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All Journal Bulletin of Chemical Reaction Engineering & Catalysis
Rahma, Resha Mutia
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Chemical Engineering, Chemistry & Bioengineering Chemistry

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Structure-Dependent Performance of N-Doped TiO2 Nanowires toward Efficient Solar-Driven Hydrogen Production Attalario, Evan; Rahma, Resha Mutia; Kusumawati, Yuly; Ivansyah, Atthar Luqman; Putri, Yulia Eka; Wellia, Diana Vanda
Bulletin of Chemical Reaction Engineering & Catalysis 2026: BCREC Volume 21 Issue 2 Year 2026 (August 2026)
Publisher : Masyarakat Katalis Indonesia - Indonesian Catalyst Society (MKICS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.9767/bcrec.20606

Abstract

This research focuses on enhancing hydrogen production via the photocatalytic method using a TiO2 catalyst with nitrogen doping and morphology modification to improve efficiency. Nitrogen-doped TiO2 nanowires (NTN) were successfully hydrothermally grown on titanium foil to produce thin-film photocatalysts for the visible-light-driven production of hydrogen. Nitrogen incorporation induced bandgap narrowing, from 3.18 eV to 2.85 eV, by introducing N 2p states close to the valence band, thereby increasing visible-light absorption. Structural analyses confirmed the formation of lattice strain and oxygen vacancies associated with substitutional doping, while the one-dimensional nanowire architecture enhanced charge transport and reduced carrier recombination pathways. The optimized N–TiO2 NWs demonstrated the highest hydrogen evolution rate of 2.385 µmol/cm2 under 180 minutes of visible-light irradiation, corresponding to a hydrogen evolution rate of 0.795 µmol/cm²/h, without a noble-metal co-catalyst. A strong correlation is established between nitrogen-induced surface electronic modification and the enhancement of nanowire-driven charge separation. This study presents a recyclable and scalable thin-film photocatalyst design suitable for future solar hydrogen production systems. Copyright © 2026 by Authors, Published by BCREC Publishing Group. This is an open access article under the CC BY-SA License (https://creativecommons.org/licenses/by-sa/4.0).
Co-Authors Attalario, Evan Atthar Luqman Ivansyah Kusumawati, Yuly Wellia, Diana Vanda Yulia Eka Putri, Yulia Eka