Method for preparing tin dioxide nanostructure material with floriform appearance by hydrothermal synthesis

A technology of tin dioxide and hydrothermal synthesis, applied in nanostructure manufacturing, tin oxide, nanotechnology, etc., can solve problems such as high reaction temperature, complicated reaction conditions, and long reaction time, and achieve high product purity and simple raw materials , the effect of simple preparation method
CN101693552AInactive Publication Date: 2010-04-14ZHEJIANG UNIV
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
ZHEJIANG UNIV
Publication Date
2010-04-14
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a method for preparing a tin dioxide nanostructure material with a floriform appearance by hydrothermal synthesis, which comprises the following steps: adding tin dichloride powder to a mixed solvent of ethanol and water to prepare a solution reaction system containing tin ions; then adding an ammonia-water solution with the mass concentration of 25%-28% to the solution reaction system and stirring evenly to obtain a reaction precursor; and heating the precursor in a polytetrafluoroethylene reaction kettle by a hydrothermal method, and changing the heating temperature and time of a muffle to obtain the tin dioxide nano-materials with different appearances. The invention can lower the reaction cost and improve the production efficiency of the tin dioxide nano-material, and the prepared nano-material has the advantages of controllable appearances, high purity, good performance, large specific area, good repeatability, and the like and greatly improves the performance of a battery when used as a cathode material of a lithium-ion battery.
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Description

technical field

[0001] The invention relates to a method for preparing nanomaterials, in particular to a method for hydrothermally synthesizing tin dioxide nanostructure materials with flower-like morphology. Background technique

[0002] Nanomaterials and nanostructures are the most dynamic research objects in the field of new materials research today, and have a very important impact on future economic and social development. They are also the most active and important components of nanotechnology that are closest to applications. When the size of nanoparticles decreases to a certain value, the electronic energy level near the Fermi surface of metal particles changes from quasi-continuous to discrete energy levels; and there are discontinuous highest occupied molecular orbital energy levels and lowest unoccupied energy levels in nano-semiconductor particles. The phenomenon of molecular orbital energy level, which makes the energy gap widen, is called the quantum size effec...

Claims

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