Anodic Fabrication of Nanoporous Gold Films from Pure Gold in Oxalic Acid Solution and Their Applications in Electrocatalysis and SERS

A novel catalyst for water splitting has been prepared by Linear Sweep Voltammetry (LSV) deposition of amorphous MoS 2 on nanoporous gold (NPG) obtained by electrochemical de-alloying a metallic glass precursor, Au 40 Cu 28 Ag 7 Pd 5 Si 20 (at.%). As a function of number of CV cycles, Au ligaments are progressively encapsulated by a thin layer of amorphous MoS 2 catalyst for hydrogen evolution. NPG provides a good substrate for deposition having excellent properties of handability and mechanical resistance in addition to catalytic activity, high conductivity and high surface area. By controlling the number of cycles in LSV low onset potential, low Tafel slope and interesting values of exchange current density were obtained. The synergistic behaviour of the multicomponent material provides an highly efficient catalyst for hydrogen making of these samples a good candidate in some instances comparable to the conventional Pt catalyst for hydrogen evolution in acidic environment.

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Amorphous molybdenum sulphide @ nanoporous gold as catalyst for hydrogen evolution reaction in acidic environment

Scaglione

Xue

Celegato

et al. 2018

J Mater Sci

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Ultra-rapid fabrication of highly surface-roughened nanoporous gold film from AuSn alloy with improved performance for nonenzymatic glucose sensing

Pei

et al. 2018

Biosensors and Bioelectronics

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Gold nanoparticles/electrochemically expanded graphite composite: A bifunctional platform toward glucose sensing and SERS applications

Xiang

Feng

Chen

et al. 2019

Journal of Electroanalytical Chemistry

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Anodic Fabrication of Nanoporous Gold Films from Pure Gold in Oxalic Acid Solution and Their Applications in Electrocatalysis and SERS

Cited by 10 publications

References 19 publications

Amorphous molybdenum sulphide @ nanoporous gold as catalyst for hydrogen evolution reaction in acidic environment

Amorphous molybdenum sulphide @ nanoporous gold as catalyst for hydrogen evolution reaction in acidic environment

Ultra-rapid fabrication of highly surface-roughened nanoporous gold film from AuSn alloy with improved performance for nonenzymatic glucose sensing

Gold nanoparticles/electrochemically expanded graphite composite: A bifunctional platform toward glucose sensing and SERS applications

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