Confining Bismuth-Halide Perovskite in Mesochannels of Silica Nanomembranes for Exceptional Photocatalytic Abatement of Air Pollutants
© 2024 Wiley-VCH GmbH..
Spatially confined photocatalysis has emerged as a viable strategy for the intensification of various redox reactions, but the influence of confined structure on reaction behavior is always overlooked in gas-solid reactions. Herein, we report a nanomembrane with confining Cs3 Bi2 Br9 nanocrystals inside vertical channels of porous insulated silica thin sheets (CBBSBA(⊥)) for photocatalytic nitric oxide (NO) abatement. The ordered one-dimensional (1D) pore channels with mere 70 nm channel length provide a highly accessible confined space for catalytic reactions. A record-breaking NO conversion efficiency of 98.2 % under a weight hourly space velocity (WHSV) of 3.0×106 mL g-1 h-1 , as well as exceptionally high stability over 14 h and durability over a wide humidity range (RH=15-90 %) was realized over SBA(⊥) confined Cs3 Bi2 Br9 , well beyond its nonconfined analogue and the Cs3 Bi2 Br9 confine in Santa Barbara Amorphous (SBA-15). Mechanism studies suggested that the insulated pore channels of SBA(⊥) in CBB@SBA(⊥) endow concentrated electron field and enhanced mass transfer that render high exposure of reactive species and lower reaction barrier needs for ⋅O2 - formation and NO oxidation, as well as prevents structural degradation of Cs3 Bi2 Br9 . This work expands an innovative strategy for designing efficient photocatalysts for air pollution remediation.
| Medienart: |
E-Artikel |
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| Erscheinungsjahr: |
2024 |
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| Erschienen: |
2024 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:63 |
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| Enthalten in: |
Angewandte Chemie (International ed. in English) - 63(2024), 11 vom: 11. März, Seite e202319741 |
| Sprache: |
Englisch |
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| Beteiligte Personen: |
Yang, Jingling [VerfasserIn] |
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| Links: |
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| Themen: |
Bismuth-Halide Perovskite |
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| Anmerkungen: |
Date Revised 04.03.2024 published: Print-Electronic Citation Status PubMed-not-MEDLINE |
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| doi: |
10.1002/anie.202319741 |
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| funding: |
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| Förderinstitution / Projekttitel: |
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NLM366868829 |
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| 520 | |a © 2024 Wiley-VCH GmbH. | ||
| 520 | |a Spatially confined photocatalysis has emerged as a viable strategy for the intensification of various redox reactions, but the influence of confined structure on reaction behavior is always overlooked in gas-solid reactions. Herein, we report a nanomembrane with confining Cs3 Bi2 Br9 nanocrystals inside vertical channels of porous insulated silica thin sheets (CBBSBA(⊥)) for photocatalytic nitric oxide (NO) abatement. The ordered one-dimensional (1D) pore channels with mere 70 nm channel length provide a highly accessible confined space for catalytic reactions. A record-breaking NO conversion efficiency of 98.2 % under a weight hourly space velocity (WHSV) of 3.0×106 mL g-1 h-1 , as well as exceptionally high stability over 14 h and durability over a wide humidity range (RH=15-90 %) was realized over SBA(⊥) confined Cs3 Bi2 Br9 , well beyond its nonconfined analogue and the Cs3 Bi2 Br9 confine in Santa Barbara Amorphous (SBA-15). Mechanism studies suggested that the insulated pore channels of SBA(⊥) in CBB@SBA(⊥) endow concentrated electron field and enhanced mass transfer that render high exposure of reactive species and lower reaction barrier needs for ⋅O2 - formation and NO oxidation, as well as prevents structural degradation of Cs3 Bi2 Br9 . This work expands an innovative strategy for designing efficient photocatalysts for air pollution remediation | ||
| 650 | 4 | |a Journal Article | |
| 650 | 4 | |a Bismuth-Halide Perovskite | |
| 650 | 4 | |a Confinement Effect | |
| 650 | 4 | |a Photocatalytic NO Abatement | |
| 650 | 4 | |a Porous Silica Nanomembrane | |
| 700 | 1 | |a Liu, Bin |e verfasserin |4 aut | |
| 700 | 1 | |a Zeng, Lixi |e verfasserin |4 aut | |
| 700 | 1 | |a Du, Bibai |e verfasserin |4 aut | |
| 700 | 1 | |a Zhou, Yingtang |e verfasserin |4 aut | |
| 700 | 1 | |a Tao, Hengcong |e verfasserin |4 aut | |
| 700 | 1 | |a Yun, Yang |e verfasserin |4 aut | |
| 700 | 1 | |a Zhu, Mingshan |e verfasserin |4 aut | |
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