Construction of a label-free electrochemical immunosensor based on a Co9S8/Co3C@C dual-heterojunction for the detection of diethylstilbestrol
NEW JOURNAL OF CHEMISTRY(2023)
摘要
Building heterogeneous structures can increase the rate of electron transport, generate synergistic effects, and get around the limitations of a single component. In order to create a label-free electrochemical immunological sensor, we created nanosheets with a dual-heterogeneous structure (Co9S8/Co3C@C) using ZIF-67. Diethylstilbestrol (DES) was detected sensitively in environmental samples (groundwater and lake water). This sensor has an acceptable detection ability, a wide linear response (0.000384-6 ng mL(-1)), and a low detection limit (3.24 fg mL(-1)) due to the excellent conductivity of the nanosheets. The stability, selectivity, and sensitivity of the electrochemical immunosensor are satisfactory. It is an effective, practical, and quantitative detection technique.
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关键词
label-free,dual-heterojunction
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