文献类型：期刊文献

英文题名：Carbon quantum dots derived from marine Eucheuma denticulatum for the efficient and sensitive detection of tetracycline

作者：Li, Wanjun[1];Luo, Kun[1];Lv, Mingzhe[2];Wen, Yanmei[1]

机构：[1]Guangdong Ocean Univ, Fac Chem & Environm Sci, Zhanjiang 524088, Peoples R China;[2]Chinese Acad Trop Agr Sci, Inst Agr Prod Proc Res, Zhanjiang 524001, Peoples R China

年份：2024

卷号：26

期号：4

外文期刊名：JOURNAL OF NANOPARTICLE RESEARCH

收录：SCI-EXPANDED(收录号：WOS:001195262100002)、、EI(收录号：20241415842299)、Scopus(收录号：2-s2.0-85189171256)、WOS

基金：No Statement Available

语种：英文

外文关键词：Eucheuma denticulatum; Carbon quantum dots; Fluorescent; Tetracycline detection

外文摘要：In this study, Eucheuma denticulatum marine algae were used as the raw material to prepare Eucheuma denticulatum-derived carbon quantum dots (E-CQDs) via a mild chemical oxidation method. The E-CQDs demonstrated good stability and water solubility owing to the presence of hydroxyl groups on the surface. The structure and chemical composition of the E-CQDs were characterized by three means, including transmission electron microscopy (TEM), Fourier transform infrared (FT-IR) spectroscopy, and X-ray photoelectron spectroscopy (XPS). The E-CQDs maintained exceptional stability under varying ion concentrations, pH levels, ultraviolet (UV) irradiation durations, and temperatures. The fluorescence quenching effect of tetracycline (TC) on the E-CQDs was utilized to establish a sensitive and selective TC fluorescence detection method. The mechanism of the TC quenching of the fluorescence of E-CQDs involved an internal filtration effect and dynamic quenching. At the TC concentration of 20-100 mu M, the fluorescence intensity showed an excellent linear relationship (R-2 = 0.997); the limit of detection and quantity was 0.47 mu M and 1.57 mu M, respectively. These results revealed that this method for TC detection offers good selectivity and immunity to interference.