Department of Chemistry
Novel sea urchin-like hollow core–shell SnO2 superstructures: Facile synthesis and excellent ethanol sensing performance
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.
Gas sensor, Ostwald ripening, Superstructure, Tin dioxide, Urchin
Source Publication Title
Sensors and Actuators B: Chemical
Link to Publisher's Edition
Liu, S., Xie, M., Li, Y., Guo, X., Ji, W., Ding, W., & Au, C. (2010). Novel sea urchin-like hollow core–shell SnO2 superstructures: Facile synthesis and excellent ethanol sensing performance. Sensors and Actuators B: Chemical, 151 (1), 229-235. https://doi.org/10.1016/j.snb.2010.09.015