材料科学
结构精修
纳米颗粒
纳米技术
钛酸钡
纳米晶
钙钛矿(结构)
化学工程
铁电性
纳米结构
X射线光电子能谱
陶瓷
电介质
晶体结构
光电子学
结晶学
化学
复合材料
工程类
作者
Neelanjana Bag,Jhilik Roy,Dhananjoy Mondal,Saheli Ghosh,Souravi Bardhan,Shubham Roy,Suman Bhandary,Sukhen Das
标识
DOI:10.1016/j.ceramint.2023.12.128
摘要
Currently, more attention is being paid to new and innovative techniques for combating issues like the emergence of multidrug-resistant strains (MDRs), the proliferation of biofilms, and the failure of antibiotics. In order to combat this, scientists are nowadays exploring different activable and responsive materials. Nano-sized barium titanate is a material that has an excellent piezo-responsive nature. The synthesis of perovskite barium titanate (BTO) nanoparticles by a nonconventional solvothermal method with exceptional piezo and ferroelectric properties is reported in this work. The synthesized BTO nanoparticles were well-characterized using different tools such as XRD, FTIR, TGA, electron microscopy, and UV–Vis spectroscopy, and the microstructure was analyzed using theoretical Rietveld refinement studies to substantiate the proper formation of the BTO nanostructure. Two different phases of BTO nanoparticles are observed after the refinement. Then, the piezoelectric effectiveness was further estimated by theoretical density functional theory (DFT) calculation. The catalytic behavior of the nanoparticles in bacteria has been studied for the degradation of Gram-negative Escherichia coli and Gram-positive Enterococcus faecalis cells using an ultrasonically driven piezocatalytic effect. A promising value in bacterial eradication was depicted by the antibacterial efficacy observed herein, with a few minutes of soft ultrasound (15 kHz) generating an enormous number of reactive radicals (ROS). The result of this study could aid in generating new dimensions in antibacterial therapy.
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