A rapid and versatile method for solvothermal synthesis of Sb2O3 nanocrystals under mild conditions
A rapid and versatile method for solvothermal synthesis of Sb2O3 nanocrystals under mild conditions
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DOI：
10.1007/s13204-012-0156-y
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发表时间：
2013-12-01
影响因子：
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通讯作者：
Devarajan, Prem Anand
中科院分区：
文献类型：
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作者：
Kaviyarasu, K.;Sajan, D.;Devarajan, Prem Anand
提出了一种在水溶液中制备Sb_2 O_3纳米结构的简单方法。采用湿化学法合成了平均粒径约为44 nm的Sb 2 O3纳米粒子。以高收率选择性地收获了方钠锰矿立方结构的Sb_2O_3纳米晶。采用X射线粉末衍射、傅里叶变换红外光谱（FTIR）、紫外-可见-近红外光谱（UV-Vis-NIR）和扫描电子显微镜（SEM）对产物进行了表征。根据Debye-Scherrer方程计算，Sb_2 O_3纳米粒子的粒径在44-385 nm之间。Sb_2 O_3纳米晶的X射线密度、比表面积和孔隙率分别为2.969 g/cm（3）、2.0208 × 10 ~（14）cm（2）/g和1.0185 × 10 ~（-3）m。从UV-Vis-NIR分析，Sb 2 O3纳米晶体的带隙估计为在220 nm处为5.6 eV。使用FTIR光谱研究鉴定样品中的各种官能团。SEM图像显示出非常尖的形态。在这些结构中清楚地观察到非常小的球形物体。Sb_2 O_3纳米晶的消光系数、介电常数的真实的实部和虚部、极化率和折射率分别为7.605 × 10 ~（-9）、0.2851 × 10 ~（-17）、3.747 × 10 ~（-8）、0.48322和2.4636。
A very simple strategy for preparing Sb2O3 nanostructures under ambient aqueous condition is presented. Sb2O3 nanoparticles with an average size of approximately 44 nm were synthesised using wet chemical method. Senarmontite cubical structure Sb2O3 nanocrystals have been selectively harvested in high yield. The as-obtained nanoproducts were characterized by X-ray powder diffraction, Fourier transform infrared (FTIR), ultraviolet-visible near infrared spectroscopy (UV-Vis-NIR) and scanning electron microscopy (SEM) analyses. The size of the Sb2O3 nanoparticles was found to be in the range 44-385 nm from Debye-Scherrer equation. The X-ray density, surface area and porosity of Sb2O3 nanocrystals were found to be 2.969 g/cm(3), 2.0208 x 10(14) cm(2)/g and 1.0185 x 10(-3) m, respectively. From the UV-Vis-NIR analysis, the band gap of Sb2O3 nanocrystals was estimated to be 5.6 eV at 220 nm. The various functional groups in the samples were identified using FTIR spectral studies. The SEM images showed a very spiky morphology. Very small spherical-shaped objects were clearly observed within these structures. The extinction coefficient, real and imaginary part of the dielectric constant, electric susceptibility and the refractive index of Sb2O3 nanocrystals were 7.605 x 10(-9), 0.2851 x 10(-17), 3.747 x 10(-8), 0.48322 and 2.4636, respectively.