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

被引：7

作者：

Ali, Bushra ^{[1
]}

McCormac, Timothy ^{[6
]}

Lepleux, Emmanuel ^{[4
]}

Pacheco, Louis ^{[4
]}

Laffir, Fathima ^{[5
]}

Maccato, Chiara ^{[2
,3
]}

机构：

[1] Dundalk Inst Technol, Dept Appl Sci, Electrochem Res Grp, Dublin Rd, Dundalk, County Louth, Ireland

[2] Padova Univ, Dept Chem, I-35131 Padua, Italy

[3] INSTM, I-35131 Padua, Italy

[4] Concept Sci Instruments, Les Ulis, France

[5] Univ Limerick, Bernal Inst, Limerick, Ireland

[6] Dundalk Inst Technol, Res, Dundalk, Ireland

来源：

ELECTROCHIMICA ACTA | 2020年 / 343卷

关键词：

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

D O I：

10.1016/j.electacta.2020.135987

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Graphene oxide-based nanocomposite multilayer films with polyethylene imine (PEI) and H-4[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. (C) 2020 Elsevier Ltd. All rights reserved.

引用

页数：12

共 47 条

[1] Electrochemical, surface and electrocatalytic properties of electrode multilayer assemblies composed of a ruthenium metallodendrimer and a wheel-shaped Cu-20 Tungstophosphate [J].