Polyoxotungstate/Oxy-Graphene Nanocomposite Multilayer Films For Electrocatalytic Hydrogen Evolution

Year 2018, Volume: 5 Issue: 3, 1169 - 1176, 01.09.2018

Yasemin Torlak

https://doi.org/10.18596/jotcsa.420009

Cited By: 5

Abstract

In this study, nanocomposites were formed together with
Keggin-type K_7-xNa_xPW₁₁O₃₉∙14H₂O
(POTs) clusters
and oxygenated-graphene (Oxy-G). It was produced as a multilayer by
layer-by-layer self-assembly method using protonated poly (ethylenimine) (PEI).
The produced (PEI / POTs / Oxy-G) n multilayer films were controlled by XRD,
cyclic voltammetry and UV-visible spectroscopy. (PEI / POTs / Oxy-G) n
multilayers modified on a glassy carbon electrode and the hydrogen evolution
reaction taking advantage of the electrocatalytic activity of this
nanocomposite. Multilayer has been shown to exhibit a potentially good
electrocatalytic activity at -0.4 V. A notable electrocatalytic hydrogen
evolution reaction could be identified on the (PEI/ POTs/Oxy-G)_n multilayer.
We demonstrate that expanded the application of POTs/G nanocomposites to the
electrocatalysis of oxygen reduction reaction and hydrogen evolution reaction.
This excellent approach will offer new insights into different electrode structure
and the development of novel electroactive catalysts.

Keywords

polyoxotungstate , multilayer graphene films , hydrogen evolution

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