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Electrocatalytic Conversion of Carbon Dioxide and Nitrate Ions to Urea by a Titania–Nafion Composite Electrode
Author(s) -
Saravanakumar Duraisamy,
Song Jieun,
Lee Sunhye,
Hur Nam Hwi,
Shin Woonsup
Publication year - 2017
Publication title -
chemsuschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.412
H-Index - 157
eISSN - 1864-564X
pISSN - 1864-5631
DOI - 10.1002/cssc.201701448
Subject(s) - nafion , inorganic chemistry , electrode , tin dioxide , urea , faraday efficiency , materials science , composite number , nanocomposite , electrochemistry , chemistry , chemical engineering , nanotechnology , composite material , organic chemistry , metallurgy , engineering
CO 2 and nitrate ions were successfully converted to urea by a TiO 2 –Nafion nanocomposite electrode under ambient conditions. The composite electrode was constructed by dropcasting the mixture of P25 titania and Nafion solution on an indium‐doped tin oxide (ITO) electrode. When the electrode was electrolyzed in CO 2 ‐saturated 0.1 m KNO 3 (pH 4.5) solution at −0.98 V versus Ag/AgCl, urea was formed with a Faradaic efficiency of 40 %. The other reduced products obtained were NH 3 , CO, and H 2 .