Green Synthesis of Silver Nanoparticles Using Justicia adhatoda Leaf Extract: Characterization and Nonlinear Optical Applications

IF 3.7 2区 化学 Q2 CHEMISTRY, APPLIED
K. Priyadharsini Karthikeyan, A. G. Bharathi Dileepan, G. Murali, Natarajan Arumugam, Abdulrahman I. Almansour, Madhappan Santhamoorthy, S. Jeyaram
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Abstract

This study reports the synthesis of silver nanoparticles (AgNPs) using leaf extract of Justicia adhatoda. This green and eco-friendly method produces highly stable AgNPs, which are characterized using various techniques, including UV–visible absorbance, FT-IR, XRD, FESEM, and TEM. A strong surface plasmon resonance (SPR) is observed at a wavelength of 411 nm. The functional groups present in the AgNPs are identified using FT-IR, revealing a peak at 456 cm−1 corresponding to Ag+ bond vibration. The crystalline properties of AgNPs are examined via XRD, with an average crystal size measured at 23.33 nm. Moreover, FESEM and TEM studies revealed that the nanoparticles possess a spherical shape. The Z-scan technique is employed at a wavelength of 405 nm to investigate the third-order nonlinear optical (NLO) responses of AgNPs. The nonlinear refractive index (n2) and nonlinear absorption coefficient (β) are attributed to self-defocusing and reverse saturable absorption (RSA) processes. A significant third-order NLO susceptibility is measured, estimated to be in the order of 10−7 esu. Overall, the experimental results clearly indicate that the green synthesis of AgNPs using the leaf extract of Justicia adhatoda represents a promising material for NLO applications.

Abstract Image

利用假山茱萸叶提取物绿色合成纳米银:表征及其非线性光学应用
本研究报道了以假山茱萸叶提取物为原料合成纳米银的方法。这种绿色环保的方法生产出高度稳定的AgNPs,并使用各种技术进行了表征,包括紫外可见吸收度,FT-IR, XRD, FESEM和TEM。在411nm波长处观察到强表面等离子体共振(SPR)。利用FT-IR鉴定了AgNPs中的官能团,发现在456 cm−1处有一个与Ag+键振动相对应的峰。通过XRD测试了AgNPs的晶体性质,平均晶粒尺寸为23.33 nm。此外,FESEM和TEM研究表明,纳米颗粒具有球形。利用z扫描技术在405nm波长下研究了AgNPs的三阶非线性光学响应。非线性折射率(n2)和非线性吸收系数(β)归因于自离焦和反向饱和吸收(RSA)过程。测量了显著的三阶NLO敏感性,估计在10−7 esu的数量级。综上所述,实验结果清楚地表明,利用justice Justicia adhatoda叶片提取物绿色合成AgNPs是一种很有前景的NLO应用材料。
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来源期刊
Applied Organometallic Chemistry
Applied Organometallic Chemistry 化学-无机化学与核化学
CiteScore
7.80
自引率
10.30%
发文量
408
审稿时长
2.2 months
期刊介绍: All new compounds should be satisfactorily identified and proof of their structure given according to generally accepted standards. Structural reports, such as papers exclusively dealing with synthesis and characterization, analytical techniques, or X-ray diffraction studies of metal-organic or organometallic compounds will not be considered. The editors reserve the right to refuse without peer review any manuscript that does not comply with the aims and scope of the journal. Applied Organometallic Chemistry publishes Full Papers, Reviews, Mini Reviews and Communications of scientific research in all areas of organometallic and metal-organic chemistry involving main group metals, transition metals, lanthanides and actinides. All contributions should contain an explicit application of novel compounds, for instance in materials science, nano science, catalysis, chemical vapour deposition, metal-mediated organic synthesis, polymers, bio-organometallics, metallo-therapy, metallo-diagnostics and medicine. Reviews of books covering aspects of the fields of focus are also published.
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