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Nickel telluride microsphere and preparation method and application thereof

A technology of nickel ditelluride and microspheres, applied in chemical instruments and methods, selenium/tellurium compounds, metal selenides/tellurides, etc., can solve problems such as poor photocatalytic stability, low light absorption coefficient, and small specific surface area , to achieve uniform morphology, high hydrogen production rate, and stable physical and chemical properties

Inactive Publication Date: 2020-07-10
NORTHWEST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Most semiconductor photocatalysts are limited by their own energy band structure and morphology structure, and can only absorb and utilize the ultraviolet part of sunlight with low light absorption coefficient, small specific surface area, and few active sites, such as ZnO and TiO 2 etc.; visible photocatalysts with visible light response, such as CdS, CdSe, Cd x Zn 1-x S(0

Method used

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  • Nickel telluride microsphere and preparation method and application thereof
  • Nickel telluride microsphere and preparation method and application thereof
  • Nickel telluride microsphere and preparation method and application thereof

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preparation example Construction

[0027] The invention provides a method for preparing nickel ditelluride microspheres, comprising the following steps:

[0028] After mixing tellurium powder, dodecanethiol and oleylamine, ultrasonic treatment is performed to obtain a tellurium precursor solution;

[0029] After mixing nickel salt, octadecene, oleylamine and oleic acid, heating and dissolving to obtain a nickel source solution;

[0030] The tellurium precursor solution is mixed with the nickel source solution for reduction reaction to obtain nickel ditelluride microspheres.

[0031] In the invention, tellurium powder, dodecanethiol and oleylamine are mixed, and subjected to ultrasonic treatment to obtain a tellurium precursor solution.

[0032] In the present invention, there is no special limitation on the specifications of the tellurium powder, and commercially available tellurium powder can be used.

[0033] In the present invention, the ratio of the amount of tellurium powder to dodecanethiol is preferabl...

Embodiment 1

[0049]Mix 0.0478g of tellurium powder with 0.3mL of dodecanethiol and 1.7mL of oleylamine, and then ultrasonically treat it for 20min at a power of 80W to obtain a tellurium precursor solution;

[0050] Mix 15mL of octadecene, 10mL of oleylamine, 0.25mL of oleic acid and 0.0642g of nickel acetylacetonate, stir for 5 minutes under a nitrogen atmosphere to form a suspension, then raise the temperature to 175°C and heat to dissolve. After the nickel acetylacetonate is dissolved, you can get Nickel source solution;

[0051] The tellurium precursor solution was added dropwise to the nickel source solution, reacted at 175°C for 30 minutes, then cooled to room temperature, washed with chloroform and ethanol for three times, and then dried to obtain nickel ditelluride microspheres.

[0052] It is measured that the average particle diameter of the nickel ditelluride microspheres obtained in this embodiment is 300 nm.

Embodiment 2

[0054] Nickel ditelluride microspheres were prepared according to the method of Example 1, except that the temperature for heating, dissolving and reacting was 200°C.

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Abstract

The invention provides a nickel telluride microsphere and a preparation method and application thereof, and belongs to the field of functional materials. The preparation method of the nickel ditelluride microsphere comprises the following steps: mixing tellurium powder, dodecanethiol and oleylamine, and performing ultrasonic treatment to obtain a precursor solution of tellurium; mixing nickel salt, octadecene, oleylamine and oleic acid, heating and dissolving to obtain and a nickel source solution; and mixing the tellurium precursor solution with the nickel source solution, and carrying out areduction reaction to obtain the nickel telluride microsphere. The nickel ditelluride microsphere obtained by the preparation method has excellent photocatalytic degradation performance on methylene blue under the irradiation of a xenon lamp, the photocatalytic degradation performance is not reduced and the crystal structure does not change after the nickel ditelluride microsphere is recycled forfive times, and the nickel ditelluride microsphere has a relatively high hydrogen production rate under the irradiation of the xenon lamp.

Description

technical field [0001] The invention relates to the field of functional materials, in particular to a nickel ditelluride microsphere and its preparation method and application. Background technique [0002] As one of the important ways to solve the problems of energy shortage and environmental pollution, photocatalytic technology has good application prospects in light energy conversion, pollution control, energy storage and so on. At present, the development of new high-efficiency, stable and low-toxic photocatalytic materials is the research focus in this field. Most semiconductor photocatalysts are limited by their own energy band structure and morphology structure, and can only absorb and utilize the ultraviolet part of sunlight with low light absorption coefficient, small specific surface area, and few active sites, such as ZnO and TiO 2 etc.; visible photocatalysts with visible light response, such as CdS, CdSe, Cd x Zn 1-x Although S(0<x<1), etc., have high l...

Claims

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Application Information

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IPC IPC(8): C01B19/00B01J27/057B01J35/00B01J35/08
CPCC01B19/007B01J27/0576C01P2002/72C01P2004/03C01P2004/04C01P2002/84C01P2004/62B01J35/51B01J35/39
Inventor 刘恩周张棋祺贾嘉薛文华樊君胡晓云
Owner NORTHWEST UNIV
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