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Cationic metal phthalocyanine/carbon nano-tube self-assembled membrane electrode and preparation method thereof

A metal phthalocyanine and carbon nanotube technology, which is applied in the field of cationic metal phthalocyanine/carbon nanotube self-assembled membrane electrodes and their preparation, can solve the problems of unstable electrochemical properties, low surface coverage, complex process and the like , to achieve the effect of improving electrocatalytic activity, firm membrane material, and simple operation

Inactive Publication Date: 2014-12-10
HEILONGJIANG UNIV
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

[0004] The present invention provides a cationic metal phthalocyanine in order to solve the problems of uneven coverage, low surface coverage, unstable electrochemical properties, complex process, high cost and environmental pollution in the preparation method of the existing membrane electrodes. / Carbon nanotube self-assembled film electrode and preparation method thereof

Method used

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  • Cationic metal phthalocyanine/carbon nano-tube self-assembled membrane electrode and preparation method thereof
  • Cationic metal phthalocyanine/carbon nano-tube self-assembled membrane electrode and preparation method thereof
  • Cationic metal phthalocyanine/carbon nano-tube self-assembled membrane electrode and preparation method thereof

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specific Embodiment approach 1

[0024] Embodiment 1: A cationic metal phthalocyanine / carbon nanotube self-assembled film electrode of this embodiment is to alternately assemble positively charged cationic metal phthalocyanine layers and negatively charged carbon nanotubes on a negatively charged substrate layers to form a multilayer film electrode with alternating cationic metal phthalocyanine layers and carbon nanotube layers.

[0025] ① The surface molecules of the cationic metal phthalocyanine / carbon nanotube self-assembled membrane electrode prepared in this embodiment are arranged uniformly and orderly, and grow layer by layer with equal thickness.

[0026] ② The cationic metal phthalocyanine / carbon nanotube self-assembled film electrode prepared in this embodiment has excellent electrocatalytic performance, and its linear range is as wide as 0.1-10 mmol L -1 , the detection limit is as low as 10μmol L -1 , the sensitivity is 0.051mA·L·mol-1 .

[0027] ③ The cationic metal phthalocyanine / carbon nanotu...

specific Embodiment approach 2

[0030] Embodiment 2: The difference between this embodiment and Embodiment 1 is that the positively charged cationic metal phthalocyanine layer and the negatively charged carbon nanotubes in the cationic metal phthalocyanine / carbon nanotube self-assembled film electrode The number of layers is the same, 4 to 30 layers. Other steps and parameters are the same as those in the first embodiment.

specific Embodiment approach 3

[0031] Embodiment 3: The difference between this embodiment and Embodiment 1 or 2 is that the general structural formula of the cationic metal phthalocyanine in the positively charged cationic metal phthalocyanine layer is as follows:

[0032] where M is Co 2+ , Fe 2+ 、Ni 2+ 、Cu 2+ , Zn 2+ , Pd 2+ , Pb 2+ or Mn 2+ . Other steps and parameters are the same as those in Embodiment 1 or 2.

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Abstract

The invention belongs to the field of electrochemical / biological sensors, and in particular relates to a cationic metal phthalocyanine / carbon nano-tube self-assembled membrane electrode and a preparation method thereof, aiming to solve the problems that an existing membrane electrode is non-uniform in surface coverage, low in surface coverage rate and non-steady in electrochemical property, and an existing preparation method is complex in process and high in cost and pollutes the environment. The cationic metal phthalocyanine / carbon nano-tube self-assembled membrane electrode is obtained by alternatively assembling a cationic metal phthalocyanine layer with positive charge and a carbon nano-tube layer with negative charge on a substrate with negative charge and forming a multi-layer membrane electrode with the cationic metal phthalocyanine layer and the carbon nano-tube layer which are alternative. The preparation method disclosed by the invention comprises the following steps: (1), preparing a cationic metal phthalocyanine aqueous solution; (2), preparing carbon nano-tube dispersion liquid; (3), pre-processing the substrate; and (4), preparing the cationic metal phthalocyanine / carbon nano-tube self-assembled membrane electrode.

Description

technical field [0001] The invention belongs to the field of electrochemical / biological sensors, in particular to a cationic metal phthalocyanine / carbon nanotube self-assembled film electrode and a preparation method thereof. Background technique [0002] The commonly used membrane electrode preparation methods are divided into drop coating method, adsorption method, electrochemical method, doping method and covalent bonding method. The drop coating method is difficult to accurately control the amount of film-forming material and the film thickness is uneven, so the electrode reproducibility is poor, and the surface coverage is greatly affected by the physical properties of the modification liquid (Yin H.S. et al., Food Chem, 125 (2011 ) 1097-1103). The membrane electrode prepared by the covalent bonding method has stable chemical properties, and can complete the formation of the electrode surface microstructure according to the pre-designed scheme. However, due to the cum...

Claims

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Application Information

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IPC IPC(8): G01N27/333
Inventor 陈志敏张佳琳郭良宵王彬贺春英吴谊群
Owner HEILONGJIANG UNIV
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