Department of Chemistry, T.M. Bhagalpur University, Bhagalpur 812007, India.
Colloids Surf B Biointerfaces. 2010 Jan 1;75(1):330-4. doi: 10.1016/j.colsurfb.2009.09.005. Epub 2009 Sep 15.
A new low-cost, green and reproducible Lactobacillus sp. assisted biosynthesis of BaTiO(3) nanoparticles is reported. X-ray and transmission electron microscopy analyses are performed to ascertain the formation of BaTiO(3) nanoparticles. The apparent crystallite size and lattice strain are estimated from Williamson-Hall approach. XRD analysis of the compound indicated the formation of a single-phase tetragonal structure. Individual nanoparticles as well as a few aggregate having the size of 20-80 nm are found. A possible involved mechanism for the biosynthesis of nano-BaTiO(3) has also been proposed in which ROS as well as partial pressure of gaseous hydrogen (rH(2)) of the culture solution seems to play an important role in the process. Remarkable enhancement in dielectric properties was observed in BaTiO(3)/polyvinylidene fluoride (PVDF) nanocomposite.
本文报道了一种新型的低成本、绿色且可重复的乳酸菌辅助合成 BaTiO(3)纳米粒子的方法。通过 X 射线和透射电子显微镜分析来确定 BaTiO(3)纳米粒子的形成。通过威廉姆森-霍尔法来估算表观晶粒尺寸和晶格应变。化合物的 XRD 分析表明形成了单相四方结构。发现了尺寸为 20-80nm 的单个纳米粒子以及一些团聚体。还提出了纳米 BaTiO(3)生物合成的可能涉及的机制，其中 ROS 以及培养溶液的氢气分压(rH(2))似乎在该过程中起重要作用。在 BaTiO(3)/聚偏二氟乙烯(PVDF)纳米复合材料中观察到介电性能的显著增强。
