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Characterization and evaluation of fibrous SrTiO3 prepared by hydrothermal process for the destruction of NO

Paper ID Volume ID Publish Year Pages File Format Full-Text
29329 44154 2007 6 PDF Available
Title
Characterization and evaluation of fibrous SrTiO3 prepared by hydrothermal process for the destruction of NO
Abstract

Fibrous SrTiO3 particles were prepared by a hydrothermal reaction method using strontium hydroxide octahydrate and protonic layered tetratitanate as raw materials. The samples were characterized by X-ray diffraction, X-ray photoelectron spectrometer, scanning electron microscopy, nitrogen adsorption–desorption isotherm measurements and diffusion reflectance spectra. SrTiO3 existed as two different morphologies of particles, i.e., fibrous particles and nanosized particles which attached to the surface of former ones. SrTiO3 seemed to be formed by two different ways. One way is a direct reaction between H2Ti4O9 and Sr(OH)2 and the other is a two-step reaction involving transformation of H2Ti4O9 to monoclinic TiO2 followed by a reaction with Sr(OH)2. Fibrous nitrogen doped SrTiO3, which exhibited excellent visible light responsive photocatalytic activity, was prepared by the heat treatment of fibrous SrTiO3 under the flow of ammonia gas at 600 °C for 3 h. Under the irradiation of light with wavelengths larger than 400 and 290 nm, the photocatalytic activities of fibrous SrTiO3 were 2.4 and 1.3 times greater than those of spherical SrTiO3 prepared by the solid-state reaction.

Keywords
Photocatalytic activity; Fibrous SrTiO3; Hydrothermal treatment; Nitrogen monoxide elimination
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Characterization and evaluation of fibrous SrTiO3 prepared by hydrothermal process for the destruction of NO
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Publisher
Database: Elsevier - ScienceDirect
Journal: Journal of Photochemistry and Photobiology A: Chemistry - Volume 187, Issue 1, 5 March 2007, Pages 72–77
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us