Method for assembling zinc oxide nano-chain by using DNA as template

Abstract

The invention discloses a method for assembling a zinc oxide nano-chain by using DNA as a template, comprising the following steps of: (1) mixing and stirring an aqueous solution of DNA, an aqueous solution of zinc nitrate and an aqueous solution of hexamethylenetetramine; (2) heating to 60 DEG C-80 DEG C and keeping the temperature for 0.5-4h; and (3) reducing the temperature to room temperature of 20 DEG C-25 DEG C and carrying out ultrasound treatment in an ultrasound wave dispersion instrument for 10-20 minutes and sampling to obtain the zinc oxide nano-chain by using the DNA as the template. The method is simple, easily obtains raw materials, consumes less energy and reduces the pollution to the environment; the equipment is less and the cost is low, so the method is suitable for batch production; the reaction time is short, the yield is high and no toxicity and harm exist, so that the method provides the possibility for preparing the zinc oxide nano-chain on a large scale; and zinc oxide nano-chains with different shapes can be constructed by operating the space structure of biological macromolecule DNA. The invention can simultaneously solve the problems of the control of the size and the shape of nanometer materials and the dispersion stability.

Description

technical field The invention relates to a preparation method of nanometer material, in particular to a preparation method of zinc oxide nano chain. Background technique With the improvement of people's requirements for environmental quality, the development of highly sensitive and specific response detection technology for environmental pollutants is of great significance to national health and economic development. Introducing nanomaterials into chemical sensors is a research hotspot in analytical chemistry. Among them, zinc oxide nanomaterials have received extensive attention because of their unique mechanical, electronic properties and chemical stability. There are many ways to prepare nanostructures, and the assembly of nanostructures with biological templates has the characteristics of high efficiency and low cost, so it has received great attention. DNA can adsorb ions or nanoparticles, and its shape can be designed according to needs, so it is one of the most com...

AI Technical Summary

Problems solved by technology

For example: the uniform precipitation method is used to prepare nano-zinc oxide, the process conditions are harsh, the equipment requirements are high, and the reaction time is long; the solution-gel method is high in cost and expensive; the microemulsion method is used, using a large number of organic compounds. It is easy to cause environmental pollution; the high temperature and high pressure synthesis equipment used in the hydrothermal method is expensive, the investment is large, and the operation requirements are high.

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