Fluorine tin oxide-supported copper nanofilms as effective and selective de-nitration electrocatalysts
Publication Type
Original research
Authors

Due to widespread water pollution with nitrate ion, methods to remove or lower the nitrate concentrations in water are needed. A novel route to reproducibly electrodeposit copper nano-films, from acidic media onto fluorine-doped tin oxide/glass ([email protected]) is described. The films involve elemental copper nanoparticles inside copper agglomerates of larger sizes.  Within 2 h, at ambient potential (-1.8 V), the [email protected] electrode reduces aqueous nitrate ions (~40%) more effectively than the benchmark bare Cu metal sheet (~11%). The [email protected] is also more selective to N 2 production (~30%) compared to bare Cu sheet with only (~1.1%). Furthermore, the [email protected] effectively functions for 7 h and continues to bring down the nitrate ion concentration from 200 ppm to acceptable levels (less than 60 ppm), reproducibly in 5 attempts. The results are promising for future water de-nitration processes using easyto-prepare [email protected] electrodes, aiming at producing electrodes for continuous flow reactors at larger scale.

Journal
Title
Journal of Electroanalytical Chemistry
Publisher
Elsevier
Publisher Country
Netherlands
Indexing
Scopus
Impact Factor
4.464
Publication Type
Prtinted only
Volume
911
Year
2022
Pages
16