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Specific Electrocatalytic Oxidation of Cellulose at Carbon Electrodes Modified by Gold Nanoparticles
Author(s) -
Sugano Yasuhito,
Kumar Narendra,
Peurla Markus,
Roine Jorma,
Aho Atte,
Bobacka Johan,
Mikkola JyriPekka
Publication year - 2016
Publication title -
chemcatchem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.497
H-Index - 106
eISSN - 1867-3899
pISSN - 1867-3880
DOI - 10.1002/cctc.201600190
Subject(s) - cyclic voltammetry , x ray photoelectron spectroscopy , dielectric spectroscopy , electrode , electrochemistry , materials science , cellulose , colloidal gold , inorganic chemistry , carbon fibers , electrocatalyst , voltammetry , oxidation state , crystallite , nanoparticle , chemical engineering , metal , chemistry , nanotechnology , organic chemistry , metallurgy , composite material , composite number , engineering
The influence of the size and oxidation state of Au nanoparticles (AuNPs) as electrocatalysts for the electro‐oxidation of cellulose was studied. Carbon paper electrodes modified with AuNPs were used as the electrocatalysts for the electro‐oxidation of cellulose dissolved in 1.3 m NaOH. The size and oxidation state of the AuNPs were determined by using SEM, TEM, and X‐ray photoelectron spectroscopy. Both the size and the oxidation state of the AuNPs were found to influence the electrocatalytic properties of the electrode, as studied by using cyclic voltammetry, square wave voltammetry, and electrochemical impedance spectroscopy. The carbon paper electrodes decorated with AuNPs (less than 25 nm) that consist of metallic Au gave rise to a significantly higher electrocatalytic activity than a bare polycrystalline Au electrode.