文献类型：期刊文献

英文题名：Surfactant-free solution phase synthesis of monodispersed SnO₂ hierarchical nanostructures and gas sensing properties

作者：Zhang, Haijiao[2];He, Qingquan[2];Zhu, Xuedong[1];Pan, Dengyu[2];Deng, Xiaoyong[2];Jiao, Zheng[2]

机构：[1]E China Univ Sci & Technol, State Key Lab Chem Engn, Shanghai 200237, Peoples R China;[2]Shanghai Univ, Sch Environm & Chem Engn, Inst Nanochem & Nanobiol, Shanghai 200444, Peoples R China

年份：2012

卷号：14

期号：9

起止页码：3169

外文期刊名：CRYSTENGCOMM

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000302317900026)】；

基金：The work was supported by the Natural Science Foundation of China (61174011), Science and Technology Commission of Shanghai Municipality (10DZ0500100, 11DZ2272100), Specialized Research Fund for the Doctoral Program of Higher Education (20103108120021), Innovation Program of Shanghai Municipal Education Commission (12YZ013), Shanghai Leading Academic Disciplines (S30109), Research Funding of State Key Laboratory of Chemical Engineering (ECUST), and State Key Laboratory of Molecular Engineering of Polymers (Fudan University).

语种：英文

摘要：In this work, SnO2 hierarchical nanostructures were successfully prepared via a simple and surfactant-free hydrothermal process starting from stannous sulfate (SnSO4) and trisodium citrate dihydrate (Na3C6H5O7 center dot 2H(2)O) in a suitable ethanol-water system. TEM and HRTEM images showed that the obtained SnO2 products are uniform, well-dispersed, and have spherical architectures, composed of tiny primary nanocrystals, and the diameters are about 50 nm. It was found that the amount of Na3C6H5O7 center dot 2H(2)O and the volume ratio of ethanol and water played important roles in determining the final morphologies of the products. The gas sensing results indicated that the sensor made from porous SnO2 nanostructures calcined at 400 degrees C exhibited excellent gas sensing performance to butanol at the low temperature compared with those under higher calcination temperature and commercial SnO2. The SnO2 hierarchical nanostructures possess uniform size and large surface areas, making them ideal candidates for more potential applications such as battery electrodes and as opto-electronic devices.