Electrocatalytic oxidation of cellulose at a gold electrode

A1 Originalartikel i en vetenskaplig tidskrift (referentgranskad)


Interna författare/redaktörer


Publikationens författare: Yasuhito Sugano, Rose-Marie Latonen, Marceline Akieh-Pirkanniemi, Johan Bobacka, Ari Ivaska
Förläggare: Wiley-VCH Verlag GmbH&Co. KGaA
Förlagsort: Weinheim
Publiceringsår: 2014
Tidskrift: ChemSusChem
Volym: 7
Nummer: 8
Artikelns första sida, sidnummer: 2240
Artikelns sista sida, sidnummer: 2247
eISSN: 1864-564X


Abstrakt

The electrochemical properties of cellulose dissolved in NaOH solution at a Au surface were investigated by cyclic voltammetry, FTIR spectroscopy, the electrochemical quartz crystal microbalance technique, and electrical impedance spectroscopy. The reaction products were characterized by SEM, TEM, and FTIR and NMR spectroscopy. The results imply that cellulose is irreversibly oxidized. Adsorption and desorption of hydroxide ions at the Au surface during the potential cycling have an important catalytic role in the reaction (e.g., approach of cellulose to the electrode surface, electron transfer, adsorption/desorption of the reaction species at the electrode surface). Moreover, it was found that two types of cellulose derivatives were obtained as products. One is a water-soluble cellulose derivative in which some hydroxyl groups are oxidized to carboxylic groups. The other derivative is a water-insoluble hybrid material composed of cellulose and Au nanoparticles (4^^nm). Furthermore, a reaction scheme of the electrocatalytic oxidation of cellulose at a gold electrode in a basic medium is proposed.


Nyckelord

Biomass, Electrochemistry, Ethanol Oxidation, Gold, Nanoparticle

Senast uppdaterad 2019-11-12 vid 01:43