Method of preparing monodisperse ternary sulfide CuInS2

A chalcogenide, monodisperse technology, applied in chemical instruments and methods, gallium/indium/thallium compounds, inorganic chemistry, etc., can solve the problems of high toxicity of precursors, cumbersome synthesis process, high production cost, and achieve cheap raw materials. , Simple operation, low cost effect

Inactive Publication Date: 2007-10-17
SHANGHAI JIAO TONG UNIV
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  • Abstract
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  • Claims
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Problems solved by technology

Although the metal-organic monomolecular precursor pyrolysis method can sometimes obtain monodisperse ternary sulfide AgInS 2 However, due to the cumbersome synthesis process of the si

Method used

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  • Method of preparing monodisperse ternary sulfide CuInS2
  • Method of preparing monodisperse ternary sulfide CuInS2
  • Method of preparing monodisperse ternary sulfide CuInS2

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] ①In a 100ml flask, add 0.4mmol of silver nitrate, 0.4mmol of indium chloride, and 4mmol of octadecylamine into 39ml of anisole, heat to 60°C and keep it for 1 hour, then add 0.5ml of carbon disulfide, Continue magnetic stirring while adding to prepare AgInS 2 Reaction solution of nanocrystals.

[0019] ②Put the reaction solution prepared according to step ① into a high-pressure reactor with a 50ml polytetrafluoroethylene liner. After reacting at 180°C for 12 hours, the reactor is naturally cooled to 60°C, and 10ml of methanol is added. After centrifugation, use After washing several times with absolute ethanol and vacuum drying the sample, the monodisperse ternary chalcogenide AgInS 2 Nanocrystalline.

[0020] The resulting monodisperse ternary chalcogenide AgInS 2 The X-ray diffraction pattern of the nanocrystals is shown in Figure 1a. It can be seen from Figure 1a that the prepared material is orthorhombic AgInS 2 . Figure 1b is obtained AgInS 2 The energy-scat...

Embodiment 2

[0022] ①In a 100ml flask, add 0.4mmol of silver nitrate, 0.4mmol of indium chloride, and 3.2mmol of hexadecylamine into 39ml of anisole, heat to 60°C and keep it for 1 hour, then add 1ml of carbon disulfide, Continue magnetic stirring while adding to prepare AgInS 2 Reaction solution of nanocrystals.

[0023] ②Put the reaction solution prepared according to step ① into a high-pressure reactor with a 50ml polytetrafluoroethylene liner. After solvothermal heating at 180°C for 24 hours, the reactor is naturally cooled to 60°C, and 10ml of methanol is added. After centrifugation, Wash several times with absolute ethanol, and vacuum-dry the sample to obtain a monodisperse ternary chalcogenide AgInS similar to Example 1. 2 Nanocrystalline.

[0024] Figure 3 is the obtained ternary chalcogenide AgInS 2 High-resolution TEM images of nanocrystals. It can be seen from the figure that the ternary chalcogenide AgInS 2 The nanocrystals have clear lattice fringes, illustrating that the...

Embodiment 3

[0026] ①In a 100ml flask, add 0.8mmol of silver nitrate, 0.8mmol of indium chloride, and 10mmol of oleylamine into 39ml of anisole, heat to 60°C and keep it for 1 hour, add 0.5ml of carbon disulfide, add While continuing to stir magnetically, the preparation of AgInS 2 Reaction solution of nanocrystals.

[0027] ②Put the reaction solution prepared according to step ① into a high-pressure reactor with a 50ml polytetrafluoroethylene liner. After solvothermal heating at 160°C for 24 hours, the reactor is naturally cooled to 60°C, and 10ml of methanol is added. After centrifugation, Wash the sample several times with absolute ethanol and vacuum dry the sample to obtain the monodisperse ternary chalcogenide AgInS 2 Nanocrystalline.

[0028] Figure 4 is the obtained monodisperse ternary chalcogenide AgInS 2 TEM image of nanocrystals. It can be seen from the figure that the morphology and size of the product of this example are almost the same as those of Example 1, and can self-...

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Abstract

The invention relates to a method for preparing single-dispersive 3D sulfide AgInS2, which belongs to the field of nano-materials preparation. Chemical solution method is used to prepare the single-dispersive 3D sulfide AgInS2 nano-crystal by using alkylamine as the surfactant. First, cupric salt, indium salt, sulfer source and alkylamine are dispersed in the solvent to prepare the reaction solution, which is for solvent heat treatment to produce single-dispersive 3D sulfide AgInS2 nano-crystal with uniform shape. The invention is characterized in simple preparation, low cost and capable of synthersizing the single-dispersive 3D sulfide AgInS2 nano-crystal in large scale. And the prepared CuInS2 nano-crystal is of polyhedron shape, which is of 17+/-0.5nm in size and capable of self assembly in a wide range to produce single-layer nano-superlattice.

Description

technical field [0001] The invention relates to a ternary chalcogenide AgInS 2 The preparation method, especially relates to a monodisperse ternary chalcogenide AgInS 2 The preparation method of monodisperse ternary chalcogenide AgInS was prepared by chemical solvothermal method 2 . It belongs to the technical field of nanometer material preparation. Background technique [0002] Colloidal inorganic nanocrystals have attracted extensive attention from researchers in many fields. These nanocrystals have size- or shape-dependent properties and often exhibit novel electrical, magnetic, optical, and mechanical properties distinct from their bulk counterparts. Among numerous nanocrystals, colloidal semiconducting sulfides have received more research attention and achieved remarkable achievements, because these semiconducting nanocrystals exhibit obvious size confinement effects and size-dependent luminescent properties. Therefore, these semiconductor nanocrystals have been a...

Claims

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Application Information

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IPC IPC(8): C01G15/00B82B3/00
Inventor 杜卫民钱雪峰
Owner SHANGHAI JIAO TONG UNIV
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