石墨烯量子点纤维素基荧光增强的探索  

Exploration of Enhanced Fluorescence of Cellulose Based Composite with Graphene Quantum Dots (GQDs)

作　　者：李金梅 卞喻 云娜[1] 向华[1,2] 王小萍 黄晶晶 高海彬 黄杰轮 潘嘉静 LI Jinmei;BI AN Yu;YUN Na;XIANG Hua;WANG Xiaoping;HUANG Jingjing;GAO Haibin(Guangdong Industry Polytechnic School of Chemical Engineering and Technology,Guangzhou 510300,China;Guangdong Patching Security Material and Design Engineering Technology Development Center,Guangzhou 510300,China)

机构地区：[1]广东轻工职业技术学院轻化工技术学院,广东广州510300 [2]广东省包印防伪材料与设计工程技术开发中心,广东广州510300

出　　处：《造纸科学与技术》2021年第6期20-23,共4页Paper Science & Technology

基　　金：广东省教育厅青年创新人才项目(2020KQNCX149);云娜创新创业工作室项目(KYRC2017-0037);广东高校省级重点平台及重点项目(2020ZDZX2092);广东省包印防伪材料与设计工程技术开发中心(2019GGCZX001);向华20年珠江学者特聘教授2209(163200003)。

摘　　要：以环保性为原则,选用柠檬酸作碳源,反应物为二乙基三胺及聚乙烯亚胺,以反应物浓度3%、时间10h、温度180℃为最佳反应条件,分别采用一步加热法和两步加热浸泡法,将水和乙醇、乙醇稀释石墨烯量子点悬浮液分别对纤维基荧光增强效果进行探究,设计出光致发光效果极佳的石墨烯量子点纤维基复合产物。在照明灯和紫外灯照射及高灵敏度荧光光谱仪的检测显示,采用两步加热浸泡法,先制备石墨烯量子点的悬浮液,以乙醇作稀释剂稀释其悬浮液,浓度达到2%时,用365 nm的光照射石墨烯量子点纤维基复合产物可以发射出最亮的荧光。The fiber-based composite with graphene quantum dots(GQDs) were prepared by one step hydrothermal method or two-step heating method with citric acid as carbon source and diethylenetriamine and polyethylene imine as reagents. The optimal reaction conditions were as follows: the concentration of reactant was 3%, the reaction time was 10 h, and the reaction temperature was 180℃. The fluorescence enhancement experiment was carried out with water, ethanol, and ethanol-diluted graphene quantum dot suspension respectively. The detection by floodlight and ultraviolet lamp irradiation the high-sensitivity fluorescence spectrometer showed that the fiber-based composite with GQDs prepared by two-step heating method with 2% reactant concentration and ethanol was used as a diluent have the strongest fluorescence phenomenon under the excitation light action of 365 nm.

关 键 词：石墨烯量子点 纤维基 两步加热浸泡法 荧光增强 

分 类 号：TS75[轻工技术与工程—制浆造纸工程]