Method for producing nanometer silicon by adopting rice hull

Abstract

The invention relates to a method for producing nanometer silicone by adopting rice hull. The method for producing the nanometer silicone by adopting the rice hull comprises the following steps: carrying out heat treatment on the rice hull, so that silicon dioxide is obtained; carrying out reduction reaction on the silicon dioxide and magnesium, so that an intermediate containing the nanometer silicone, magnesium silicide, silicon dioxide and magnesium oxide is obtained; treating the intermediate with hydrochloric acid, separating filtrate containing magnesium silicate and magnesium oxide, and treating with hydrofluoric acid, filtering to remove filtrate containing silicon dioxide; rinsing products of the previous step to be neutral, and drying, so that the nanometer silicone is obtained. By applying the method for producing the nanometer silicone by adopting the rice hull, the nanometer silicone can be produced by adopting the rice hull, the rice hull can be changed into things of value, pollution to the environment when the rice hull is incinerated is reduced, production cost of the nanometer silicone is reduced, and considerable social benefit and economic benefit can be obtained; the obtained nanometer silicon material has porous structures and strong physical properties and can be applied to the fields of medicines, electronics and environmental protection.

Description

[technical field] [0001] The invention relates to a process for producing nano-silicon, in particular to a method for producing nano-silicon with rice husks. [Background technique] [0002] China is a big rice-producing country. At present, the annual rice output is about 200 million tons, and the estimated rice husks are about 50 million tons. Rice belongs to Gramineae. Its epidermis is hard and contains siliceous cells. The siliceous cells are often filled with individual siliceous bodies and are rich in silicon. About 10% of the ordinary rice husks are used as feed, about 20% of them are recycled and used as low-grade industrial auxiliary materials, 70% of them are used as fertilizers after burning, and the rest are used for other purposes. In some large rice-producing areas in China, the smog produced by the burned rice husks every year pollutes the atmosphere and poses a challenge to the control of smog. [0003] At the same time, as a new generation of optoelectronic...

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Problems solved by technology

[0004] One of the purposes of the present invention is to solve the defect that the silicon element in the rice husk is mostly wasted in the prior art, and turn the rice husk

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