Method for preparing Bi2(SexTe[1-x])3 monocrystal nanosheets

A single crystal nano, organic solvent technology, applied in single crystal growth, single crystal growth, chemical instruments and methods, etc., can solve the problems of harsh experimental conditions, complicated operation process of preparation methods, etc. The effect of preventing volatilization
CN105200520AInactive Publication Date: 2015-12-30GUANGDONG UNIV OF TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
GUANGDONG UNIV OF TECH
Publication Date
2015-12-30
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a method for preparing Bi2(SexTe[1-x])3 monocrystal nanosheets, which comprises the following steps: adding tellurium powder, selenium powder and an organic solvent into a high-pressure reaction kettle, stirring for 15-35 minutes, adding bismuth chloride, continuing stirring for 15-35 minutes, sealing the reaction kettle, keeping the temperature at 180-200 DEG C for 12-48 hours, carrying out solvothermal reaction, cleaning the reaction product with deionized water and anhydrous ethanol 1-3 times, carrying out vacuum drying, and collecting to obtain the end product Bi2(SexTe[1-x])3 monocrystal nanosheets. A solvothermal process is adopted, diethylenetriamine is used as the solvent, and the bismuth chloride, tellurium simple-substance powder and selenium simple-substance powder are used as precursors to synthesize the adjustable-component Bi2(SexTe[1-x])3 monocrystal nanosheets without the assistant of other surfactants; and the obtained Bi2(SexTe[1-x])3 monocrystal nanosheets have favorable crystallinity and dispersity. The preparation method is low in environmental pollution, simple in process and easy to operate and popularize, and has important research value and wide application prospects.
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Description

technical field

[0001] The invention relates to a method for preparing semiconductor nanomaterials, in particular to a method for directly preparing Bi by solvothermal method. 2 (Se x Te 1-x ) 3 The method for single crystal nano sheet belongs to the technical field of semiconductor nano material and its preparation. Background technique

[0002] The five- and six-group binary and ternary compound semiconductor nanomaterials have broad application prospects due to their special nonlinear properties, fluorescence characteristics, quantum size effects and other important physical and chemical properties. They can be used as thermoelectric and photoelectric components in various of instruments and equipment.

[0003] Thermoelectric material refrigeration is a new type of environmentally friendly refrigeration method. In China, thermoelectric materials are mainly used in small-scale refrigeration devices, such as low-power refrigeration in infrared detection, computers, and...

Claims

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