摘要
以百香果壳为原材料,采用水热法合成荧光碳量子点(CQDs),考察了碳量子点(CQDs)对Fe^(3+)的检测效果。利用透射电子显微镜(TEM)、X射线衍射(XRD)、红外光谱仪(FT-IR)、紫外-可见吸收光谱仪、荧光光谱仪等对碳量子点(CQDs)的形貌、结构、基团、光谱特性等进行了表征。结果显示,合成的碳量子点形貌和分散性良好,尺寸约为7 nm。在435 nm的激发波长下,其发射峰位于512 nm处。在反应温度为120℃,反应时间为12 h时,所得到的碳量子点的性能最好。Fe^(3+)对CQDs荧光有明显的猝灭现象,而其他金属离子的加入不会改变CQDs的荧光强度及发射峰位置,说明合成的CQDs可以实现对Fe^(3+)的特异性检测。
Fluorescent carbon quantum dots(CQDs)are synthesized from passion fruit shell by hydrothermal method.The detection effect of carbon quantum dots(CQDS)on Fe^(3+)is evaluated.Transmission electron microscopy(TEM),X-ray diffraction(XRD),FT-IR,UV-Vis absorption spectroscopy and fluorescence spectroscopy are employed to characterize the morphology,structure,groups and spectral characteristics of CQDs.The results show that the synthesized CQDs have good morphology and dispersion,and a size of around 7 nm.Under 435 nm of excitation wavelength,the emission peak is at 512 nm.The synthesized CQDs have the best performance when the reaction temperature is 120℃and the reaction time is 12 h.Fe^(3+)has obvious quenching effect on the fluorescence of CQDS,while the fluorescence intensity and emission peak position of CQDs cannot be changed by the addition of other metal ions,indicating that the synthesized CQDS can achieve the specific detection to Fe^(3+).
作者
丁立
管朦
李家耀
施扬范
韩维杰
刘新梅
DING Li;GUAN Meng;LI Jia-yao;SHI Yang-fan;HAN Wei-jie;LIU Xin-mei(Guangxi Key Laboratory of Green Processing of Sugar Resources,College of Biological and Chemical Engineering,Guangxi University of Science and Technology,Liuzhou 545006,China)
出处
《现代化工》
CAS
CSCD
北大核心
2022年第6期232-236,共5页
Modern Chemical Industry
基金
国家级(广西)大学生创新创业训练计划资助项目(202010594046)
广西糖资源绿色加工重点实验室开放基金(GXTZY202001)。
关键词
百香果壳
水热法
碳量子点
Fe^(3+)检测
passion fruit shell
hydrothermal method
carbon quantum dots
detection of Fe^(3+)