Rich surface hydroxyl design for nanostructured TiO2 and its hole-trapping effect
- verfasst von
- S.-T. Xiao, S.-M. Wu, Y. Dong, J.-W. Liu, L.-Y. Wang, L. Wu, Y.-X. Zhang, G. Tian, C. Janiak, M. Shalom, Y.-T. Wang, Y.-Z. Li, R.-K. Jia, D.W. Bahnemann, X.-Y. Yang
- Abstract
The surface hydroxyl groups in TiO
2 are crucial to many of its practical applications, but their controlled synthesis represents still a challenge. Herein, nanostructured TiO
2 with rich surface hydroxyl species groups and high crystallinity (TiO
2-OH) by high-temperature calcination have been developed by using the ionic liquid. Experimental measurements and theoretical calculations show a strong surface hydroxyl signal of two-dimensional
1H TQ-SQ MAS NMR, as well as clear changes of the charge density of TiO
2 with the rich surface hydroxyl species. Moreover, the rich surface hydroxyl species groups in TiO
2 not only significantly enhance its performances involving photogenerated current, photocatalysis and energy strorage but also show a bright future on marine applications because of its high activity and stability in simulation seawater. The characteristics and mechanism have been proposed to clarify the generation of surface hydroxyl species of TiO
2 and the correponding directed hole-trapping at an atomic-/nanoscale.
- Organisationseinheit(en)
-
Institut für Technische Chemie
- Externe Organisation(en)
-
Wuhan University of Technology
Sun Yat-Sen University
Chinese Academy of Sciences (CAS)
Hubei University
Harvard University
Heinrich-Heine-Universität Düsseldorf
Ben-Gurion University of the Negev (BGU)
Northeast Electric Power University (NEEPU)
Staatliche Universität Sankt Petersburg
Qingdao University
- Typ
- Artikel
- Journal
- Chemical engineering journal
- Band
- 400
- ISSN
- 1385-8947
- Publikationsdatum
- 15.11.2020
- Publikationsstatus
- Veröffentlicht
- Peer-reviewed
- Ja
- ASJC Scopus Sachgebiete
- Allgemeine Chemie, Umweltchemie, Allgemeine chemische Verfahrenstechnik, Wirtschaftsingenieurwesen und Fertigungstechnik
- Ziele für nachhaltige Entwicklung
- SDG 7 – Erschwingliche und saubere Energie, SDG 14 – Lebensraum Wasser
- Elektronische Version(en)
-
https://doi.org/10.1016/j.cej.2020.125909 (Zugang:
Geschlossen)
