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Preparation method and use method of CuS modified immobilized TiO2 nanoribbon photocatalyst

A photocatalyst and nanobelt technology, applied in the direction of physical/chemical process catalysts, chemical instruments and methods, chemical/physical processes, etc., to achieve the effects of improving utilization, recycling, and improving contact

Active Publication Date: 2015-03-25
QINGDAO AGRI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, to achieve TiO 2 There are still many obstacles to the practical application of photocatalysts, therefore, it is urgent to design and prepare an efficient photocatalyst with practical value

Method used

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  • Preparation method and use method of CuS modified immobilized TiO2 nanoribbon photocatalyst
  • Preparation method and use method of CuS modified immobilized TiO2 nanoribbon photocatalyst
  • Preparation method and use method of CuS modified immobilized TiO2 nanoribbon photocatalyst

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Effect test

Embodiment 1

[0028] A CuS-modified immobilized TiO 2 The preparation method of nanobelt photocatalyst is characterized in that, specifically comprises the following steps:

[0029] (1) Pretreatment of the titanium sheet: first, the titanium sheet with a thickness of 0.5 mm is cut into a specification of 90 mm × 40 mm, then, in ethanol and acetone with a purity of 99.5%, it is ultrasonically cleaned at 150 W for 10 min, and Pickling for 30s, the mass ratio of pickling is HF:HNO 3 :H 2 The mixed solution composed of O=1:4:5 was finally rinsed with deionized water and dried in air at 105°C for 1 hour for later use;

[0030] (2) Immobilized TiO 2 Preparation of nanoribbon: carry out electrochemical anodic oxidation treatment to titanium sheet, with titanium sheet as anode, platinum sheet as cathode, electrolyte is ethylene glycol, contains 5vol% water and 0.5wt% ammonium fluoride in the electrolyte, keeps The voltage is 60 constant voltage, the temperature is 25°C constant temperature, the...

Embodiment 2

[0034] A CuS-modified immobilized TiO 2 The preparation method of nanobelt photocatalyst is characterized in that, specifically comprises the following steps:

[0035] (1) Pretreatment of the titanium sheet: first, the titanium sheet with a thickness of 0.5 mm is cut into a specification of 90 mm × 40 mm, then, in ethanol and acetone with a purity of 99.5%, it is ultrasonically cleaned at 150 W for 10 min, and Pickling for 30s, the mass ratio of pickling is HF:HNO 3 :H 2 The mixed solution composed of O=1:4:5 was finally rinsed with deionized water and dried in air at 105°C for 1 hour for later use;

[0036] (2) Immobilized TiO 2 Preparation of nanoribbon: carry out electrochemical anodic oxidation treatment to titanium sheet, with titanium sheet as anode, platinum sheet as cathode, electrolyte is ethylene glycol, contains 5vol% water and 0.5wt% ammonium fluoride in the electrolyte, keeps The voltage is 70V constant voltage, the temperature is 25°C constant temperature, th...

Embodiment 3

[0040] A CuS-modified immobilized TiO 2 The preparation method of nanobelt photocatalyst is characterized in that, specifically comprises the following steps:

[0041] (1) Pretreatment of the titanium sheet: first, the titanium sheet with a thickness of 0.5 mm is cut into a specification of 90 mm × 40 mm, then, in ethanol and acetone with a purity of 99.5%, it is ultrasonically cleaned at 150 W for 10 min, and Pickling for 30s, the mass ratio of pickling is HF:HNO 3 :H 2 The mixed solution composed of O=1:4:5 was finally rinsed with deionized water and dried in air at 105°C for 1 hour for later use;

[0042] (2) Immobilized TiO 2 Preparation of nanoribbon: carry out electrochemical anodic oxidation treatment to titanium sheet, with titanium sheet as anode, platinum sheet as cathode, electrolyte is ethylene glycol, contains 5vol% water and 0.5wt% ammonium fluoride in the electrolyte, keeps The voltage is 80V constant voltage, the temperature is 25°C constant temperature, th...

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Abstract

The invention discloses a preparation method and use method of a CuS modified immobilized TiO2 nanoribbon photocatalyst. The preparation method of the CuS modified immobilized TiO2 nanoribbon photocatalyst is characterized by comprising the following specific steps: (1) pretreating a titanium sheet; (2) anodizing the titanium sheet electrochemically to prepare an immobilized nanoribbon; and (3) preparing a CuS modified immobilized TiO2 nanoribbon by adopting the successive ionic layer adsorption and reaction process. The CuS modified immobilized TiO2 nano photocatalyst prepared by adopting the preparation method can absorb visible light, can promote the separation of photo-generated electrons from holes to have high photocatalytic efficiency and can be used for effectively removing organic contaminants in environment to avoid causing nano pollution.

Description

technical field [0001] The invention belongs to the field of preparation of photocatalytic materials using solar energy to treat pollutants in the environment, and relates to a CuS-modified immobilized TiO 2 Preparation and use of nanobelt photocatalyst. Background technique [0002] TiO 2 Semiconductor photocatalysts have shown promising application prospects in environmental governance and thus have been extensively studied in the past decades. However, to achieve TiO 2 There are still many obstacles to the practical application of photocatalysts. Therefore, it is urgent to design and prepare an efficient photocatalyst with practical value. TiO 2 The morphology of photocatalyst is an important factor affecting its photocatalytic performance, which can affect the separation of carriers, the number of surface active sites and the size of the accessible surface area, etc. TiO with good morphology 2 Photocatalysts can ensure that they have a high accessible surface area, ...

Claims

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Application Information

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IPC IPC(8): B01J27/04A62D3/17A62D101/28
Inventor 陈清华辛言君
Owner QINGDAO AGRI UNIV
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