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Surface-phase junctions of branched TiO2 nanorod arrays for efficient photoelectrochemical water splitting

Paper ID Volume ID Publish Year Pages File Format Full-Text
45882 46426 2014 5 PDF Available
Title
Surface-phase junctions of branched TiO2 nanorod arrays for efficient photoelectrochemical water splitting
Abstract

•We synthesized branched TiO2 NRs owning the surface anatase/rutile junctions.•The flower-like branched TiO2 NRs showed excellent PEC performance response.•The surface anatase/rutile junctions formed on the boundary of branches and trunks improved the PEC performance.

Flower-like branched TiO2 nanorod arrays (NRs) owning the surface anatase/rutile junctions on FTO substrates with operational diameter were successfully fabricated by a modified hydrothermal method. Transmission electron microscopy, Raman spectroscopy, field emission scanning electron microscopy, and X-ray diffraction revealed a unique flower-like ranched morphology, surface features, a crystal phase, and lattice constant of TiO2. Photoelectrochemical (PEC) measurements showed excellent photocatalytic properties of the flower-like branched TiO2 NRs. The surface phase formed between anatase and rutile TiO2 NRs which efficiently enhances the separation of photo-generated electron–hole pairs and accelerates the transport of charges is the key influence factor. The results suggest that the branched TiO2 NRs owning the surface anatase/rutile junctions are very promising platform to make highly efficient photoanodes for energy devices.

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Keywords
Surface-phase junction; Branched TiO2 nanorod array; Photoanode; Water splitting; Charge transfer
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Surface-phase junctions of branched TiO2 nanorod arrays for efficient photoelectrochemical water splitting
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis B: Environmental - Volumes 158–159, October 2014, Pages 296–300
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