The effects of hydrothermal temperature on structural and photocatalytic properties of ordered large pore size TiO 2-SiO 2 mesostructured composite

Babak Mazinani, Ali Beitollahi, Shahidan Radiman, Abdul Kadir Masrom, Suhaina Mohd Ibrahim, Jafar Javadpour, Farina M D Jamil

Research output: Contribution to journalArticle

18 Citations (Scopus)

Abstract

Ordered TiO 2-SiO 2 mesoporous materials with BJH pore diameters in the range from 12 to 15 nm were synthesized by a one-step hydrothermal synthesis method. In this route, tetraethoxysilane (TEOS) and titanium tetraisopropoxide (TTIP) in a low pH solution were used as SiO 2 and TiO 2 precursor, respectively with P123 as a template and hexane as a micelle expander in the presence of NH 4F. In this work, we show the effect of different hydrothermal temperatures (70°C and 130°C) on pore structure and photocatalytic efficiency of the materials prepared. The synthesized materials were characterized by small-angle X-ray scattering (SAXS), N 2 adsorption-desorption experiments, X ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS) and field emission scanning electron microscopy (FESEM). The method could produce ordered mesoporous structure with uniform pore size of 12-15 nm and high specific surface areas S BET up to 431 m 2/g. The photocatalytic activity of the samples was evaluated by degradation of MB under UV light irradiation and results showed these mesostructure materials have much higher photocatalytic efficiency in comparison with commercial P25 titania. The results also show that for materials synthesized using higher hydrothermal temperature (130°C) resulting in increased in photocatalytic activity due to higher formation of anatase phase and more open channels by comparison with lower hydrothermal treatment (70°C).

Original languageEnglish
Pages (from-to)72-76
Number of pages5
JournalJournal of Alloys and Compounds
Volume519
DOIs
Publication statusPublished - 5 Apr 2012

Fingerprint

Pore size
Composite materials
Titanium
Temperature
Mesoporous materials
Hydrothermal synthesis
Micelles
Hexanes
Pore structure
Hexane
X ray scattering
Specific surface area
Ultraviolet radiation
Field emission
Titanium dioxide
Desorption
X ray photoelectron spectroscopy
Irradiation
Adsorption
X ray diffraction

Keywords

  • Chemical synthesis
  • Mesoporous materials
  • Oxide materials
  • Photocatalytic properties

ASJC Scopus subject areas

  • Mechanical Engineering
  • Mechanics of Materials
  • Materials Chemistry
  • Metals and Alloys

Cite this

The effects of hydrothermal temperature on structural and photocatalytic properties of ordered large pore size TiO 2-SiO 2 mesostructured composite. / Mazinani, Babak; Beitollahi, Ali; Radiman, Shahidan; Masrom, Abdul Kadir; Ibrahim, Suhaina Mohd; Javadpour, Jafar; Jamil, Farina M D.

In: Journal of Alloys and Compounds, Vol. 519, 05.04.2012, p. 72-76.

Research output: Contribution to journalArticle

Mazinani, Babak ; Beitollahi, Ali ; Radiman, Shahidan ; Masrom, Abdul Kadir ; Ibrahim, Suhaina Mohd ; Javadpour, Jafar ; Jamil, Farina M D. / The effects of hydrothermal temperature on structural and photocatalytic properties of ordered large pore size TiO 2-SiO 2 mesostructured composite. In: Journal of Alloys and Compounds. 2012 ; Vol. 519. pp. 72-76.
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