fulltext.study @t Gmail

Facile synthesis of mesoporous bicrystallized TiO2(B)/anatase (rutile) phases as active photocatalysts for nitrate reduction

Paper ID Volume ID Publish Year Pages File Format Full-Text
51230 46836 2012 6 PDF Available
Title
Facile synthesis of mesoporous bicrystallized TiO2(B)/anatase (rutile) phases as active photocatalysts for nitrate reduction
Abstract

Polyhedral and wormhole-like mesoporous titania nanoparticles composed of TiO2(B) and anatase (rutile) were successfully synthesized by hydrothermal self-assembly method employing, respectively polyacrylamide (AA), polyvinyl alcohol (VA) and polyoxyethyl lauryl ether (ELE) as templates. TEM, X-ray diffraction, FTIR, UV–vis DR spectroscopy and N2 sorptiometry were used for the characterization of surface morphology, phase composition, electronic properties and surface texturing of the synthesized catalysts. The photocatalytic activity was evaluated via the photo-reduction of nitrate in aqueous solution under UV light irradiation. The TiO2 catalyst derived from ELE presented the highest activity due to the alternate structure of anatase and TiO2(B) phases.

Graphical abstractFigure optionsDownload full-size imageDownload as PowerPoint slideHighlights► Synthesis of bicrystalline TiO2 (B)/anatase via hydrothermal-assembly method. ► They offered higher photocatalytic reduction of NO3- than P25. ► They characterized by BET, FTIR, TEM, XRD and UV-vis spectroscopy. ► TiO2 (B)/anatase interface played major roles for NO3- reduction.

Keywords
Nitrate photoreduction; Polymeric templates; Bicrystalline TiO2 (B)/anatase; Characterization
First Page Preview
Facile synthesis of mesoporous bicrystallized TiO2(B)/anatase (rutile) phases as active photocatalysts for nitrate reduction
Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Communications - Volume 28, 5 November 2012, Pages 58–63
Authors
, , ,
Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis