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Glutathione assisting the waste tobacco leaf to synthesize versatile biomass-based carbon dots for simultaneous detection and efficient removal of mercury ions TEXT SIZE: A A A
High-efficient conversion of the waste biomass into eco-friendly novel bifunctional materials for selective monitoring and effective removal of mercury ions (Hg2+) is of great significance to achieve the environment sustainable development, but has not attracted enough attention. Herein, we exploited glutathione (GSH) assisting waste tobacco leaf as the biomass-related precursors to successfully yield a novel red fluorescence emission biomass-based carbon nanodots (CDs) with a remarkably large Stokes shift of similar to 232 nm through one -pot hydrothermal method. Owing to the synergistic Hg-S bond and the coordination effects of the Hg2+ to the abundant -COOH, -NH2 and -OH groups on the surface of CDs, this proposed biomass-based CDs showed a red fluorescence decrease response for Hg2+ with a high selectivity and a lower detection limit of 0.45 mu M in environmental water samples. Furthermore, this binding endowed this proposed biomass-based CDs possessed a high removal efficiency of above 99.4% for Hg2+ as well. This work showed a novel insight into recycling the waste tobacco leaf into novel, economic, efficient, reliable, and eco-friendly biomass-based CDs for simulta-neously precise traceability and high-efficient removal of Hg2+ pollution in environmental matrices.

Publication name

 Journal Of Environmental Chemical Engineering, Volume 10, Issue 6, Article Number 108718, DOI 10.1016/j.jece.2022.108718, Published DEC 2022


 Yang, Hui; Su, Xiankun; Cai, Li; Sun, Zhenchun; Lin, Yechun; Yu, Jing; Hao, Likai; Liu, Cui

Corresponding author(s) 

 Hao, Likai
 Chinese Acad Sci, Inst Geochem, State Key Lab Environm Geochem, Guiyang 550081, Peoples R China

 Liu, Cui
 Xi An Jiao Tong Univ, Hlth Sci Ctr, Sch Basic Med Sci, Inst Med Engn,Dept Biophys, Xian 710061, Peoples R China

Author(s) from IGCAS   Hao, Likai; Yang, Hui

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