In:
Angewandte Chemie, Wiley, Vol. 134, No. 37 ( 2022-09-12)
Abstract:
Crystalline metal oxide nanosheets show exceptional catalytic performance owing to the large surface‐to‐volume ratio and quantum confinement effect. However, it is still a challenge to develop a facile and general method to synthesize metal oxide nanosheets. Herein, we report a cocrystallization induced spatial self‐confinement approach to synthesize metal oxide nanosheets. Taking the synthesis of SnO 2 as an example, the solvent evaporation from KCl and SnCl 2 solution induces the cocrystallization of KCl and K 2 SnCl 6 , and the obtained composite with encapsulated K 2 SnCl 6 can be in situ converted into SnO 2 nanosheets confined in KCl matrix, after water washing to remove KCl, porous SnO 2 nanosheets can be obtained. Notably, a series of metal oxide nanosheets can be obtained through this general and efficient green route. In particular, porous CeO 2 /SnO 2 nanosheets with improved surface O − species and abundant oxygen vacancies exhibit superior gas sensing performance to 3‐hydroxy‐2‐butanone.
Type of Medium:
Online Resource
ISSN:
0044-8249
,
1521-3757
DOI:
10.1002/ange.v134.37
DOI:
10.1002/ange.202207816
Language:
English
Publisher:
Wiley
Publication Date:
2022
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