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A method of electrocatalyst nickel oxide to construct a photo-assisted fuel cell and its application in the degradation of pollutant bisphenol A

A technology of fuel cells and electrocatalysts, which is applied in the direction of water pollutants, chemical instruments and methods, battery electrodes, etc., can solve the problems of cumbersome preparation process, large material particles, and high cost, and achieve simple and fast preparation methods and high material structure. stable effect

Inactive Publication Date: 2020-02-14
SOUTH CHINA NORMAL UNIVERSITY
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  • Abstract
  • Description
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Problems solved by technology

Its preparation methods mainly include electrochemical deposition method, microwave decomposition method, magnetron sputtering method, wet chemical method, electrospinning method, sol-gel method, etc. Among them, wet chemical method and sol-gel method usually need to prepare precursor substances first. , to obtain nickel oxide by roasting, the preparation process is cumbersome, and the obtained material particles are relatively large; although chemical vapor deposition, magnetron sputtering, and electrospinning can achieve the deposition of nickel oxide on the conductive substrate, but These methods are complicated to operate, require special instruments and equipment, and cost a lot

Method used

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  • A method of electrocatalyst nickel oxide to construct a photo-assisted fuel cell and its application in the degradation of pollutant bisphenol A
  • A method of electrocatalyst nickel oxide to construct a photo-assisted fuel cell and its application in the degradation of pollutant bisphenol A
  • A method of electrocatalyst nickel oxide to construct a photo-assisted fuel cell and its application in the degradation of pollutant bisphenol A

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Effect test

Embodiment 1

[0025] Embodiment 1: the preparation of a kind of electrocatalyst nickel oxide electrode

[0026] The NiO of this embodiment x / ITO electrode, prepared by the following method:

[0027] With water as the solvent and nickel salt as the main component, an electrodeposition solution with a concentration of 0.005mol / L was prepared; a sodium salt with a concentration of 0.1mol / L was added as a supporting electrolyte; the pH was adjusted to 3.5 with sodium hydroxide solution, The temperature of the electrodeposition solution was adjusted to 25°C; the ITO electrode was used as the anode, the platinum sheet was used as the counter electrode, and the saturated calomel electrode was used as the reference electrode, which were respectively connected to the three electrode joints of the electrochemical workstation to control the NiO x The deposition potential range is 0.0V~-1.3V( figure 2 ) or 1.3V~-1.3V ( image 3 ), respectively deposited 20 laps, and then soaked the electrode in de...

Embodiment 2

[0028] Embodiment 2: Construction of light-assisted fuel cell

[0029] With CdS / TiO 2 / ITO electrode is made anode, with two kinds of NiO prepared in embodiment 1 x / ITO electrode as the cathode respectively; add sodium sulfate solution with a concentration of 0.1mol / L in the anode pool as the electrolyte solution, add bisphenol A solution with a concentration of 0.05-3mmol / L as the fuel, and adjust the pH to 13.0; in the cathode pool Add 0.1mol / L sodium sulfate solution and 0.05-5mol / L sodium hypochlorite solution to adjust the pH to 13.0; connect the two pools with a saturated potassium chloride salt bridge, and construct a photo-assisted fuel cell under visible light irradiation.

Embodiment 3

[0030] Embodiment 3: Light-assisted fuel cell performance test

[0031] To the test of the photocatalytic fuel cell performance that embodiment 2 builds, specific operation steps are as follows:

[0032] Adjust the resistance value of the resistance box connected between the anode and the cathode of the photocatalytic fuel cell, measure and calculate the change curve of the current density and power density of the photocatalytic fuel cell with voltage, the result is as follows figure 1 shown.

[0033] Under visible light radiation, the short-circuit photocurrent density of the fuel cell in the photoelectrochemical fuel cell constructed with ITO as the cathode in Example 2 is 6.4 μA cm -2 , with a maximum power density of 0.83 μW cm at 0.26 V -2 , NiO prepared by electrodeposition in the range of 0.0V~-1.3V x The short-circuit photocurrent density of the fuel cell in the photoelectrochemical fuel cell constructed with ITO as the cathode is 17.42 μA cm -2 , with a maximum po...

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Abstract

The invention belongs to the technical field of environmental catalysis, and discloses a method for constructing a photo-assisted fuel cell by using electrocatalyst nickel oxide and application thereof in pollutant bisphenol A degradation. The method comprises the following steps: using a CdS / TiO2 / ITO modified indium tin oxide as a positive electrode, using NiOx / ITO as a negative electrode, and realizing catalytic degradation of bisphenol A(BPA) by constructing a bisphenol A-sodium hypochlorite fuel cell; and simultaneously, optical energy and chemical energy are converted into electrical energy, so that the performance of the cell is improved. According to the method for constructing the photo-assisted fuel cell by using electrocatalyst nickel oxide and application thereof in pollutant bisphenol A degradation, the method is simple in operation, environmentally-friendly and safe, and the cell realizes the degradation and conversion of bisphenol A into CO2 under the driving of visible light.

Description

technical field [0001] The invention belongs to the technical field of environmental catalysis, and in particular relates to a method for constructing a light-assisted fuel cell by electrocatalyst nickel oxide and its application in the degradation of pollutant bisphenol A. Background technique [0002] Energy and the environment are two hot topics discussed by mankind in the 21st century. With the acceleration of industrialization, the discharge of pollutants has increased, and the environmental pollution has become serious. Bisphenol A is a common organic pollutant, and it is also an estrogen in the environment, which has great damage to the endocrine system in humans and animals. How to efficiently remove the content of bisphenol A in the environment has become a research hotspot. At present, the methods of catalytic degradation of bisphenol A mainly include electrocatalysis, photocatalysis and photoelectrocatalysis, among which photocatalytic degradation of bisphenol A ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/90H01M4/88C02F1/461C02F101/34
CPCC02F1/461C02F2101/34H01M4/88H01M4/9016Y02E60/50
Inventor 黄彬李红
Owner SOUTH CHINA NORMAL UNIVERSITY
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