荧光
拉曼光谱
材料科学
X射线光电子能谱
傅里叶变换红外光谱
光致发光
碳纤维
纳米材料
生物相容性
透射电子显微镜
水热合成
热液循环
吸收(声学)
紫外线
吸收光谱法
纳米技术
化学工程
光化学
化学
光电子学
光学
复合数
复合材料
冶金
工程类
物理
作者
Shen Shen,Jiajia Fu,Hongbo Wang
标识
DOI:10.1002/slct.201902445
摘要
Abstract Carbon dots (CDs) are new fluorescent materials which have been sparked intense research due to their excellent properties, such as ultraviolet (UV) absorption, good biocompatibility, low toxicity, facile synthesis, low cost and tunable photoluminescence. Therefore, CDs appear to be a promising nanomaterials in many fields of application. Here, high quality carbon dots (named a‐CDs, b‐CDs, c‐CDs) were synthesized through a mild, facile hydrothermal method without any further modification using different carbon precursors and surfactants. Through carefully comparing and analyzing the three as‐prepared CDs samples, the c‐CDs exhibited exceptional advantages including high fluorescence intensity and satisfactory chemical stability. Then, the structures, morphologies, optical properties were characterized by X‐ray diffraction (XRD), X‐ray photoelectron spectroscopy (XPS), Fourier transform infrared spectroscopy (FTIR), UV–vis and fluorescence spectroscopic, Raman spectra and transmission electron microscope (TEM) in details. Our results verified that one‐step hydrothermal synthesis was a simple, efficient and green process for the preparation of carbon dots. The investigation on the unique characteristics can provide new recognition on the fluorescent carbon dots.
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