PdAg-decorated three-dimensional reduced graphene oxide-multi-walled carbon nanotube hierarchical nanostructures for high-performance hydrogen peroxide sensing


High-performance electrochemical hydrogen peroxide (H2O2) sensors based on PdAg nanoparticle-decorated reduced graphene oxide (rGO) and multi-walled carbon nanotube (MWCNT) hybrids were developed. The nanostructures were characterized using transmission electron microscopy, scanning electron microscopy, energy-dispersive spectroscopy, thermogravimetric analysis, Fourier transform spectroscopy, and x-ray diffraction techniques. It was found that introduction of MWCNT in the catalyst layer improved the sensitivity and widened the linear range. Sensitivities of 393.2, 437.1, and 576.6 μA/mM/cm2 were obtained for PdAg/rGO-MWCNT (2:1), PdAg/rGO-MWCNT (1:1), and PdAg/rGO-MWCNT (1:2), respectively. Furthermore, hierarchical structure of rGO-MWCNT nanohybrids enabled the detection of H2O2 up to 80 mM.

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The authors acknowledge Hitit University Research Department for the financial support (FEF190001.17.008). The authors also thank Ahmet Burcin Batibay for his valuable contributions.

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Correspondence to Aytekin Uzunoglu.


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The authors declare no conflict of interest.

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The supplementary material for this article can be found at {rs|https://doi.org/10.1557/mrc.2018.82|url|}

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Uzunoglu, A., Kose, D.A., Kose, K. et al. PdAg-decorated three-dimensional reduced graphene oxide-multi-walled carbon nanotube hierarchical nanostructures for high-performance hydrogen peroxide sensing. MRS Communications 8, 680–686 (2018). https://doi.org/10.1557/mrc.2018.82

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