Boosting photocatalytic multi-VOCs decontamination over COF-based heterojunction via targeted construction of Ov–M–N charge channel (M = Ti, Zn, W, Ce) and –NH2 functionalization

Zhao Hu; Yan Wang; Yujiao Zhang; Hongguo Wu; Wen Da Oh; Hu Li; Chao He

doi:10.1016/j.apcatb.2024.124532

Boosting photocatalytic multi-VOCs decontamination over COF-based heterojunction via targeted construction of Ov–M–N charge channel (M = Ti, Zn, W, Ce) and –NH₂ functionalization

Zhao Hu, Yan Wang, Yujiao Zhang, Hongguo Wu, Wen Da Oh, Hu Li, Chao He

Materials Science and Environmental Engineering

Research output: Contribution to journal › Article › Scientific › peer-review

3 Citations (Scopus)

1 Downloads (Pure)

Abstract

Covalent organic frameworks (COF) based materials have exhibited excellent gas and visible light absorption capability, yet are very difficult to generate strong oxidative species for photocatalytic mineralization of volatile organic compounds (VOCs). Here, a facile in situ modulation protocol developed could enable the growth of MO_x (M = Ti, Zn, W, Ce) with oxygen vacancy (Ov) on –NH₂-functionalized COF surfaces to construct NH₂–COF/Ov–MO_x Z–scheme heterojunctions of excellent stability and efficiency (98.3 %) in photo-oxidation of formaldehyde, acetaldehyde, and acetone. The –NH₂ functionalization enhanced VOC chemisorption via H-bond interaction. Moreover, the constructed fast charge transfer channel (Ov–M–N) at the interface not only promoted directional migration of photo-excited carrier, activated adsorbed O₂ and H₂O to quickly generate strong •OH, but also effectively inhibited injurant formation to realize the precise control of the conversion path. These findings offer new insights into customizing the interfacial structure of COF for indoor air purification.

Original language	English
Article number	124532
Journal	Applied Catalysis B: Environmental
Volume	360
Early online date	27 Aug 2024
DOIs	https://doi.org/10.1016/j.apcatb.2024.124532
Publication status	Published - Jan 2025
Publication type	A1 Journal article-refereed

Funding

The authors thank the National Natural Science Foundation of China (22368014), Guizhou Provincial S&T Project (GCC[2023]011, ZK[2022]011), Guizhou University Foundation for Newly Enrolled Talent ([2023]01), and the Graduate Research Foundation of Guizhou Province (YJSKYJJ [2021] 039, YJSKYJJ [2021] 040). The authors thank the National Natural Science Foundation of China (22368014), Guizhou Provincial S&T Project (GCC[2023]011, ZK[2022]011), Guizhou University Found for Newly Enrolled Talent ([2023]01), and the Graduate Research Foundation of Guizhou Province (YJSKYJJ [2021] 039, YJSKYJJ [2021] 040).

Funders	Funder number
Guizhou University Foundation for Newly Enrolled Talent
Guizhou Provincial S&T Project	ZK[2022]011, GCC[2023]011
Graduate Research Foundation of Guizhou Province	YJSKYJJ [2021] 040, YJSKYJJ [2021] 039
Guizhou University Found for Newly Enrolled Talent	[2023]01
National Natural Science Foundation of China	22368014

Keywords

COF–based photocatalysts
Environmental photocatalysis
HCHO removal
Indoor air contaminants
Volatile organic compounds

Publication forum classification

Publication forum level 3

ASJC Scopus subject areas

Catalysis
General Environmental Science
Process Chemistry and Technology

Access to Document

10.1016/j.apcatb.2024.124532Licence: CC BY

Boosting photocatalyticFinal published version, 10.3 MBLicence: CC BY

https://urn.fi/URN:NBN:fi:tuni-202409168725Licence: CC BY

Cite this

@article{9db7c517c8e644dab50a1b8f11f32957,

title = "Boosting photocatalytic multi-VOCs decontamination over COF-based heterojunction via targeted construction of Ov–M–N charge channel (M = Ti, Zn, W, Ce) and –NH2 functionalization",

