纳米颗粒
高分辨率透射电子显微镜
通量
成核
材料科学
铜
吸光度
激光烧蚀
化学工程
银纳米粒子
激光器
带隙
纳米技术
分析化学(期刊)
光电子学
化学
光学
透射电子显微镜
冶金
色谱法
物理
有机化学
工程类
作者
Mahmood Alhajj,Md. Safwan Abd Aziz,A.A. Salim,Sunita Sharma,W.H.A. Kamaruddin,Sib Krishna Ghoshal
标识
DOI:10.1016/j.apsusc.2022.156176
摘要
Production of high purity silver (Ag) and copper (Cu) nanoparticles (NPs) with desired physical properties remains challenging. Thus, pulsed laser ablation in liquid (PLAL) method was used to prepare spherical AgNPs and CuNPs in deionized water (DIW) at various laser fluencies (LFs) (2.83–14.15 J cm−2). The structures, morphologies and optical behavior of these NPs as a function of varying LFs were determined. UV–Vis absorbance of these NPs was gradually increased accompanied by a blue shift. The optical band gap energy of AgNPs and CuNPs were in the range of 2.66–2.79 eV and 3.14–3.44 eV, respectively, wherein ATR-IR spectra confirmed their high purity. TEM and HRTEM images displayed the nucleation of spherical, homogenous, and crystalline AgNPs and CuNPs with corresponding mean diameter ranged from 8.1 to 32.5 nm and 6.2–33.1 nm. It is asserted that the obtained pure and spherical AgNPs and CuNPs with customized properties may be beneficial for photovoltaic and photocatalytic applications.
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