Fluorinated TiO2 coupling with α-MnO2 nanowires supported on different substrates for photocatalytic VOCs abatement under vacuum ultraviolet irradiation

Yingguang Zhang; Muyan Wu; Yifei Wang; Yu Ho Kwok; Wending Pan; Wai Szeto; Haibao Huang; Dennis Y.C. Leung

doi:10.1016/j.apcatb.2020.119388

Fluorinated TiO₂ coupling with α-MnO₂ nanowires supported on different substrates for photocatalytic VOCs abatement under vacuum ultraviolet irradiation

Yingguang Zhang
, Muyan Wu
, Yifei Wang
, Yu Ho Kwok
, Wending Pan
, Wai Szeto
, Haibao Huang
, Dennis Y.C. Leung^*

^*Corresponding author for this work

The University of Hong Kong
Sun Yat-Sen University

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

80 Scopus citations

Abstract

The particular role of fluorine (F) doping in the photocatalytic activity of nanocrystalline titanium dioxide (TiO₂) towards toluene degradation was systematically studied. TiO₂ nanosheet catalysts doped with different amounts of F⁻ (denoted by F-TiO₂) were synthesized by hydrothermal method. For comparison, calcination was performed on the catalyst to remove F^-. The photocatalytic oxidation (PCO) of toluene over F-TiO₂ was found to be much higher than those of TiO₂ and commercial P25 under the irradiation of vacuum ultraviolet (VUV) light, with a high toluene degradation efficiency of about 90 %. Moreover, the toluene degradation efficiency increased to 96 % with the addition of only 1 wt.% α-MnO₂ nanowires, and the residual ozone (O₃) in the system can be completely eliminated. In addition, four different substrates were explored for catalyst coating to facilitate the operation and minimize catalyst loading, which can provide a promising strategy for practical volatile organic compounds (VOCs) abatement in industrial applications.

Original language	English
Article number	119388
Journal	Applied Catalysis B: Environmental
Volume	280
DOIs	https://doi.org/10.1016/j.apcatb.2020.119388
State	Published - Jan 2021
Externally published	Yes

Keywords

F-TiO
Ni foam
PCO-VUV
Reduced graphene oxide
VOCs abatement

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10.1016/j.apcatb.2020.119388

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@article{abeaf1d085814667ba28c0f2ab7667fa,

title = "Fluorinated TiO2 coupling with α-MnO2 nanowires supported on different substrates for photocatalytic VOCs abatement under vacuum ultraviolet irradiation",

abstract = "The particular role of fluorine (F) doping in the photocatalytic activity of nanocrystalline titanium dioxide (TiO2) towards toluene degradation was systematically studied. TiO2 nanosheet catalysts doped with different amounts of F− (denoted by F-TiO2) were synthesized by hydrothermal method. For comparison, calcination was performed on the catalyst to remove F-. The photocatalytic oxidation (PCO) of toluene over F-TiO2 was found to be much higher than those of TiO2 and commercial P25 under the irradiation of vacuum ultraviolet (VUV) light, with a high toluene degradation efficiency of about 90 \%. Moreover, the toluene degradation efficiency increased to 96 \% with the addition of only 1 wt.\% α-MnO2 nanowires, and the residual ozone (O3) in the system can be completely eliminated. In addition, four different substrates were explored for catalyst coating to facilitate the operation and minimize catalyst loading, which can provide a promising strategy for practical volatile organic compounds (VOCs) abatement in industrial applications.",

keywords = "F-TiO, Ni foam, PCO-VUV, Reduced graphene oxide, VOCs abatement",

author = "Yingguang Zhang and Muyan Wu and Yifei Wang and Kwok, \{Yu Ho\} and Wending Pan and Wai Szeto and Haibao Huang and Leung, \{Dennis Y.C.\}",

note = "Publisher Copyright: {\textcopyright} 2020 Elsevier B.V.",

year = "2021",

month = jan,

doi = "10.1016/j.apcatb.2020.119388",

language = "英语",

volume = "280",

journal = "Applied Catalysis B: Environmental",

issn = "0926-3373",

publisher = "Elsevier B.V.",

}

TY - JOUR

T1 - Fluorinated TiO2 coupling with α-MnO2 nanowires supported on different substrates for photocatalytic VOCs abatement under vacuum ultraviolet irradiation

AU - Zhang, Yingguang

AU - Wu, Muyan

AU - Wang, Yifei

AU - Kwok, Yu Ho

AU - Pan, Wending

AU - Szeto, Wai

AU - Huang, Haibao

AU - Leung, Dennis Y.C.

PY - 2021/1

Y1 - 2021/1

N2 - The particular role of fluorine (F) doping in the photocatalytic activity of nanocrystalline titanium dioxide (TiO2) towards toluene degradation was systematically studied. TiO2 nanosheet catalysts doped with different amounts of F− (denoted by F-TiO2) were synthesized by hydrothermal method. For comparison, calcination was performed on the catalyst to remove F-. The photocatalytic oxidation (PCO) of toluene over F-TiO2 was found to be much higher than those of TiO2 and commercial P25 under the irradiation of vacuum ultraviolet (VUV) light, with a high toluene degradation efficiency of about 90 %. Moreover, the toluene degradation efficiency increased to 96 % with the addition of only 1 wt.% α-MnO2 nanowires, and the residual ozone (O3) in the system can be completely eliminated. In addition, four different substrates were explored for catalyst coating to facilitate the operation and minimize catalyst loading, which can provide a promising strategy for practical volatile organic compounds (VOCs) abatement in industrial applications.

AB - The particular role of fluorine (F) doping in the photocatalytic activity of nanocrystalline titanium dioxide (TiO2) towards toluene degradation was systematically studied. TiO2 nanosheet catalysts doped with different amounts of F− (denoted by F-TiO2) were synthesized by hydrothermal method. For comparison, calcination was performed on the catalyst to remove F-. The photocatalytic oxidation (PCO) of toluene over F-TiO2 was found to be much higher than those of TiO2 and commercial P25 under the irradiation of vacuum ultraviolet (VUV) light, with a high toluene degradation efficiency of about 90 %. Moreover, the toluene degradation efficiency increased to 96 % with the addition of only 1 wt.% α-MnO2 nanowires, and the residual ozone (O3) in the system can be completely eliminated. In addition, four different substrates were explored for catalyst coating to facilitate the operation and minimize catalyst loading, which can provide a promising strategy for practical volatile organic compounds (VOCs) abatement in industrial applications.

KW - F-TiO

KW - Ni foam

KW - PCO-VUV

KW - Reduced graphene oxide

KW - VOCs abatement

UR - https://www.scopus.com/pages/publications/85089344987

U2 - 10.1016/j.apcatb.2020.119388

DO - 10.1016/j.apcatb.2020.119388

M3 - 文章

AN - SCOPUS:85089344987

SN - 0926-3373

VL - 280

JO - Applied Catalysis B: Environmental

JF - Applied Catalysis B: Environmental

M1 - 119388

ER -

Fluorinated TiO₂ coupling with α-MnO₂ nanowires supported on different substrates for photocatalytic VOCs abatement under vacuum ultraviolet irradiation

Abstract

Keywords

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