Silica supported SO42-/TiO2 for photocatalytic decomposition of acrylonitrile under simulant solar light irradiation

Dandan Pang; Lu Qiu; Rongshu Zhu; Feng Ouyang

doi:10.1016/j.cej.2015.02.055

Silica supported SO42-/TiO₂ for photocatalytic decomposition of acrylonitrile under simulant solar light irradiation

Dandan Pang
, Lu Qiu
, Rongshu Zhu
, Feng Ouyang^*

^*Corresponding author for this work

Harbin Institute of Technology Shenzhen

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

29 Scopus citations

Abstract

The SO42-/TiO₂/SiO₂ solid acids were prepared by impregnation method. The prepared powders were characterized by scanning electron microscope (SEM), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), Brunauer-Emmett-Teller (BET), Fourier transform infrared spectroscopy (FT-IR), and UV spectrophotometer. The photocatalytic activities of the powders were investigated using acrylonitrile as a probe molecule. The results showed that sulfur was highly dispersed in TiO₂ crystals in the form of SO42-. In situ IR and UV spectrophotometer showed that the higher photocatalytic activity of SO42-/TiO₂/SiO₂ solid acid was due to the increase of the surface Bronsted and Lewis acid sites. However, excess coverage of SO42- on TiO₂/SiO₂ surface decreased the photocatalytic activity due to inhibition of light absorption. The optimum synthesis conditions were calcination temperature at 450°C for 2h and 7.04wt.% SO42- content. The degradation ratio of acrylonitrile reached to 97% with 1.0g SO42-/TiO₂/SiO₂ solid acid for 30min irradiation, indicating the effectiveness of photocatalytic degradation of acrylonitrile using the prepared catalyst.

Original language	English
Pages (from-to)	590-596
Number of pages	7
Journal	Chemical Engineering Journal
Volume	270
DOIs	https://doi.org/10.1016/j.cej.2015.02.055
State	Published - 5 Jun 2015
Externally published	Yes

Keywords

Acrylonitrile
In situ iR
Photocatalytic activity
SO42-/TiO/SiO solid acid

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10.1016/j.cej.2015.02.055

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@article{5ba8c1767e0841f7a584b67a97e8d868,

title = "Silica supported SO42-/TiO2 for photocatalytic decomposition of acrylonitrile under simulant solar light irradiation",

abstract = "The SO42-/TiO2/SiO2 solid acids were prepared by impregnation method. The prepared powders were characterized by scanning electron microscope (SEM), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), Brunauer-Emmett-Teller (BET), Fourier transform infrared spectroscopy (FT-IR), and UV spectrophotometer. The photocatalytic activities of the powders were investigated using acrylonitrile as a probe molecule. The results showed that sulfur was highly dispersed in TiO2 crystals in the form of SO42-. In situ IR and UV spectrophotometer showed that the higher photocatalytic activity of SO42-/TiO2/SiO2 solid acid was due to the increase of the surface Bronsted and Lewis acid sites. However, excess coverage of SO42- on TiO2/SiO2 surface decreased the photocatalytic activity due to inhibition of light absorption. The optimum synthesis conditions were calcination temperature at 450°C for 2h and 7.04wt.\% SO42- content. The degradation ratio of acrylonitrile reached to 97\% with 1.0g SO42-/TiO2/SiO2 solid acid for 30min irradiation, indicating the effectiveness of photocatalytic degradation of acrylonitrile using the prepared catalyst.",

keywords = "Acrylonitrile, In situ iR, Photocatalytic activity, SO42-/TiO/SiO solid acid",

author = "Dandan Pang and Lu Qiu and Rongshu Zhu and Feng Ouyang",

note = "Publisher Copyright: {\textcopyright} 2015.",

year = "2015",

month = jun,

day = "5",

doi = "10.1016/j.cej.2015.02.055",

language = "英语",

volume = "270",

pages = "590--596",

journal = "Chemical Engineering Journal",

issn = "1385-8947",

publisher = "Elsevier B.V.",

}

TY - JOUR

T1 - Silica supported SO42-/TiO2 for photocatalytic decomposition of acrylonitrile under simulant solar light irradiation

AU - Pang, Dandan

AU - Qiu, Lu

AU - Zhu, Rongshu

AU - Ouyang, Feng

PY - 2015/6/5

Y1 - 2015/6/5

N2 - The SO42-/TiO2/SiO2 solid acids were prepared by impregnation method. The prepared powders were characterized by scanning electron microscope (SEM), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), Brunauer-Emmett-Teller (BET), Fourier transform infrared spectroscopy (FT-IR), and UV spectrophotometer. The photocatalytic activities of the powders were investigated using acrylonitrile as a probe molecule. The results showed that sulfur was highly dispersed in TiO2 crystals in the form of SO42-. In situ IR and UV spectrophotometer showed that the higher photocatalytic activity of SO42-/TiO2/SiO2 solid acid was due to the increase of the surface Bronsted and Lewis acid sites. However, excess coverage of SO42- on TiO2/SiO2 surface decreased the photocatalytic activity due to inhibition of light absorption. The optimum synthesis conditions were calcination temperature at 450°C for 2h and 7.04wt.% SO42- content. The degradation ratio of acrylonitrile reached to 97% with 1.0g SO42-/TiO2/SiO2 solid acid for 30min irradiation, indicating the effectiveness of photocatalytic degradation of acrylonitrile using the prepared catalyst.

AB - The SO42-/TiO2/SiO2 solid acids were prepared by impregnation method. The prepared powders were characterized by scanning electron microscope (SEM), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), Brunauer-Emmett-Teller (BET), Fourier transform infrared spectroscopy (FT-IR), and UV spectrophotometer. The photocatalytic activities of the powders were investigated using acrylonitrile as a probe molecule. The results showed that sulfur was highly dispersed in TiO2 crystals in the form of SO42-. In situ IR and UV spectrophotometer showed that the higher photocatalytic activity of SO42-/TiO2/SiO2 solid acid was due to the increase of the surface Bronsted and Lewis acid sites. However, excess coverage of SO42- on TiO2/SiO2 surface decreased the photocatalytic activity due to inhibition of light absorption. The optimum synthesis conditions were calcination temperature at 450°C for 2h and 7.04wt.% SO42- content. The degradation ratio of acrylonitrile reached to 97% with 1.0g SO42-/TiO2/SiO2 solid acid for 30min irradiation, indicating the effectiveness of photocatalytic degradation of acrylonitrile using the prepared catalyst.

KW - Acrylonitrile

KW - In situ iR

KW - Photocatalytic activity

KW - SO42-/TiO/SiO solid acid

UR - https://www.scopus.com/pages/publications/84924142023

U2 - 10.1016/j.cej.2015.02.055

DO - 10.1016/j.cej.2015.02.055

M3 - 文章

AN - SCOPUS:84924142023

SN - 1385-8947

VL - 270

SP - 590

EP - 596

JO - Chemical Engineering Journal

JF - Chemical Engineering Journal

ER -

Silica supported SO42-/TiO₂ for photocatalytic decomposition of acrylonitrile under simulant solar light irradiation

Abstract

Keywords

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