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
Liu, Shunqiang, Mingjiang Xie, Yanxing Li, Xuefeng Guo, Weijie Ji, Weiping Ding, and Chaktong Au. "Novel sea urchin-like hollow core–shell SnO2 superstructures: Facile synthesis and excellent ethanol sensing performance." Sensors and Actuators B: Chemical 151.1 (2010): 229-235.