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04-05-2018 | Composites | Issue 15/2018

Journal of Materials Science 15/2018

A nonenzymatic electrochemical H2O2 sensor based on macroporous carbon/polymer foam/PtNPs electrode

Journal:
Journal of Materials Science > Issue 15/2018
Authors:
Linyu Wang, Mengli Xu, Yi Xie, Yonghai Song, Li Wang
Important notes

Electronic supplementary material

The online version of this article (https://​doi.​org/​10.​1007/​s10853-018-2386-1) contains supplementary material, which is available to authorized users.

Abstract

Herein, a nonenzymatic electrochemical H2O2 sensor was developed based on Pt nanoparticles (PtNPs)/Schiff base foam (SBF)/three-dimensional macroporous kenaf stem-derived carbon (TMKSDC). The SBF composed of thin SB layers with single atomic thickness was firstly grown on TMKSDC as a supporting matrix via hydrazine anhydrous–terephthalaldehyde amino-aldehyde condensation reaction. Subsequently, lots of electroactive nanosized PtNPs were electrodeposited on SBF/TMKSDC to form PtNPs/SBF/TMKSDC integrated electrode. The surface morphology and pore feature of PtNPs/SBF/TMKSDC integrated electrode were explored by scanning electron microscopy, transmission electron microscopy, powder X-ray diffraction, Fourier transform infrared spectroscopy, atomic force microscope and N2 adsorption/desorption isotherms. Cyclic voltammetry and chronopotentiogram methods were used to study the electrochemical properties of PtNPs/SBF/TMKSDC integrated electrode for H2O2 sensing. Results showed that the nonenzymatic electrochemical H2O2 sensor based on PtNPs/SBF/TMKSDC integrated electrode had a good performance. The detection limit was about 0.022 μM, and the linear range was 0.065 μM–0.45 mM with a sensitivity of 760 μA mM−1 cm−2 and 0.45–1.775 mM with a sensitivity of 610 μA mM−1 cm−2. The good performances originated from the hierarchically porous structures, the large specific surface of PtNPs/SBF/TMKSDC and the super catalytic activity and distribution of nanosized PtNPs. It was noteworthy that the PtNPs/SBF/TMKSDC integrated electrode might also be applied in other fields.

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Supplementary Material
Supplementary material 1 (DOC 3315 kb)
10853_2018_2386_MOESM1_ESM.doc
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