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Label-Free Electrochemical Aptasensor Based on Stone-like Gold Nanoparticles for Ultrasensitive Detection of Tetracycline
Xie, Beibei1; Peng, Haibo2; Zhang, Ruixue1; Wang, Chenhui1; He, Yun1
2021-03-18
摘要The widespread use of tetracycline (TET) for controlling bacterial infections has led to its residues and accumulation in animal food and the environment, which leads to a serious threat to food safety and environmental protection. Therefore, it is essential to develop a sensitive method to detect the residue TET. In this work, the stone-like Au nanoparticles (SL-AuNPs) possessing a large size and large exposed active surfaces were prepared with a porous N-doped carbon aerogel (NCA) featuring high N atom content and a large specific surface area. Combining the advantages of NCA and SL-AuNPs, the co-assembly of SL-AuNPs and NCA (NCA@SL-AuNPs) enables it to be an ultrasensitive electrochemical aptasensor for tetracycline (TET) detection with a larger linear range (10(-15)-10(-11) M) and a lower detection limit (3.2 x 10(-16) M) than the previously reported aptasensor. Importantly, NCA@SL-AuNPs also exhibit excellent performance for detecting TET in milk.
DOI10.1021/acs.jpcc.0c10809
发表期刊JOURNAL OF PHYSICAL CHEMISTRY C
ISSN1932-7447
卷号125期号:10页码:5678-5683
通讯作者Wang, Chenhui(wangchenhui@cqu.edu.cn) ; He, Yun(yun.he@cqu.edu.cn)
收录类别SCI
WOS记录号WOS:000631433100026
语种英语