Layer-by-layer assembly of graphene oxide and 12-molybdosilicate composite films for the electrocatalytic reduction of chloroform in neutral aqueous solution

Bushra Ali; Timothy McCormac; Emmanuel Lepleux; Louis Pacheco; Fathima Laffir; Chiara Maccato

doi:10.1016/j.electacta.2020.135987

Layer-by-layer assembly of graphene oxide and 12-molybdosilicate composite films for the electrocatalytic reduction of chloroform in neutral aqueous solution

Bushra Ali, Timothy McCormac, Emmanuel Lepleux, Louis Pacheco, Fathima Laffir, Chiara Maccato

Research output: Contribution to journal › Article › peer-review

Abstract

Graphene oxide-based nanocomposite multilayer films with polyethylene imine (PEI) and H₄[SiMo₁₂O₄₀]^4- POM interface have been investigated for their electrocatalytic reduction of chloroform in water. Resulting thin films were characterized by both electrochemical and surface based techniques. Cyclic voltammetry was employed to show the layer growth and redox behaviour of the modified electrode system with redox chemistry of the incorporated POM being present. AC impedance gave insights into the porosity and conductivity of the constructed multilayer POM system. Surface characterisation by XPS, AFM and SEM of the modified electrode was also performed to gain insights into the surface morphology and elemental composition of the modified electrode. The constructed multilayer system exhibited an electrocatalytic response to chloroform in water.

Original language	English
Article number	135987
Journal	Electrochimica Acta
Volume	343
DOIs	https://doi.org/10.1016/j.electacta.2020.135987
Publication status	Published - 20 May 2020

Keywords

Concept scientific atomic force microscopy
CS-AFM
GO
Graphene oxide
Layer-by-Layer
LBL
Polyoxometalates
POM
X-ray photoelectron spectroscopy
XPS

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10.1016/j.electacta.2020.135987

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title = "Layer-by-layer assembly of graphene oxide and 12-molybdosilicate composite films for the electrocatalytic reduction of chloroform in neutral aqueous solution",

abstract = "Graphene oxide-based nanocomposite multilayer films with polyethylene imine (PEI) and H4[SiMo12O40]4- POM interface have been investigated for their electrocatalytic reduction of chloroform in water. Resulting thin films were characterized by both electrochemical and surface based techniques. Cyclic voltammetry was employed to show the layer growth and redox behaviour of the modified electrode system with redox chemistry of the incorporated POM being present. AC impedance gave insights into the porosity and conductivity of the constructed multilayer POM system. Surface characterisation by XPS, AFM and SEM of the modified electrode was also performed to gain insights into the surface morphology and elemental composition of the modified electrode. The constructed multilayer system exhibited an electrocatalytic response to chloroform in water.",

keywords = "Concept scientific atomic force microscopy, CS-AFM, GO, Graphene oxide, Layer-by-Layer, LBL, Polyoxometalates, POM, X-ray photoelectron spectroscopy, XPS",

author = "Bushra Ali and Timothy McCormac and Emmanuel Lepleux and Louis Pacheco and Fathima Laffir and Chiara Maccato",

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AU - Ali, Bushra

AU - McCormac, Timothy

AU - Lepleux, Emmanuel

AU - Pacheco, Louis

AU - Laffir, Fathima

AU - Maccato, Chiara

PY - 2020/5/20

Y1 - 2020/5/20

N2 - Graphene oxide-based nanocomposite multilayer films with polyethylene imine (PEI) and H4[SiMo12O40]4- POM interface have been investigated for their electrocatalytic reduction of chloroform in water. Resulting thin films were characterized by both electrochemical and surface based techniques. Cyclic voltammetry was employed to show the layer growth and redox behaviour of the modified electrode system with redox chemistry of the incorporated POM being present. AC impedance gave insights into the porosity and conductivity of the constructed multilayer POM system. Surface characterisation by XPS, AFM and SEM of the modified electrode was also performed to gain insights into the surface morphology and elemental composition of the modified electrode. The constructed multilayer system exhibited an electrocatalytic response to chloroform in water.

AB - Graphene oxide-based nanocomposite multilayer films with polyethylene imine (PEI) and H4[SiMo12O40]4- POM interface have been investigated for their electrocatalytic reduction of chloroform in water. Resulting thin films were characterized by both electrochemical and surface based techniques. Cyclic voltammetry was employed to show the layer growth and redox behaviour of the modified electrode system with redox chemistry of the incorporated POM being present. AC impedance gave insights into the porosity and conductivity of the constructed multilayer POM system. Surface characterisation by XPS, AFM and SEM of the modified electrode was also performed to gain insights into the surface morphology and elemental composition of the modified electrode. The constructed multilayer system exhibited an electrocatalytic response to chloroform in water.

KW - Concept scientific atomic force microscopy

KW - CS-AFM

KW - GO

KW - Graphene oxide

KW - Layer-by-Layer

KW - LBL

KW - Polyoxometalates

KW - POM

KW - X-ray photoelectron spectroscopy

KW - XPS

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DO - 10.1016/j.electacta.2020.135987

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SN - 0013-4686

VL - 343

JO - Electrochimica Acta

JF - Electrochimica Acta

M1 - 135987

ER -

Layer-by-layer assembly of graphene oxide and 12-molybdosilicate composite films for the electrocatalytic reduction of chloroform in neutral aqueous solution

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Keywords

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