In:
Green Chemistry, Royal Society of Chemistry (RSC), Vol. 24, No. 20 ( 2022), p. 7913-7917
Abstract:
Electrochemical nitrate (NO 3 − ) reduction is an appealing approach to remove NO 3 − contaminants and simultaneously convert them into high value-added ammonia (NH 3 ), but it requires highly active catalysts with high selectivity. Herein, Fe doping is proposed as an effective strategy to greatly enhance the electrocatalytic NO 3 − -to-NH 3 conversion over a TiO 2 nanoribbon array supported on a Ti plate. Such an Fe–TiO 2 /TP catalyst achieves a large NH 3 yield of up to 940.17 μmol h −1 cm −2 and a high NH 3 faradaic efficiency of 95.93% under alkaline conditions, superior to those of its undoped TiO 2 /TP counterpart (57.47 μmol cm −2 h −1 , 35.77%). Moreover, it also shows excellent electrochemical and structural stability. Theoretical calculations reveal that Fe doping can dramatically improve the electronic conductivity of TiO 2 and optimize the adsorption of reactive species on its surface.
Type of Medium:
Online Resource
ISSN:
1463-9262
,
1463-9270
Language:
English
Publisher:
Royal Society of Chemistry (RSC)
Publication Date:
2022
detail.hit.zdb_id:
1485110-6
detail.hit.zdb_id:
2006274-6
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