Synthesis of a functionalized multi-walled carbon nanotube decorated ruskin michelle-like ZnO nanocomposite and its application in the development of a highly sensitive hydroquinone sensor

被引:29
作者
Balram, Deepak [1 ]
Lian, Kuang-Yow [1 ]
Sebastian, Neethu [2 ]
机构
[1] Natl Taipei Univ Technol, Dept Elect Engn, 1,Sect 3,Chung Hsiao East Rd, Taipei 106, Taiwan
[2] Natl Taipei Univ Technol, Inst Organ & Polymer Mat, 1,Sect 3,Chung Hsiao East Rd, Taipei 106, Taiwan
关键词
SIMULTANEOUS ELECTROCHEMICAL DETERMINATION; ZINC-OXIDE; MODIFIED ELECTRODE; GRAPHENE OXIDE; GAS-SENSOR; BISPHENOL-A; THIN-FILMS; CATECHOL; NANOPARTICLES; COMPOSITES;
D O I
10.1039/c8qi00440d
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
In this paper, a novel electrochemical sensor based on a functionalized multi-walled carbon nanotube (f-MWCNT) decorated ruskin michelle-like zinc oxide (ZnO) nanocomposite for the determination of the environmental pollutant hydroquinone (HQ) is reported. We have followed a new aqueous solution method for the synthesis of ruskin michelle-like ZnO nanoparticles and they are characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD), Raman spectroscopy, Fourier transform infrared (FT-IR) spectroscopy and UV visible spectroscopy. Cyclic voltammetry (CV), differential pulse voltammetry (DPV) and amperometric techniques are used for the electrochemical analysis of a f-MWCNT decorated ruskin michelle-like ZnO nanocomposite modified glassy carbon electrode (GCE). The fabricated f-MWCNT/ZnO GCE showcased excellent electrocatalytic activity in the determination of HQ and we obtained a sharp anodic and cathodic peak current at a low potential value of 0.11 V and 0.05 V, respectively. Efficient reproducibility and stability, anti-interference property and good repeatability, which are the traits of a good electrochemical sensor, are exhibited by the fabricated sensor. We have obtained a very low limit of detection (LOD) for the fabricated f-MWCNT/ZnO GCE of 0.02 M, a linear response in the range of 0.1-190 M and a sensitivity of 6.37 A M-1 cm(-2). These results obtained from the electrochemical analysis reveal the excellent performance of the f-MWCNT decorated ruskin michelle-like ZnO nanocomposite modified GCE in the effective determination of HQ.
引用
收藏
页码:1950 / 1961
页数:12
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