abstract = "Covalent organic frameworks (COF) based materials have exhibited excellent gas and visible light absorption capability, yet are very difficult to generate strong oxidative species for photocatalytic mineralization of volatile organic compounds (VOCs). Here, a facile in situ modulation protocol developed could enable the growth of MOx (M = Ti, Zn, W, Ce) with oxygen vacancy (Ov) on –NH2-functionalized COF surfaces to construct NH2–COF/Ov–MOx Z–scheme heterojunctions of excellent stability and efficiency (98.3 %) in photo-oxidation of formaldehyde, acetaldehyde, and acetone. The –NH2 functionalization enhanced VOC chemisorption via H-bond interaction. Moreover, the constructed fast charge transfer channel (Ov–M–N) at the interface not only promoted directional migration of photo-excited carrier, activated adsorbed O2 and H2O to quickly generate strong •OH, but also effectively inhibited injurant formation to realize the precise control of the conversion path. These findings offer new insights into customizing the interfacial structure of COF for indoor air purification.",

keywords = "COF–based photocatalysts, Environmental photocatalysis, HCHO removal, Indoor air contaminants, Volatile organic compounds",

author = "Zhao Hu and Yan Wang and Yujiao Zhang and Hongguo Wu and Oh, {Wen Da} and Hu Li and Chao He",

note = "Publisher Copyright: {\textcopyright} 2024 The Authors",

year = "2025",

month = jan,

doi = "10.1016/j.apcatb.2024.124532",

language = "English",

volume = "360",

journal = "Applied Catalysis B: Environmental",

issn = "0926-3373",

publisher = "Elsevier B.V.",

}

Boosting photocatalytic multi-VOCs decontamination over COF-based heterojunction via targeted construction of Ov–M–N charge channel (M = Ti, Zn, W, Ce) and –NH₂ functionalization. / Hu, Zhao; Wang, Yan; Zhang, Yujiao et al.
In: Applied Catalysis B: Environmental, Vol. 360, 124532, 01.2025.

Research output: Contribution to journal › Article › Scientific › peer-review

TY - JOUR

T1 - Boosting photocatalytic multi-VOCs decontamination over COF-based heterojunction via targeted construction of Ov–M–N charge channel (M = Ti, Zn, W, Ce) and –NH2 functionalization

AU - Hu, Zhao

AU - Wang, Yan

AU - Zhang, Yujiao

AU - Wu, Hongguo

AU - Oh, Wen Da

AU - Li, Hu

AU - He, Chao

PY - 2025/1

Y1 - 2025/1

N2 - Covalent organic frameworks (COF) based materials have exhibited excellent gas and visible light absorption capability, yet are very difficult to generate strong oxidative species for photocatalytic mineralization of volatile organic compounds (VOCs). Here, a facile in situ modulation protocol developed could enable the growth of MOx (M = Ti, Zn, W, Ce) with oxygen vacancy (Ov) on –NH2-functionalized COF surfaces to construct NH2–COF/Ov–MOx Z–scheme heterojunctions of excellent stability and efficiency (98.3 %) in photo-oxidation of formaldehyde, acetaldehyde, and acetone. The –NH2 functionalization enhanced VOC chemisorption via H-bond interaction. Moreover, the constructed fast charge transfer channel (Ov–M–N) at the interface not only promoted directional migration of photo-excited carrier, activated adsorbed O2 and H2O to quickly generate strong •OH, but also effectively inhibited injurant formation to realize the precise control of the conversion path. These findings offer new insights into customizing the interfacial structure of COF for indoor air purification.

AB - Covalent organic frameworks (COF) based materials have exhibited excellent gas and visible light absorption capability, yet are very difficult to generate strong oxidative species for photocatalytic mineralization of volatile organic compounds (VOCs). Here, a facile in situ modulation protocol developed could enable the growth of MOx (M = Ti, Zn, W, Ce) with oxygen vacancy (Ov) on –NH2-functionalized COF surfaces to construct NH2–COF/Ov–MOx Z–scheme heterojunctions of excellent stability and efficiency (98.3 %) in photo-oxidation of formaldehyde, acetaldehyde, and acetone. The –NH2 functionalization enhanced VOC chemisorption via H-bond interaction. Moreover, the constructed fast charge transfer channel (Ov–M–N) at the interface not only promoted directional migration of photo-excited carrier, activated adsorbed O2 and H2O to quickly generate strong •OH, but also effectively inhibited injurant formation to realize the precise control of the conversion path. These findings offer new insights into customizing the interfacial structure of COF for indoor air purification.

KW - COF–based photocatalysts

KW - Environmental photocatalysis

KW - HCHO removal

KW - Indoor air contaminants

KW - Volatile organic compounds

U2 - 10.1016/j.apcatb.2024.124532

DO - 10.1016/j.apcatb.2024.124532

M3 - Article

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JO - Applied Catalysis B: Environmental

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