Influence of Surface Properties of Activated Carbon on Photocatalytic Activity of TiO2 in 4-chlorophenol Degradation
Open accessAbstract
This work shows the influence of specific surface area (BET) and surface pH of different activated carbons on the photocatalytic activity of UV-irradiated TiO 2 in the 4-chlorophenol (4CP) photodegradation.Carbons were prepared from sawdust of Tabebuia Pentaphyla wood by physical activation with CO 2 and by pyrolysis under N 2 flow at temperatures from 450 up to 1000ºC during 1h Chemical activation was also performed by the impregnation of precursor with ZnCl 2 , H 3 PO 4 and KOH at different concentrations, followed by activation under N 2 flow at 450ºC by 1h.Comparison of apparent first-order rate constants between TiO 2 against TiO 2 -AC indicate that TiO 2 photoactivity is enhanced or inhibited as a function of AC properties and correlations with surface area and pH PZC were found suggesting that surface pH of carbons is the most important parameter that influences TiO 2 activity in the 4CP photodegradation.
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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”
From Sustainable hybrid photocatalysts: titania immobilized on carbon materials derived from renewable and biodegradable resources (2016) · cites this paper as [121]
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- Authors
- Matos, J., Chovelon, J.-M., Cordero, T., & Ferronato, C.
- Affiliations
- Instituto Venezolano de Investigaciones Científicas (VE)
- Centre National de la Recherche Scientifique (FR)
- Venue
- The Open Environmental Engineering Journal
- Publisher
- Bentham Science Publishers Ltd.
- Published
- 2009-05-29
- Volume
- 2
- Issue
- 1
- Pages
- 21-29
- ISSN
- 1874-8295 (ISSN-L)
- OpenAlex
- W2087443971
- Cited by
- 34
- References
- 20
- Citations by year
- 2026: 2 · 2025: 1 · 2021: 3 · 2020: 2 · 2019: 1 · 2017: 2 · 2016: 5 · 2015: 3 · 2014: 6 · 2013: 3 · 2012: 4
- FWCI
- 0.94
- Type
- journal article
- Language
- en
- Open access
- bronze
- doi.org
- Locations
- The Open Environmental Engineering Journal (publishedVersion)
- Funders
- Fondo Nacional de Ciencia Tecnología e Innovación
- Topics
- Physical Sciences › Energy › Renewable Energy, Sustainability and the Environment › TiO2 Photocatalysis and Solar Cells
- Physical Sciences › Environmental Science › Water Science and Technology › Advanced oxidation water treatment
- Physical Sciences › Energy › Renewable Energy, Sustainability and the Environment › Advanced Photocatalysis Techniques
- Keywords
- activated carbon, TiO2 photocatalysis, 4-chlorophenol degradation, surface pH, specific surface area, point of zero charge, physical activation, chemical activation, pyrolysis temperature, UV irradiation, chlorophenol removal
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