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Synthesis of TiO2 nanoparticles using novel titanium oxalate complex towards visible light-driven photocatalytic reduction of CO2 to CH3OH

Paper ID Volume ID Publish Year Pages File Format Full-Text
40843 45868 2012 8 PDF Available
Title
Synthesis of TiO2 nanoparticles using novel titanium oxalate complex towards visible light-driven photocatalytic reduction of CO2 to CH3OH
Abstract

TiO2 nanoparticles (NPs) with controlled crystalline structure and morphology were synthesized by a facile hydrothermal method using a novel titanium oxalate complex. The structure, morphology, and spectral properties of the synthesized TiO2 NPs were characterized by X-ray diffraction, Raman spectroscopy, scanning/transmission electron microscopy, and UV–vis diffuse reflectance spectroscopy. The titania phases of anatase, rutile, or brookite can be easily tuned by tailoring the solution pH during reaction. Highly ordered flower-like rutile could be obtained with oxalic acid additive. The synthesized TiO2 catalysts showed excellent visible light absorption and remarkable photocatalytic activity for CO2 reduction to CH3OH under both UV–vis and visible light irradiation, mainly due to doped carbon and nitrogen. Bicrystalline anatase–brookite composite afforded maximum CH3OH yield, attributed mainly to the unique electrical band structures and efficient charge transfer between the two crystalline phases.

Graphical abstractFigure optionsDownload full-size imageDownload high-quality image (234 K)Download as PowerPoint slideHighlights► TiO2 NPs with controlled crystalline phase and morphology has been synthesized. ► The synthesized TiO2 is highly active for CO2 reduction under visible light irradiation. ► The junction effect of two crystalline phases is responsible for the high efficiency of brookite–anatase particles.

Keywords
TiO2 nanoparticles; CO2 reduction; CH3OH; Titanium oxalate complex; Visible light response
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Synthesis of TiO2 nanoparticles using novel titanium oxalate complex towards visible light-driven photocatalytic reduction of CO2 to CH3OH
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volumes 437–438, 26 September 2012, Pages 28–35
Authors
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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