石墨烯量子点对对苯二酚的检测  

Detection of Hydroquinone by Graphene Quantum Dots

作　　者：刘鹏超[1] 孙向英[1] 杨传孝[1] 

机构地区：[1]华侨大学材料科学与工程学院,福建厦门361021

出　　处：《华侨大学学报（自然科学版）》2014年第5期547-551,共5页Journal of Huaqiao University(Natural Science)

基　　金：国家自然科学基金资助项目(21275059;21175049);福建省自然科学基金资助项目(2012J01044;2011J01049)

摘　　要：以柠檬酸为碳源,采用一步熔融法制备了石墨烯量子点,通过红外光谱、紫外-可见吸收光谱、荧光光谱对其光学性能进行表征,同时考察了石墨烯量子点耐光漂白能力和抗盐性.该石墨烯量子点可应用于对苯二酚的检测,其荧光强度与对苯二酚浓度成良好的线性关系（R2=0.979）,方法的检测限为3.1nmol·L^-1,线性范围为1.0×10^-7-5.0×10^-6 mol·L^-1.With citric acid as carbon source,graphene quantum dots was prepared by one-step melting method.The spectral properties of the graphene quantum dots was characterized by FTIR,UV-visible absorption spectra and fluorescence spectra.In addition,its ability of light bleaching and salt resistance were investigated.Then,the graphene quantum dots was used for the detection of hydroquinone by a fluorescent sensor.The fluorescence intensity of graphene quantum dots and the concentration of hydroquinone exhibited a good linear relationship（R2=0.979） with a wide concentrations range of 1.0×10^-7-5.0×10^-6 mol·L^-1 as well as the limit of detection was calculated to be 3.1nmol·L^-1.

关 键 词：石墨烯量子点 对苯二酚 柠檬酸 熔融法 荧光检测 

分 类 号：O657.3[理学—分析化学]