Back to Search
Start Over
High visible-light photocatalytic performance of stable lead-free Cs2AgBiBr6 double perovskite nanocrystals.
- Source :
-
Journal of Catalysis . May2021, Vol. 397, p27-35. 9p. - Publication Year :
- 2021
-
Abstract
- A lead-free all-inorganic Cs 2 AgBiBr 6 double perovskite nanocrystals photocatalyst exhibits excellent ability to eliminate NO gas under visible light irradiation. [Display omitted] • Lead-free Cs 2 AgBiBr 6 double perovskite nanocrystals were first applied to NO photocatalytic field. • Cs 2 AgBiBr 6 NCs show excellent stability toward air and heat. • The removal efficiency of NO can reach up to 97.22% under visible light. • The photocatalytic mechanism of Cs 2 AgBiBr 6 NCs was proposed. Lead halide perovskite nanocrystals (NCs) have been recognized as a rather competitive candidates for potential advanced optoelectronic applications. But the toxicity of lead and the intrinsic instability are the key concerns for their large-scale commercialization. For addressing these tricky issues, we synthesized lead-free all-inorganic Cs 2 AgBiBr 6 double perovskite NCs adopting a facile hot injection approach. The as-prepared NCs could keep their structure stable either in air for more than two months or being heated at 300 °C in ambient atmosphere for 3 h. Moreover, Cs 2 AgBiBr 6 NCs were investigated for photocatalytic NO removal under visible-light irradiation, achieving an exciting removal rate of 97%, which is much higher than the previous reports as we know. In addition, the Cs 2 AgBiBr 6 NCs demonstrated outstanding recyclability for at least four cycles in NO removal. The photocatalytic mechanism of Cs 2 AgBiBr 6 NCs was further proposed. This investigation offers a new environmental photocatalyst to purify the air. [ABSTRACT FROM AUTHOR]
- Subjects :
- *PEROVSKITE
*VISIBLE spectra
*LEAD halides
Subjects
Details
- Language :
- English
- ISSN :
- 00219517
- Volume :
- 397
- Database :
- Academic Search Index
- Journal :
- Journal of Catalysis
- Publication Type :
- Academic Journal
- Accession number :
- 150361279
- Full Text :
- https://doi.org/10.1016/j.jcat.2021.03.007