Method for preparing heterogeneous electric Fenton cathode material

A cathode material, heterogeneous technology, applied in battery electrodes, circuits, electrical components, etc., can solve problems such as secondary pollution easily

Active Publication Date: 2014-07-16
黄山市开发投资集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the above scheme, in order to obtain nano-iron oxide with a certain shape and size, a large amount of surfactants, dispersants, templating agents or organic solvents are often used, which makes it easy to prepare nano-iron oxide in the subsequent solid-liquid separation or heat treatment. produce secondary pollution

Method used

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  • Method for preparing heterogeneous electric Fenton cathode material
  • Method for preparing heterogeneous electric Fenton cathode material
  • Method for preparing heterogeneous electric Fenton cathode material

Examples

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Effect test

Embodiment 1

[0024] At room temperature, with a single-chamber proton exchange membrane fuel cell as the reactor, an air electrode with platinum carbon as the catalyst as the cathode, and carbon paper as the anode of the battery, the 0.2mol L -1 Add buffer NaHCO to the NaCl solution 3 makes NaHCO 3 The concentration in the electrolyte solution is 0.05mol L -1 , use 1mol·L -1 HCl solution to adjust the pH value of the electrolyte solution to 7.0, add the newly prepared FeCl 2 solution until its concentration in the electrolyte solution is 0.4mol L -1 Finally, close the reactor; connect the cathode and anode of the battery with a wire connected to a 1kΩ external resistance, and detect the voltage at both ends of the external resistance in real time. When the voltage at both ends of the external resistance drops from 368mV to zero, take out the anode and wash it with distilled water until After there is no chloride ion in the solution (silver nitrate solution test), put it in an oven and ...

Embodiment 2

[0026] At room temperature, with a single-chamber proton exchange membrane fuel cell as the reactor, an air electrode with platinum carbon as the catalyst as the cathode, and carbon paper as the anode of the battery, the 0.2mol L -1 Add buffer NaHCO to the NaCl solution 3 makes NaHCO 3 The concentration in the electrolyte solution is 0.05mol L -1 , use 1mol·L -1 HCl solution to adjust the pH value of the electrolyte solution to 8.0, add the newly prepared FeCl 2 solution until its concentration in the electrolyte solution is 0.05mol L -1 Finally, close the reactor; connect the cathode and anode of the battery with a wire connected to a 1kΩ external resistance, and detect the voltage at both ends of the external resistance in real time. When the voltage at both ends of the external resistance drops from 485mV to zero, take out the anode and wash it with distilled water until After there is no chloride ion in the solution (inspected by silver nitrate solution), put it in an ...

Embodiment 3

[0028] At room temperature, with a single-chamber proton exchange membrane fuel cell as the reactor, an air electrode with platinum carbon as the catalyst as the cathode, and carbon paper as the anode of the battery, the 0.2mol L -1 Add buffer NaHCO to the NaCl solution 3 makes NaHCO 3The concentration in the electrolyte solution is 0.05mol L -1 , use 1mol·L -1 HCl solution to adjust the pH value of the electrolyte solution to 5.0, add the newly prepared FeSO 4 solution until its concentration in the electrolyte solution is 1mol L -1 Finally, close the reactor; connect the cathode and anode of the battery with a wire connected to a 1kΩ external resistance, and detect the voltage at both ends of the external resistance in real time. When the voltage at both ends of the external resistance drops from 409mV to zero, take out the anode and wash it with distilled water until After there is no chloride ion in the solution (inspected by silver nitrate solution), put it into an ov...

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Abstract

The invention discloses a method for preparing a heterogeneous electric Fenton cathode material. The method comprises the following steps: with a single-room proton exchange membrane fuel cell as a reactor at room temperature, an air electrode employing platinum carbon as a catalyst as a cathode, a carbon material as an anode of the battery, a NaCl solution as electrolyte and NaHCO3 as a buffer agent, adjusting the pH value of the electrolyte to 5-8, adding a newly prepared ferrous salt solution after introducing nitrogen to remove oxygen, and then sealing the reactor; connecting the cathode and the anode of the battery by a lead connected with an external resistor of 0.01-1 kohm; detecting the voltage at two ends of the external resistor in real time; and when the voltage at two ends of the external resistor is reduced to zero, taking out the anode material and washing by distilled water until no chloride ion exists in the lotion, and then drying and carrying out heat treatment, thereby obtaining the carbon-supported nanocrystalline iron oxide electrode material. Any assistant containing organic matter does not need to be added in the preparation process, no secondary pollution is generated in the subsequent heat treatment process, and extra electric energy can be recovered.

Description

1. Technical field [0001] The invention relates to a preparation method of an electrode material, in particular to a preparation method of a heterogeneous electric Fenton cathode material, which utilizes normal temperature air cathode fuel cell technology to prepare a carbon-loaded nano-iron oxide material in situ at the anode of the battery and It is used as a cathode material in heterogeneous electro-Fenton catalytic reactions. 2. Background technology [0002] Due to its low cost, low environmental pollution, and good chemical stability, optical properties, catalytic properties, magnetic properties, and wave-absorbing properties, nano-iron oxides are widely used in the fields of catalysts, pigments, magnetic materials, sensors, and biomedicine. All have high application value. The common nano-iron oxide synthesis methods include precipitation method, sol-gel method, microemulsion method, hydrothermal method, template method and so on. CN1427042A discloses a method for p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/88H01M4/90
CPCH01M4/88H01M4/9016H01M4/9083H01M4/96Y02E60/50
Inventor 孙敏汝小瑞翟林峰王华林
Owner 黄山市开发投资集团有限公司
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