Affiliation:
1. Department of Chemistry Federal University of São Carlos—UFSCar – Rod. Washington Luiz, Km 235 13565-905 São Carlos Brazil
2. Alternative Technologies of Detection, Toxicological Evaluation and Removal of Micropollutants and Radioactives (INCT-DATREM) Institute of Chemistry Universidade Estadual Paulista (UNESP) 14800-900 Araraquara Brazil
Abstract
AbstractThere is a crescent need to improve well‐known processes to environmentally friendly options, and NH3 production is not an exception. Herein, we describe the photoelectrochemical nitrogen reduction reaction under a carbon nitride, the poly(heptazine imide) (PHI) using mild conditions for NH3 synthesis. For this purpose, PHI was combined with Nb2O5 nanotubes, leading to a new photocathode with a charge transfer process in a Z‐scheme structure. The photoelectrocatalytic N2 reduction was carried out in Nb2O5Nt/PHI using solar‐simulated radiation and with an applied bias of −0.3 VAg/AgCl. The PHI presence in the photocathode showed not only superior stability compared to bare Nb2O5, but also an ammonia generation rate of 0.156 mmol L−1 h−1 cm−2, which is about 10‐fold higher than the amount obtained with niobium oxide alone. The mild and green conditions employed for ammonia generation place the obtained photocathode as a promising option for the currently used Haber‐Bosch process.
Subject
Inorganic Chemistry,Organic Chemistry,Physical and Theoretical Chemistry,Catalysis
Cited by
3 articles.
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