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Preparation method of RuO2-loaded B-doped TiO2 nanotube

A technology of nanotubes and distilled water, applied in chemical instruments and methods, metal/metal oxide/metal hydroxide catalysts, chemical/physical processes, etc., can solve the problems of narrow spectral response range, impractical application, and quantum efficiency Low-level problems, to achieve excellent photocatalytic activity and easy operation

Inactive Publication Date: 2020-06-02
启东润博园区管理服务有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] Titanium dioxide (TiO 2 ) Nanotube arrays (TNTs) have become a research hotspot of photocatalytic materials due to their large specific surface area, fast charge transfer, and easy recycling. However, due to their narrow spectral response range and low quantum efficiency, they are far from less than practical application requirements

Method used

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Examples

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Effect test

Embodiment 1

[0019] a RuO 2 Loaded B-doped TiO 2 The preparation method of nanotubes comprises the following steps: placing the titanium foil in acetone, alcohol and distilled water for ultrasonic cleaning for 35 minutes, and then putting it into HF-HNO with a volume ratio of 1:4:2 3 -H 2 In O polishing solution, chemically polish for 75s, rinse with distilled water and dry; the titanium foil is used as the anode, the graphite rod is used as the cathode, the distance between the two electrodes is 5cm, the height of insertion into the electrolyte is 12mm, and the electrolyte is added with 9% H 2 O, 0.3% NH 4 F and 0.5% NaBF 4 The ethylene glycol mixed solution was oxidized at 35°C and 58V voltage with magnetic stirring for 3h; placed in ethylene glycol and distilled water for ultrasonic cleaning, and then heat-treated at 520°C for 3h after drying to obtain B-doped TiO 2 nanotubes; RuCl with a concentration of 0.002mol / L 3 The ethanol aqueous solution was electrolyzed at 0.65V for 40 mi...

Embodiment 2

[0021] a RuO 2 Loaded B-doped TiO 2 The preparation method of nanotubes comprises the following steps: placing the titanium foil in acetone, alcohol and distilled water for ultrasonic cleaning for 30 minutes, and then putting it into HF-HNO with a volume ratio of 1:4:2 3 -H 2 In O polishing solution, chemically polish for 70s, rinse with distilled water and dry; titanium foil is used as anode, graphite rod is used as cathode, the distance between the two electrodes is 4.5cm, the height of insertion into the electrolyte is 11mm, and the electrolyte is added with a mass fraction of 9% H 2 O, 0.3% NH 4 F and 0.5% NaBF 4 The ethylene glycol mixture was oxidized at 34°C and 57V voltage with magnetic stirring for 2.5h; ultrasonically cleaned in ethylene glycol and distilled water respectively, and heat-treated at 510°C for 2.5h after drying to obtain B-doped TiO 2 nanotubes; RuCl with a concentration of 0.002mol / L 3 The ethanol aqueous solution was electrolyzed at 0.6V for 35 m...

Embodiment 3

[0023] a RuO 2 Loaded B-doped TiO 2 The preparation method of nanotubes comprises the following steps: placing the titanium foil in acetone, alcohol and distilled water for ultrasonic cleaning for 40 minutes, and then putting it into HF-HNO with a volume ratio of 1:4:2 3 -H 2 In O polishing solution, chemically polish for 80s, rinse with distilled water and dry; the titanium foil is used as the anode, the graphite rod is used as the cathode, the distance between the two electrodes is 5.5 cm, the height of the electrolyte inserted is 13 mm, and the electrolyte is added with a mass fraction of 9% H 2 O, 0.3% NH 4 F and 0.5% NaBF 4 The ethylene glycol mixture was oxidized at 36°C and 59V voltage with magnetic stirring for 3.5h; ultrasonically cleaned in ethylene glycol and distilled water respectively, and heat-treated at 530°C for 3.5h after drying to obtain B-doped TiO 2 nanotubes; RuCl with a concentration of 0.002mol / L 3 The ethanol aqueous solution was electrolyzed at 0...

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Abstract

The invention discloses a preparation method of a RuO2-loaded B-doped TiO2 nanotube. The method comprises the following steps: respectively putting a titanium foil into acetone, alcohol and distilledwater, carrying out ultrasonic treatment for 30-40 minutes, polishing for 70-80 seconds, rinsing, and airing, wherein the titanium foil is used as an anode, a graphite rod is used as a cathode, an electrolytic solution is an ethylene glycol mixed solution added with H2O, NH4F and NaBF4, and oxidation is carried out for 2.5-3.5 h; respectively putting into ethylene glycol and distilled water, carrying out ultrasonic cleaning, drying, and carrying out heat treatment for 2.5-3.5 hours to obtain B-doped TiO2 nanotube; and placing a RuCl3 ethanol aqueous solution under a voltage of 0.6-0.7 V, carrying out electrolysis for 35-45 min to obtain an impregnation liquid, placing the sample in the impregnation liquid for 16-18 h, washing with water, drying, carrying out calcination for 3-4 h, and cooling. The RuO2-loaded B-doped TiO2 nanotube prepared by the method has excellent photocatalytic activity.

Description

technical field [0001] The present invention relates to a kind of RuO 2 Loaded B-doped TiO 2 Methods for the preparation of nanotubes. Background technique [0002] Titanium dioxide (TiO 2 ) Nanotube arrays (TNTs) have become a research hotspot of photocatalytic materials due to their large specific surface area, fast charge transfer, and easy recycling. However, due to their narrow spectral response range and low quantum efficiency, they are far from less than the requirements of practical applications. Non-metal element doping modified TiO 2 It can produce a new hybrid valence state, which is an effective means to solve its narrow spectral response range and then achieve visible light response. Commonly used non-metallic doping elements include N, B, and halogen. In recent years, there have been many research reports on B doping modification, all of which can effectively improve the photocatalytic activity under visible light, but if the preparation methods are differ...

Claims

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Application Information

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IPC IPC(8): B01J23/46
CPCB01J23/462
Inventor 不公告发明人
Owner 启东润博园区管理服务有限公司
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