中文关键词:荧光碳点，微波加热，酵母粉，Fe3+检测 英文关键词:fluorescent carbon dots, microwave heating, yeast powder, Fe3+ detecting 基金项目:(37120620,81641134)资助

作者	单位	E-mail
衣同辉	齐齐哈尔医学院医学技术学院	yitonghui@126.com
李奕姗	大连理工大学食品与环境学院
郭晓倩	大连理工大学食品与环境学院
朱子含	大连理工大学食品与环境学院
柳婷	大连理工大学食品与环境学院
谢蕾	大连理工大学食品与环境学院
王洁	齐齐哈尔医学院医学技术学院
郭峰	大连理工大学食品与环境学院	0411guofeng@dlut.edu.cn

摘要点击次数:1166 全文下载次数:0 中文摘要: 荧光碳点作为一种新型碳材料,广泛应用在光催化、生物成像、靶向给药和电化学等方面。本文使用酵母粉作为碳点合成的起始原料,经微波加热的一步法获得高效荧光碳点,碳点产率达到55%,其荧光量子产率高达35%。分别用紫外-可见光分光光度计、荧光光谱仪、TEM和FT-IR对碳点的微观形貌、表面官能团和光学性质进行了表征。随后考察了碳点在定量检测Fe₃₊等废水污染物中的应用,发现碳点作为一种荧光探针在亲水溶液中可以有效的检测Fe₃₊,当碳点的质量浓度为0.003%时,有较广的Fe₃₊检测阈限(0.00025～520 ppm)、较高的选择性和敏锐性。 英文摘要: Fluorescent carbon dots, a new type of carbon material, haves been widely used in photocatalysis, biological imaging, targeted drug delivery and electrochemical catalysis. In this article, yeast powder has been chosen as start materials for carbon dots preparation via one-pot process. Under the condition of microwave-assisted heating, a fluorescent quantum yield of 35% was achieved. The optical properties and microscopic morphology of carbon dots were further charactierized by using TEM, FT-IR, and scan of fluorescent spectra. It is found that the particles size of carbon dots range from 5 to 10 nm. It has abundant surficial nitrogen-containing groups, which can effectively adjust the charge density and bandwidth gap of the conjugated plane. Furthermore, carbon dots were used as an effective fluorescent probe for the detection of Fe3+ in aqueous solution. Carbon dots performed good selectivity and sensitivity to Fe3+. When the concentration of Carbon dots is 0.003 wt %, the testing range is 0.00025～520 ppm. 查看全文查看/发表评论下载PDF阅读器 相关附件：版权 -->