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A preparation method of cerium oxide nanorod array/graphene composite material and its application in photocathode protection

A technology of nanorod arrays and composite materials, applied in the field of preparation of cerium oxide nanorod arrays/graphene composite materials, can solve the problem that cerium oxide nanoparticles cannot conduct electrons quickly and effectively, so as to promote directional transmission and improve anti-corrosion performance , The effect of simple preparation method

Active Publication Date: 2022-02-22
江苏纳欧新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The cerium oxide in the existing cerium oxide / graphene composite materials is generally granular, and the cerium oxide nanoparticles cannot conduct electrons quickly and effectively, but the construction of cerium oxide nanorod arrays can effectively conduct electrons

Method used

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  • A preparation method of cerium oxide nanorod array/graphene composite material and its application in photocathode protection
  • A preparation method of cerium oxide nanorod array/graphene composite material and its application in photocathode protection
  • A preparation method of cerium oxide nanorod array/graphene composite material and its application in photocathode protection

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Experimental program
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Effect test

Embodiment 1

[0021] 1. Take 0.01 mol / L of nitrate as an electrolyte, 0.05 mol / L of potassium chloride is auxiliary electrolyte, 0.1 mol / L of ammonium chloride is a stabilizer, and the amount of nitrate and ammonium chloride material It is 1: 2, and the amount of material of cerium nitrate and potassium chloride is 1: 0.1, Ti is the substrate, and Pt is the counter electrode, saturated Ag / Ag electrodes as a reference electrode, at 50 ° C, 0.5 mA / cm. 2 Current density at the potential for 80 min, in CEO 2 Nuclear growth CEO on seed layer 2 Nano stick array.

[0022] 2. Formulated 50ml 0.025mol / L SNCL 2 Ethanol solution to activate CEO 2 Nano stick array, weigh a quantitative oxide ink in 100 ml of deionized water, will activate CEO 2 The nano-bar array is immersed in an oxide ink solution at 50 ° C for 0.5 h, followed by NA 2 SO 4 Rinse with deionized water, dried in vacuo 50 ° C to obtain a cerium oxide nano-array / graphene composite.

Embodiment 2

[0024] 1. A ratio of the amount of 0.20 mol / L of potassium chloride is an auxiliary electrolyte, 0.3 mol / L of ammonium acetate is a stabilizer, and the amount of ammonium nitrate and ammonium acetate. It is 1: 1, the ratio of the substance of ammonium nitrate and potassium chloride is 1: 5, ITO conductive glass is a substrate, Pt is the counter electrode, saturated Ag / Ag electrodes as a reference electrode, at 70 ° C, 3 mA / cm 2 Current density under low potential deposition 120min seed layer growth CEO 2 Nano stick array.

[0025] 2. Sncl formulated 100ml 0.05mol / L 2 Ethanol solution to activate CEO 2 Nano stick array, weigh a quantitative oxide ink dissolve in 200 ml of deionized water, will activate CEO 2 The nano-bar array is immersed in an oxide ink solution for 2 h at 70 ° C, followed by Na. 2 SO 4 Flush with deionized water, dried in vacuo 70 ° C to obtain a cerium oxide nano-array / graphene composite.

Embodiment 3

[0027] 1. Ammonium chloride in 0.05 mol / L is an electrolyte, 0.35 mol / L of potassium chloride is an auxiliary electrolyte, 0.5 mol / L of six methyl tetramine is a stabilizer, ammonium chloride and six times a methyl group The ratio of the substance of the tetraamine is 1: 0.5, the ratio of the substance of ammonium chloride and potassium chloride is 1: 10, the FTO conductive glass is the substrate, the Pt is the electrode, saturated Ag / AgCl electrode Compared with electrode, at 90 ° C, 5.5mA / cm 2 Current density at a potential deposited 160 min seed layer growth CEO 2 Nano stick array.

[0028] 2. Formulate SNCL of 150ml 0.075mol / L 2 Ethanol solution to activate CEO 2 Nano stick array, weigh a quantitative oxide ink dissolve in 300 ml of deionized water, will activate CEO 2 The nano-bar array is immersed in an oxide ink solution at 90 ° C for stirring at 90 ° C for 3.5 h, followed by NA 2 SO 4Rinse with deionized water, dried in vacuo 90 ° C to obtain a cerium oxide nan...

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Abstract

The invention relates to a preparation method of a cerium oxide nanorod array / graphene composite material and its application in photocathode protection. The invention uses a conductive substrate as a substrate and grows CeO on the substrate by electrodeposition 2 nanorod arrays. Then with SnCl 2 Activation of CeO by ethanol solution 2 Nanorod arrays, the Sn 2+ deposited on CeO 2 On the nanorod array, immersed in the GO solution, through the Sn 2+ Restore GO to rGO, while Sn 2+ Electrostatic adsorption with rGO makes CeO 2 The nanorod array is connected on the graphene sheet to construct the cerium oxide nanorod array / graphene composite material. The cerium oxide nanorod array structure can not only improve the light absorption rate, but also effectively promote the separation of electrons and holes and the directional transmission efficiency of carriers under light. It combines the physical barrier of sheet materials with traditional photocathode anticorrosion, and plays a leading role. The synergistic effect of the two can further improve the anti-corrosion performance.

Description

Technical field [0001] The present invention belongs to the technical field of photovoltaic protective material, and the method of preparing a cerium oxide nano array / graphene composite material and its application in photovoltaic protection. Background technique [0002] Metal corrosion means that the metal material is damaged by the surrounding medium, which is caused by the problems caused by all walks of life, and the resources caused by the resources have brought huge losses to the national economy. Traditional anti-corrosion technology mainly: adding corrosion inhibitor, anti-corrosion coating method, and electrochemical protection, there are still some problems such as relatively complicated, high cost, short life or anti-corrosion performance, and tradition Compared with the external current cathode and sacrificial anode method, photoelectrochemical cathodic protection technology has the advantages of consuming electrical energy, photode material can be recyclable, low ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25D9/04C23F13/14C01B32/184B82Y30/00B82Y40/00
CPCC25D9/04C23F13/14C01B32/184B82Y30/00B82Y40/00
Inventor 姚超左士祥严向玉李霞章刘文杰王灿叶里祥吴红叶
Owner 江苏纳欧新材料有限公司
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