Method for preparing polycrystalline SnSe2 material by solution method

A solution method and solution technology are applied in the field of preparing polycrystalline SnSe2 materials by solution method, which can solve the problems of secondary pollution of the environment and human body, complicated use and complicated process, and achieve high operational accessibility, high repeatability, and preparation method. simple effect

A solution method and solution technology are applied in the field of preparing polycrystalline SnSe2 materials by solution method, which can solve the problems of secondary pollution of the environment and human body, complicated use and complicated process, and achieve high operational accessibility, high repeatability, and preparation method. simple effect

CN109607495AInactive Publication Date: 2019-04-12广州新致信息科技有限公司
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  • Method for preparing polycrystalline SnSe2 material by solution method
  • Method for preparing polycrystalline SnSe2 material by solution method
  • Method for preparing polycrystalline SnSe2 material by solution method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] First, inject 20 mL of oleic acid into a 50 mL two-necked bottle, and disperse the selenium powder in the solvent to obtain the precursor solution A of the selenium source. Then put the two-neck bottle into the magnetic stirrer and add a thermometer, let the thermometer just touch the liquid surface, turn on the rotary button, observe whether the rotor will touch the thermometer, coat the thermometer and condenser tube with vaseline, and assemble the instrument. After the assembly of the instrument is completed, stir the mixed solution A, set the rotation speed at 550r / min, and the temperature at 120°C, turn on the vacuum pump to start vacuuming, and keep warm for 30min. Then, high-purity nitrogen gas was introduced to raise the temperature to 260°C and keep the temperature for 2h. Weigh 1mmolSnCl during 2 , Measure 30ml of absolute ethanol in a test tube, add SnCl 2Dissolve in absolute ethanol to obtain mixed solution B. Cool the reaction down to 70°C, extract 6ml o...

Embodiment 2

[0048] First, inject 20 mL of oleic acid into a 50 mL two-necked bottle, and disperse the selenium powder in the solvent to obtain the precursor solution A of the selenium source. Then put the two-neck bottle into the magnetic stirrer and add a thermometer, let the thermometer just touch the liquid surface, turn on the rotary button, observe whether the rotor will touch the thermometer, coat the thermometer and condenser tube with vaseline, and assemble the instrument. After the assembly of the instrument is completed, stir the mixed solution A, set the rotation speed to 500r / min, and the temperature to 130°C, turn on the vacuum pump to start vacuuming, and keep warm for 25min. Then pass high-purity argon to raise the temperature to 250°C and keep it warm for 1.5h. Weigh 1mmolSnCl during 2 , Measure 30ml of absolute ethanol in a test tube, add SnCl 2 Dissolve in absolute ethanol to obtain mixed solution B. Cool the reaction down to 80°C, extract 7ml of precursor solution A ...

Embodiment 3

[0050] First, inject 20 mL of oleic acid into a 50 mL two-necked bottle, and disperse the selenium powder in the solvent to obtain the precursor solution A of the selenium source. Then put the two-neck bottle into the magnetic stirrer and add a thermometer, let the thermometer just touch the liquid surface, turn on the rotary button, observe whether the rotor will touch the thermometer, coat the thermometer and condenser tube with vaseline, and assemble the instrument. After the assembly of the instrument is completed, stir the mixed solution A, set the rotation speed at 600r / min, the temperature at 140°C, turn on the vacuum pump to start vacuuming, and keep warm for 25min. Then, high-purity nitrogen gas was introduced to raise the temperature to 270°C and keep the temperature for 2.5h. Weigh 1mmolSnCl during 2 , Measure 30ml of absolute ethanol in a test tube, add SnCl 2 Dissolve in absolute ethanol to obtain mixed solution B. Cool the reaction down to 90°C, extract 5ml of...

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Abstract

The invention discloses a method for preparing a polycrystalline SnSe2 material by a solution method. The method comprises the steps that selenium powder is dispersed in an oleic acid solution to obtain a precursor solution A of a selenium source; then water vapor of the precursor solution A is removed under vacuuming conditions to obtain an environment without oxygen or water vapor; then the temperature rises, heating and heat preservation are conducted, and the precursor solution A is sucked to be added into a mixed solution B composed of a stannum source and ethanol to obtain a mixed solution C, wherein the volume ratio of the precursor solution A to the mixed solution B is (5-7):(25-30); then the mixed solution C is subjected to an alcohol thermal reaction, and drying is conducted to obtain SnSe2 powder. The preparation method is simple, the repeatability is high, the addition of any catalyst is not needed, expensive and complicated equipment is not involved, waste liquid generatedby the reaction is easy to handle, and the method is friendly to the environment and an operator.

Description

technical field [0001] The invention belongs to the technical field of two-dimensional layered materials, in particular to a solution method for preparing polycrystalline SnSe 2 material method. Background technique [0002] Since the discovery of graphene by two physicists at the University of Manchester in 2004, the research on two-dimensional layered materials has also been greatly promoted. When the thickness of 2D layered materials is reduced to the nanometer scale, or even atomic layer thickness, 2D layered materials can have very different properties. So far, the members of the two-dimensional layered material family have increased to forty-two, most of which are transition metal sulfides or selenides, the so-called TMD (TrAnsitionMetAlDichAlcogenides) compounds. where SnSe 2 As an important two-dimensional material of group IV-VI, Sn and Se are abundant in the crust, and SnSe 2 It has less impact on organisms and the environment, and is environmentally friendly, ...

Claims

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Application Information

Patent Timeline
12 Apr 2019
Publication
CN109607495A
IPC
C01B19/04
CPC
C01B19/007; C01P2004/32; C01P2004/61
Inventors
张荔; 郭锐