fulltext.study @t Gmail

The replacement of {1 0 1} by {0 1 0} facets inhibits the photocatalytic activity of anatase TiO2

Paper ID Volume ID Publish Year Pages File Format Full-Text
45768 46422 2013 6 PDF Available
Title
The replacement of {1 0 1} by {0 1 0} facets inhibits the photocatalytic activity of anatase TiO2
Abstract

Anatase TiO2 crystals with {1 0 1}–{0 0 1} and {0 1 0}–{0 0 1} two facets coexistence were synthesized by (NH4)2TiF6 acting as titanium and fluorine sources and the photocatalytic activity of the samples were investigated. The replacement of {1 0 1} by {0 1 0} facets inhibits the photocatalytic activity of anatase TiO2. The mechanism was examined by photoluminescence spectrum, time-resolved photoluminescence spectra, field emission scanning electron microscope (FESEM) images of selected deposition of Ag, surface atoms structures and electronic band structures of anatase TiO2 facets. The results demonstrated that photoinduced charge transfer properties between {1 0 1} facets and {0 0 1} facets resulted in the efficient charge separation. Replacing {1 0 1} by {0 1 0}, the charge transfer mechanism was altered and the photoinduced electron–hole pairs cannot be separated well. The photocatalytic activity of it has thus been inhibited.

Graphical abstractWhen {1 0 1} was replaced by {0 1 0} facets, the most photoinduced electron and hole transfer to {0 0 1} facets and cannot be separated well under UV light irradiation. The photocatalytic oxidation and reduction all happened on {0 0 1} or {1 0 1} facets synchronously. So, the replacement of {1 0 1} by {0 1 0} facets inhibits the photocatalytic activity of anatase TiO2.Figure optionsDownload full-size imageDownload as PowerPoint slideHighlights► Synthesis of TiO2 crystals with {1 0 1}–{001} or {0 10}–{001} two facets coexistence. ► The replacement of {1 0 1} by {0 1 0} facet inhibits the photocatalytic activity of TiO2. ► Possible charge transfer mechanism photocatalytic mechanism was suggested.

Keywords
TiO2; Photocatalytic; Facet; Time-resolved PL
First Page Preview
The replacement of {1 0 1} by {0 1 0} facets inhibits the photocatalytic activity of anatase TiO2
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
Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis B: Environmental - Volumes 134–135, 2 May 2013, Pages 60–65
Authors
, , , , ,
Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
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