A nanohybrid of CdTe@CdS nanocrystals and titania nanosheets with p-n nanojunctions for improved visible light-driven hydrogen production
Article
Article Title | A nanohybrid of CdTe@CdS nanocrystals and titania nanosheets with p-n nanojunctions for improved visible light-driven hydrogen production |
---|---|
ERA Journal ID | 1417 |
Article Category | Article |
Authors | Xing, Zheng (Author), Zong, Xu (Author), Zhu, Yian (Author), Chen, Zhi Gang (Author), Bai, Yang (Author) and Wang, Lianzhou (Author) |
Journal Title | Catalysis Today |
Journal Citation | 264, pp. 229-235 |
Number of Pages | 7 |
Year | 2016 |
Place of Publication | Netherlands |
ISSN | 0920-5861 |
1873-4308 | |
Digital Object Identifier (DOI) | https://doi.org/10.1016/j.cattod.2015.08.007 |
Web Address (URL) | http://www.sciencedirect.com/science/article/pii/S0920586115004873?via%3Dihub |
Abstract | A nanohybrid photocatalyst composed of CdTe@CdS nanocrystals and single-layered exfoliated titania nanosheets was synthesized through a well-defined restacking approach. The nanohybrid possessed an expanded layered structure, with ultrathin titania nanosheets randomly restacked upon each other and CdTe@CdS nanocrystals sandwiched between the nanosheets. The introduction of CdTe@CdS nanocrystals not only extended the light absorption of the photocatalyst to the visible range, but also formed p-n nanojunctions in the nanohybrid. The resultant materials containing same amount of CdTe@CdS nanocrystals exhibited over 43 times higher activity than pure CdTe@CdS nanocrystals for hydrogen production under visible light irradiation (λ > 420 nm) while titania nanosheets alone were not capable of producing any hydrogen under the same conditions. The superior photocatalytic efficiency of the nanohybrid can be attributed to the effective charge separation, which is achieved by the synergetic effect of proper energy bands alignment and p-n nanojunctions. |
Keywords | CdTe@CdS nanocrystals; Hydrogen production; Nanohybrid; Photocatalysis; Titania nanosheets; CdS nanocrystals; Layered Structures; Nano hybrids; Photocatalytic efficiency; Synergetic effect; Titania nanosheet; Visible-light irradiation; Visible-light-driven; Catalysts/Zeolites; Chemicals-Processing Catalysts; Petroleum Refining and Petrochemicals; |
ANZSRC Field of Research 2020 | 340399. Macromolecular and materials chemistry not elsewhere classified |
Public Notes | Files associated with this item cannot be displayed due to copyright restrictions. |
Byline Affiliations | University of Queensland |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q414y/a-nanohybrid-of-cdte-cds-nanocrystals-and-titania-nanosheets-with-p-n-nanojunctions-for-improved-visible-light-driven-hydrogen-production
1235
total views8
total downloads0
views this month0
downloads this month