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A preparing method of a platinum nanometer particle/titanium dioxide nanotube array, an electrode, a non-enzymatic glucose sensor and a composite material

A nanotube array and platinum nanoparticle technology, applied in the field of materials, can solve the problems of poor uniformity of the modified film layer, long time consumption, large amount of consumption, etc., and achieve the effects of improving photoelectric performance, improving catalytic ability and simple process.

Active Publication Date: 2016-11-30
SUZHOU LAVENNANO TECH INC
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Problems solved by technology

However, the reaction process of oxidative self-polymerization of dopamine to obtain polydopamine through the traditional impregnation method takes a long time, requires a large amount, and the uniformity of the modified film layer is poor.

Method used

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  • A preparing method of a platinum nanometer particle/titanium dioxide nanotube array, an electrode, a non-enzymatic glucose sensor and a composite material
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  • A preparing method of a platinum nanometer particle/titanium dioxide nanotube array, an electrode, a non-enzymatic glucose sensor and a composite material

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preparation example Construction

[0037] A method for preparing a platinum nanoparticle / titanium dioxide nanotube array, comprising:

[0038] S1. Titanium sheets can be used as the substrate, and the titanium sheets are pretreated first.

[0039] Specifically, the titanium sheet is cleaned. Wherein, the titanium sheet is pure titanium or titanium alloy, and its size is 1.5cm×3.0cm. Use dilute nitric acid, acetone, ethanol and deionized water to clean the titanium sheet ultrasonically for 20-40 minutes.

[0040] S2. Preparation of TiO by anodic oxidation 2 array of nanotubes.

[0041] Specifically, the cleaned titanium sheet is used as the anode, the platinum sheet is used as the cathode, and the ethylene glycol solution of ammonium fluoride and water is used as the electrolyte, a certain voltage is applied, and anodic oxidation is performed twice, and TiO is obtained by anodic oxidation. 2 Nanotube arrays, then calcined to obtain anatase TiO with better crystal form 2 array of nanotubes.

[0042] Wherein...

Embodiment 1

[0058] (1) Pretreatment of titanium sheet and preparation of TiO by secondary anodic oxidation 2 array of nanotubes. The pure titanium sheet substrate was ultrasonically cleaned with dilute nitric acid, acetone, absolute ethanol, and deionized water for 15 minutes in sequence. Use the platinum sheet electrode as the cathode, insert it into the electrolyte solution containing 98v% ethylene glycol (ammonium fluoride 0.3wt%) and 2v% water at the same time, apply a voltage of 40V for anodic oxidation for 1.5h, after the film layer is peeled off by ultrasonic, continue to apply a voltage of 40V Anodized for 8 minutes to produce TiO 2 The nanotube array was then calcined at 450°C for 2h to transform from amorphous state to anatase.

[0059] (2) A method of electropolymerizing polydopamine-induced reduction was used to prepare platinum nanoparticle-composite titania nanotube arrays. Prepare 50ml of 1.5mg / ml Tris, adjust the pH to 7.0, make a buffer solution, add 0.1g of dopamine h...

Embodiment 2

[0077] (1) Pretreatment of titanium sheet and preparation of TiO by secondary anodic oxidation 2 array of nanotubes. Clean the pure titanium substrate with dilute nitric acid, acetone, absolute ethanol, and deionized water for 10 minutes. Take the platinum sheet electrode as the cathode, insert it into the electrolyte solution containing 97v% ethylene glycol (ammonium fluoride 0.4wt%) and 3v% water at the same time, apply a voltage of 50V for anodic oxidation for 2h, after the film layer is peeled off by ultrasonic, continue to apply a voltage of 50V for the anode Oxidation for 6 minutes to produce TiO 2 The nanotube array was then calcined at 450°C for 1.5h to transform it from an amorphous state to anatase.

[0078] (2) A method of electropolymerizing polydopamine-induced reduction was used to prepare platinum nanoparticle-composite titania nanotube arrays. Prepare 50ml of 1.2mg / ml Tris, adjust the pH to 7.5, make a buffer solution, add 0.2g dopamine hydrochloride to obta...

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Abstract

A preparing method of a platinum nanometer particle / titanium dioxide nanotube array, an electrode, a non-enzymatic glucose sensor and a composite material are disclosed. The method includes S1), pretreating a titanium sheet, S2) preparing a TiO2 nanotube array through an anodizing manner, S3) preparing a biomimetic polydopamine coating on TiO2 nanotubes through adopting an electropolymerization manner, S4) based on the polydopamine coating and by utilizing the reducibility of itself, loading platinum nanometer particles onto the surface of the titanium dioxide nanotubes and S5) performing performance testing of the non-enzymatic glucose sensor by utilizing the prepared working electrode. According to the platinum nanometer particle / titanium dioxide nanotube array, a composite of the platinum nanometer particles and the titanium dioxide nanotubes is prepared through reduction by adopting a polydopamine electropolymerization manner. The platinum nanometer particle / titanium dioxide nanotube array can be used for manufacturing the non-enzymatic glucose sensor finally. Through a manner of reducing the platinum nanometer particles by the electropolymerization-loaded biomimetic polydopamine, problems that auto-agglutination in traditional polydopamine dipping methods is long in time, poor in uniformity, and the like are overcome.

Description

technical field [0001] The invention relates to the field of materials, in particular to a preparation method of a platinum nanoparticle / titanium dioxide nanotube array, an electrode, a non-enzyme glucose sensor and a composite material. Background technique [0002] Titanium dioxide (TiO 2 ), as a new type of n-type semiconductor material, has outstanding chemical stability, photoelectric properties, biocompatibility, corrosion resistance, etc., and has been widely used in photocatalytic degradation of pollutants, fuel-sensitized solar cells, biomedical materials, gas sensors, and hydrogen production by photolysis of water. Nano-TiO 2 In addition to the same surface effect, low size effect, quantum size effect and macroscopic quantum tunneling effect as ordinary nanomaterials, it also has its special properties, especially catalytic performance. [0003] Compared with TiO 2 Nanoparticles, TiO 2 Nanotube arrays have the advantages of large specific surface area, high su...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D11/26C25D9/02C25B3/00C23C18/42C23C28/00G01N27/30B82Y40/00
CPCC23C18/42C25B3/00C25D9/02C25D11/26B82Y40/00C23C28/322C23C28/3455G01N27/30
Inventor 赖跃坤蔡京升黄剑莹王涛何志成
Owner SUZHOU LAVENNANO TECH INC
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