期刊
MICROCHIMICA ACTA
卷 186, 期 3, 页码 -出版社
SPRINGER WIEN
DOI: 10.1007/s00604-019-3298-8
关键词
Electroanalysis; Electrochemical sensor; Graphene nanocomposite; Food sample; Antibiotic detection
资金
- National Natural Science Foundation of China [21645007, 21475071]
- Taishan Scholar Program of Shandong Province [ts201511027]
- Natural Science Foundation of Shandong [ZR2016BM21]
Porous carbon was prepared from a zeolitic imidazolate framework (type ZIF-8) by carbonization at 800 degrees C (Z-800). A hybrid material was then obtained by direct co-electrodeposition of Z-800 with graphene oxide (Z-800/rGO). Z-800 is N-doped with good electrical conductivity and displays electrocatalytic activity. Z-800 readily undergoes mass transfer and also prevents graphene to agglomerate during electroanalysis. The hybrid was placed on a glassy carbon electrode (GCE) to obtain an electrochemical sensor for chloramphenicol (CAP) detection. Under the optimized conditions, the response of the modified GCE (typically measured at a low potential of -0.07V vs. Ag/AgCl) is linear in the 1 to 180M CAP concentration range with a 0.25M detection limit (S/N=3). In our preception, the method has a wide scope in that it may be applied to the preparation of various kinds of other (doped) porous carbon/rGO composites for use in (bio)chemical sensors.
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