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Preparation method of NiMo alloy catalyst supported by TiO2 nanotube array

A technology of nanotube arrays and alloy catalysts, which is applied in catalyst activation/preparation, metal/metal oxide/metal hydroxide catalysts, physical/chemical process catalysts, etc., and can solve problems such as expensive prices and scarce crustal reserves

Inactive Publication Date: 2020-06-09
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Pt, as a transition metal, can form a suitable M-H bond with hydrogen atoms, and is currently the most excellent electrocatalytic hydrogen evolution material, but it is expensive and has scarce reserves in the earth's crust.

Method used

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  • Preparation method of NiMo alloy catalyst supported by TiO2 nanotube array
  • Preparation method of NiMo alloy catalyst supported by TiO2 nanotube array
  • Preparation method of NiMo alloy catalyst supported by TiO2 nanotube array

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] A kind of TiO 2 A method for preparing a NiMo alloy catalyst supported by a nanotube array, the steps comprising:

[0034] Step 1. TiO 2 Fabrication of nanotube arrays

[0035] (1) Titanium substrate pretreatment

[0036] Cut the titanium foil into 1×3cm 2 Size, ultrasonic cleaning in sequence of 10% hydrochloric acid solution, deionized water, acetone and absolute ethanol for 10 minutes;

[0037] (2) Chemical polishing of titanium substrate

[0038] The cleaned titanium substrate is placed in a chemical polishing solution for chemical polishing, and the composition volume ratio of the polishing solution is: HF:HNO 3 :H 2 O=1:4:5, the polished titanium substrate has a metallic luster;

[0039] (3) Anodizing of titanium substrate

[0040] The polished titanium substrate is used as the anode, and the graphite rod is used as the cathode. A two-electrode system is used for anodic oxidation in the electrolyte. The configuration method of the electrolyte is: take 0.27...

Embodiment 2

[0053] A kind of TiO 2 A method for preparing a NiMo alloy catalyst supported by a nanotube array, the steps comprising:

[0054] Step 1. TiO 2 Fabrication of nanotube arrays

[0055] (1) Titanium substrate pretreatment

[0056] Cut the titanium foil into 1×3cm 2 Size, ultrasonic cleaning in sequence of 10% hydrochloric acid solution, deionized water, acetone and absolute ethanol for 10 minutes;

[0057] (2) Chemical polishing of titanium substrate

[0058] The cleaned titanium substrate is placed in a chemical polishing solution for chemical polishing, and the composition volume ratio of the polishing solution is: HF:HNO 3 :H 2 O=1:4:5, the polished titanium substrate has a metallic luster;

[0059] (3) Anodizing of titanium substrate

[0060] The polished titanium substrate is used as the anode, and the graphite rod is used as the cathode. A two-electrode system is used for anodic oxidation in the electrolyte. The configuration method of the electrolyte is: take 0.27...

Embodiment 3

[0073] A kind of TiO 2 A method for preparing a NiMo alloy catalyst supported by a nanotube array, the steps comprising:

[0074] Step 1. TiO 2 Fabrication of nanotube arrays

[0075] (1) Titanium substrate pretreatment

[0076] Cut the titanium foil into 1×3cm 2 Size, ultrasonic cleaning in sequence of 10% hydrochloric acid solution, deionized water, acetone and absolute ethanol for 10 minutes;

[0077] (2) Chemical polishing of titanium substrate

[0078] The cleaned titanium substrate is placed in a chemical polishing solution for chemical polishing, and the composition volume ratio of the polishing solution is: HF:HNO 3 :H 2 O=1:4:5, the polished titanium substrate has a metallic luster;

[0079] (3) Anodizing of titanium substrate

[0080] The polished titanium substrate is used as the anode, and the graphite rod is used as the cathode. A two-electrode system is used for anodic oxidation in the electrolyte. The configuration method of the electrolyte is: take 0.27...

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Abstract

The invention discloses a preparation method of a NiMo catalyst supported by a TiO2 nanotube array. The method comprises: preparing TiO2 nanotubes, obtaining oxidized titanium foil, preparing an electroplating liquid, carrying out pre-electrolysis on the plating liquid by taking a graphite rod as a counter electrode, carrying out constant-current electroplating by using a direct-current stabilizedpower supply, putting into a heat collection type magnetic heating stirrer, and carrying out constant-temperature water bath heating, wherein the constant-temperature precision is + / -1 DEG C, the stirring speed is 200 rap / min, the anode is graphite, the cathode is the oxidized titanium foil, the two electrodes are arranged in parallel at an interval of 5-6 cm and are inserted into a position 3-4cm below the liquid level, the electro-deposition time is 1-3 minutes, and a final product is obtained on the cathode. Through structural optimization, the NiMo alloy catalytic material supported by the TiO2 nanotube array and having excellent catalytic performance is obtained, and a purpose of the invention is to explore the way of improving the electro-catalytic performance of the NiMo alloy soas to provide experimental and theoretical basis for developing cheap and efficient electro-catalytic materials.

Description

technical field [0001] The invention relates to the technical field of electrolytic water catalysis, in particular to a TiO 2 Preparation of NiMo catalysts supported by nanotube arrays. Background technique [0002] With the vigorous development of renewable energy technologies such as solar energy, wind energy, and tidal energy, the application of electrolytic water technology has ushered in the best fit. The new energy system built by the organic combination of the two has a bright future, and the development and application of electrolytic water technology has entered a new stage. Although water electrolysis is a simple process involving only two half-reactions of hydrogen evolution (HER) and oxygen evolution (OER), people have been studying electrolysis of water for hundreds of years, but the lack of cheap, efficient and stable catalytic materials still hinders it. The core problem of large-scale industrial application. [0003] According to the Sabatier rule, when th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/883C25B1/04C25B11/06C23F3/00C25D11/26C25D3/56B01J37/34
CPCB01J23/883C25B1/04C23F3/00C25D11/26C25D3/562B01J37/348C25B11/057C25B11/075B01J35/33Y02E60/36
Inventor 高圆席生岐魏勉叶婧盈郭冲刘郑涛
Owner XI AN JIAOTONG UNIV
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