NiO-ZnO ball-chain-shaped nano-material and preparation method and application thereof

A nanomaterial, ni-zn technology, applied in the field of nanomaterials, can solve the problems of ball chain nanostructure materials that have not been reported, and achieve good photocatalytic effect, simple process and uniform size

Active Publication Date: 2019-04-19
ZHENGZHOU UNIV
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Problems solved by technology

[0005] At present, there have been a lot of related research on the preparation of one-dimensional nanomaterials, but most of them are ordinary linear nanostructures. There are few reports on the synthesis and preparation of ball chain nanostructures. Two different semiconductors, NiO and ZnO, are used There is no report on the ball-chain nanostructure materials that constitute the p-n heterojunction.

Method used

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  • NiO-ZnO ball-chain-shaped nano-material and preparation method and application thereof
  • NiO-ZnO ball-chain-shaped nano-material and preparation method and application thereof
  • NiO-ZnO ball-chain-shaped nano-material and preparation method and application thereof

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preparation example Construction

[0067] In a second aspect, in at least one embodiment, a method for preparing the above-mentioned NiO-ZnO ball chain nanomaterial is provided, comprising the following steps:

[0068] Mix the alcoholic solution of the nickel source, the alcoholic solution of the zinc source, and the alcoholic solution of the alkali metal hydroxide and then mix it with the reducing agent, then place the mixed solution in a parallel magnetic field, and carry out solid-liquid reaction after the heating reaction. Separation, the separated solid product is washed, dried and oxidized to obtain the nanometer material.

[0069] The above-mentioned "parallel magnetic field" refers to a magnetic field in which the lines of force are parallel straight lines, which can be realized by the following method: put two square magnets opposite each other, and the N pole of one magnet is facing the S pole of the other magnet.

[0070] The process of the above method is simple and efficient, and the nanometer mate...

Embodiment 1

[0107] A NiO-ZnO spherical chain nanomaterial, the nanomaterial is mainly formed by sequentially connecting NiO-ZnO spherical particles; the NiO-ZnO spherical particles are made of Ni-Zn as the core and NiO-ZnO as the shell Particles with a core-shell structure.

[0108] The above-mentioned nanomaterials are prepared by the following methods:

[0109] (a) Weigh 0.119g nickel chloride hexahydrate (NiCl 2 ·6H 2 O) and 0.0292g zinc chloride (ZnCl 2 ) was dissolved in 5mL of ethylene glycol (EG) to obtain a solution ①;

[0110] Wherein, the concentration of nickel source is 0.1mol / L, and the concentration of zinc source is 0.0428mol / L;

[0111] (b) Weigh 1.2g of sodium hydroxide (NaOH) and dissolve it in 25mL of ethylene glycol (EG) to obtain a solution ②;

[0112] Wherein, the concentration of sodium hydroxide is 1.2mol / L;

[0113] (c) Ultrasonic treatment of solution ① and solution ② respectively, and stirring for 30 minutes until completely dissolved;

[0114] (d) After ...

Embodiment 2

[0123] A NiO-ZnO ball chain nanomaterial, different from Example 1, in step (a) of the preparation method of the nanomaterial in this example: the concentration of the nickel source is 0.15mol / L, and the concentration of the zinc source is 0.02mol / L, the nickel source is nickel sulfate, and the zinc source is zinc sulfate. All the other are identical with embodiment 1.

[0124] It is found by SEM observation that the nanomaterial is in the shape of a ball chain, with a diameter of about 500 nm and a length of about 30 μm.

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Abstract

The invention relates to the field of nano-materials, and particularly provides a NiO-ZnO ball-chain-shaped nano-material and a preparation method and application thereof. The NiO-ZnO ball-chain-shaped nano-material is mainly formed by sequentially connecting NiO-ZnO spherical particles. The NiO-ZnO spherical particles are of core-shell structures with Ni-Zn as cores and NiO-ZnO as shells. The material has a p-n heterogeneous structure, is in a ball chain shape, and has the excellent photocatalysis property, photo-electric property, pressure-sensitive property and gas-sensitive property whichcannot be reached by NiO semiconductors or ZnO semiconductors.

Description

technical field [0001] The invention relates to the field of nanomaterials, in particular to a NiO-ZnO spherical chain nanomaterial and its preparation method and application. Background technique [0002] NiO is a typical p-type semiconductor with good heat-sensing and gas-sensing properties. It is a promising functional material and is widely used in metallurgy, chemistry and electronics industries. The ultra-fine particle size of nano-nickel oxide changes its surface structure and crystal structure, resulting in surface effects, small size effects, quantum size effects and macroscopic quantum tunneling effects, etc., thus showing excellent catalytic performance and electrical performance. . [0003] ZnO is a typical third-generation semiconductor material, which has a band gap of 3.37eV and an exciton binding energy of 60meV. Its room temperature luminescence performance is widely used in liquid crystal displays, thin film transistors, light emitting diodes and other pr...

Claims

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Application Information

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IPC IPC(8): B01J23/78B01J35/02C02F1/30C02F101/30
CPCC02F1/30B01J23/78C02F2101/308B01J35/39B01J35/00B01J35/30
Inventor 郭海中李顺方董子斌罗毅相文峰
Owner ZHENGZHOU UNIV
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