Structural, optical and antibacterial properties of yttriumdoped ZnO nanoparticles

Abstract

Yttrium-doped ZnO nanoparticles were synthesized by co-precipitation method to investigate structural, optical and antibacterial properties. X-ray diffraction analysis confirms hexagonal (wurtzite) structure with average crystallite size between 16 and 30 nm. Optical energy band gap decreaseswith increasing Y-doping concentration. ZnO nanoparticles were found to be highly effective against S. aureus and Y-doped ZnO nanoparticles against E. coli, B. subtilis and S. typhi. Undoped and Y-doped ZnO nanoparticles are good inorganic antimicrobial agents and can be synthesized by cost effective co-precipitation method. Keywords: nanoparticles, ZnO, coprecipitation, antibacterial properties. Resumo Nanopartículas de ZnO dopado com ítrio foram sintetizadas pelo método de coprecipitação para investigar as propriedades estruturais, ópticas e antibacterianas. A análise de difração de raios X confirma a estrutura hexagonal (wurtzita) com tamanho

Pure and Al-doped ZnO obtained by the modified Pechini method applied in ethanolic transesterification of cottonseed oil

“…4), according to the methodology described by [15], and the observed values were 3.2 eV for pure ZnO and 2.9 eV for ZNAL. Similar results were obtained by Bel-HadjTahar and Mohamed [25], who observed a decrease in the band gap value when ZnO was doped with aluminum, and Mote et al [26], who observed a decrease in the band gap value when ZnO was doped with yttrium. Bai et al [23] evaluated the influence of Al-doping into ZnO by firstprinciple calculations.…”

Utilization of Doped Nanoparticles of ZnO and TiO2 As Antimicrobial Agent

“…Yttrium-doped ZnO-NPs were utilized as antimicrobial agents against B. subtilis, S. typhi and E. coli. Pure ZnO-NPs showed excellent antimicrobial efficacy against S. aureus while ZnO-NPs doped with Yttrium showed excellent inhibition for all the tested strains 35 . Hence, Y-doped ZnO-NPs can serve as inexpensive and good inorganic antimicrobial agents.…”

New Dual-Functional and Reusable Bimetallic Y2ZnO4 Nanocatalyst for Organic Transformation under Microwave/Green Conditions

“…46 The optical band gap value was 2.7 eV, which was supported by a literature review. 3 The proposed mechanism pathway for the degradation of MO in the presence of the nanocatalyst and sunlight is shown in Figure 7.…”

“…Some of the progressive areas of green chemistry are the solvent-free and microwave conditions used for various types of organic reactions with nanocatalysts as heterogeneous catalysts. Metal oxides and, particularly, bimetallic oxide nanoparticles have several applications including as catalysts, photocatalysts, antimicrobial agents, materials with magnetic properties, and CT-DNA binding agents . The most attractive feature of nanoparticles lies in the field of green chemistry as they serve as green catalysts in organic reactions and have advantages such as easy separation from the reaction mixture by simple filtration, reusability, recyclability, and environmental friendliness. , …”