Synthesis of mesoporous TiO2 in aqueous alcoholic medium and evaluation of its photocatalytic activity

L. Kumaresan; A. Prabhu; M. Palanichamy; V. Murugesan

doi:10.1016/j.matchemphys.2010.10.036

Synthesis of mesoporous TiO₂ in aqueous alcoholic medium and evaluation of its photocatalytic activity

L. Kumaresan, A. Prabhu, M. Palanichamy, V. Murugesan

Anna University

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

25 Scopus citations

Abstract

Mesoporous TiO₂ was synthesized using triblock copolymer as the structure directing template in ethanol/water, isopropanol/water or 1-butanol/water medium by sol-gel method. The presence of intense peak at low angle in the XRD patterns confirmed the orderly arrangement of mesopores in the material. Among the three different alcohols, ethanol had influenced better in controlling the particle size than others. The enhanced specific surface area also revealed the formation of mesopores. Aggregates of particles were clearly seen in the TEM images and the size of the particles was approximately 10 nm. The photocatalytic activity of mesoporous TiO₂ was evaluated using aqueous alachlor as a model pollutant. The activity of mesoporous TiO ₂ synthesized in ethanol/water mole ratio of 50 was higher than other mesoporous TiO₂ and commercial TiO₂ (Degussa P-25). The transport of excited electrons from one particle to its neighboring nanoparticles of mesoporous TiO₂ is suggested to be the cause for enhanced photocatalytic activity.

Original language	British English
Pages (from-to)	445-452
Number of pages	8
Journal	Materials Chemistry and Physics
Volume	126
Issue number	1-2
DOIs	https://doi.org/10.1016/j.matchemphys.2010.10.036
State	Published - 15 Mar 2011

Keywords

Alachlor
Mesoporous TiO
Photocatalysis
Sol-gel method

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title = "Synthesis of mesoporous TiO2 in aqueous alcoholic medium and evaluation of its photocatalytic activity",

abstract = "Mesoporous TiO2 was synthesized using triblock copolymer as the structure directing template in ethanol/water, isopropanol/water or 1-butanol/water medium by sol-gel method. The presence of intense peak at low angle in the XRD patterns confirmed the orderly arrangement of mesopores in the material. Among the three different alcohols, ethanol had influenced better in controlling the particle size than others. The enhanced specific surface area also revealed the formation of mesopores. Aggregates of particles were clearly seen in the TEM images and the size of the particles was approximately 10 nm. The photocatalytic activity of mesoporous TiO2 was evaluated using aqueous alachlor as a model pollutant. The activity of mesoporous TiO 2 synthesized in ethanol/water mole ratio of 50 was higher than other mesoporous TiO2 and commercial TiO2 (Degussa P-25). The transport of excited electrons from one particle to its neighboring nanoparticles of mesoporous TiO2 is suggested to be the cause for enhanced photocatalytic activity.",

keywords = "Alachlor, Mesoporous TiO, Photocatalysis, Sol-gel method",

author = "L. Kumaresan and A. Prabhu and M. Palanichamy and V. Murugesan",

note = "Funding Information: The authors gratefully acknowledge the University Grants Commission (UGC), New Delhi , for liberal funding in the second phase of the Centre with Potential for Excellence in Environmental Sciences (CPEES) in Anna University. The authors are also thankful to UGC for the sanction of funds under special assistance programme under DRS phase II and DST under FIST programme for creating the infrastructural facilities. One of the authors, L. Kumaresan is thankful to CSIR, New Delhi, for the award of a senior research fellowship (SRF).",

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N1 - Funding Information: The authors gratefully acknowledge the University Grants Commission (UGC), New Delhi , for liberal funding in the second phase of the Centre with Potential for Excellence in Environmental Sciences (CPEES) in Anna University. The authors are also thankful to UGC for the sanction of funds under special assistance programme under DRS phase II and DST under FIST programme for creating the infrastructural facilities. One of the authors, L. Kumaresan is thankful to CSIR, New Delhi, for the award of a senior research fellowship (SRF).

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N2 - Mesoporous TiO2 was synthesized using triblock copolymer as the structure directing template in ethanol/water, isopropanol/water or 1-butanol/water medium by sol-gel method. The presence of intense peak at low angle in the XRD patterns confirmed the orderly arrangement of mesopores in the material. Among the three different alcohols, ethanol had influenced better in controlling the particle size than others. The enhanced specific surface area also revealed the formation of mesopores. Aggregates of particles were clearly seen in the TEM images and the size of the particles was approximately 10 nm. The photocatalytic activity of mesoporous TiO2 was evaluated using aqueous alachlor as a model pollutant. The activity of mesoporous TiO 2 synthesized in ethanol/water mole ratio of 50 was higher than other mesoporous TiO2 and commercial TiO2 (Degussa P-25). The transport of excited electrons from one particle to its neighboring nanoparticles of mesoporous TiO2 is suggested to be the cause for enhanced photocatalytic activity.

AB - Mesoporous TiO2 was synthesized using triblock copolymer as the structure directing template in ethanol/water, isopropanol/water or 1-butanol/water medium by sol-gel method. The presence of intense peak at low angle in the XRD patterns confirmed the orderly arrangement of mesopores in the material. Among the three different alcohols, ethanol had influenced better in controlling the particle size than others. The enhanced specific surface area also revealed the formation of mesopores. Aggregates of particles were clearly seen in the TEM images and the size of the particles was approximately 10 nm. The photocatalytic activity of mesoporous TiO2 was evaluated using aqueous alachlor as a model pollutant. The activity of mesoporous TiO 2 synthesized in ethanol/water mole ratio of 50 was higher than other mesoporous TiO2 and commercial TiO2 (Degussa P-25). The transport of excited electrons from one particle to its neighboring nanoparticles of mesoporous TiO2 is suggested to be the cause for enhanced photocatalytic activity.

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Synthesis of mesoporous TiO₂ in aqueous alcoholic medium and evaluation of its photocatalytic activity

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Keywords

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