Enhanced photostability of cuprous oxide by lignin films on glassy carbon electrodes in the transformation of carbon dioxide. Issue 10 (26th April 2018)

• Record Type: Journal Article
• Authors: Landaeta, Esteban; Schultz, Zachary D.; Burgos, Ana; Schrebler, Ricardo; Isaacs, Mauricio
• Is Part Of: Green chemistry. Volume 20:Issue 10(2018)
• Page Start: 2356
• Page End: 2364
• Publication Date: 2018-04-26
• Subjects: Environmental chemistry -- Industrial applications -- Periodicals; Environmental management -- Periodicals; 660
• DOI: 10.1039/c8gc00365c
• Languages: English
• ISSNs: 1463-9262

Abstract

Abstract : Lignin is a residual product can be reused for stabilize Cu2 O on modified electrodes in CO2 reduction. Abstract : Photoelectrochemical reduction of CO2 was investigated on carbon electrodes modified with lignin and cuprous oxide. The electrodes were modified by electropolymerization of lignin and subsequent pulse electrodeposition of Cu2 O. Characterization of the electrodes was performed by SEM microscopy, Raman, IR-ATR and UV-visible spectroscopies, as well as electrochemical methods. Lignin films provide a micro-environment where Cu2 O is stabilized and also its reactivity is modified toward C–H–O containing compounds. The main products obtained from the reduction of CO2 are formaldehyde, methyl formate and ethyl acetate, as detected and quantified by nuclear magnetic resonance and UV-Vis spectroscopy. Our results demonstrate that lignin is a good material for the formation and support of the electrodeposited Cu2 O, where the Cu2 O enables the potential use of solar energy for the photoelectrochemical reduction of CO2 at low overpotentials.