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首页> 外文期刊>Journal of the Indian Chemical Society >Optical properties of L-alanine passivated CdS nanoparticles
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Optical properties of L-alanine passivated CdS nanoparticles

机译：L-丙氨酸钝化CdS纳米粒子的光学性质

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摘要

CdS nanoparticles passivated with amino acid L-alanine having spherical hierarchical morphology were synthesized by low temperature wet chemical method. The synthesized nanoparticles were characterized by UV-Visible spectroscopy to know the variation of band gaps with concentration of surface modifying agents. Indeed, blue shift in band gap is observed and it increases with increasing concentration of surface modifying agents. Powder XRD, SEM and TEM analysis were carried out for the confirmation of formation of nanoparticles. Powder XRD study was done to confirm the crystal structure and Debye-Scherrer formula was used to find out the average particle size from the broadening of XRD peaks. The average particle size is found to less than 5 nm. FT-IR spectroscopy was performed to know the functional groups of the grown nanoparticles. From the observed peaks, it was confirmed that the CdS nanoparticles were capped by L-alanine. Photoluminescence study was performed on the grown CdS nanoparticles.
机译：通过低温湿化学法合成了具有球形分层形态的氨基酸L-丙氨酸钝化的CdS纳米粒子。通过UV-可见光谱对合成的纳米颗粒进行表征，以了解带隙随表面改性剂浓度的变化。实际上，观察到带隙蓝移并且其随着表面改性剂浓度的增加而增加。进行粉末XRD，SEM和TEM分析以确认纳米颗粒的形成。进行粉末XRD研究以确认晶体结构，并使用Debye-Scherrer公式从XRD峰的扩宽中找出平均粒径。发现平均粒径小于5nm。进行FT-IR光谱分析以了解所生长的纳米颗粒的官能团。从观察到的峰确认了CdS纳米颗粒被L-丙氨酸封端。对生长的CdS纳米颗粒进行了光致发光研究。

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