http://dx.doi.org/10.1016/j.snb.2010.09.015">
 

Document Type

Journal Article

Department/Unit

Department of Chemistry

Title

Novel sea urchin-like hollow core–shell SnO2 superstructures: Facile synthesis and excellent ethanol sensing performance

Language

English

Abstract

Novel hierarchical sea urchin-like hollow core-shell SnO2 superstructures have been fabricated by a template-free hydrothermal method, based on an inside-out Ostwald ripening mechanism. For comparison, hollow SnO2 spheres were also prepared. It is found that the sea urchin-like hollow core-shell SnO2 superstructures exhibit nearly three times better response to ethanol than the hollow SnO2 spheres. The superior sensing performance is plausibly originated from the unique hierarchical core-shell structure with the nano-sized spikes (5-15 nm in diameter) on the shells. © 2010 Elsevier B.V. All rights reserved.

Keywords

Gas sensor, Ostwald ripening, Superstructure, Tin dioxide, Urchin

Publication Date

2010

Source Publication Title

Sensors and Actuators B: Chemical

Volume

151

Issue

1

Start Page

229

End Page

235

Publisher

Elsevier

ISSN (print)

09254005

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