A carbon nanotube/secondary anodized tio 2 Nanotube photocatalyst material and its preparation method and application

A technology of secondary anodic oxidation and carbon nanotubes, applied in the direction of physical/chemical process catalysts, chemical instruments and methods, water/sludge/sewage treatment, etc., can solve the problem of high cost and achieve cost reduction, high purity, and high-efficiency Enhanced effect

Active Publication Date: 2020-06-26
NORTHEAST GASOLINEEUM UNIV
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Problems solved by technology

[0007] Aiming at the problem of high cost existing in the modification of noble metals, the present invention provides a method for secondary anodic oxidation of TiO using carbon nanotubes. 2 nanotube modification method, prepared a carbon nanotube / anodized TiO 2 nanotube photocatalyst material

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  • A carbon nanotube/secondary anodized tio <sub>2</sub> Nanotube photocatalyst material and its preparation method and application
  • A carbon nanotube/secondary anodized tio <sub>2</sub> Nanotube photocatalyst material and its preparation method and application
  • A carbon nanotube/secondary anodized tio <sub>2</sub> Nanotube photocatalyst material and its preparation method and application

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preparation example Construction

[0047] The invention provides a carbon nanotube / anodized TiO 2 The preparation method of nanotube photocatalyst material, described preparation method comprises the steps:

[0048] (1) Preparation of anodized TiO 2 nanotube material. This preparation step can adopt the existing electrochemical anodic oxidation method or adopt the following method provided by the present invention: use the titanium sheet as the anode, the platinum sheet as the cathode, and the mixed solution composed of ammonium fluoride, ethylene glycol and water as the electrolyte, carry out electrolysis. Before electrolysis, the titanium sheet can be pretreated, and the pretreatment can be carried out as follows: the titanium sheet is ultrasonically cleaned in acetone, absolute ethanol and distilled water for 15-20 minutes, and then dried in nitrogen. The pretreated titanium sheet is connected to the positive electrode of the DC power supply as the anode, and the platinum sheet is connected to the negativ...

Embodiment 1

[0064] The titanium sheet was ultrasonically cleaned in acetone, absolute ethanol and distilled water for 15 min, and dried in nitrogen. Two-electrode system is adopted: the power supply adopts a DC stabilized power supply, and the titanium sheet is used as the anode to connect to the positive electrode of the DC power supply, and the platinum sheet (2cm×2cm) is connected to the negative electrode of the power supply as the counter electrode. 4 F+(CH 2 Oh) 2 +2vol%H 2 In the electrolyte solution composed of a mixed solution of O, the electrolysis was carried out at a constant voltage of 50V at room temperature, and the electrolysis time was 30min. After the reaction, the titanium sheet was rinsed with distilled water, placed in a muffle furnace in an air atmosphere, and the temperature was raised from room temperature to 450°C at a rate of 5°C / min, and the temperature was kept constant for 1h. The prepared primary anodized TiO 2 nanotube.

[0065] Will grow once anodized T...

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Abstract

The invention relates to a carbon nanotube / secondary anodized TiO2 nanotube photo-catalyst material as well as a preparation method and application thereof. The preparation method comprises the following steps: (1) preparing a primary anodized TiO2 nanotube material; (2) preparing a secondary anodized TiO2 nanotube material and then modifying a carbon nanotube after the step (2), wherein the carbon nanotube modification step comprises the following steps: (a) taking molten carbonate as an electrolyte, the secondary anodized TiO2 nanotube material as a cathode and a metal electrode as an anodefor electrolysis; (b) performing ultrasonic pickling and drying on the cathode after electrolysis to obtain the carbon nanotube / secondary anodized TiO2 nanotube photo-catalyst material. The method islow in cost, and the generated carbon nanotube has higher purity due to unique self growth mechanism in molten salt, thereby having unique electrochemical property.

Description

technical field [0001] The invention relates to the technical field of photocatalyst materials, in particular to a carbon nanotube / secondary anodized TiO 2 Nanotube photocatalyst material and its preparation method and application. Background technique [0002] The radiation from the sun's energy to the ground mainly includes three parts: ultraviolet light, visible light and infrared light, which contain almost all the energy of the sun. Using the STEP (Solar Thermal Electrochemical Process) theory to carry out solar STEP thermal-electric two-field coupling degradation of organic wastewater only uses the energy of the infrared and visible light parts of the solar energy, while the energy of the solar ultraviolet light part is basically useless. get used. [0003] Semiconductor photocatalysis technology can directly utilize the solar ultraviolet part energy, a natural energy source, and applying its design to the STEP full-spectrum utilization reaction system is the most ef...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J21/18C02F1/32C02F101/38
CPCB01J21/185B01J35/0033B01J35/004C02F1/32C02F2101/38C02F2305/10
Inventor 谷笛谷柏王宝辉吴红军张梅李莉
Owner NORTHEAST GASOLINEEUM UNIV
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