摘要
【目的】探究竹节隔碳量子点绿色制备方法,提高废弃生物质材料利用效率和附加值。【方法】以竹材废弃物竹节隔为初始碳源,水为溶剂,采用一步水热法制备荧光碳量子点,通过透射电子显微镜、X射线衍射、红外光谱仪、X射线光电子能谱仪、紫外可见光光度计、荧光光谱等表征手段,对竹节隔碳量子点的微观形貌、化学结构和光学特性进行了表征与分析。【结果】所制备的竹节隔碳量子点形状为近圆形,其粒径分布为0~1.6 nm;绝对荧光量子产率为6.85%;具有优异的荧光特性,在365 nm波长紫外灯下呈现明显的蓝色荧光。【结论】制备的竹节隔碳量子点水溶液绿色环保、性能良好,可通过进一步优化设计,以期应用于家具木制品及人造板等木质材料荧光防伪领域。
[Objective]The objective is to achieve a green method for the preparation of bamboo carbon quantum dots and to improve the utilization efficiency and added value of waste biomass materials.[Method]Fluorescent carbon quantum dots were prepared by a one-step hydrothermal method using bamboo waste materials(bamboo septa)as the initial carbon source and water as the solvent.The micro-morphology,chemical structure and optical properties of the carbon quantum dots of bamboo septa were characterized and analyzed by means of transmission electron microscopy,X-ray diffraction,infrared spectrometry,X-ray photoelectron spectroscopy,UV-visible photometry and fluorescence spectroscopy.[Result]The shape of the prepared carbon quantum dots had a near-circular shape,with a size distribution of 0-1.6 nm.The absolute fluorescence quantum yield was 6.85%,and they had excellent fluorescence properties,with a blue fluorescence under a 365 nm ultraviolet lamp.[Conclusion]The prepared carbon quantum dots aqueous solution is environmentally friendly and has good performance,which can be further optimized for application in the field of fluorescence anti-counterfeiting of wood materials such as furniture wood products and artificial boards.
作者
刘妍
李荣荣
LIU Yan;LI Rongrong(School of Furnishings and Industrial Design,Nanjing Forestry University,Nanjing 210037,Jiangsu,China)
出处
《浙江农林大学学报》
北大核心
2025年第2期402-409,共8页
Journal of Zhejiang A&F University
基金
国家自然科学基金资助项目(32201642)。
关键词
竹节隔
碳量子点
荧光
荧光防伪
bamboo septum
carbon quantum dots
fluorescence
fluorescent anti-counterfeiting
作者简介
刘妍(ORCID:0009-0007-4455-6069),从事生物质功能材料制备研究。E-mail:lyan@njfu.edu.cn;通信作者:李荣荣(ORCID:0000-0002-0485-3188),副教授,博士,从事家具智能制造技术与设备、木质材料先进加工技术研究。E-mail:rongrong.li@njfu.edu.cn。
