Preparation and photocatalytic properties of nanometer-sized magnetic TiO 2/SiO 2/CoFe 2O 4Composites

Hansheng Li; Yaping Zhang; Qin Wu; Xitao Wang; Changhao Liu

doi:10.1166/jnn.2011.4995

Preparation and photocatalytic properties of nanometer-sized magnetic TiO ₂/SiO ₂/CoFe ₂O ₄Composites

Hansheng Li^*, Yaping Zhang, Qin Wu, Xitao Wang, Changhao Liu

^*Corresponding author for this work

Tianjin University

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

5 Citations (Scopus)

Abstract

Magnetic TiO ₂/SiO ₂/CoFe ₂O ₄ nanoparticles (TiO ₂/SCFs) were prepared by a sol-gel process in a reverse microemulsion combined with solvent-thermal technique. TiO2/SCFs were characterized by Fourier transform infrared spectrometry, thermogravimetric analysis-differential scanning calorimetry, X-ray diffraction, Raman spectrometry, TEM, BET specific surface area measurement, and magnetic analysis. Structure analyses indicated that TiO ₂/SCFs presented a core-shell structure with TiO ₂ uniformly coating on SiO ₂/CoFe ₂O ₄ nanomagnets (SCFs) and typical ferromagnetic hysteresis. TiO ₂/SCFs showed larger specific surface area and better photocatalytic activities than TiO ₂and TiO ₂/CoFe ₂O ₄ photocatalysts prepared by the same method. The doping interaction between TiO ₂ and CoFe ₂O ₄ reduced thanks to the inert SiO ₂ mesosphere.

Original language	English
Pages (from-to)	10173-10181
Number of pages	9
Journal	Journal of Nanoscience and Nanotechnology
Volume	11
Issue number	11
DOIs	https://doi.org/10.1166/jnn.2011.4995
Publication status	Published - 2011

Keywords

Microemulsion
Nanomagnet
Photocatalyst
SiO /CoFe O
Sol-Gel
Solvent-Thermal
TiO

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10.1166/jnn.2011.4995

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title = "Preparation and photocatalytic properties of nanometer-sized magnetic TiO 2/SiO 2/CoFe 2O 4Composites",

abstract = "Magnetic TiO 2/SiO 2/CoFe 2O 4 nanoparticles (TiO 2/SCFs) were prepared by a sol-gel process in a reverse microemulsion combined with solvent-thermal technique. TiO2/SCFs were characterized by Fourier transform infrared spectrometry, thermogravimetric analysis-differential scanning calorimetry, X-ray diffraction, Raman spectrometry, TEM, BET specific surface area measurement, and magnetic analysis. Structure analyses indicated that TiO 2/SCFs presented a core-shell structure with TiO 2 uniformly coating on SiO 2/CoFe 2O 4 nanomagnets (SCFs) and typical ferromagnetic hysteresis. TiO 2/SCFs showed larger specific surface area and better photocatalytic activities than TiO 2and TiO 2/CoFe 2O 4 photocatalysts prepared by the same method. The doping interaction between TiO 2 and CoFe 2O 4 reduced thanks to the inert SiO 2 mesosphere.",

keywords = "Microemulsion, Nanomagnet, Photocatalyst, SiO /CoFe O, Sol-Gel, Solvent-Thermal, TiO",

author = "Hansheng Li and Yaping Zhang and Qin Wu and Xitao Wang and Changhao Liu",

year = "2011",

doi = "10.1166/jnn.2011.4995",

language = "English",

volume = "11",

pages = "10173--10181",

journal = "Journal of Nanoscience and Nanotechnology",

issn = "1533-4880",

publisher = "American Scientific Publishers",

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TY - JOUR

T1 - Preparation and photocatalytic properties of nanometer-sized magnetic TiO 2/SiO 2/CoFe 2O 4Composites

AU - Li, Hansheng

AU - Zhang, Yaping

AU - Wu, Qin

AU - Wang, Xitao

AU - Liu, Changhao

PY - 2011

Y1 - 2011

N2 - Magnetic TiO 2/SiO 2/CoFe 2O 4 nanoparticles (TiO 2/SCFs) were prepared by a sol-gel process in a reverse microemulsion combined with solvent-thermal technique. TiO2/SCFs were characterized by Fourier transform infrared spectrometry, thermogravimetric analysis-differential scanning calorimetry, X-ray diffraction, Raman spectrometry, TEM, BET specific surface area measurement, and magnetic analysis. Structure analyses indicated that TiO 2/SCFs presented a core-shell structure with TiO 2 uniformly coating on SiO 2/CoFe 2O 4 nanomagnets (SCFs) and typical ferromagnetic hysteresis. TiO 2/SCFs showed larger specific surface area and better photocatalytic activities than TiO 2and TiO 2/CoFe 2O 4 photocatalysts prepared by the same method. The doping interaction between TiO 2 and CoFe 2O 4 reduced thanks to the inert SiO 2 mesosphere.

AB - Magnetic TiO 2/SiO 2/CoFe 2O 4 nanoparticles (TiO 2/SCFs) were prepared by a sol-gel process in a reverse microemulsion combined with solvent-thermal technique. TiO2/SCFs were characterized by Fourier transform infrared spectrometry, thermogravimetric analysis-differential scanning calorimetry, X-ray diffraction, Raman spectrometry, TEM, BET specific surface area measurement, and magnetic analysis. Structure analyses indicated that TiO 2/SCFs presented a core-shell structure with TiO 2 uniformly coating on SiO 2/CoFe 2O 4 nanomagnets (SCFs) and typical ferromagnetic hysteresis. TiO 2/SCFs showed larger specific surface area and better photocatalytic activities than TiO 2and TiO 2/CoFe 2O 4 photocatalysts prepared by the same method. The doping interaction between TiO 2 and CoFe 2O 4 reduced thanks to the inert SiO 2 mesosphere.

KW - Microemulsion

KW - Nanomagnet

KW - Photocatalyst

KW - SiO /CoFe O

KW - Sol-Gel

KW - Solvent-Thermal

KW - TiO

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U2 - 10.1166/jnn.2011.4995

DO - 10.1166/jnn.2011.4995

M3 - Article

AN - SCOPUS:84863169718

SN - 1533-4880

VL - 11

SP - 10173

EP - 10181

JO - Journal of Nanoscience and Nanotechnology

JF - Journal of Nanoscience and Nanotechnology

IS - 11

ER -

Preparation and photocatalytic properties of nanometer-sized magnetic TiO ₂/SiO ₂/CoFe ₂O ₄Composites

Abstract

Keywords

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