Department of Physics, Agra College, Dr. B. R. Ambedkar University, Agra, 282004, India.
J Biomed Nanotechnol. 2011 Feb;7(1):161-2. doi: 10.1166/jbn.2011.1249.
Nanocrystalline powders showed the distinguishable difference in catalytic, electrical and optical properties from macroscopic, microscopic and bulk materials. Among them, zinc oxide (ZnO) is one of the candidates that have been attracting attention because of its wide band gap energy of about 3.37 eV. In this work, ZnO nanoparticles were synthesised by chemical method using ZnSO4 x 7H2O and NaOH as reagent in molar ratio 1:4. The X-ray diffraction (XRD) and Raman Spectroscopy were used to characterize the structural, chemical features and optical properties of zinc oxide nanoparticles. The average crystalline size of the zinc oxide nanoparticles was found to be 25 nm for as prepared samples. Raman Scattering exhibits sharp and strong E2 mode peak at nearly 439 cm(-1), which confirms wurtzite structure of zinc oxide nano particles. Our study reveals that the nanoparticles if suitably modified can be useful for drug delivery.
纳米晶粉末在催化、电学和光学性质方面与宏观、微观和体材料有明显的区别。其中，氧化锌 (ZnO) 是一种备受关注的候选材料，因为其具有约 3.37eV 的宽带隙能。在这项工作中，使用 ZnSO4 x 7H2O 和 NaOH 作为试剂，以摩尔比 1:4 通过化学方法合成了 ZnO 纳米粒子。X 射线衍射 (XRD) 和拉曼光谱用于表征氧化锌纳米粒子的结构、化学特征和光学性质。发现所制备样品的氧化锌纳米粒子的平均晶粒尺寸为 25nm。拉曼散射在近 439cm(-1) 处显示出尖锐而强的 E2 模式峰，这证实了氧化锌纳米粒子的纤锌矿结构。我们的研究表明，如果对纳米粒子进行适当的修饰，它们可以用于药物输送。
