Photocatalytic activity of kaolinite

Daria Kibanova; Martin Trejo; Hugo Destaillats; Javiera Cervini-Silva

doi:10.1016/j.catcom.2010.10.029

Photocatalytic activity of kaolinite

Daria Kibanova, Martin Trejo, Hugo Destaillats, Javiera Cervini-Silva

Escuela Superior de Ingeniería Química e Industrias Extractivas (ESIQIE)

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

21 Scopus citations

Abstract

The photocatalytic activity of commercial kaolinite (KGa-1b) was evaluated for the degradation of methylene blue (MB) in aqueous suspension and of toluene in the gas phase. An enhanced photolysis of MB in the presence of kaolinite was detected, albeit at a slower rate than in the presence of the same mass of commercial TiO₂ P25. Toluene removal under realistic ambient concentrations was catalyzed by both KGa-1b and P25; however, on a TiO ₂ content normalized basis, the clay mineral showed a higher photocatalytic rate. In the latter case, toluene degradation was found to be coupled to the presence of kaolinite surfaces, and not proportional to TiO ₂ content.

Original language	English
Pages (from-to)	698-702
Number of pages	5
Journal	Catalysis Communications
Volume	12
Issue number	8
DOIs	https://doi.org/10.1016/j.catcom.2010.10.029
State	Published - 31 Mar 2011

Keywords

Degradation
Kaolinite
Methylene blue
Photocatalysis
Photolysis
Toluene

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10.1016/j.catcom.2010.10.029

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@article{31a074cc6a524463ac3ece2af7b63601,

title = "Photocatalytic activity of kaolinite",

abstract = "The photocatalytic activity of commercial kaolinite (KGa-1b) was evaluated for the degradation of methylene blue (MB) in aqueous suspension and of toluene in the gas phase. An enhanced photolysis of MB in the presence of kaolinite was detected, albeit at a slower rate than in the presence of the same mass of commercial TiO2 P25. Toluene removal under realistic ambient concentrations was catalyzed by both KGa-1b and P25; however, on a TiO 2 content normalized basis, the clay mineral showed a higher photocatalytic rate. In the latter case, toluene degradation was found to be coupled to the presence of kaolinite surfaces, and not proportional to TiO 2 content.",

keywords = "Degradation, Kaolinite, Methylene blue, Photocatalysis, Photolysis, Toluene",

author = "Daria Kibanova and Martin Trejo and Hugo Destaillats and Javiera Cervini-Silva",

note = "Funding Information: The authors thank Mar{\'i}a del Roc{\'i}o Galindo Ortega (Universidad Aut{\'o}noma Metropolitana Unidad Cuajimalpa) and Pilar Fern{\'a}ndez-Lomel{\'i}n (Instituto de Geograf{\'i}a, UNAM) for technical assistance. This project was supported in part by Universidad Aut{\'o}noma Metropolitana and ECACORE 2020 ( SEMARNAT CONACYT 23496 ).",

year = "2011",

month = mar,

day = "31",

doi = "10.1016/j.catcom.2010.10.029",

language = "Ingl{\'e}s",

volume = "12",

pages = "698--702",

journal = "Catalysis Communications",

issn = "1566-7367",

number = "8",

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TY - JOUR

T1 - Photocatalytic activity of kaolinite

AU - Kibanova, Daria

AU - Trejo, Martin

AU - Destaillats, Hugo

AU - Cervini-Silva, Javiera

N1 - Funding Information: The authors thank María del Rocío Galindo Ortega (Universidad Autónoma Metropolitana Unidad Cuajimalpa) and Pilar Fernández-Lomelín (Instituto de Geografía, UNAM) for technical assistance. This project was supported in part by Universidad Autónoma Metropolitana and ECACORE 2020 ( SEMARNAT CONACYT 23496 ).

PY - 2011/3/31

Y1 - 2011/3/31

N2 - The photocatalytic activity of commercial kaolinite (KGa-1b) was evaluated for the degradation of methylene blue (MB) in aqueous suspension and of toluene in the gas phase. An enhanced photolysis of MB in the presence of kaolinite was detected, albeit at a slower rate than in the presence of the same mass of commercial TiO2 P25. Toluene removal under realistic ambient concentrations was catalyzed by both KGa-1b and P25; however, on a TiO 2 content normalized basis, the clay mineral showed a higher photocatalytic rate. In the latter case, toluene degradation was found to be coupled to the presence of kaolinite surfaces, and not proportional to TiO 2 content.

AB - The photocatalytic activity of commercial kaolinite (KGa-1b) was evaluated for the degradation of methylene blue (MB) in aqueous suspension and of toluene in the gas phase. An enhanced photolysis of MB in the presence of kaolinite was detected, albeit at a slower rate than in the presence of the same mass of commercial TiO2 P25. Toluene removal under realistic ambient concentrations was catalyzed by both KGa-1b and P25; however, on a TiO 2 content normalized basis, the clay mineral showed a higher photocatalytic rate. In the latter case, toluene degradation was found to be coupled to the presence of kaolinite surfaces, and not proportional to TiO 2 content.

KW - Degradation

KW - Kaolinite

KW - Methylene blue

KW - Photocatalysis

KW - Photolysis

KW - Toluene

UR - http://www.scopus.com/inward/record.url?scp=78751642054&partnerID=8YFLogxK

U2 - 10.1016/j.catcom.2010.10.029

DO - 10.1016/j.catcom.2010.10.029

M3 - Artículo

SN - 1566-7367

VL - 12

SP - 698

EP - 702

JO - Catalysis Communications

JF - Catalysis Communications

IS - 8

ER -

Photocatalytic activity of kaolinite

Abstract

Keywords

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