Abstract
We have investigated a photocatalytic ozonation system of seven metal oxide semiconductors, TiO2 (P25), Nb2O5, SnO2, WO3, Fe2O3, In2O3, and BiVO4, under visible light both with and without UV irradiation for their efficacy in removing total organic carbon (TOC) from aqueous oxalic acid solution for water treatment. The investigation revealed that all the metal oxide samples functioned as photocatalysts for the photocatalytic ozonation system. TiO2 exhibited the highest activity under UV irradiation, and also exhibited a little activity under visible light irradiation. WO3, Fe2O3, In2O3, and BiVO4 functioned as visible-light-responsive photocatalysts and Fe2O3, In2O3, and BiVO4 were newly identified as active photocatalysts under visible light irradiation for the photocatalytic ozonation system. It is suggested that WO3 is a promising material for the photocatalytic ozonation system due to its activity in the wavelength range of solar energy.
| Original language | English |
|---|---|
| Pages (from-to) | 221-229 |
| Number of pages | 9 |
| Journal | Chemical Engineering Journal |
| Volume | 264 |
| DOIs | |
| Publication status | Published - Mar 5 2015 |
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Keywords
- Advanced oxidation processes (AOPs)
- Oxalic acid
- Photocatalytic ozonation
- Visible-light-responsive photocatalyst
- Water treatment
ASJC Scopus subject areas
- Chemical Engineering(all)
- Chemistry(all)
- Industrial and Manufacturing Engineering
- Environmental Chemistry
Cite this
Water treatment efficacy of various metal oxide semiconductors for photocatalytic ozonation under UV and visible light irradiation. / Mano, Takayuki; Nishimoto, Shunsuke; Kameshima, Yoshikazu; Miyake, Michihiro.
In: Chemical Engineering Journal, Vol. 264, 05.03.2015, p. 221-229.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Water treatment efficacy of various metal oxide semiconductors for photocatalytic ozonation under UV and visible light irradiation
AU - Mano, Takayuki
AU - Nishimoto, Shunsuke
AU - Kameshima, Yoshikazu
AU - Miyake, Michihiro
PY - 2015/3/5
Y1 - 2015/3/5
N2 - We have investigated a photocatalytic ozonation system of seven metal oxide semiconductors, TiO2 (P25), Nb2O5, SnO2, WO3, Fe2O3, In2O3, and BiVO4, under visible light both with and without UV irradiation for their efficacy in removing total organic carbon (TOC) from aqueous oxalic acid solution for water treatment. The investigation revealed that all the metal oxide samples functioned as photocatalysts for the photocatalytic ozonation system. TiO2 exhibited the highest activity under UV irradiation, and also exhibited a little activity under visible light irradiation. WO3, Fe2O3, In2O3, and BiVO4 functioned as visible-light-responsive photocatalysts and Fe2O3, In2O3, and BiVO4 were newly identified as active photocatalysts under visible light irradiation for the photocatalytic ozonation system. It is suggested that WO3 is a promising material for the photocatalytic ozonation system due to its activity in the wavelength range of solar energy.
AB - We have investigated a photocatalytic ozonation system of seven metal oxide semiconductors, TiO2 (P25), Nb2O5, SnO2, WO3, Fe2O3, In2O3, and BiVO4, under visible light both with and without UV irradiation for their efficacy in removing total organic carbon (TOC) from aqueous oxalic acid solution for water treatment. The investigation revealed that all the metal oxide samples functioned as photocatalysts for the photocatalytic ozonation system. TiO2 exhibited the highest activity under UV irradiation, and also exhibited a little activity under visible light irradiation. WO3, Fe2O3, In2O3, and BiVO4 functioned as visible-light-responsive photocatalysts and Fe2O3, In2O3, and BiVO4 were newly identified as active photocatalysts under visible light irradiation for the photocatalytic ozonation system. It is suggested that WO3 is a promising material for the photocatalytic ozonation system due to its activity in the wavelength range of solar energy.
KW - Advanced oxidation processes (AOPs)
KW - Oxalic acid
KW - Photocatalytic ozonation
KW - Visible-light-responsive photocatalyst
KW - Water treatment
UR - http://www.scopus.com/inward/record.url?scp=84918800595&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84918800595&partnerID=8YFLogxK
U2 - 10.1016/j.cej.2014.11.088
DO - 10.1016/j.cej.2014.11.088
M3 - Article
AN - SCOPUS:84918800595
VL - 264
SP - 221
EP - 229
JO - Chemical Engineering Journal
JF - Chemical Engineering Journal
SN - 1385-8947
ER -