Scholarlink

<p>Ag-doped ZnO nanoparticles (NPs) were synthesized with varying Ag contents, and their structural, optical, and antibacterial properties were studied. The average crystallite sizes were determined to be 79 ± 0.9&#xa0;nm for pristine ZnO, 76.5 ± 1.4&#xa0;nm for ZnO-Ag<sub>1.5%</sub>, 73.8 ± 1.8&#xa0;nm for ZnO-Ag<sub>2.5%</sub>, and 67 ± 1.1&#xa0;nm for ZnO-Ag<sub>5%</sub>, indicating a progressive decrease in grain size with increasing Ag incorporation. Photoluminescence (PL) analysis revealed an intense emission peak at 393&#xa0;nm, attributable to near-band-edge (NBE) emission. Antibacterial performance assessed <i>via</i> the zone of inhibition (ZOI) method showed values of 13 ± 0.17&#xa0;mm for control ampicillin, 9.5 ± 0.21&#xa0;mm for ZnO, 11 ± 0.16&#xa0;mm for ZnO-Ag<sub>1.5%</sub>, 12 ± 0.15&#xa0;mm for ZnO-Ag<sub>2.5%</sub>, and 14 ± 0.20&#xa0;mm for ZnO-Ag<sub>5%</sub>, demonstrating enhanced activity with increasing Ag content. The improved catalytic and antibacterial performance of Ag-doped ZnO is attributed to the suppression of electron–hole recombination and the enhancement in the generation of reactive oxygen species.</p> Graphical abstract <p></p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Silver-modified ZnO nanoparticles: improved photocatalytic and antibacterial properties

  • 期刊论文

  • 发表日期：

    2026年1月29日

查看全文
  • Amitender Singh,
  • Dinesh Kumar,
  • Kavita Yadav,
  • A. C. Sun,
  • Yassine Slimani,
  • Preeti Thakur,
  • Atul Thakur

摘要

Ag-doped ZnO nanoparticles (NPs) were synthesized with varying Ag contents, and their structural, optical, and antibacterial properties were studied. The average crystallite sizes were determined to be 79 ± 0.9 nm for pristine ZnO, 76.5 ± 1.4 nm for ZnO-Ag1.5%, 73.8 ± 1.8 nm for ZnO-Ag2.5%, and 67 ± 1.1 nm for ZnO-Ag5%, indicating a progressive decrease in grain size with increasing Ag incorporation. Photoluminescence (PL) analysis revealed an intense emission peak at 393 nm, attributable to near-band-edge (NBE) emission. Antibacterial performance assessed via the zone of inhibition (ZOI) method showed values of 13 ± 0.17 mm for control ampicillin, 9.5 ± 0.21 mm for ZnO, 11 ± 0.16 mm for ZnO-Ag1.5%, 12 ± 0.15 mm for ZnO-Ag2.5%, and 14 ± 0.20 mm for ZnO-Ag5%, demonstrating enhanced activity with increasing Ag content. The improved catalytic and antibacterial performance of Ag-doped ZnO is attributed to the suppression of electron–hole recombination and the enhancement in the generation of reactive oxygen species.

Graphical abstract