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a butterfly shaped sno 2 Two-dimensional nanomaterials and their preparation methods and applications

A two-dimensional nanomaterial and nanomaterial technology, which are applied in the field of butterfly-shaped SnO2 two-dimensional nanomaterials and their preparation, can solve the problems of surface activity of nanofilms, sensitivity to surface adsorption gas, limited redox properties, and hinder the application of two-dimensional nanomaterials. , the environment is not very good, etc., to achieve the effect of rapid response and recovery characteristics, excellent selectivity, and easy scale

Active Publication Date: 2020-09-15
YUNNAN UNIV
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Problems solved by technology

In hydrothermal synthesis, strong acids or strong bases, such as sodium hydroxide, potassium hydroxide and hydrochloric acid, are mostly the basic conditions of the method, and most of them need toxic and harmful organic solvents that are not very good for the environment; more important Interestingly, the two-dimensional SnO prepared by hydrothermal 2 The limited surface activity, surface adsorption, gas sensitivity, and redox characteristics of nanosheets and nanofilms hinder the development of SnO 2 Applications of 2D Nanomaterials

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  • a butterfly shaped sno <sub>2</sub> Two-dimensional nanomaterials and their preparation methods and applications

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[0032] The present invention will be further described below in conjunction with the embodiments and accompanying drawings, but the present invention is not limited in any way. Any transformation or replacement based on the teaching of the present invention belongs to the protection scope of the present invention.

[0033] Butterfly-shaped SnO according to the present invention 2 Two-dimensional nanomaterials are based on SnSO 4 and SDBS as raw materials prepared by hydrothermal reaction, the butterfly-shaped SnO 2 Two-dimensional nanomaterials have two-dimensional butterfly shape and rich surface defect structure, and have gas adsorption, surface activity, redox and gas sensitivity properties.

[0034] Butterfly-shaped SnO according to the present invention 2 The preparation method of two-dimensional nanomaterials, including precursor solution preparation, main reaction, precursor separation, nanomaterial preparation steps, specifically includes:

[0035] A. Preparation of...

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Abstract

The invention discloses a butterfly-shaped SnO2 two-dimensional nanometer material, and a preparation method and an application thereof. The butterfly-shaped SnO2 two-dimensional nanometer material isprepared by using SnSO4 and SDBS as raw materials through a two-step combined method of a hydrothermal reaction and high-temperature oxidizing annealing. The butterfly-shaped SnO2 two-dimensional nanometer material has a two-dimensional butterfly shape and a structure rich in surface defects, and has the characteristics of gas adsorption, surface activity, oxidation reduction and gas sensitivity.The preparation method comprises the following steps: preparation of a precursor solution, a main reaction, separation of a precursor, and preparation of a nanometer material through high-temperatureoxidizing heat treatment. The application comprises the application of the butterfly-shaped SnO2 two-dimensional nanometer material in preparation of gas sensors. Directed at the problems of complicated preparation procedures, high cost, incapability of realizing large-scale preparation and addition of environmentally-unfriendly, toxic and harmful organic solvents like strong acid and strong alkali in conventional preparation of the two-dimensional SnO2 nanometer material, the invention provides a simple, economical, green and easily-scaled synthetic method.

Description

technical field [0001] The invention belongs to the field of material technology, in particular to a butterfly-shaped SnO 2 Two-dimensional nanomaterials and their preparation methods and applications. Background technique [0002] Since Novoselov K S and Geim A K successfully used adhesive tape to exfoliate graphene flakes from highly oriented pyrolytic graphite in 2004, the preparation and application of various two-dimensional inorganic nanomaterials have entered a period of rapid development. Due to the reduction of material dimensions and the reduction of structural feature size, two-dimensional nanomaterials such as nanosheets and nanofilms have significant surface effects and interface effects, small size effects, macroscopic quantum tunneling effects, and dielectric confinement effects. It presents novel and unique physical, electronic, chemical, and optical properties different from traditional materials, so it has broad application prospects in optoelectronic devi...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01G19/02B82Y30/00B82Y40/00
CPCB82Y30/00B82Y40/00C01G19/02C01P2004/20C01P2004/61C01P2004/64
Inventor 赵鹤云万文静
Owner YUNNAN UNIV
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