Nanotube/porous Ti/W/Ni oxide thin film catalytic electrode in-site loaded with platinum/palladium nanoparticles and preparation method therefor

A technology of palladium nanoparticles and catalytic electrodes, applied in battery electrodes, circuits, electrical components, etc., can solve the problems of reducing the utilization rate of nanotube walls, unstable activity, and less lumen distribution, so as to improve the active surface area and use efficiency , Excellent structural stability, evenly distributed effect

Inactive Publication Date: 2016-01-20
TAIYUAN UNIV OF TECH
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to its high specific surface area and excellent chemical stability, nanotube-shaped titanium oxide has also been reported as an excellent carrier material for platinum group metal catalysts. However, at present, titanium oxide nanotubes are first prepared and then used as a carrier. On it, chemical reduction or microwave-assisted reduction method is used to chemically react the corresponding noble metal salt with the reducing agent, so that the formed noble metal nanoparticles are attached to the surface of the nanotube; due to the small diameter of the nanotube, it is generally in the range of te

Method used

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  • Nanotube/porous Ti/W/Ni oxide thin film catalytic electrode in-site loaded with platinum/palladium nanoparticles and preparation method therefor
  • Nanotube/porous Ti/W/Ni oxide thin film catalytic electrode in-site loaded with platinum/palladium nanoparticles and preparation method therefor
  • Nanotube/porous Ti/W/Ni oxide thin film catalytic electrode in-site loaded with platinum/palladium nanoparticles and preparation method therefor

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Experimental program
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Effect test

Embodiment 1

[0029] A nanotube (hole)-shaped Ti / W / Ni oxide in-situ supported platinum (palladium) nano-particle film catalytic electrode and a preparation method thereof. In the formed film electrode, the platinum nano-particles are embedded in the generated titanium oxide tube in situ (Hole)-like nanostructured tube (hole) wall, its structure diagram is as attached figure 1 As shown; its preparation method is as follows:

[0030] Step 1. First, design the multi-element sputtering target. Here, a disc-shaped titanium target with a purity of 99.5% is used as the base target. Platinum wires are embedded in the densely distributed areas of the magnetic field during magnetron sputtering. The titanium target is used. The diameter of the material is 100mm, the thickness is 5mm, the diameter of the inlaid platinum wire is 1mm, and the length is 5mm; the schematic diagram of the designed and processed titanium platinum composite target is attached figure 2 As shown; keep the inlaid platinum (palladi...

Embodiment 2

[0037] A nanotube (hole)-shaped tungsten oxide in-situ supported platinum nano-particle film catalytic electrode and a preparation method thereof. The platinum nano-particles in the formed film electrode are in-situ embedded in the generated tungsten oxide tube (hole)-shaped nano-structured tube (Hole) wall, its preparation method is as follows:

[0038] Step 1. First, design the multi-element sputtering target. Here, a disc-shaped tungsten target is used as the base target, with a purity of 99.9%. The platinum wire is embedded along the dense area of ​​the magnetic field line during magnetron sputtering. The tungsten target is used. The diameter of the material is 100mm, the thickness is 3mm, the diameter of the inlaid platinum wire is 1mm, and the length is 3mm; then the processed composite target material is placed on the target position of the magnetron sputtering furnace.

[0039] Step 2. The selected sputtering substrate material is a titanium wafer with a purity of 99.9%, wi...

Embodiment 3

[0044] A nanotube (hole)-shaped tungsten oxide in-situ loaded palladium nano-particle film catalytic electrode and a preparation method thereof. The palladium nano-particles in the formed film electrode are embedded in the generated tungsten oxide tube (hole)-shaped nano-structured tube in situ (Hole) wall, its preparation method is as follows:

[0045] Step 1. First, design the multi-element sputtering target. Here, a disc-shaped tungsten target is used as the base target, with a purity of 99.9%. Palladium wire is embedded on the area where the magnetic field lines are densely distributed during magnetron sputtering. The tungsten target is used. The diameter of the material is 100mm, the thickness is 3mm, the diameter of the inlaid palladium wire is 1mm, and the length is 3mm; then the processed composite target material is placed on the target position of the magnetron sputtering furnace.

[0046] Step 2. The selected sputtering substrate material is a 99.9% purity titanium wafer...

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Abstract

The invention relates to a tubular (porous) Ti/W/Ni oxide thin film catalytic electrode in-site loaded with platinum (palladium) nanoparticles and a preparation method therefor, and belongs to the technical field of energy materials and electro-catalysis, for solving technical problems by providing the nano-tubular (porous) Ti/W/Ni oxide thin film catalytic electrode in-site loaded with the platinum (palladium) nanoparticles, having a simple preparation process, high possibility of large-scale industrial production without using noble metal salts and strong reducing agents in the production process, and low environmental harm, and the preparation method therefor; for fulfilling the purpose, the invention adopts the technical scheme as follows: depositing a Ti/W/Ni-Pt/Pd alloy thin film into a titanium sheet, a tungsten sheet, a nickel titanium alloy sheet or the surface of a conductive glass, then taking the metal sheet or the conductive glass deposited with the Ti/W/Ni-Pt/Pd alloy thin film as the positive electrode, and taking a graphite rod/sheet or a platinum filament/sheet as the negative electrode for performing an anodic oxidation treatment to obtain the nanotube/porous Ti/W/Ni oxide thin film catalytic electrode in-site loaded with the platinum/palladium nanoparticles, wherein the metal Pt/Pd in the electrode is in-site embedded in the nanotube/porous wall of the nanotube/porous Ti/W/Ni oxide and exists in the form of the metal-state nanoparticles.

Description

technical field [0001] The invention relates to a nanotube (pore)-shaped Ti / W / Ni oxide in-situ supported platinum (palladium) nanoparticle film catalytic electrode and a preparation method thereof, which can be used for the electrocatalytic oxidation reaction of formic acid, methanol, ethanol and other liquid fuels. The invention belongs to the technical field of energy materials and electrocatalysis. Background technique [0002] Direct alcohol and formic acid fuel cells have the advantages of high efficiency, no pollution, no noise, wide application range, continuous operation, etc., and have broad application prospects in mobile device power supplies. The catalyst layer that directly and efficiently converts the chemical energy of methanol, ethanol, formic acid and other fuels into electrical energy is the core working part of the fuel cell. Fuel molecules undergo oxidation-reduction reactions on the active sites on the catalyst surface, and then generate electrons for ex...

Claims

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Application Information

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IPC IPC(8): H01M4/86H01M4/92H01M4/88
CPCH01M4/8605H01M4/8647H01M4/8871H01M4/921H01M4/925Y02E60/50
Inventor 王孝广李瑞雪马自在何永伟王美唐宾
Owner TAIYUAN UNIV OF TECH
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