articleJournal of the American Chemical SocietyMar 7, 2025Closed access

Ultrathin Ti-Deficient TiO 2 Nanosheets with Pt Single Atoms Enable Efficient Photocatalytic Nitrate Reduction to Ammonia

HJHayoon JungGCGihoon ChaHKHyesung KimJWJohannes WillXZXin Zhou

Friedrich-Alexander-Universität Erlangen-Nürnberg · Regional Centre of Advanced Technologies and Materials · +3 more institutions

PubMed
Indexed incrossrefpubmed

Abstract

Ti-deficient TiO2 nanosheets derived from lepidocrocite-type titanate delamination show a p-type conductivity with a band gap widened by the quantum confinement effect to 3.7 eV. This shift in the extended band positions─and thus in the electron transfer level─allows a direct photocatalytic nitrate reduction to ammonia without the use of any hole scavengers; this in contrast to classic TiO2. The deposition of Pt single atoms as cocatalysts onto the nanosheets significantly enhances the activity and selectivity toward ammonia, which outperforms classic Pt nanoparticles used as cocatalyst. The present study therefore reports not only on the unique photocatalytic properties of these Ti-deficient TiO2 nanosheets…

Citation impact

43
total citations
FWCI
12.15
Percentile
100%
References
51
Citations per year

Authors

8

Topics & keywords

Topics
Keywords
  • Chemistry
  • Photocatalysis
  • Nitrate
  • Ammonia
  • Reduction (mathematics)
  • Inorganic chemistry
  • Chemical engineering
  • Nanotechnology
No related works found for this paper.

Funding