华侨大学学报(自然科学版)
華僑大學學報(自然科學版)
화교대학학보(자연과학판)
JOURNAL OF HUAQIAO UNIVERSITY(NATURAL SCIENCE)
2014年
5期
548-552
,共5页
石墨烯量子点%对苯二酚%柠檬酸%熔融法%荧光检测
石墨烯量子點%對苯二酚%檸檬痠%鎔融法%熒光檢測
석묵희양자점%대분이분%저몽산%용융법%형광검측
graphene quantum dots%hydroquinone%citric acid%melting method%fluorescence detection
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3.1 nmol·L-1,线性范围为1.0×10-7~5.0×10-6 mol·L-1.
以檸檬痠為碳源,採用一步鎔融法製備瞭石墨烯量子點,通過紅外光譜、紫外?可見吸收光譜、熒光光譜對其光學性能進行錶徵,同時攷察瞭石墨烯量子點耐光漂白能力和抗鹽性.該石墨烯量子點可應用于對苯二酚的檢測,其熒光彊度與對苯二酚濃度成良好的線性關繫(R2=0.979),方法的檢測限為3.1 nmol·L-1,線性範圍為1.0×10-7~5.0×10-6 mol·L-1.
이저몽산위탄원,채용일보용융법제비료석묵희양자점,통과홍외광보、자외?가견흡수광보、형광광보대기광학성능진행표정,동시고찰료석묵희양자점내광표백능력화항염성.해석묵희양자점가응용우대분이분적검측,기형광강도여대분이분농도성량호적선성관계(R2=0.979),방법적검측한위3.1 nmol·L-1,선성범위위1.0×10-7~5.0×10-6 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 fluores-cence 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 3.1 nmol·L-1 .