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Thermally treated zeolitic imidazolate framework-8 (ZIF-8) for visible light photocatalytic degradation of gaseous formaldehyde

The development of wide-spectrum responsive photocatalysts for efficient formaldehyde (HCHO) removal is highly desired yet remains a great challenge. Here we successfully converted zeolitic imidazolate framework-8 (ZIF-8), one of the most well-studied metal–organic frameworks (MOFs), from routine ul...

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Autores principales: Wang, Tianqi, Wang, Yufei, Sun, Mingzhe, Hanif, Aamir, Wu, Hao, Gu, Qinfen, Ok, Yong Sik, Tsang, Daniel C. W., Li, Jiyang, Yu, Jihong, Shang, Jin
Formato: Online Artículo Texto
Lenguaje:English
Publicado: The Royal Society of Chemistry 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8159372/
https://www.ncbi.nlm.nih.gov/pubmed/34094125
http://dx.doi.org/10.1039/d0sc01397h
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author Wang, Tianqi
Wang, Yufei
Sun, Mingzhe
Hanif, Aamir
Wu, Hao
Gu, Qinfen
Ok, Yong Sik
Tsang, Daniel C. W.
Li, Jiyang
Yu, Jihong
Shang, Jin
author_facet Wang, Tianqi
Wang, Yufei
Sun, Mingzhe
Hanif, Aamir
Wu, Hao
Gu, Qinfen
Ok, Yong Sik
Tsang, Daniel C. W.
Li, Jiyang
Yu, Jihong
Shang, Jin
author_sort Wang, Tianqi
collection PubMed
description The development of wide-spectrum responsive photocatalysts for efficient formaldehyde (HCHO) removal is highly desired yet remains a great challenge. Here we successfully converted zeolitic imidazolate framework-8 (ZIF-8), one of the most well-studied metal–organic frameworks (MOFs), from routine ultraviolet-driven to novel broad-spectrum-driven photocatalyst via a facile thermal treatment. The isocyanate groups (–N[double bond, length as m-dash]C[double bond, length as m-dash]O) formed in the thermally treated ZIF-8 (ZIF-8-T) is crucial in enabling the superior photocatalytic performance in formaldehyde degradation. Specifically, the best-performing ZIF-8-T sample showed around 2.1 and 9.4 times the HCHO adsorption amount and the solar photocatalytic degradation rate, respectively, of pristine ZIF-8. In addition, ZIF-8-T exhibited visible light (λ ≥ 400 nm) photocatalytic HCHO degradation performance, photo-converting 72% and nearly 100% of 20 ppm and 10 ppm HCHO within 1 hour, respectively. This work affords new insights and knowledge that inspire and inform the design and development of MOF-based photocatalysts with broad-spectrum responses for efficient air purification operations.
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spelling pubmed-81593722021-06-04 Thermally treated zeolitic imidazolate framework-8 (ZIF-8) for visible light photocatalytic degradation of gaseous formaldehyde Wang, Tianqi Wang, Yufei Sun, Mingzhe Hanif, Aamir Wu, Hao Gu, Qinfen Ok, Yong Sik Tsang, Daniel C. W. Li, Jiyang Yu, Jihong Shang, Jin Chem Sci Chemistry The development of wide-spectrum responsive photocatalysts for efficient formaldehyde (HCHO) removal is highly desired yet remains a great challenge. Here we successfully converted zeolitic imidazolate framework-8 (ZIF-8), one of the most well-studied metal–organic frameworks (MOFs), from routine ultraviolet-driven to novel broad-spectrum-driven photocatalyst via a facile thermal treatment. The isocyanate groups (–N[double bond, length as m-dash]C[double bond, length as m-dash]O) formed in the thermally treated ZIF-8 (ZIF-8-T) is crucial in enabling the superior photocatalytic performance in formaldehyde degradation. Specifically, the best-performing ZIF-8-T sample showed around 2.1 and 9.4 times the HCHO adsorption amount and the solar photocatalytic degradation rate, respectively, of pristine ZIF-8. In addition, ZIF-8-T exhibited visible light (λ ≥ 400 nm) photocatalytic HCHO degradation performance, photo-converting 72% and nearly 100% of 20 ppm and 10 ppm HCHO within 1 hour, respectively. This work affords new insights and knowledge that inspire and inform the design and development of MOF-based photocatalysts with broad-spectrum responses for efficient air purification operations. The Royal Society of Chemistry 2020-05-21 /pmc/articles/PMC8159372/ /pubmed/34094125 http://dx.doi.org/10.1039/d0sc01397h Text en This journal is © The Royal Society of Chemistry https://creativecommons.org/licenses/by/3.0/
spellingShingle Chemistry
Wang, Tianqi
Wang, Yufei
Sun, Mingzhe
Hanif, Aamir
Wu, Hao
Gu, Qinfen
Ok, Yong Sik
Tsang, Daniel C. W.
Li, Jiyang
Yu, Jihong
Shang, Jin
Thermally treated zeolitic imidazolate framework-8 (ZIF-8) for visible light photocatalytic degradation of gaseous formaldehyde
title Thermally treated zeolitic imidazolate framework-8 (ZIF-8) for visible light photocatalytic degradation of gaseous formaldehyde
title_full Thermally treated zeolitic imidazolate framework-8 (ZIF-8) for visible light photocatalytic degradation of gaseous formaldehyde
title_fullStr Thermally treated zeolitic imidazolate framework-8 (ZIF-8) for visible light photocatalytic degradation of gaseous formaldehyde
title_full_unstemmed Thermally treated zeolitic imidazolate framework-8 (ZIF-8) for visible light photocatalytic degradation of gaseous formaldehyde
title_short Thermally treated zeolitic imidazolate framework-8 (ZIF-8) for visible light photocatalytic degradation of gaseous formaldehyde
title_sort thermally treated zeolitic imidazolate framework-8 (zif-8) for visible light photocatalytic degradation of gaseous formaldehyde
topic Chemistry
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8159372/
https://www.ncbi.nlm.nih.gov/pubmed/34094125
http://dx.doi.org/10.1039/d0sc01397h
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