An efficient and stable co 3 o 4 Nanoribbon Array Chlorine Analysis Electrode

An array electrode and nanobelt technology, which is applied in the field of anode design for chlorine evolution reaction, can solve the problem that the anode is not involved, and achieve the effects of high commercial application prospect, simple preparation method and low overpotential.

Active Publication Date: 2019-12-17
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, in the prior art, for the preparation of Co 3 o 4 The use of nanoribbon array electrodes as anodes for chlorine evolution reactions has not been covered

Method used

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  • An efficient and stable co <sub>3</sub> o <sub>4</sub> Nanoribbon Array Chlorine Analysis Electrode
  • An efficient and stable co <sub>3</sub> o <sub>4</sub> Nanoribbon Array Chlorine Analysis Electrode
  • An efficient and stable co <sub>3</sub> o <sub>4</sub> Nanoribbon Array Chlorine Analysis Electrode

Examples

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preparation example Construction

[0042] Co involved in the present invention 3 o 4 A method for preparing a nanoribbon array electrode, the steps are as follows:

[0043] (1) Add 80 ml of deionized water, 5 mmol of cobalt nitrate, 25 mmol of urea, 10 mmol of ammonium fluoride and 5 mg of polyethylene glycol into a 100 ml polytetrafluoroethylene-lined reactor. After stirring and dissolving, put the cleaned titanium mesh (or titanium sheet; copper sheet; copper mesh; carbon mesh; carbon cloth; carbon fiber; graphene; FTO glass and other substrates) into the reaction kettle. Seal the reaction kettle and place it in an oven at 120°C for 4 hours to react, take it out, and take out the titanium mesh (or titanium sheet; copper sheet; copper mesh; carbon mesh; carbon cloth; carbon fiber; graphene; FTO glass and other substrates after naturally cooling to room temperature) ), rinsed and dried with deionized water.

[0044] (2) Put the dried titanium mesh (or titanium sheet; copper sheet; copper mesh; carbon mesh; c...

Embodiment 1

[0050] 80 ml of deionized water, 5 mmol of cobalt nitrate, 25 mmol of urea, 10 mmol of ammonium fluoride and 5 mg of polyethylene glycol were added to a 100 ml polytetrafluoroethylene-lined reaction kettle. After stirring and dissolving, put the cleaned titanium mesh into the reaction kettle. Seal the reaction kettle and place it in an oven at 120°C for 4 hours to react, take it out, cool it down to room temperature naturally, take out the titanium mesh, wash and dry it with deionized water. The dried titanium mesh was put into a muffle furnace, and the temperature was raised to 350°C at a rate of 5°C / min, and kept for 2h. After the reaction, the titanium mesh was taken out and cooled naturally to obtain Co 3 o 4 Nanoribbon array electrodes. With Co 3 o 4 The nanoribbon array electrode is the working electrode, the saturated Ag / AgCl electrode is the reference electrode, and the Pt is the counter electrode. 100ml containing 20mmol sodium dihydrogen phosphate is the chlori...

Embodiment 2

[0057] 80 ml of deionized water, 5 mmol of cobalt nitrate, 25 mmol of urea, 10 mmol of ammonium fluoride and 5 mg of polyethylene glycol were added to a 100 ml polytetrafluoroethylene-lined reaction kettle. After stirring and dissolving, put the cleaned carbon cloth into the reaction kettle. Seal the reaction kettle and place it in an oven at 120°C for 4 hours to react, take it out, cool it down to room temperature naturally, take out the carbon cloth, wash and dry it with deionized water. The dried carbon cloth was placed in a muffle furnace, and the temperature was raised to 350 °C at a rate of 5 °C / min and kept for 2 h. After the reaction, the carbon cloth was taken out and cooled naturally to obtain Co 3 o 4 Nanoribbon array electrodes.

[0058] With Co 3 o 4 The nanoribbon array electrode is the working electrode, the saturated Ag / AgCl electrode is the reference electrode, and the Pt is the counter electrode. 100ml containing 20mmol sodium dihydrogen phosphate is th...

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Abstract

The invention provides a Co3O4 nanobelt array electrode. The electrode is used as an anode for carrying out a chlorination reaction. The Co3O4 nanobelt is deposited by adopting a hydrothermal method on a titanium mesh (or a titanium sheet, a cooper sheet, a copper net, a carbon net, carbon cloth, carbon fibers, graphene, FTO glass and the like) substrate; and after annealing is carried out, namelythe Co3O4 nanobelt is obtained; and firstly, a precursor is formed, and the Co3O4 nanobelt array is formed by heat treatment. The Co3O4 nanobelt array electrode is simple to prepare, the cost is low,the activity is high, the stability is high, and the application prospect is considerable; and the step is simple, operation is convenient, and practicability is high.

Description

technical field [0001] The invention belongs to the field of anode design for chlorine analysis reaction, in particular to a highly efficient and stable Co 3 o 4 Nanoribbon array chlorine analysis electrode. Background technique [0002] As one of the most basic chemical industries, the chlor-alkali industry can obtain chlorine gas, sodium hydroxide and other products through electrolysis of saturated salt water. These products are widely used in the chemical industry. In the chlor-alkali industry, due to overpotential and selectivity problems, efficient and stable anodes for chlorine evolution reactions are usually prepared based on ruthenium iridium noble metal oxides, resulting in high anode usage costs. How to prepare high-efficiency and low-cost chlorine analysis anodes has always been a research hotspot in the chlor-alkali industry. [0003] Wang Mingxian on "Co 3 o 4 to RuO 2 —TiO 2 (60) / Ti anode chlorine evolution activity and the effect of ohmic drop" studied...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25B11/06C25B1/34B82Y30/00
CPCB82Y30/00C25B1/34C25B11/077
Inventor 王朋黄柏标朱相林王泽岩张晓阳秦晓燕刘媛媛张倩倩
Owner SHANDONG UNIV
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