What is so good about the toilet bowl of nanomaterials

When the size of particles is reduced to the nanometer level, it will lead to new properties of acoustic, optical, electrical, magnetic, and thermal properties. For example, the position of the absorption band boundary and the peak of the luminescence spectrum of the widely studied II-VI semiconductor cadmium sulfide will be significantly blueshifted as the grain size decreases.

According to this principle, cadmium sulfide with different energy gaps can be obtained by controlling the grain size, which will greatly enrich the research content of the material and is expected to obtain new applications. We know that the types of substances are limited, and that both micron and nano cadmium sulfide are composed of sulfur and cadmium elements, but by controlling the preparation conditions, materials with different band gaps and luminescence properties can be obtained. In other words, completely new materials have been obtained through nanotechnology.

Nanoparticles often have a large specific surface area, which can reach hundreds or even thousands of square meters per gram of this solid, which makes them suitable as highly active adsorbents and catalysts, and has important application prospects in the fields of hydrogen storage, organic synthesis and environmental protection. For nano-body materials, we can summarize them in six words: "lighter, taller, stronger". "Lighter" means that with the help of nanomaterials and technology, we can make devices that are smaller in size and have the same or even better performance, reducing the volume of the device and making it lighter.

The first computer required three rooms to store it, and it was with the help of semiconductor manufacturing technology in the micron range that it was miniaturized and computers popularized. The benefits of this "miniaturization" are staggering in terms of energy and resource utilization. "Higher" means that nanomaterials are expected to have higher optical, electrical, magnetic, and thermal properties.

"Stronger" means that nanomaterials have stronger mechanical properties (such as strength and toughness, etc.), and for nano-ceramics, nano-technology is expected to solve the brittleness problem of ceramics and may exhibit similar plasticity to materials such as metals.

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