Synthesis, characterization of Al-doped SnO2 nanoparticles for enhanced dielectric properties and antibacterial activity

被引：1

作者：

Jahnavi, Vemakoti Siva ^{[1
]}

Babu, B. Rajesh ^{[1
]}

Lakshmi, Ch S. ^{[1
]}

机构：

[1] GVP Coll Engn Women, Dept BS &H, Visakhapatnam 530048, AP, India

来源：

PHYSICA B-CONDENSED MATTER | 2024年 / 692卷

关键词：

ELECTRICAL-PROPERTIES; MAGNETIC-PROPERTIES; OPTICAL-PROPERTIES; CONDUCTION MECHANISM; PHYSICAL-PROPERTIES; TIO2; NANOPARTICLES; NANO-PARTICLES; BAND-GAP; TEMPERATURE; FILMS;

D O I：

10.1016/j.physb.2024.416359

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

Sol-gel derived, Sn(1-x)AlxO2 (x = 0, 0.01, 0.02, 0.03, 0.04 by at.wt) nanoparticles displayed tetragonal rutile structure without any second phase as confirmed by XRay Diffractometer analysis. Reduction in crystallite size was observed with the introduction of Al in SnO2 lattice and sizes were comparable with Williamson-Hall method. Chemical composition was identified by the peaks obtained in FTIR spectrum. XPS studies confirm that Al doping induces large number of oxygen vacancies. The synthesized samples witnessed high dielectric constant and AC conductivity in the order of 2x10(5)-1.2 x 104 & 0.011(Omega m)(-1)-0.1156(Omega m)(-1) respectively. Antibacterial activity tested against G+ and G-bacteria used (S aureus, Streptococcus pneumoniae and E. coli, Vibrio cholera bacteria] were measured by well diffusion method. Bacterial behaviour was inhibited by Al doped SnO2 nanoparticles as a result of reactive oxygen species generated by oxygen vacancies.

引用

页数：16

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