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Preparation method of porous nickel selenide hollow nanospheres

A nickel selenide, hollow sphere technology, applied in nanotechnology, nanotechnology, binary selenium/tellurium compounds, etc., can solve problems such as environmental impact, and achieve the effects of reducing energy consumption, facilitating mass production, and low synthesis temperature

Active Publication Date: 2013-01-16
指南者品牌管理(苏州)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this method uses organic solvents to participate in the reaction, which has a certain impact on the environment, and the synthesized nickel diselenide nanomaterials

Method used

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  • Preparation method of porous nickel selenide hollow nanospheres
  • Preparation method of porous nickel selenide hollow nanospheres
  • Preparation method of porous nickel selenide hollow nanospheres

Examples

Experimental program
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Effect test

Embodiment 1

[0027] The preparation of porous nickel selenide nanometer hollow spheres comprises the following steps:

[0028] Step A, selenium dioxide, nickel nitrate and deionized water are mixed and stirred quickly according to the ratio of selenium dioxide: nickel nitrate: deionized water: 1mmol: 1mmol: 18mL, to obtain a transparent clear liquid;

[0029] Step B, add 10mL concentrated ammonia water (25%~28%), stir and make it evenly mixed;

[0030] Step C, add 12mL hydrazine hydrate (85%), stir and make it evenly mixed;

[0031] Step D, transfer the mixed system to a polytetrafluoroethylene-lined reaction kettle, keep the temperature at 180° C. for 2 hours, and cool naturally to obtain a hydrothermal product;

[0032] Step E, centrifuging the hydrothermal product described in step D, washing with absolute ethanol and deionized water three times;

[0033] Step F, vacuum-dry the product obtained in step E at 80° C. for 12 hours to obtain porous nickel selenide hollow nanospheres.

[0...

Embodiment 2

[0041] The preparation of porous nickel selenide nanometer hollow spheres comprises the following steps:

[0042] Step A, selenium dioxide, nickel nitrate and deionized water are mixed and stirred quickly according to the ratio of selenium dioxide: nickel nitrate: deionized water: 1mmol: 1mmol: 20mL, to obtain a transparent clear liquid;

[0043] Step B, add 8mL concentrated ammonia water (25%~28%), stir and make it evenly mixed;

[0044] Step C, add 12mL hydrazine hydrate (85%), stir and make it evenly mixed;

[0045] Step D, transfer the mixed system to a polytetrafluoroethylene-lined reaction kettle, keep the temperature at 140° C. for 2 hours, and cool naturally to obtain a hydrothermal product;

[0046] Step E, centrifuging the hydrothermal product described in step D, washing with absolute ethanol and deionized water three times;

[0047] Step F, vacuum-dry the product obtained in step E at 60°C for 12 hours to obtain porous nickel selenide hollow nanospheres.

Embodiment 3

[0049] The preparation of porous nickel selenide nanometer hollow spheres comprises the following steps:

[0050]Step A, selenium dioxide, nickel nitrate and deionized water are mixed and stirred quickly according to the ratio of selenium dioxide: nickel nitrate: deionized water: 1mmol: 2mmol: 20mL, to obtain a transparent clear liquid;

[0051] Step B, add 10mL concentrated ammonia water (25%~28%), stir and make it evenly mixed;

[0052] Step C, add 10mL hydrazine hydrate (85%), stir and make it evenly mixed;

[0053] Step D, transfer the mixed system to a polytetrafluoroethylene-lined reaction kettle, keep the temperature at 180° C. for 2 hours, and cool naturally to obtain a hydrothermal product;

[0054] Step E, centrifuging the hydrothermal product described in step D, washing with absolute ethanol and deionized water three times;

[0055] Step F, vacuum-dry the product obtained in step E at 80° C. for 12 hours to obtain porous nickel selenide hollow nanospheres.

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Abstract

The invention belongs to the technical field of nanometer material, relates to a synthetic method for preparing porous hollow nanospheres with uniform appearance through a hydrothermal process, and particularly relates to a preparation method of porous nickel selenide hollow nanospheres. The preparation method comprises the steps as follows: positioning selenium dioxide and nickel nitrate into alkaline aqueous solution of ammonia water; and preparing the porous hollow nanospheres through the hydrothermal process under the reduction effect of hydrazine hydrate. The nickel selenide hollow nanospheres prepared by the preparation method provided by the invention have the diameter of 300 to 400nm, and are formed by self-assembling 30 to 50nm of porous nickel selenide. The preparation method provided by the invention is simple in technology, and high in repeatability; and the used nickel source and selenium source are the inorganic compounds, low in cost, easy to obtain, low in cost, and meets the environment-friendly requirement; the method can be conducted without pre-processing such as ageing and roasting; the resultant temperature is low, therefore, the energy consumption and the reacting cost are reduced; and the mass production can be conveniently conducted.

Description

technical field [0001] The invention belongs to the technical field of nanomaterial preparation, and relates to a synthesis method for preparing porous nano hollow spheres with uniform appearance by using a hydrothermal method, in particular to a preparation method for porous nickel selenide nano hollow spheres. Background technique [0002] The bandgap of selenide semiconductor materials is generally between 0.3 and 3.0 eV. It is an important direct bandgap semiconductor material with excellent semiconductor properties. It has very broad applications in semiconductor light-emitting devices, optoelectronic devices, and thermoelectric devices. application prospects. The research on their preparation method and optical, electrical, magnetic and other properties has become the focus of people's attention. Therefore, in recent years, people have conducted a lot of research on the preparation method, performance and application of selenide semiconductor nanomaterials, and some a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B19/04B82Y30/00B82Y40/00
Inventor 施伟东张宪范伟强蒋金辉车广波
Owner 指南者品牌管理(苏州)有限公司
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