Picric Acid Mediated CdSe/ZnS Quantum Dots as Fluorescent Probe for Hydrogen Peroxide in Aqueous Media
苦味酸介导CdSe/ZnS量子点用于水环境双氧水的测定
作者: 王晓梅徐虎罗勇王宇红
作者单位: 1上海应用技术大学,化学与环境工程学院,上海
2聚烯烃催化技术与高性能材料国家重点实验室、上海市聚烯烃催化技术重点实验室(上海化工研究院有限公司),上海
刊名: Advances in Analytical Chemistry, 2018, Vol.08 (02), pp.39-50
中文刊名: 分析化学进展, 2018, Vol.08 (02), pp.39-50
来源数据库: Hans Pubs Journal
DOI: 10.12677/AAC.2018.82006
英文摘要: Hydrogen peroxide (H2O2) plays a very important role in many different areas, so establishing a kind of simple, sensitive, highly selective and stable method for hydrogen peroxide detection is very important. Because of the superior optical properties, semiconductor quantum dots as a flu-orescence probe have widely developed in various fields. In this study, in the presence of picric acid, the photoluminescence of a hydrophilic thioglycolic acid capped CdSe/ZnS quantum dots is significantly quenched. But the presence of hydrogen peroxide can recover the photoluminescence of quantum dots. Under the optimal conditions, the fluorescent probe can detect hydrogen peroxide in the range from 2 to 10 μM with the limit of detection ca. 0.18 μM. At the same time, the fluorescent probe exhibits the...
中文摘要: 双氧水(H2O2)在不同的领域发挥着十分重要的作用,因此建立一种简单、灵敏、高选择性和稳定的双氧水的检测方法是非常重要的。基于优越的光学特性,半导体纳米晶(也称量子点,quantum dots)作为荧光探针已在不同领域有所应用。在这项研究中,亲水巯基乙酸修饰的CdSe/ZnS量子点在苦味酸(PA)存在下荧光淬灭,而后续H2O2的加入可以恢复量子点荧光,因此该体系可用于检测水环境中的H2O2。在最优条件下,该探针的荧光恢复程度和双氧水的浓度在2~10 μM范围内具有很好的线性关系,检测限达到0.18 μM。同时,该荧光探针体系具有较高的H2O2选择性,对其他活性氮/活性氧表现出较高的抗干扰性能,该荧光探针被成功用于实际水样双氧水的检测。
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