Jump to main content
Jump to site search
Access to RSC content Close the message box

Continue to access RSC content when you are not at your institution. Follow our step-by-step guide.


Issue 9, 2013
Previous Article Next Article

Type-II ZnO nanorod–SnO2 nanoparticle heterostructures: characterization of structural, optical and photocatalytic properties

Author affiliations

Abstract

In this work we report, for the first time, on the preparation of ZnO nanorod–SnO2 nanoparticle (ZnO NR–SnO2 NP) heterostructures by a simple two-step thermal evaporation approach. Systematical characterization of the product reveals that the rutile SnO2 NPs, with a diameter of about 20 nm, are uniformly and tightly decorated on the entire ZnO NRs. Photoluminescence (PL) investigation on the ZnO NR–SnO2 NP heterostructures shows that they exhibit a significantly decreased UV emission compared with the bare ZnO NRs, revealing an efficient charge separation arising from the type-II band alignment. Enlightened by this merit, photocatalytic behavior of the synthesized heterostructures is studied, which shows a remarkably enhanced photodegradation performance of rhodamine B (RhB) in contrast to the pure ZnO NRs. We also carry out the stability test of the ZnO NR–SnO2 NP heterostructures and the result indicates an extremely high adhesion nature between the ZnO NR and the coated SnO2 NPs. This advantage endowed with the thermal evaporation approach can lead to an efficient spatial charge separation between the ZnO NR and the SnO2 NPs and thus effectively minimize the charge recombination along three-dimensional heterointerfaces, which makes such ZnO NR–SnO2 NP architectures highly promising for a wide range of photovoltaic and photocatalytic applications.

Graphical abstract: Type-II ZnO nanorod–SnO2 nanoparticle heterostructures: characterization of structural, optical and photocatalytic properties

Back to tab navigation

Supplementary files

Article information


Submitted
28 Dec 2012
Accepted
27 Feb 2013
First published
04 Mar 2013

Nanoscale, 2013,5, 3828-3833
Article type
Paper

Type-II ZnO nanorod–SnO2 nanoparticle heterostructures: characterization of structural, optical and photocatalytic properties

X. Huang, L. Shang, S. Chen, J. Xia, X. Qi, X. Wang, T. Zhang and X. Meng, Nanoscale, 2013, 5, 3828
DOI: 10.1039/C3NR34327H

Social activity

Search articles by author

Spotlight

Advertisements