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Method for preparing ZnFe2O4 by cathode electrodeposition

A cathodic electrodeposition, znfe2o4 technology, applied in the field of inorganic optoelectronic materials preparation process, to achieve the effect of environmental friendliness, low cost and fast deposition rate

Inactive Publication Date: 2013-12-11
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] So far, there have been many relatively mature preparation methods for zinc ferrite, such as hydrothermal synthesis, co-deposition, sol-gel method, pulsed laser deposition, sputtering, etc., but the preparation of ZnFe by cathodic electrodeposition 2 o 4 The method has not been reported yet. In this paper, the experimental method of cathodic electrodeposition is adopted. By applying suitable experimental conditions, a stable cubic spinel ZnFe with octahedral morphology is obtained. 2 o 4 , the experimental equipment is simple, easy to operate, and can be carried out under low temperature and normal pressure

Method used

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  • Method for preparing ZnFe2O4 by cathode electrodeposition
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  • Method for preparing ZnFe2O4 by cathode electrodeposition

Examples

Experimental program
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Effect test

Embodiment 1

[0015] 1) The working electrode, that is, the activation of ITO conductive glass: wash the ITO conductive glass with acetone for 3 times, then clean the conductive glass with deionized water in an ultrasonic cleaner for 30 minutes, and then place the conductive glass in dilute nitric acid solution for 30 seconds. , and finally washed with deionized water and set aside;

[0016] 2) ZnFe 2 o 4 Preparation of thin film electrodes: 0.0087mol of Fe(NO 3 ) 2 9H 2 Dissolve O in 20 mL of distilled water, stir for 5 min, add 0.0100 mol of triethanolamine, stir for 1 h, and make it react with Fe 3+ After fully complexing, add 0.2000mol of NaOH, stir until the solution is clear, then add 0.0030mol of Zn(NO 3 ) 2 ·6H 2 O, continue to stir for 1h, add deionized water to obtain a clarified electrolyte solution with a volume of 100mL; use ITO conductive glass as the working electrode, platinum sheet electrode as the counter electrode, and silver-silver chloride electrode as the refere...

Embodiment 2

[0020] 1) The working electrode, that is, the activation of ITO conductive glass: wash the ITO conductive glass with acetone for 5 times, then clean the conductive glass with deionized water in an ultrasonic cleaner for 60 minutes, and then place the conductive glass in a dilute nitric acid solution to activate it for 60 seconds , and finally washed with deionized water and set aside;

[0021] 2) ZnFe 2 o 4 Preparation of thin film electrodes: 0.0087mol of Fe(NO 3 ) 2 9H 2 Dissolve O in 20 mL of distilled water, stir for 10 min, add 0.0100 mol of triethanolamine, stir for 2 h, and make it react with Fe 3+ After fully complexing, add 0.2000mol of NaOH, stir until the solution is clear, then add 0.0030mol of Zn(NO 3 ) 2 ·6H 2 O, continue to stir for 2h, add deionized water to obtain a clarified electrolyte solution with a volume of 100mL; use ITO conductive glass as the working electrode, the platinum sheet electrode as the counter electrode, and the silver-silver chlorid...

Embodiment 3

[0025] 1) The working electrode, that is, the activation of ITO conductive glass: wash the ITO conductive glass with acetone for 4 times, then clean the conductive glass with deionized water in an ultrasonic cleaner for 40 minutes, and then place the conductive glass in dilute nitric acid solution to activate it for 40 seconds , and finally washed with deionized water and set aside;

[0026] 2) ZnFe 2 o 4 Preparation of thin film electrodes: 0.0087mol of Fe(NO 3 ) 2 9H 2 O was dissolved in 20mL of distilled water, stirred for 8min, added 0.0100mol of triethanolamine, stirred for 1.5h, and Fe 3+ After fully complexing, add 0.2000mol of NaOH, stir until the solution is clear, then add 0.0030mol of Zn(NO 3 ) 2 ·6H 2 O, continue to stir for 1.5h, add deionized water to obtain a clarified electrolyte solution with a volume of 100mL; use ITO conductive glass as the working electrode, the platinum sheet electrode as the counter electrode, and the silver-silver chloride electro...

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Abstract

The invention discloses a method for preparing ZnFe2O4 by cathode electrodeposition. The method for preparing ZnFe2O4 by cathode electrodeposition is characterized in that: using the cathode electrodeposition method to perform potentiostaticelectrodeposition on a highly basic mixed electrolyte in which triethanolamine is complexed with Fe<3+> and Zn<2+> respectively, calcining the deposited sampler at the atmosphere of Ar to obtain spinel ZnFe2O4 membrane electrode with octahedron morphology on ITO aelectro-conductive glass, and then under simulated sunlight, performing photoelectric property tests on ZnFe2O4 membrane electrodes deposited under different cathode deposition voltages. The method of the invention has the advantages of being low in raw material cost, simple in apparatuses, easy to operate, environment friendly and the like.

Description

technical field [0001] The invention relates to a method for preparing ZnFe by cathode electrodeposition 2 o 4 The method belongs to the technical field of inorganic photoelectric material preparation technology. Background technique [0002] ZnFe 2 o 4 It is an indirect n-type semiconductor with a small bandgap (≈2eV) and a cubic spinel structure. ZnFe 2 o 4 It is a soft magnetic material with excellent performance, and has high photocatalytic water electrolysis activity, and is a semiconductor catalyst sensitive to visible light. [0003] So far, there have been many relatively mature preparation methods for zinc ferrite, such as hydrothermal synthesis, co-deposition, sol-gel method, pulsed laser deposition, sputtering, etc., but the preparation of ZnFe by cathodic electrodeposition 2 o 4 The method has not been reported yet. In this paper, the experimental method of cathodic electrodeposition is adopted. By applying suitable experimental conditions, a stable cubic...

Claims

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Application Information

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IPC IPC(8): C25D9/08
Inventor 刘润王萍孙洁徐铸德许宜铭
Owner ZHEJIANG UNIV
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