Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
6661507 | Journal of Electroanalytical Chemistry | 2018 | 8 Pages |
Abstract
A variety of nitro aromatic compounds in natural water have become the serious pollution problem which attracted extensive attention in the field of environmental protection. Herein, a new nanohybrid was successfully prepared by facile chemical deposition of Cu nanospheres (CuNSs) on SH-β-CD functionalized reduced graphene oxide (SH-β-CD-RGO). The as synthesized SH-β-CD-RGO/CuNSs nanocomposite was characterized by UV-vis spectroscopy, Fourier transform Infrared (FT-IR) spectroscopy, transmission electron microscopy (TEM), and cyclic voltammetry (CV). The new material possesses the advantages of RGO (large surface area and high conductivity), SH-β-CD (high supramolecular recognition and enriching ability) and CuNSs (large surface area and electrocatalysis) and exhibits enhanced electrochemical properties for 4-nitrophenol (4-NP) reduction. On this basis, a rapid and sensitive electrochemical method for the determination of trace 4-NP in water was established, which benefits from the synergetic effect of RGO, SH-β-CD and CuNSs. The constructed electrochemical 4-NP sensor based on SH-β-CD-RGO/CuNSs demonstrates speediness, good sensitivity, wide linear range (0.05-25â¯Î¼M and 25-100â¯Î¼M) and low limit of detection (20â¯nM). Furthermore, it has acceptable selectivity and feasibility for real water sample analysis. The proposed method is not only simple, practical and cost-effective, but also open up a new possibility for rapid field tests of trace amounts of 4-NP in environmental water samples.
Keywords
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Chemical Engineering (General)
Authors
Zhiguang Liu, Yujing Guo,