Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Method for preparing Nano nickelous diselenide in hexagon

A nickel diselenide and hexagonal technology, which is applied in nanostructure manufacturing, binary selenium/tellurium compounds, nanotechnology, etc., can solve the problems of unfavorable product shape control and large size, and achieve controllable shape and operation Simple, efficient effect

Inactive Publication Date: 2009-08-12
SHANGHAI JIAO TONG UNIV
View PDF1 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the current synthesis methods of nickel diselenide, the commonly used methods include hydrothermal synthesis, solvothermal synthesis, etc., but generally only irregularly shaped agglomerated particles or larger micron-sized materials can be obtained.
Such as: the preparation of nickel diselenide by the hydrothermal method, all obtain products with irregular shapes or severely agglomerated nanoparticles, which is not conducive to the control of product morphology; in addition, ethylenediamine, pyridine or N, N-diformyl The solvothermal synthesis method with imine as the reaction medium can only synthesize irregularly agglomerated particles, and some even have larger micron-sized nickel diselenide

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for preparing Nano nickelous diselenide in hexagon
  • Method for preparing Nano nickelous diselenide in hexagon
  • Method for preparing Nano nickelous diselenide in hexagon

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] ①In a 100ml beaker, add 0.4mmol of nickel acetylacetonate and 1ml of oleic acid to 39ml of anisole, stir magnetically for 30 minutes and then add 0.8mmol of selenium powder to prepare the reaction of nickel diselenide liquid.

[0019] ② Transfer the reaction solution prepared according to step ① into a high-pressure reactor with a 50ml polytetrafluoroethylene liner. After solvent heating at 180°C for 24 hours, the reactor was naturally cooled to room temperature, centrifuged, and washed with absolute ethanol for several Once, the sample was vacuum-dried to obtain nickel diselenide nanostars with a hexagonal shape.

[0020] The X-ray diffraction pattern of the nickel diselenide nanostar of the obtained hexagonal shape is as follows figure 1 a. Depend on figure 1 a It can be seen that the prepared material is nickel diselenide in cubic crystal form. figure 1 b is the energy dispersive X-ray analysis spectrum of the hexagonal nickel diselenide nanostar. It can be seen ...

Embodiment 2

[0022] ①In a 100ml beaker, add 1mmol of nickel acetylacetonate and 5ml of oleic acid into 35ml of anisole, stir magnetically for 30 minutes and then add 2mmol of selenium powder to prepare a reaction solution of nickel diselenide.

[0023] ②Put the reaction solution prepared according to step ① into a high-pressure reactor with a 50ml polytetrafluoroethylene liner. After solvent heating at 200°C for 12 hours, the reactor is naturally cooled to room temperature, centrifuged, and washed with absolute ethanol for several Once, the samples were vacuum-dried. Then hexagonal nickel diselenide nanostars with slightly larger size can be obtained.

[0024] image 3 It is a transmission electron microscope photo of the hexagonal nickel diselenide nanostar obtained under the condition of solvent heat treatment at 200°C for 12 hours. It can be seen from the figure that the distance between the two symmetrical corners of the hexagonal nickel diselenide nanostar increases to 300nm.

Embodiment 3

[0026] ①In a 100ml beaker, add 0.4mmol of nickel acetylacetonate and 2ml of oleic acid to 38ml of anisole, stir magnetically for 30 minutes and then add 0.8mmol of selenium powder to prepare the reaction of nickel diselenide liquid.

[0027] ②Put the reaction solution prepared according to step ① into a high-pressure reactor with a 50ml polytetrafluoroethylene liner, heat it in a solvent at 160°C for 8 hours, then cool the reactor to room temperature naturally, centrifuge, and wash with absolute ethanol for several Once, the samples were vacuum-dried. The nickel diselenide nanostars with hexagonal shape can be obtained. Figure 4 It is the field emission scanning electron micrograph of the hexagonal nickel diselenide nanostar obtained in Example 3.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

This invention relates to a method for preparing hexagonal NiSe2 nanostars. The method utilizes oleic acid as the surfactant, Se powder as the Se source and organic solvent as the reaction medium, and adopts chemical solution method to prepare ordered hexagonal NiSe2 nanostars. The method comprises: dissolving nickel salt, Se source and surfactant in an organic solvent to prepare the reaction solution, performing solvent thermal treatment on the reaction solution, and controlling the reaction temperature and time to obtain ordered hexagonal NiSe2 nanostars. The method is simple, and the morphology of the obtained NiSe2 nanostars is controllabled. Each angle of the hexagonal NiSe2 nanostars is 85 nm, and the central core is 90 nm. The distance between ends of two symmetric angles is 260 nm.

Description

technical field [0001] The invention relates to a method for preparing nickel diselenide, in particular to a method for preparing nickel diselenide nano-stars with a hexagonal shape. The nickel diselenide nano-stars are prepared by a chemical solvothermal method. It belongs to the technical field of nanometer material preparation. Background technique [0002] In the past few decades, metal selenides have received extensive attention due to their excellent physical and chemical properties, and the structure and morphology of nanomaterials have a great influence on the performance and application of nanomaterials, so metal selenides The controlled synthesis of a series of nanomaterials has received more and more attention. Among them, nickel diselenide is an important semiconductor material, which has special electrical and magnetic properties. As a good electrical conductor and Pauli paramagnetic material, nickel diselenide is a weak paramagnetic material and its magnetic ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C01B19/04B82B3/00
Inventor 杜卫民钱雪峰
Owner SHANGHAI JIAO TONG UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products