期刊
JOURNAL OF SOLID STATE ELECTROCHEMISTRY
卷 19, 期 4, 页码 1103-1112出版社
SPRINGER
DOI: 10.1007/s10008-014-2715-5
关键词
Functionalized multiwalled carbon nanotube (fMWCNT); Yttrium hexacyanoferrate; Rose flower petals; Catechin; Real sample
资金
- Ministry of Science and Technology, Taiwan (ROC)
We report the hierarchical growth of yttrium (III) hexacyanoferrate (YHCF), having a shape that resembles that of rose flower petals on a glassy carbon electrode (GCE) modified with functionalized multiwalled carbon nanotubes. The modified GCE displays excellent electrocatalytic activity toward catechin (CA) oxidation. The morphology and impedimetric response of YHCF were optimized by controlling the number of depositing cycles. As-synthesized YHCF micro flower was characterized by thin film X-ray diffraction (XRD) and infrared (IR) spectroscopic methods, respectively. By taking the advantage of a template-free, surfactant-less, and simple procedure, YHCF micro flowers have been prepared. The sensitivity and low detection limit of functionalized multiwalled carbon nanotube (fMWCNT)/YHCF/GCE toward CA are 1.311 mu A mu M-1 cm(-2) and 0.28 mu M, respectively. Moreover, the fabricated GCE exhibits sufficient recovery for CA determination in green tea and oolong tea samples.
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