Gold nanoparticles were prepared in a carbon quantum dots solution using the laser ablation technique to enhance the photoluminescence property of a carbon quantum dots solution. The gold plate was ablated using a Q-Switched Nd:YAG laser at 4, 8, 12, and 16 minutes with a stable laser energy. The optical properties, functional groups, and the morphology of the prepared samples were examined using UV-visible spectroscopy, Fourier transform spectroscopy, and transmission electron microscopy, respectively. When the ablation time increased, the size of the gold nanoparticles decreased from 20.69 nm to 13.52 and the plasmonic quality factor and concentration of the gold nanoparticles increased. The intensity peak of the photoluminescence carbon quantum dots solution increased in the presence of the gold nanoparticles and the interaction between the pure carbon quantum dots and the gold-nanoparticles/carbon quantum dots composite with pyrene were investigated using photoluminescence spectroscopy. Consequently, the variation in the photoluminescent peak in the presence of the gold nanoparticles was greater than the variation in the photoluminescence peak in the presence of pure carbon quantum dots. The detection limit was 1 ppm. Therefore, the gold nanoparticles not only enhanced the photoluminescence property of the CQD bath also it improved the interaction of the CQD with pyrene.

中文翻译：

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基于激光烧蚀金纳米粒子增强碳量子点荧光性能评估芘

使用激光烧蚀技术在碳量子点溶液中制备金纳米粒子以增强碳量子点溶液的光致发光性能。使用 Q-Switched Nd:YAG 激光在 4、8、12 和 16 分钟以稳定的激光能量烧蚀镀金板。分别使用紫外-可见光谱、傅里叶变换光谱和透射电子显微镜检查制备样品的光学性质、官能团和形貌。当烧蚀时间增加时，金纳米颗粒的尺寸从 20.69 nm 减小到 13.52，并且金纳米颗粒的等离子体质量因子和浓度增加。在金纳米粒子的存在下，光致发光碳量子点溶液的强度峰值增加，并使用光致发光光谱研究纯碳量子点与金纳米粒子/碳量子点与芘复合物之间的相互作用。因此，存在金纳米颗粒时光致发光峰的变化大于纯碳量子点存在下光致发光峰的变化。检测限为 1 ppm。因此，金纳米粒子不仅增强了 CQD 浴的光致发光性能，还改善了 CQD 与芘的相互作用。存在金纳米粒子时光致发光峰的变化大于纯碳量子点存在下光致发光峰的变化。检测限为 1 ppm。因此，金纳米粒子不仅增强了 CQD 浴的光致发光性能，还改善了 CQD 与芘的相互作用。存在金纳米粒子时光致发光峰的变化大于纯碳量子点存在下光致发光峰的变化。检测限为 1 ppm。因此，金纳米粒子不仅增强了 CQD 浴的光致发光性能，还改善了 CQD 与芘的相互作用。