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Electrodeposition sensor based on polypyrrole (PPy)/metal porphyrin and preparation method and application of electrodeposition sensor

A metalloporphyrin and porphyrin electricity technology, applied in the direction of electrolytic organic material coating and other directions, can solve the problems of low conductivity at room temperature and cannot be used as a sensor or energy storage material, etc., and achieve a simple preparation process, good recycling performance, good gas The effect of sensitivity

Inactive Publication Date: 2019-03-08
WUHAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the room temperature conductivity of pure PPy polymer is low (about 8S / cm), which cannot be used as a sensor or energy storage material.

Method used

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  • Electrodeposition sensor based on polypyrrole (PPy)/metal porphyrin and preparation method and application of electrodeposition sensor
  • Electrodeposition sensor based on polypyrrole (PPy)/metal porphyrin and preparation method and application of electrodeposition sensor
  • Electrodeposition sensor based on polypyrrole (PPy)/metal porphyrin and preparation method and application of electrodeposition sensor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] (1) Take 0.60g tetrakis (4-sodium sulfonate) phenyl porphyrin tpps 4 with 1.68g Zn(OAc) 2 2H 2 O was dissolved in 80 mL of deionized water and then heated to 120 °C. After reacting for 2h, adjust the pH of the solution to be 6.0, utilize methods such as acidic cation exchange resin column, dialysis to purify the solution, and dry to prepare tetrakis (4-sodium sulfonate) phenyl zinc porphyrin (Zntpps 4 ). to the resulting Zntpps 4 Conduct UV-Vis test, the test results are as follows figure 1 shown.

[0034] (2) Add 0.03mmol Zntpps 4Dissolve in 15mL deionized water, and obtain a homogeneous solution after ultrasonication for 5min. Add 15mL 2mol / L sulfuric acid solution to the homogeneous solution for acidification, then add 0.09mol Py into the solution and keep stirring vigorously to obtain a mixed solution as electrolyte. PPy / Zntpps was deposited on the surface of ITO-PET by constant voltage deposition (voltage 1V, deposition time 200s) 4 Electrodeposition senso...

Embodiment 2

[0039] (1) Take 0.60g tetrakis (4-sodium sulfonate) phenyl porphyrin tpps 4 with 0.73g Co(OAc) 2 4H 2 O was dissolved in 80 mL of deionized water and then heated to 100 °C. After reacting for 6h, adjust the pH of the solution to be 6.5, utilize methods such as acidic cation exchange resin column, dialysis to purify the solution, and dry to prepare tetrakis (4-sodium sulfonate) phenyl cobalt porphyrin (Cotpps 4 ).

[0040] (2) Add 0.06mmol Cotpps 4 Dissolve in 20mL deionized water, and obtain a homogeneous solution after ultrasonication for 10min. Add 10 mL of 2 mol / L sulfuric acid solution to the homogeneous solution for acidification, then add 0.06 mol of Py into the solution and keep stirring vigorously to obtain a mixed solution as an electrolyte. PPy / Cotpps was deposited on the surface of ITO-PET by constant voltage deposition (voltage 2V, deposition time 100s) 4 Electrodeposition sensors.

Embodiment 3

[0042] (1) Take 0.60g tetrakis (4-sodium sulfonate) phenyl porphyrin tpps 4 with 1.68g Fe(OAc) 2 2H 2 O was dissolved in 80 mL of deionized water and then heated to 80 °C. After reacting for 12 hours, adjust the pH of the solution to be 7.0, utilize methods such as acidic cation exchange resin column, dialysis to purify the solution, and dry to prepare tetrakis (4-sodium sulfonate) phenyl iron porphyrin (Fetpps 4 ).

[0043] (2) Add 0.09mmol Fetpps 4 Dissolve in 10mL deionized water, and obtain a homogeneous solution after ultrasonication for 10min. Add 20mL 2mol / L sulfuric acid solution to the homogeneous solution for acidification, then add 0.03mol Py into the solution and keep stirring vigorously to obtain a mixed solution as electrolyte. Deposit PPy / Fetpps on the surface of ITO-PET by constant voltage deposition (voltage 3V, deposition time 50s) 4 Electrodeposition sensors.

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Abstract

The invention relates to an electrodeposition sensor based on polypyrrole (PPy) / metal porphyrin and a preparation method and application of the electrodeposition sensor, and belongs to the field of gas sensors. The preparation method comprises the steps that firstly, metal tetra (4-sodium sulfonate) phenylporphyrin is prepared, then the metal tetra (4-sodium sulfonate) phenylporphyrin is dissolvedin a sulfuric acid solution and evenly mixed with pyrrole, and thus electrodeposition liquid is prepared; and then a double-electrode electrochemical deposition method is adopted, the voltage and thedeposition time are controlled, electrodeposition is conducted on an ITO-PET conductive film, and thus the PPy / metal porphyrin electrodeposition sensor is prepared. The electrodeposition sensor basedon PPy / metal porphyrin and the preparation method and application of the electrodeposition sensor have the advantages that a preparation technology is easy, sensor compositions can be microscopicallyregulated and controlled by controlling the type and the condition of reactants, and the electrodeposition sensor having specific response to different gas is obtained.

Description

technical field [0001] The invention relates to a polypyrrole / metalloporphyrin-based electrodeposition sensor and a preparation method and application thereof, belonging to the field of gas sensors. technical background [0002] Generally, polymer materials (rubber, plastic, etc.) belong to the category of insulators, and electrons cannot move on and between molecular chains; while conductive polymers (Electronically Conductive Polymer, ECP) ​​refer to semiconductors or metal conductors in a doped state. Electronic conductivity, and a polymer material that can quickly switch between doped and dedoped states. Due to the combination of the electrical properties of conductors and the mechanical properties of polymers, ECP has been widely developed in the fields of electronic and photonic devices, electrochemical energy storage, and metal anticorrosion. The common feature of ECP is that the molecular chain has an alternating structure of single and double bonds, and contains a ...

Claims

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Application Information

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IPC IPC(8): C25D9/02
CPCC25D9/02
Inventor 黎厚斌蔡少勇陈良哲张婕妤刘兴海
Owner WUHAN UNIV
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