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Improved N2 photo-fixation performance of nanocrystalline TiO2 films by photon localization effects and Fe doping.
- Source :
- New Journal of Chemistry; 4/14/2024, Vol. 48 Issue 14, p6494-6504, 11p
- Publication Year :
- 2024
-
Abstract
- The development of clean and sustainable nitrogen-fixing methods has always attracted significant attention for decades. In this work, we investigated a strategy to enhance the N<subscript>2</subscript> photo-fixation performance of titanium dioxide (TiO<subscript>2</subscript>) films by leveraging the synergistic effect between photon localization effects and iron (Fe) doping. Introducing Fe ions into TiO<subscript>2</subscript> broadens its light absorption spectrum, making it extend into the visible light range, while improving charge separation capabilities. Our findings revealed that the photocatalytic ammonia generation of Fe-doped TiO<subscript>2</subscript> (FT) catalysts, with a Fe<superscript>3+</superscript> concentration of 6%, could reach up to 1.5 times that of pure TiO<subscript>2</subscript>. Besides, the photon localization effect of the SiO<subscript>2</subscript> opal photonic crystals (SOPC) could enhance the light harvesting efficiency of the photocatalysts. By coupling the SOPC layer and nanocrystalline FT films, the N<subscript>2</subscript> photo-fixation performance of FT/SOPC composite membranes was further promoted to 55.6 mmol g<superscript>-1</superscript> h<superscript>-1</superscript>. This study offered a promising route for nitrogen fixation using solar energy. [ABSTRACT FROM AUTHOR]
- Subjects :
- PHOTONS
NITROGEN
NITROGEN fixation
VISIBLE spectra
COMPOSITE membranes (Chemistry)
Subjects
Details
- Language :
- English
- ISSN :
- 11440546
- Volume :
- 48
- Issue :
- 14
- Database :
- Complementary Index
- Journal :
- New Journal of Chemistry
- Publication Type :
- Academic Journal
- Accession number :
- 176523711
- Full Text :
- https://doi.org/10.1039/d3nj05332f