Preparation of TiO2/SiO2 hollow spheres and their activity in methylene blue photodecomposition

Hong Rok Kim; Ko Yeol Choi; Yong Gun Shul

doi:10.1007/s11814-007-0009-7

Preparation of TiO₂/SiO₂ hollow spheres and their activity in methylene blue photodecomposition

Hong Rok Kim, Ko Yeol Choi, Yong Gun Shul

Department of Chemical and Biomolecular Engineering

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

17 Citations (Scopus)

Abstract

PSA [poly-(styrene-methyl acrylic acid)] latex particle has been taken into account as template material in SiO₂ hollow spheres preparation. TiO₂-doped SiO₂ hollow spheres were obtained by using the appropriate amount of Ti(SO₄)₂ solution on SiO₂ hollow spheres. The photodecomposition of the MB (methylene blue) was evaluated on these TiO₂-doped SiO₂ hollow spheres under UV light irradiation. The catalyst samples were characterized by XRD, UV-DRS, SEM and BET. A TiO₂-doped SiO₂ hollow sphere has shown higher surface area in comparison with pure TiO₂ hollow spheres. The 40 wt% TiO₂-doped SiO₂ hollow sphere has been found as the most active catalyst compared with the others in the process of photodecomposition of MB (methylene blue). The BET surface area of this sample was found to be 377.6 m²g^-1. The photodegradation rate of MB using the TiO ₂-doped SiO₂ catalyst was much higher than that of pure TiO₂ hollow spheres.

Original language	English
Pages (from-to)	596-599
Number of pages	4
Journal	Korean Journal of Chemical Engineering
Volume	24
Issue number	3
DOIs	https://doi.org/10.1007/s11814-007-0009-7
Publication status	Published - 2007 May 1

All Science Journal Classification (ASJC) codes

Chemistry(all)
Chemical Engineering(all)

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10.1007/s11814-007-0009-7

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title = "Preparation of TiO2/SiO2 hollow spheres and their activity in methylene blue photodecomposition",

abstract = "PSA [poly-(styrene-methyl acrylic acid)] latex particle has been taken into account as template material in SiO2 hollow spheres preparation. TiO2-doped SiO2 hollow spheres were obtained by using the appropriate amount of Ti(SO4)2 solution on SiO2 hollow spheres. The photodecomposition of the MB (methylene blue) was evaluated on these TiO2-doped SiO2 hollow spheres under UV light irradiation. The catalyst samples were characterized by XRD, UV-DRS, SEM and BET. A TiO2-doped SiO2 hollow sphere has shown higher surface area in comparison with pure TiO2 hollow spheres. The 40 wt% TiO2-doped SiO2 hollow sphere has been found as the most active catalyst compared with the others in the process of photodecomposition of MB (methylene blue). The BET surface area of this sample was found to be 377.6 m2g-1. The photodegradation rate of MB using the TiO 2-doped SiO2 catalyst was much higher than that of pure TiO2 hollow spheres.",

author = "Kim, {Hong Rok} and Choi, {Ko Yeol} and Shul, {Yong Gun}",

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T1 - Preparation of TiO2/SiO2 hollow spheres and their activity in methylene blue photodecomposition

AU - Kim, Hong Rok

AU - Choi, Ko Yeol

AU - Shul, Yong Gun

PY - 2007/5/1

Y1 - 2007/5/1

N2 - PSA [poly-(styrene-methyl acrylic acid)] latex particle has been taken into account as template material in SiO2 hollow spheres preparation. TiO2-doped SiO2 hollow spheres were obtained by using the appropriate amount of Ti(SO4)2 solution on SiO2 hollow spheres. The photodecomposition of the MB (methylene blue) was evaluated on these TiO2-doped SiO2 hollow spheres under UV light irradiation. The catalyst samples were characterized by XRD, UV-DRS, SEM and BET. A TiO2-doped SiO2 hollow sphere has shown higher surface area in comparison with pure TiO2 hollow spheres. The 40 wt% TiO2-doped SiO2 hollow sphere has been found as the most active catalyst compared with the others in the process of photodecomposition of MB (methylene blue). The BET surface area of this sample was found to be 377.6 m2g-1. The photodegradation rate of MB using the TiO 2-doped SiO2 catalyst was much higher than that of pure TiO2 hollow spheres.

AB - PSA [poly-(styrene-methyl acrylic acid)] latex particle has been taken into account as template material in SiO2 hollow spheres preparation. TiO2-doped SiO2 hollow spheres were obtained by using the appropriate amount of Ti(SO4)2 solution on SiO2 hollow spheres. The photodecomposition of the MB (methylene blue) was evaluated on these TiO2-doped SiO2 hollow spheres under UV light irradiation. The catalyst samples were characterized by XRD, UV-DRS, SEM and BET. A TiO2-doped SiO2 hollow sphere has shown higher surface area in comparison with pure TiO2 hollow spheres. The 40 wt% TiO2-doped SiO2 hollow sphere has been found as the most active catalyst compared with the others in the process of photodecomposition of MB (methylene blue). The BET surface area of this sample was found to be 377.6 m2g-1. The photodegradation rate of MB using the TiO 2-doped SiO2 catalyst was much higher than that of pure TiO2 hollow spheres.

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Preparation of TiO₂/SiO₂ hollow spheres and their activity in methylene blue photodecomposition

Abstract

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