Synthesis, characterization and photocatalytic properties of tungsten-doped hydrothermal TiO2

J. A. León-Ramos; D. Kibanova; P. Santiago-Jacinto; Y. Mar-Santiago; M. Trejo-Valdez

doi:10.1007/s10971-010-2322-6

Synthesis, characterization and photocatalytic properties of tungsten-doped hydrothermal TiO₂

J. A. León-Ramos, D. Kibanova, P. Santiago-Jacinto, Y. Mar-Santiago, M. Trejo-Valdez

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Abstract

Crystalline anatase phase TiO₂ with photocatalytic properties was obtained through a sol-gel low-temperature hydrothermal process. TiO ₂ samples doped with tungsten oxide were also obtained by using this synthetic approach. The photocatalytic oxidation of methylene blue in water was monitored to study the influence of the tungsten doping degree on the photocatalytic degradation performance of TiO₂. The degradation rate constant was further increased by adjusting the tungsten doping degree of hydrothermal TiO₂. Also, a much faster photodegradation of methylene blue was achieved using tungsten doped samples baked at 450°C. The results were compared with those obtained with Degussa P25 used as photocatalyst. The structure and optical properties of tungsten-doped TiO₂ were studied by SEM, X-ray diffraction, UV-vis and DRIFT spectroscopy techniques.

Original language	English
Pages (from-to)	43-50
Number of pages	8
Journal	Journal of Sol-Gel Science and Technology
Volume	57
Issue number	1
DOIs	https://doi.org/10.1007/s10971-010-2322-6
State	Published - Jan 2011
Externally published	Yes

Keywords

Hydrothermal synthesis
Photocatalysis
Sol-gel
TiO
Tungsten-doped

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10.1007/s10971-010-2322-6

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title = "Synthesis, characterization and photocatalytic properties of tungsten-doped hydrothermal TiO2",

abstract = "Crystalline anatase phase TiO2 with photocatalytic properties was obtained through a sol-gel low-temperature hydrothermal process. TiO 2 samples doped with tungsten oxide were also obtained by using this synthetic approach. The photocatalytic oxidation of methylene blue in water was monitored to study the influence of the tungsten doping degree on the photocatalytic degradation performance of TiO2. The degradation rate constant was further increased by adjusting the tungsten doping degree of hydrothermal TiO2. Also, a much faster photodegradation of methylene blue was achieved using tungsten doped samples baked at 450°C. The results were compared with those obtained with Degussa P25 used as photocatalyst. The structure and optical properties of tungsten-doped TiO2 were studied by SEM, X-ray diffraction, UV-vis and DRIFT spectroscopy techniques.",

keywords = "Hydrothermal synthesis, Photocatalysis, Sol-gel, TiO, Tungsten-doped",

author = "Le{\'o}n-Ramos, {J. A.} and D. Kibanova and P. Santiago-Jacinto and Y. Mar-Santiago and M. Trejo-Valdez",

note = "Funding Information: Acknowledgments The authors express gratitude to R. Hern{\'a}ndez Reyes, M. Aguilar Franco (IF-UNAM) and Iv{\'a}n Puente Lee (FQ-UNAM, SEM) for technical support. This project was supported in part by the CONACYT-M{\'e}xico through grants No. 80024 and 102919 and by the IPN through grant No. 20100836. The authors are also thankful to Sergio O. Flores Valle facilities at the Laboratorio de Cat{\'a}lisis y Materiales, ESIQIE-IPN.",

year = "2011",

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doi = "10.1007/s10971-010-2322-6",

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AU - León-Ramos, J. A.

AU - Kibanova, D.

AU - Santiago-Jacinto, P.

AU - Mar-Santiago, Y.

AU - Trejo-Valdez, M.

N1 - Funding Information: Acknowledgments The authors express gratitude to R. Hernández Reyes, M. Aguilar Franco (IF-UNAM) and Iván Puente Lee (FQ-UNAM, SEM) for technical support. This project was supported in part by the CONACYT-México through grants No. 80024 and 102919 and by the IPN through grant No. 20100836. The authors are also thankful to Sergio O. Flores Valle facilities at the Laboratorio de Catálisis y Materiales, ESIQIE-IPN.

PY - 2011/1

Y1 - 2011/1

N2 - Crystalline anatase phase TiO2 with photocatalytic properties was obtained through a sol-gel low-temperature hydrothermal process. TiO 2 samples doped with tungsten oxide were also obtained by using this synthetic approach. The photocatalytic oxidation of methylene blue in water was monitored to study the influence of the tungsten doping degree on the photocatalytic degradation performance of TiO2. The degradation rate constant was further increased by adjusting the tungsten doping degree of hydrothermal TiO2. Also, a much faster photodegradation of methylene blue was achieved using tungsten doped samples baked at 450°C. The results were compared with those obtained with Degussa P25 used as photocatalyst. The structure and optical properties of tungsten-doped TiO2 were studied by SEM, X-ray diffraction, UV-vis and DRIFT spectroscopy techniques.

AB - Crystalline anatase phase TiO2 with photocatalytic properties was obtained through a sol-gel low-temperature hydrothermal process. TiO 2 samples doped with tungsten oxide were also obtained by using this synthetic approach. The photocatalytic oxidation of methylene blue in water was monitored to study the influence of the tungsten doping degree on the photocatalytic degradation performance of TiO2. The degradation rate constant was further increased by adjusting the tungsten doping degree of hydrothermal TiO2. Also, a much faster photodegradation of methylene blue was achieved using tungsten doped samples baked at 450°C. The results were compared with those obtained with Degussa P25 used as photocatalyst. The structure and optical properties of tungsten-doped TiO2 were studied by SEM, X-ray diffraction, UV-vis and DRIFT spectroscopy techniques.

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KW - Photocatalysis

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KW - Tungsten-doped

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JO - Journal of Sol-Gel Science and Technology

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Synthesis, characterization and photocatalytic properties of tungsten-doped hydrothermal TiO₂

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