Assembly, formation mechanism, and enhanced gas-sensing properties of porous and hierarchical SnO2 hollow nanostructures

被引：7
作者：
Liu, Jinyun [1 ]
Meng, Fanli [1 ]
Zhong, Yu [1 ]
Liu, Jinhuai [1 ]
Chen, Guangyu [2 ]
Wan, Yuteng [2 ]
Qian, Kai [2 ]
Mouli, Sitaramanjaneya T. [3 ]
机构：
[1] Chinese Acad Sci, Inst Intelligent Machines, Key Lab Biomimet Sensing & Adv Robot Technol, Hefei 230031, Peoples R China
[2] Univ Sci & Technol China, Dept Chem, Hefei 230026, Peoples R China
[3] Indian Inst Technol Roorkee, Ctr Nanotechnol, Roorkee 247667, Uttar Pradesh, India
来源：
JOURNAL OF MATERIALS RESEARCH | 2010年 / 25卷 / 10期
基金：
中国国家自然科学基金;
关键词：
X-RAY-DIFFRACTION; CONTROLLABLE SYNTHESIS; OPTICAL-PROPERTIES; ZNO NANORODS; SULFIDE; SPHERES; GROWTH; SNS2; ARCHITECTURES; PERFORMANCE;
D O I：
10.1557/JMR.2010.0247
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Hierarchical and hollow SnS2 nanostructures as precursors were fabricated via a surfactant-assisted assembly process using sodium dodecyl sulfate as soft templates. The as-prepared SnS2 nanostructures were further oxidized to form porous SnO2 conversion for investigating their gas-sensing properties in drug-precursor detection. On the basis of a series of time- and ratio-dependent reactions, a formation mechanism of the special nanostructures and factors influencing morphology and structure were determined. Gas-sensing measurements revealed that the porous and hierarchical SnO2 hollow nanostructures were sensitive to drug precursors, indicating promising applications in environmental monitoring and public safety investigation. In addition, we found that the assembled SnO2 nanomaterials possessed significantly enhanced gas-sensing properties compared with unassembled SnO2 with a solid interior.
引用
收藏
页码：1992 / 2000
页数：9
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