Crayfish shells-derived carbon dots as a fluorescence sensor for the selective detection of 4-nitrophenol. Issue 1 (31st December 2023)

• Record Type: Journal Article
• Authors: Chen, Jiannan; Xia, Xiuhua; Li, Peizhen; Yu, Hang; Xie, Yunfei; Guo, Yahui; Yao, Weirong; Qian, He; Cheng, Yuliang
• Is Part Of: Food and agricultural immunology. Volume 34:Issue 1(2023)
• Page Start: 36
• Page End: 47
• Publication Date: 2023-12-31
• Subjects: Crayfish shells -- carbon dots -- fluorescence sensors -- 4-nitrophenol -- quenching mechanism; Immunochemistry -- Periodicals; Food -- Analysis -- Periodicals; Immunoassay -- Periodicals; 616.079
• DOI: 10.1080/09540105.2022.2139358
• Languages: English
• ISSNs: 0954-0105

Abstract

ABSTRACT: As a type of environmentally deleterious compound, 4-nitrophenol (4-NP) has become a global concern due to its extreme toxicity to aquatic organisms and humans. Herein, we used naturally available crayfish shells as precursors to prepare a new type of carbon dots (CDs) by the hydrothermal method. The as-synthesized CDs exhibited strong blue fluorescence emission which can be sensitively quenched by 4-NP through the static quenching effect because of the formation of a ground state complex between CDs and 4-NP. Accordingly, a facile and rapid fluorescence sensor was developed to detect 4-NP from 0 μM to 50 μM with a limit of detection (LOD) of 0.16 μM. Furthermore, the proposed sensor was successfully applied for the detection of 4-NP in fresh crayfish meat and aquatic water samples.