Solvent-Free Pyrolysis Strategy for the Preparation of Biomass Carbon Dots for the Selective Detection of Fe3+ Ions
文献类型： 外文期刊
作者： Chen, Menglin 1 ; Zhai, Jichao 3 ; An, Yulong 3 ; Li, Yan 3 ; Zheng, Yunwu 3 ; Tian, Hao 4 ; Shi, Rui 2 ; He, Xiahong 2 ; Liu, Can 3 ; Lin, Xu 1 ;
作者机构： 1.Southwest Forestry Univ, Natl Joint Engn Res Ctr Highly Efficient Utilizat, Yunnan Key Lab Wood Adhes & Glued Prod, Kunming, Peoples R China
2.Southwest Forestry Univ, Key Lab Forest Resources Conservat & Utilizat Sout, Minist Educ, Kunming, Peoples R China
3.Natl Joint Engn Res Ctr Highly Efficient Utilizat, Kunming, Peoples R China
4.Yunnan Acad Agr Sci, Agroprod Proc Res Inst, Kunming, Peoples R China
关键词： solvent-free pyrolysis; lignin; cellulose; biomass carbon dots; metal ion detection
期刊名称：FRONTIERS IN CHEMISTRY （ 影响因子：5.545； 五年影响因子：5.869 ）
ISSN： 2296-2646
年卷期： 2022 年 10 卷
页码：
收录情况： SCI
摘要： Biomass carbon dots (BCDs) have the advantages of being nontoxic, low cost and simple to prepare, have excellent optical properties, good biocompatibility and stability, and therefore have broad application prospects in areas such as heavy metal ion detection and optoelectronic devices. Herein, a simple, green, solvent-free method of preparing BCDs was developed. CDs with certain fluorescence properties were prepared by a solvent-free pyrolysis method at different temperatures using two abundant components (cellulose and lignin) of biomass resources as carbon sources. Both the cellulose CDs prepared at 300 degrees C and the lignin CDs prepared at 350 degrees C exhibited high quantum yields of 11.7% and 23.4%, respectively, a result that was mainly due to the high degree of graphitization. The analysis and results demonstrated the selectivity of CDs for the detection of various metal ion solutions. In particular, CDs are sensitive to Fe3+ and can be used as a fluorescent sensor for the detection of Fe3+, providing a more efficient, sustainable alternative for metal ion detection.
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