Cited by 198TiO2 Photocatalysis and Solar CellsAdvanced Photocatalysis TechniquesAdvanced oxidation water treatment

Degradation of methyl orange by composite photocatalysts nano-TiO2 immobilized on activated carbons of different porosities

Wang, Xiaojing, Liu, Yafei, Hu, Zhonghua, Chen, Yujuan, Liu, Wei, Zhao, Guohua·2009·Journal of Hazardous Materials

Abstract

Composite photocatalysts TiO(2) immobilized on granular activated carbons with different porosities (TiO(2)/AC) were prepared by a novel approach, dip-hydrothermal method using peroxotitanate as precursor. The TiO(2)/AC composites were characterized by X-ray diffraction, scanning electron microscopy, X-ray photoelectron spectroscopy and the nitrogen absorption. Their photocatalytic activity was evaluated by degradation of methyl orange (MO). The results showed that nano-TiO(2) particles of anatase type were well deposited on the activated carbon surface. The porosity of activated carbon had significant influence on the adsorption, the amount of TiO(2) deposited on the external surface of AC and the activity of composite photocatalysts. The composite TiO(2)/AC made from proper mesoporosity AC exhibited higher catalytic activity than the mixture of powdered TiO(2) with AC. Furthermore, the mechanism of synergistic effect of AC adsorption and TiO(2) photocatalysis was discussed.

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Crossref · 10.1016/j.jhazmat.2009.04.058

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37 of 37 references verified0 citation errors · 0 not checkable

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  • Activated carbon adsorbs pollutants and then releases them onto the surface of TiO2, delivering a higher concentration of pollutants around the TiO2 than that available in the bulk solution and culminating in an enhanced degradation rate of the pollutants.

    “Furthermore, activated carbon adsorbs pollutants and then releases them onto the surface of TiO 2 thus delivering a higher concentration of pollutants around the TiO 2 than that available in the bulk solution culminating in an enhanced degradation rate of the pollutants;”
  • Activated carbon is a porous, amorphous solid carbon material derived mainly from carbonaceous or plant-based (lignocellulosic) materials and can be used as a support for TiO2.

    “Activated carbon (AC), also termed active carbon, activated charcoal, or activated coal, is a porous, amorphous solid carbon material derived mainly from carbonaceous or plantbased (lignocellulosic) materials such as coconut shell, [113][114][115][116][117][118][119] activated charcoal, 120 sawdust of Tabebuia pentaphyla wood, 121-124 pine sawdust, 125 beech sawdust, 126 peach stones, 127 almond”

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Authors
Wang, X., Liu, Y., Hu, Z., Chen, Y., Liu, W., & Zhao, G.
Affiliations
Tongji University (CN)
Corresponding author
Hu, Zhonghua
Venue
Journal of Hazardous Materials
Publisher
Elsevier BV
Published
2009-09
Volume
169
Issue
1-3
Pages
1061-1067
ISSN
0304-3894 (ISSN-L)
OpenAlex
W2015600382
Cited by
198
References
38
Citations by year
2026: 3 · 2025: 7 · 2024: 7 · 2023: 5 · 2022: 9 · 2021: 17 · 2020: 12 · 2019: 9 · 2018: 13 · 2017: 11 · 2016: 18 · 2015: 12 · 2014: 22 · 2013: 14 · 2012: 17
FWCI
6.08
Type
journal article
Language
en
Open access
closed
Locations
  • Journal of Hazardous Materials (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Physical Sciences › Energy › Renewable Energy, Sustainability and the Environment › TiO2 Photocatalysis and Solar Cells
  • Physical Sciences › Energy › Renewable Energy, Sustainability and the Environment › Advanced Photocatalysis Techniques
  • Physical Sciences › Environmental Science › Water Science and Technology › Advanced oxidation water treatment
Keywords
methyl orange degradation, mesoporous activated carbon, anatase TiO2, dye adsorption, wastewater treatment
MeSH terms
Adsorption, Azo Compounds, Catalysis, Charcoal, Titanium, Porosity, Photochemical Processes

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