Gold@zinc oxide core-shell heterogeneous nanoparticles having strong sunlight absorption property, and preparation method thereof

A gold zinc oxide and nanoparticle technology, which is applied in the field of gold zinc oxide (AuZnO) core-shell heterogeneous nanoparticles and its preparation, can solve the problems of low absorption efficiency, insufficient preparation technology of core-shell heterogeneous composite nanoparticles, electron-space Holes are easy to recombine and other problems, achieving the effect of uniform particle size, good photocatalytic degradation characteristics, and simple and easy-to-operate process
CN105478117AInactive Publication Date: 2016-04-13UNIV OF JINAN
4 Cites 13 Cited by

Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
UNIV OF JINAN
Publication Date
2016-04-13
Estimated Expiration
Not applicable · inactive patent

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The present invention relates to gold@zinc oxide core-shell heterogeneous nanoparticles having strong sunlight absorption property, and a preparation method thereof, wherein the core of the nanoparticle is octahedral gold nanoparticles, the shell layer component is polycrystalline zinc oxide nanoparticles, and the structure parameters of the scale, the zinc oxide shell layer thickness, the gold core size and the like can be effectively regulated respectively within 30-160 nm, 10-30 nm and 50-200 nm. The preparation steps comprise: sequentially adding a proper amount of deionized water, sodium borohydride, zinc nitrate and a sodium hydroxide aqueous solution to a pre-prepared octahedral gold nanoparticle colloid solution, carrying out a reaction for 5-100 min at a temperature of 0-100 DEG C, and centrifugating at a rotation speed of 3000-14500 rotation / min to obtain the gold@zinc oxide nanoparticles. According to the present invention, the gold@zinc oxide nanoparticles have important application valus in the fields of photocatalysis, pollutant degradation, environmental governance, and the like.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to a gold zinc oxide (AuZnO) core-shell heterogeneous nanoparticle with strong solar light absorption performance and a preparation method thereof. Background technique

[0002] As a photocatalyst with excellent performance, zinc oxide (ZnO) nanomaterials have very broad application prospects and potentials in photocatalytic degradation, environmental governance and protection. However, there are two urgent problems to be solved in the actual photocatalytic application of single-component zinc oxide (ZnO) nanomaterials: first, the absorption of light by zinc oxide (ZnO) nanoparticles is mainly concentrated in a small section of the ultraviolet region, and The absorption intensity is weak, resulting in a low utilization rate of sunlight; secondly, the photogenerated electrons and holes of zinc oxide (ZnO) nanoparticles are easy to recombine in the photocatalytic reaction, making the catalytic reaction efficiency low, which greatly ...

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