Self-Assembly of Tetrakis (3-Trifluoromethylphenoxy) Phthalocyaninato Cobalt(II) on Multiwalled Carbon Nanotubes and Their Amperometric Sensing Application for Nitrite
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- 作者：Pan Li ; Yu Ding ; Ao Wang ; Lin Zhou ; Shaohua Wei ; Yiming Zhou ; Yawen Tang ; Yu Chen ; Chenxin Cai ; Tianhong Lu
- 刊名：ACS Applied Materials & Interfaces
- 出版年：2013
- 出版时间：March 27, 2013
- 年：2013
- 卷：5
- 期：6
- 页码：2255-2260
- 全文大小：352K
- 年卷期：v.5,no.6(March 27, 2013)
- ISSN：1944-8252
文摘
In this work, the soluble cobalt phthalocyanine functionalized multiwalled carbon nanotubes (MWCNTs) are synthesized by 蟺鈥撓€ stacking interaction between tetrakis (3-trifluoromethylphenoxy) phthalocyaninato cobalt(II) (CoPcF) complex and MWCNTs. The physical properties of CoPcF-MWCNTs hybrids are evaluated using spectroscopy (UV鈥搗is, XPS, and Raman) and electron microscopy (TEM and SEM). Subsequently, an amperometric nitrite electrochemical sensor is designed by immobilizing CoPcF-MWCNTs hybrids on the glassy carbon electrode. The immobilized CoPcF complex shows the fast electron transfer rate and excellent electrocatalytic activity for the oxidation of nitrite. Under optimum experimental conditions, the proposed nitrite electrochemical sensor shows the fast response (less than 2 s), wide linear range (9.6 脳 10鈥? to 3.4 脳 10鈥? M) and low detection limit (6.2 脳 10鈥? M) because of the good mass transport, fast electron transfer rate, and excellent electrocatalytic activity.