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

被引：57

作者：

Liu, Shunqiang ^{[1
]}

Xie, Mingjiang ^{[1
]}

Li, Yanxing ^{[1
]}

Guo, Xuefeng ^{[1
]}

Ji, Weijie ^{[1
]}

Ding, Weiping ^{[1
]}

Au, Chaktong ^{[2
]}

机构：

[1] Nanjing Univ, Key Lab Mesoscop Chem, MOE, Sch Chem & Chem Engn, Nanjing 210093, Peoples R China

[2] Hong Kong Baptist Univ, Dept Chem, Ctr Surface Anal & Res, Kowloon Tong, Hong Kong, Peoples R China

来源：

SENSORS AND ACTUATORS B-CHEMICAL | 2010年 / 151卷 / 01期

关键词：

Superstructure; Urchin; Tin dioxide; Ostwald ripening; Gas sensor; GAS SENSORS; FABRICATION; NANOSTRUCTURES; MICROSPHERES; NANOSPHERES; TEMPLATES; NANOWIRES; HYDROGEN; SPHERES; GROWTH;

D O I：

10.1016/j.snb.2010.09.015

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

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. (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：229 / 235

页数：7

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