fulltext.study @t Gmail

Hollow spherical RuO2@TiO2@Pt bifunctional photocatalyst for coupled H2 production and pollutant degradation

Paper ID Volume ID Publish Year Pages File Format Full-Text
44784 46353 2016 8 PDF Available
Title
Hollow spherical RuO2@TiO2@Pt bifunctional photocatalyst for coupled H2 production and pollutant degradation
Abstract

•New bifuntional RuO2@TiO2@Pt photocatalyst in hollow sphere.•RuO2 and Pt deposited on outer and inner TiO2 shell surfaces.•Coupled photocatalytic H2 production and organics degradation.•Directed photocharge transfer andcollection to reduce recombination.•Enhanced light harvesting owing to multiple reflections.

A novel bifuntional RuO2@TiO2@Pt photocatalyst was designed by control-assembling TiO2 hollow spheres with RuO2 and Pt deposited onto outer and inner shell surfaces, respectively. This RuO2@TiO2@Pt was used in coupled photocatalytic H2 production and organic pollutant degradation, which showed the synergetic effect between photocatalytic oxidation and reduction. Meanwhile, the RuO2 facilitated the transfer and collection of photo-induced holes generated from TiO2, followed by oxidizing organic pollutants for degradation. Similarly, the Pt promoted the transfer and enrichment of photoelectrons, which favored the proton reduction to H2 as a cocatalyst. Thus, the RuO2@TiO2@Pt exhibited very high activity owing to the enhanced light harvesting through multiple reflections in the TiO2 hollow chamber, the rapid separation corresponding to the low recombination of photoelectron-hole and the cooperative promoting effect from RuO2 and Pt cocatalysts in photocatalytic oxidation and reduction.

Graphical abstractRuO2@TiO2@Pt hollow spheres with RuO2 and Pt individually deposited onto outer and inner TiO2 shell surfaces were synthesized. This photocatalyst exhibited high activity in coupled photocatalytic H2 production and organics degradation owing to the enhanced light harvesting through multiple reflections and the RuO2-Pt synergetic effect for enriching photocharges and diminishing photoelectron-hole recombination.Figure optionsDownload full-size imageDownload as PowerPoint slide

Keywords
RuO2@TiO2@Pt hollow spheres; Controlled assembly of RuO2 and Pt; Coupled photocatalytic H2 production and organics degradation; Synergetic effect
First Page Preview
Hollow spherical RuO2@TiO2@Pt bifunctional photocatalyst for coupled H2 production and pollutant degradation
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 - Volume 194, 5 October 2016, Pages 42–49
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