Non-enzymatic electrochemical hydrogen peroxide sensing using a nanocomposite prepared from silver nanoparticles and copper (II)-porphyrin derived metal-organic framework nanosheets
- 167 Downloads
A non-enzymatic hydrogen peroxide (H2O2) electrochemical sensor material was prepared from silver nanoparticles and a 2D copper-porphyrin framework (MOF). The structure and morphology of the nanocomposite were characterized by scanning electron microscopy, transmission electron microscopy, X-ray diffraction, X-ray photoelectron spectroscopy and Fourier transform infrared spectroscopy. The results showed that the MOF has a two-dimensional sheet structure, and a large number of Ag NPs are uniformly attached to it. The MOF also acts as a peroxidase mimic. The sensor has excellent catalytic performance in terms of H2O2 reduction. Figures of merit include (a) an electrochemical sensitivity of 21.6 μA mM−1 cm−2 at a typical working potential of −0.25 V (vs. SCE), (b) a detection limit of 1.2 μM (at S/N = 3), and (c) a linear response range that extends from 3.7 μM to 5.8 mM. Compared to other sensors of the same type, the linear range of the sensor is extended by an order of magnitude.
KeywordsSurfactant-assisted synthetic method Hydrogen peroxide sensor Peroxidase mimic Metal organic framework Porphyrin Silver nanoparticles
The authors gratefully acknowledge the financial support of this project by the National Science Foundation of China (No. 21575113), the Natural Science Foundation of Shaanxi Province in China (No. 2017JM2036, 2018JQ2029), and the Fostering Foundation of Northwest University for the Excellent Ph.D. Dissertation (No. YYB17012), and Northwest University Graduate Innovation and Creativity Funds (No.YZZ17125).
Compliance with ethical standards
The author(s) declare that they have no competing interests.
- 5.Zhang M, Feng GX, Song ZG, Zhou YP, Chao HY, Yuan D, Tan TTY, Guo Z, Hu Z, Tang BZ, Liu B, Zhao D (2014) Two-dimensional metal–organic framework with wide channels and responsive turn-on fluorescence for the chemical sensing of volatile organic compounds. J Am Chem Soc 136:7241–7244CrossRefGoogle Scholar
- 12.Huang Y, Zhao MT, Han SK, Lai Z, Yang J, Tan C, Ma Q, Lu Q, Chen J, Zhang X, Zhang Z, Li B, Chen B, Zong Y, Zhang H (2017) Growth of au nanoparticles on 2D Metalloporphyrinic metal-organic framework Nanosheets used as biomimetic catalysts for Cascade reactions. Adv Mater 29:1700102CrossRefGoogle Scholar
- 32.Liu S, Tian JQ, Wang L, Li HL, Zhang YW, Sun XP (2010) Stable aqueous dispersion of graphene Nanosheets: noncovalent functionalization by a polymeric reducing agent and their subsequent decoration with ag nanoparticles for Enzymeless hydrogen peroxide detection. Macromolecules 43:10078–10083CrossRefGoogle Scholar