Nanostructuring of SnO2 via solution-based and hard template assisted method
Nanostructuring of SnO2 via solution-based and hard template assisted method
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DOI：
10.1016/j.tsf.2017.02.015
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发表时间：
2017-03-31
期刊：
影响因子：
2.1
通讯作者：
Garskaite, E.
中科院分区：
文献类型：
--
作者：
Alinauskas, L.;Brooke, E.;Garskaite, E.
通过水性溶胶-凝胶和硬模板辅助方法生产了直径为 150-200 nm 的多晶 SnO2 一维纳米结构，由尺寸类似于 10 nm 的均匀尺寸单晶组成。由草酸锡前体、柠檬酸和H2O2 制备稳定的溶液。解决了影响溶液稳定性和所得材料形态结构的溶液化学和参数。形态和结构表征揭示了纳米结构 SnO2 的均匀多孔结构。中空纳米管结构是由较低浓度的溶液产生的。 XPS 分析结果表明，获得了表面成分为 SnO1.8 的亚化学计量相，表明氧空位的形成。研究了光学性质，粉末样品的光学带隙能量估计为 3.61 eV。为制备一维 SnO2 的均匀纳米结构而开发的环保水溶胶-凝胶路线将能够轻松制造各种基于氧化物的纳米结构材料。 (C) 2017 Elsevier B.V. 保留所有权利。
Polycrystalline SnO2 1D nanostructures with diameters of 150-200 nm and consisting of uniformly sized single crystallites of similar to 10 nm in size were produced via aqueous sol-gel and hard template assisted methods. Stable sots were prepared from tin oxalate precursor, citric acid and H2O2. Solution chemistry and parameters influencing the stability of the sot and morphological structure of the resulting materials are addressed. Morphological and structural characterization revealed uniform and porous structure of the nanostructured SnO2. Hollow nanotubular structures were produced from solutions of lower concentration. Results of XPS analysis revealed that a sub-stoichiometric phase with surface composition of SnO1.8 was obtained indicating the formation of oxygen vacancies. The optical properties were investigated and optical band gap.energy for the powder samples was estimated to be 3.61 eV. An environmentally friendly aqueous sol-gel route developed to prepare homogeneous nanostructures of 1D SnO2 will enable facile fabrication of various oxide based nanostructured materials. (C) 2017 Elsevier B.V. All rights reserved.