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Method for preparing aluminum-doping zinc oxide nanometer sheet with photo-catalysis function

A nanosheet, photocatalytic technology, applied in nanostructure manufacturing, nanotechnology, nanotechnology and other directions, can solve the problems of expensive equipment, complex preparation process, high energy consumption, and achieve good application prospects and significant photocatalytic degradation effect.

Inactive Publication Date: 2010-06-02
TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Commonly used methods for preparing doped ZnO nanomaterials include pulsed laser deposition, chemical vapor deposition, physical vapor deposition, molecular beam epitaxy, ion implantation, etc. However, these methods usually require expensive equipment, high energy consumption and preparation process complex

Method used

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  • Method for preparing aluminum-doping zinc oxide nanometer sheet with photo-catalysis function
  • Method for preparing aluminum-doping zinc oxide nanometer sheet with photo-catalysis function
  • Method for preparing aluminum-doping zinc oxide nanometer sheet with photo-catalysis function

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Experimental program
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Effect test

Embodiment 1

[0018] The ITO glass with a size of 1×3 cm was ultrasonically cleaned with acetone, ethanol and water for 5 minutes in sequence, and dried for later use. Formulated with Zn(NO 3 ) 2 The concentration is 5mM, Al(NO 3 ) 3 An aqueous solution with a concentration of 0.1 mM was used as the electrolyte. The electrolyte solution was poured into the electrolytic cell, with a Pt sheet as the counter electrode, a saturated calomel electrode (SCE) as the reference electrode, and a cleaned ITO glass as the working electrode. Use a water bath to control the temperature of the electrolyte in the electrolytic cell to 80°C, apply a potential of -1.2V to the working electrode relative to the reference electrode through an electrochemical analyzer, and react for 60 minutes to obtain a white film on the working electrode, which is The product Al doped ZnO nanosheets, the morphology is as follows figure 1 As shown in (a), the thickness of the nanosheet is about 20 nm, and the doping amount ...

Embodiment 2

[0020] The FTO glass with a size of 1×3 cm was ultrasonically cleaned with acetone, ethanol and water for 5 minutes in sequence, and then dried for later use. Formulated with Zn(NO 3 ) 2 The concentration is 100mM, AlCl 3 An aqueous solution with a concentration of 0.1 mM was used as the electrolyte. The electrolyte solution was poured into the electrolytic cell, with a Pt sheet as the counter electrode, a saturated calomel electrode (SCE) as the reference electrode, and a cleaned FTO glass as the working electrode. Use a water bath to control the temperature of the electrolyte in the electrolytic cell to 80°C, apply a potential of -1.2V to the working electrode relative to the reference electrode through an electrochemical analyzer, and react for 60 minutes to obtain a white film on the working electrode, which is The product Al doped ZnO nanosheets, the morphology is as follows figure 1 As shown in (b), the thickness of the nanosheet is about 10 nm, and the doping amount...

Embodiment 3

[0022] The ITO glass with a size of 1×3 cm was ultrasonically cleaned with acetone, ethanol and water for 5 minutes in sequence, and dried for later use. Formulated with Zn(NO 3 ) 2 The concentration is 50mM, Al(NO 3 ) 3 An aqueous solution with a concentration of 0.1 mM was used as the electrolyte. The electrolyte solution was poured into the electrolytic cell, with a Pt sheet as the counter electrode, a saturated calomel electrode (SCE) as the reference electrode, and a cleaned ITO glass as the working electrode. Use a water bath to control the temperature of the electrolyte in the electrolytic cell to 90°C, apply a potential of -1.6V to the working electrode relative to the reference electrode through an electrochemical analyzer, and react for 60 minutes to obtain a white film on the working electrode, which is The product Al doped ZnO nanosheets, the morphology is as follows figure 1 As shown in (c), the thickness of the nanosheet is about 500 nm, and the doping amoun...

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Abstract

The invention belongs to the preparing technical field of nanometer material, in particular relates to a method for preparing aluminum-doping zinc oxide nanometer sheet with photo-catalysis function by electrochemical deposition. The invention uses water solution of zinc salt and aluminum salt as electrolyte solution; the electrochemical deposition process is carried out in a standard three-electrode system; electrolyte solution is poured in an electrolytic cell; platinum sheet is used as counter electrode, saturated calomel electrode is used as reference electrode, and an electric conductive base is used as work electrode; the electrolytic cell is heated with water; electrolyte solution in the electrolytic cell is kept at the temperature of 70-90 DEG C; the work electrode is applied with electric potential being -0.8 to -1.6 V relative to the reference electrode; after reaction, aluminum-doping zinc oxide nanometer sheet is obtained on the electric conductive base. The aluminum-doping zinc oxide nanometer sheet shows obvious photo-catalysis degradation effect upon methyl orange, and has great application foreground in the field of environmental improvement.

Description

technical field [0001] The invention belongs to the technical field of nanometer material preparation, and in particular relates to a method for preparing Al-doped ZnO nanosheets with photocatalytic function by electrochemical deposition. Background technique [0002] ZnO is an important wide bandgap (Eg=3.34eV) semiconductor material and has broad application prospects in the field of electronic and optoelectronic devices. In recent years, the preparation, properties and application research of ZnO nanomaterials have attracted widespread attention, and a variety of methods have been developed to prepare nanostructures such as ZnO nanoparticles, nanowires and nanosheets, such as the gas phase method (Adv.Mater.2001, 13, 113), solution method (Angew. Chem. Int. Ed. 2003, 42, 3031), sol-gel method, etc. (J Adv. Mater. 2005, 17, 1873). Based on ZnO nanomaterials, many nanodevices with excellent performance have been constructed, such as emitters, lasers, light-emitting diodes,...

Claims

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Application Information

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IPC IPC(8): B82B3/00C25D5/54
Inventor 佘广为师文生
Owner TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
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