Highly ordered Ti-SBA-15: Efficient H{sub 2} adsorbent and photocatalyst for eco-toxic dye degradation

Journal Article · Tue Jun 15 04:00:00 EDT 2010 · Journal of Solid State Chemistry

DOI:https://doi.org/10.1016/j.jssc.2010.04.015· OSTI ID:21421518

Das, Swapan K; Bhunia, Manas K ^[1]; Bhaumik, Asim ^[1]

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1. Department of Materials Science, Indian Association for the Cultivation of Science, 2A and B Raja S.C. Mullick Road, Jadavpur, Kolkata 700 032 (India)

Highly ordered 2D-hexagonal mesoporous titanium silicate Ti-SBA-15 materials (space group p6mm) have been synthesized hydrothermally in acidic medium employing amphiphilic tri-block copolymer, Pluronic F127 as structure directing agent. Samples are characterized by powder X-ray diffraction, transmission electron microscopy, scanning electron microscopy, FT IR spectroscopy, UV-visible diffuse reflectance measurements, N{sub 2} adsorption/desorption and TG-DTA analysis. XRD and TEM results suggested the presence of highly ordered mesophase with hexagonal pore arrangements. BET surface area for Ti-SBA-15 (924 m{sup 2} g{sup -1}) is considerably higher than the pure silica SBA-15 (611 m{sup 2} g{sup -1}) prepared following the same synthetic route. UV-visible and FT-IR studies suggested the incorporation of mostly tetrahedral titanium (IV) species, along with some six-coordinated sites in the silicate network. This material shows very good H{sub 2} adsorption capacity at higher pressure and excellent catalytic activity in the photocatalytic degradation of ecologically abundant dye methylene blue. - Graphical abstract: Highly ordered 2D-hexagonal mesoporous Ti-SBA-15 materials are synthesized hydrothermally, which show high H{sub 2} adsorption capacity and excellent activity in the photocatalytic degradation of ecologically abundant dye methylene blue.

• OSTI ID: 21421518
• Journal Information: Journal of Solid State Chemistry, Journal Name: Journal of Solid State Chemistry Journal Issue: 6 Vol. 183; ISSN 0022-4596; ISSN JSSCBI
• Country of Publication: United States
• Language: English

Related Subjects

77 NANOSCIENCE AND NANOTECHNOLOGY
ADSORPTION
AMINES
ANTI-INFECTIVE AGENTS
ANTIMICROBIAL AGENTS
AZINES
CATALYSIS
CHLORIDES
CHLORINE COMPOUNDS
COHERENT SCATTERING
COPOLYMERS
DIFFERENTIAL THERMAL ANALYSIS
DIFFRACTION
DRUGS
DYES
ELECTRON MICROSCOPY
ELEMENTS
HALIDES
HALOGEN COMPOUNDS
HETEROCYCLIC COMPOUNDS
HYDROGEN
HYDROTHERMAL SYNTHESIS
INFRARED SPECTRA
METHYLENE BLUE
MICROSCOPY
MINERALS
NANOSTRUCTURES
NONMETALS
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
ORGANIC POLYMERS
ORGANIC SULFUR COMPOUNDS
OXIDE MINERALS
OXYGEN COMPOUNDS
PHENOTHIAZINES
PHOTOCATALYSIS
POLYMERS
SCANNING ELECTRON MICROSCOPY
SCATTERING
SILICA
SILICATES
SILICON COMPOUNDS
SORPTION
SPACE GROUPS
SPECTRA
SYMMETRY GROUPS
SYNTHESIS
THERMAL ANALYSIS
TITANIUM COMPOUNDS
TITANIUM SILICATES
TRANSITION ELEMENT COMPOUNDS
TRANSMISSION ELECTRON MICROSCOPY
X-RAY DIFFRACTION