适体
光电流
化学
量子点
检出限
兴奋剂
分析物
铟
线性范围
光电子学
纳米技术
分析化学(期刊)
材料科学
色谱法
生物
遗传学
有机化学
作者
Haolin Ding,Yixuan Feng,Yifei Xu,Xiaodong Xue,Rui Feng,Tao Yan,Qin Wei
出处
期刊:Talanta
[Elsevier]
日期:2022-04-01
卷期号:240: 123153-123153
被引量:4
标识
DOI:10.1016/j.talanta.2021.123153
摘要
A self-powered photoelectrochemical (PEC) aptasensor was constructed based on MIL-68(In) derived indium oxide hollow nanotubes (In2O3 HNs) and Ag-doped ZnIn2S4 quantum dots (QDs) as sensing matrix for the ultrasensitive detection of oxytetracycline (OTC). The hollow tube structure of the designed photoelectric active platform provided abundant active sites and a larger specific surface area for the immobilization of target recognition unit. The coupling of Ag:ZnIn2S4 QDs and In2O3 HNs can accelerate the transmit and separation of photoinduced charge, and thus greatly increasing the intensity of photocurrent signal. Then, the well-constructed OTC-aptamer was anchored on the modified photoelectrode as an accurate capturing element, achieving the specific detection of analyte. Under optimal conditions, the photocurrent intensity of the PEC aptasensor decreases linearly, with a linear response range of 10-4 -10 nmol/L, and a limit of detection (LOD) of 3.3 × 10-5 nmol/L (S/N = 3). The developed self-powered aptasensor with excellent reproducibility, stability, and selectivity, provides a potential way to detect antibiotic residues in environmental media.
科研通智能强力驱动
Strongly Powered by AbleSci AI