X射线光电子能谱
荧光
材料科学
热液循环
分析化学(期刊)
量子产额
猝灭(荧光)
紫外线
拉曼光谱
离子
碳纤维
傅里叶变换红外光谱
光谱学
透射电子显微镜
核化学
纳米技术
化学
光学
光电子学
核磁共振
物理
化学工程
工程类
复合数
量子力学
复合材料
色谱法
有机化学
作者
Shunsheng Zhao,Ya‐Kun Wang,Zaiwen Yang,Xiangrong Liu,Zheng Yang,Xiaodan Jia,Ci Song,Yubo Wang,Xinjuan Chen
出处
期刊:NANO
[World Scientific]
日期:2021-10-28
卷期号:16 (13)
被引量:5
标识
DOI:10.1142/s1793292021501563
摘要
Carbon dots (CDs) synthesized from natural products received considerable attention due to their unique properties. In this work, CDs were synthesized using Luochuan Red Fuji apple peels as carbon source (Ap-CDs) by direct hydrothermal reaction, and were characterized by Transmission Electron Microscope (TEM), X-ray Diffraction (XRD), Raman spectra, Fourier-transform infrared (FT-IR) spectroscopy, X-ray photoelectron spectroscopy (XPS), Ultraviolet and visible (UV-Vis) absorption spectra and Fluorescence (FL) spectroscopy. The effect of reaction temperature, reaction time and the amount of carbon source used on the fluorescent intensity of Ap-CDs was studied. Fluorescent properties measurement indicated that when irradiated by ultraviolet at the wavelength of 350[Formula: see text]nm, the Ap-CDs give out bright blue emitting at the maximum wavelength of 433[Formula: see text]nm with quantum yield of 9.43%. Meanwhile, it was found that the fluorescent intensity of Ap-CDs could be selectively quenched by Fe[Formula: see text] ions. The fluorescent quenching of Ap-CDs was linearly related to the concentration of Fe[Formula: see text] ion in the range of 0.05–300[Formula: see text][Formula: see text]M with the detection limit of 1.56[Formula: see text][Formula: see text]M. Accordingly, the concentration of Fe[Formula: see text] ion in the tap water and pork liver samples were tried to be measured by the fluorescent quenching Ap-CDs.
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