriana [1]Remes;Aniela [1]Pop;Florica [1]Manea;Joop [2]Schoonman 高影响力作者 机构地区：[1]Politehnica University of Timisoara,P-ta Victoriei No.2,300006 Timisoara,Romania;[2]Materials for Energy Conversion and Storage,Department of Chemical Engineering,Delft University of Technology,Julianalaan 136,2626 BL,Delft,The Netherlands高影响力机构 出　　处：《Journal of Environmental Sciences》索引2013年第25卷第4期,共10页高影响力期刊 基　　金：supported by the strategic grant POSDRU/88/1.5/S/50783;POSDRU/21/1.5/G/13798;POSDRU/89/1.5/S/57649 co-financed by the European Social Fund - Investing in People,within the Sectoral Operational Programme Human Resources Development 2007-2013;partially by the PN II-RU-PD129/2010 and PN II Ideas 165/2011 摘　　要：This work describes the electrochemical behaviour of ibuprofen on two types of multi-walled carbon nanotubes based composite electrodes,i.e.,multi-walled carbon nanotubes-epoxy(MWCNT) and silver-modified zeolite-multi-walled carbon nanotubes-epoxy(AgZMWCNT) composites electrodes.The composite electrodes were obtained using two-roll mill procedure.SEM images of surfaces of the composites revealed a homogeneous distribution of the composite components within the epoxy matrix.AgZMWCNT composite electrode exhibited the better electrical conductivity and larger electroactive surface area.The electrochemical determination of ibuprofen(IBP) was achieved using AgZMWCNT by cyclic voltammetry,differential-pulsed voltammetry,square-wave voltammetry and chronoamperometry.The IBP degradation occurred on both composite electrodes under controlled electrolysis at 1.2 and 1.75 V vs.Ag/AgCl,and IBP concentration was determined comparatively by differential-pulsed voltammetry,under optimized conditions using AgZMWCNT electrode and UV-Vis spectrophotometry methods to determine the IBP degradation performance for each electrode.AgZMWCNT electrode exhibited a dual character allowing a double application in IBP degradation process and its control. 关 键 词：multi-walled carbon nanotubes composite electrodes electrochemical oxidation electrochemical detection IBUPROFEN
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