With the continuous development of science and technology, nano gold powder has been widely used as a new type of material in various fields. This article will focus on the shape, purity, and color of nano gold powder, and explore its unique value in the field of technology.
1、 The Shape Diversity of Nano Gold Powder
1. Spherical nano gold powder
Spherical nano gold powderIt is currently the most common form on the market, with particle sizes mainly distributed in the 20nm, 50nm, 100nm, 200nm, and 500nm levels. This shaped nano gold powder has a high specific surface area and dispersibility, making it exhibit excellent performance in fields such as catalysts and sensors.
2. Micro scale nano gold powder
Compared with spherical nano gold powder, micron sized nano gold powder has a larger particle size, mainly distributed in 1 μ m and 5 μ m. Due to its larger particle size, micrometer sized gold nanoparticles are more suitable in certain fields, such as electronic fillers and conductive pastes.
2、 Purity and influencing factors of nano gold powder
1. Purity level
The purity of nano gold powder varies in different grades, with common grades being 99.9%, 99.99%, and 99.999%. The improvement of purity usually means a reduction in impurity content, thereby making the performance of nano gold powder more superior in fields such as catalysis and biosensors.
2. Preparation method
The preparation method of nano gold powder directly affects its purity. Generally speaking, nano gold powder prepared by physical method has higher purity, while nano gold powder prepared by chemical method has certain impurities present. Therefore, when applying nano gold powder, it is necessary to choose the appropriate preparation method according to the specific scenario.
3、 The relationship between color and particle size of nano gold powder
1. Dark brown nano gold powder
Most of the nano gold powders appear dark brown due to surface plasmon resonance. However, the color of nano gold powder also varies at different particle sizes, especially the black nano gold powder at 20 nanometers, which has a darker color.
From the above discussion, it can be seen that,
Nano gold powderAs an emerging material, it has diverse shapes, different purity levels, and colors. Due to its unique properties, nano gold powder has shown unique application value in fields such as catalysis, biosensors, and electronic fillers. However, the application of nano gold powder also faces some challenges, such as the selection of preparation methods and large-scale production, which require joint efforts from researchers and engineers in related fields to solve.
In the future, with the in-depth research and application of nanotechnology, nano gold powder is expected to demonstrate its enormous potential in more fields and make greater contributions to the development of human society.
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