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Photocatalytic hydrogen production over flame spray pyrolysis-synthesised TiO2 and Au/TiO2

Paper ID Volume ID Publish Year Pages File Format Full-Text
47926 46485 2008 8 PDF Available
Title
Photocatalytic hydrogen production over flame spray pyrolysis-synthesised TiO2 and Au/TiO2
Abstract

A set of titanium dioxide and gold-modified titanium dioxide samples were prepared by flame spray pyrolysis (FP) and characterized by BET, XRD, HRTEM and UV–vis reflectance analysis. Their photocatalytic activity in hydrogen production in water suspension, either from water photosplitting or from methanol photoreforming, was tested in an expressly set up, closed recirculation laboratory scale photoreactor and compared to those of commercial TiO2 samples, including Degussa P25, pure rutile and pure anatase. The rate of hydrogen evolution (rH2rH2) increased with increasing the anatase content, pure anatase being the most active photocatalyst. Surface area and crystallinity, both key properties of photocatalysts, can be tuned up by properly setting FP operation parameters, including the selection of the organic solvent/fuel. In particular, FP-made TiO2 prepared from a xylene solution showed more active than P25. Finally, rH2rH2 increased by one order of magnitude in water photosplitting and by ca. 30 times in methanol photoreforming upon 1% gold addition on TiO2.

Keywords
Photocatalytic water splitting; Methanol photoreforming; H2 production; Flame spray pyrolysis; Au/TiO2
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Photocatalytic hydrogen production over flame spray pyrolysis-synthesised TiO2 and Au/TiO2
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis B: Environmental - Volume 84, Issues 1–2, 25 October 2008, Pages 332–339
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