Institute of Chemical Industry of Forest Products, CAF; National Engineering Lab. for Biomass Chemical Utilization; Key Lab. of Chemical Engineering of Forest Products, National Forestry and Grassland Administration; Key Lab. of Biomass Energy and Material, Jiangsu Province; Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Nanjing, 210042, China.
Research Institute of Forestry New Technology, CAF, Beijing, 100091, China.
J Fluoresc. 2022 Mar;32(2):783-789. doi: 10.1007/s10895-021-02870-6. Epub 2022 Jan 29.
Selective and sensitive water content measurement in organic solvents is extremely significant for both industrial use and laboratory preparation. Carbon nanodots are promising carbon nanomaterials with unique and novel properties and thus have drawn growing attention. However, the hydrothermal approach for the preparation of carbon dots always uses water as solvent, and consequently, the development of carbon dots from biomass materials for fluorescence detection of water content remains unexplored. Here, carbon dots were prepared from gallic acid via a cheap and facile one-step method. The as-prepared carbon dots present excellent sensitivity and selectivity toward water content and exhibits good linear relationships with water content in range of 0-10%. The carbon dots demonstrated a strong antioxidation capacity and colour-reaction of Fe like gallic acid. The carbon dots also showed solid-state lighting.
有机溶剂中选择性和灵敏的含水量测量对于工业用途和实验室制备都非常重要。碳点是一种很有前途的碳纳米材料，具有独特而新颖的性质，因此引起了越来越多的关注。然而，用于制备碳点的水热法通常使用水作为溶剂，因此，利用生物质材料开发用于含水量荧光检测的碳点仍有待探索。在这里，我们通过一种廉价且简便的一步法，从没食子酸中制备了碳点。所制备的碳点对含水量具有优异的灵敏度和选择性，并在 0-10%的范围内表现出良好的线性关系。碳点表现出类似于没食子酸的强抗氧化能力和与铁的显色反应。此外，碳点还具有固态照明的功能。
