Nitrogen-doped carbon dots derived from mangosteen peel for the detection of Cr2O72-and and vanillin

被引:0
作者
Chen, Yaxuan [1 ]
Guo, Yushi [1 ]
Xing, Zhiqiang [1 ]
Bai, Lu [1 ]
Yang, Wenxiao [1 ]
Wu, Qiuhua [1 ]
Zhang, Guolin [1 ]
机构
[1] Liaoning Univ, Liaoning Prov Key Lab Green Synth & Preparat Chem, Coll Chem, Shenyang 110036, Peoples R China
关键词
Mangosteen peel; Carbon dots; Fluorescent probe; Vanillin; SOLID-PHASE MICROEXTRACTION; ETHYL-VANILLIN; FLUORESCENCE; NANOPARTICLES; PROBE;
D O I
10.1016/j.jphotochem.2024.115945
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Nitrogen-doped biomass carbon dots (MP-NCDs) based on mangosteen peel were prepared by one-step hydro- thermal method. Transmission electron microscopy demonstrated that MP-NCDs were spherical and their particle size ranged from 2.6 to 5.0 nm. X-ray photoelectron spectroscopy indicated that they were composed of C, N, and O elements. Fourier transform infrared revealed that their surface was equipped with oxygen-containing and amino-containing groups. Bright blue light emission characteristics were demonstrated. They had high light stability in aqueous solution and salt solution. Furthermore, MP-NCDs could be utilized as a bifunctional fluorescent probe for detecting Cr 2 O 7 2- and vanillin through the fluorescence quenching method, which exhibited high selectivity, sensitivity, and anti-interference performance. The detection limits of vanillin and Cr 2 O 7 2- by MP-NCDs were determined to be 2.33 mu M and 4.6 mu M, respectively. A detailed analysis was conducted on the fluorescence quenching mechanism. The performance of the sensing system was tested in real samples using river water and infant formula as models.
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页数:8
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