马尾衍生碳量子点的多模态表征：从纳米结构到非线性光学行为

IF 3 Q3 Physics and Astronomy

Results in Optics Pub Date : 2025-10-12 DOI:10.1016/j.rio.2025.100913

Zahra Khajavi , Behnam Mahdavi , Ehsan Koushki , Esmail Rezaei-Seresht

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引用次数: 0

摘要

碳量子点（CQDs）由于其在各种工业应用中的潜力而引起了人们的广泛关注。广泛的研究一直致力于从物理化学的角度揭示CQDs的复杂和神秘的性质。本研究以马尾植物提取物为原料，采用水热法合成了CQDs。然后将铁和钴加载到cqd上，研究它们的吸附势。采用透射电镜（TEM）、动态光散射（DLS）、傅里叶变换红外（FT-IR）、紫外-可见（UV-Vis）、光致发光（PL）光谱和z -扫描孔径对合成的CQDs的物理、化学和结构性质进行了研究。结果表明，与金属负载CQDs相比，CQDs的FT-IR光谱发生了变化。TEM成像显示，CQDs的平均尺寸为5.27 nm。此外，在z扫描实验中观察到反向饱和吸收（RSA）和密集的衍射环图案，表明CQDs具有很高的非线性光学响应。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Multimodal characterization of horsetail-derived carbon quantum dots: from nanostructure to nonlinear optical behavior

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Multimodal characterization of horsetail-derived carbon quantum dots: from nanostructure to nonlinear optical behavior

Carbon quantum dots (CQDs) have attracted significant attention due to their potential in various industrial applications. Extensive research has been dedicated to uncovering the complex and enigmatic nature of CQDs from a physicochemical perspective. In the present study, CQDs were synthesized from horsetail plant extract using the hydrothermal method. Iron and cobalt were then loaded onto the CQDs to investigate their adsorption potential. Transmission electron microscopy (TEM), Dynamic Light Scattering (DLS), Fourier transform infrared (FT-IR), ultraviolet–visible (UV–Vis), photoluminescence (PL) spectroscopy, and Z-scan aperture were used to investigate the physical, chemical, and structural properties of the synthesized CQDs. The results revealed changes in the FT-IR spectra of CQDs compared to the metals loaded CQDs. TEM imaging showed that the CQDs had an average size of 5.27 nm. Furthermore, reversed saturation absorption (RSA) and dense diffraction rings patterns were observed in Z-scan experiments, indicating a high nonlinear optical response of CQDs.

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