期刊
TALANTA
卷 176, 期 -, 页码 573-581出版社
ELSEVIER
DOI: 10.1016/j.talanta.2017.08.083
关键词
ZnO nanotubes (ZNTs); Molecularly imprinted polymers (MIPs); Arrays; Dopamine; Electrochemical sensor
资金
- National Natural Science Foundation of China [21203053, 21271064, 61306016, 21603058]
- Joint Talent Cultivation Funds of NSFC-HN [U1204214, U1604138]
- Innovation Research Team of Science and Technology in Henan Province [16IRTSTHNO19, 17IRTSTHNO28]
- Science and Technology Innovation Talents in Universities of Henan Province [18HASTIT016]
- Program for Changjiang Scholars and Innovative Research Team in University [PCS IRT1126]
- Young Key Teacher Foundation of Henan Province's Universities [2015GGJS-022]
In this study, ZnO nanotubes (ZNTs) were prepared onto fluorine-doped tin oxide (FTO) glass and used as supports for MIPs arrays fabrication. Due to the imprinted cavities are always located at both inner and outer surface of ZNTs, these ZNTs supported MIPs arrays have good accessibility towards template and can be used as sensing materials for chemical sensors with high sensitivity, excellent selectivity and fast response. Using K-3[Fe(CN)(6)] as electron probe, the fabricated electrochemical sensor shows two linear dynamic ranges (0.02-5 mu M and 10-800 mu M) towards dopamine. This proposed electrochemical sensor has been applied for dopamine determination with satisfied recoveries and precision. More complex human urine samples also confirmed that the proposed method has good accuracy for dopamine determination in real biological samples. These results suggest potential applicability of the proposed method and sensor in important molecule analysis.
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