In:
Angewandte Chemie, Wiley, Vol. 134, No. 19 ( 2022-05-02)
Abstract:
Simulating photosynthesis has long been one of the ideas for realizing the conversion of solar energy into industrial chemicals. Heterogeneous N 2 photofixation in water is a promising way for sustainable production of ammonia. However, a mechanistic understanding of the complex aqueous photocatalytic N 2 reduction is still lacking. In this study, a light‐dependent surface hydrogenation mechanism and light‐independent protection of catalyst surface for N 2 reduction are revealed on ultrathin Bi 4 O 5 Br 2 (BOB) nanosheets, in which the creation and annihilation of surface bromine vacancies can be controlled via a surface bromine cycle. Our rapid scan in situ FT‐IR spectra verify that photocatalytic N 2 reduction proceeds through an associative alternating mechanism on BOB surface with bromine vacancies (BrV‐BOB). This work provides a new strategy to combine light‐dependent facilitated reaction with light‐independent regeneration of catalyst for advancing sustainable ammonia production.
Type of Medium:
Online Resource
ISSN:
0044-8249
,
1521-3757
DOI:
10.1002/ange.v134.19
DOI:
10.1002/ange.202200937
Language:
English
Publisher:
Wiley
Publication Date:
2022
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