Hariharan S, Udayabhaskar R, Ravindran T R, Karthikeyan B
Department of Physics, National Institute of Technology, Tiruchirappalli 620 015, India.
Indira Gandhi Centre for Atomic Research, Kalpakkam 603 102, India.
Spectrochim Acta A Mol Biomol Spectrosc. 2016 Jun 15;163:13-9. doi: 10.1016/j.saa.2016.02.045. Epub 2016 Mar 17.
We report preparation of pure and surfactant added α-Bi2O3 microrods through simple chemical method at moderate temperature. Cetyltrimethyl ammonium bromide (CTAB) is used as a surfactant. X-ray diffraction (XRD), scanning electron microscopy (SEM), Fourier Transform Infrared (FTIR) spectroscopy, Raman spectroscopy, UV-Vis absorption and photoluminescence (PL) measurements were carried out to understand the effect of surfactant (CTAB) on structural, phonon and optical properties of the prepared material. It is observed that the crystallite size, optical band gap and the structural defects (oxygen vacancies) decreases due to the effect of surfactant. Raman spectral studies exhibit various phonon modes of Bi2O3 and also decrease in the FWHM of the phonon modes is observed after the addition of CTAB.
我们报道了通过简单的化学方法在适中温度下制备纯的以及添加了表面活性剂的α - Bi₂O₃微棒。十六烷基三甲基溴化铵（CTAB）用作表面活性剂。进行了X射线衍射（XRD）、扫描电子显微镜（SEM）、傅里叶变换红外（FTIR）光谱、拉曼光谱、紫外 - 可见吸收和光致发光（PL）测量，以了解表面活性剂（CTAB）对所制备材料的结构、声子和光学性质的影响。观察到由于表面活性剂的作用，微晶尺寸、光学带隙和结构缺陷（氧空位）减小。拉曼光谱研究展示了Bi₂O₃的各种声子模式，并且在添加CTAB后观察到声子模式的半高宽也减小了。
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