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Preparation method for SnO2/ZnO compound micro-nano fibers and product thereof

A kind of micro-nano fiber, a certain amount of technology, applied in the direction of fiber chemical characteristics, rayon manufacturing, textile and paper making, etc., can solve the problems of one-dimensional continuous fiber easy to break, complex synthesis process, poor stability of surface heterojunction, etc., to achieve Steady improvement of physical and chemical properties, increased stability, improved composition and effects of pyrolysis and nucleation and growth of inorganic substances

Inactive Publication Date: 2017-09-08
UNIV OF JINAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above synthesis process is relatively complicated, and the one-dimensional continuous fiber is easy to break, and the stability of the surface heterojunction is poor.

Method used

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  • Preparation method for SnO2/ZnO compound micro-nano fibers and product thereof
  • Preparation method for SnO2/ZnO compound micro-nano fibers and product thereof
  • Preparation method for SnO2/ZnO compound micro-nano fibers and product thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] (1) Add 0.7419 g of zinc nitrate hexahydrate (Zn(NO 3 ) 2 ∙6H 2 O) and 0.8188 g of 2-methylimidazole were respectively dissolved in 50mL methanol solvent, stirred to obtain a transparent solution, mixed well and stirred for 1 h, after standing for 24 h, centrifuged and washed with methanol solvent for 3 times, placed in an evaporating dish Dry naturally to obtain Zif-8 product;

[0033] (2) Dissolve 0.0041 g of diammonium hydrogen citrate, 0.0082 g of octadecylamine, 0.0186 g of ethyl cellulose and 0.0068 g of Zif-8 in 2.0 mL of ethanol solvent, and stir to obtain a transparent solution;

[0034] (3) Add 0.3541 g of tin tetrachloride pentahydrate (SnCl 4 ∙5H 2 O) and 0.7000 g of PVP were added to a mixed solvent of 1.0 mL of ethanol and 4.0 mL of DMF, stirred to obtain a transparent solution, and then slowly added dropwise to the solution obtained in (2) at 0.2 mL / min, and stirred at room temperature for 10 h The precursor spinning solution is obtained, and the precursor fib...

Embodiment 2

[0038] (1) Add 0.7419 g of Zn(NO 3 ) 2 ∙6H 2 O and 0.7269 g of 2-methylimidazole were respectively dissolved in 46 mL of methanol solvent and stirred to obtain a transparent solution. After mixing, stir for 2 h. After standing for 24 h, after centrifugal washing with methanol solvent for 3 times, place it in an evaporating dish. Dry naturally to obtain Zif-8 product;

[0039] (2) Dissolve 0.0010 g of diammonium hydrogen citrate, 0.0014 g of octadecylamine, 0.0037 g of ethyl cellulose and 0.0014 g of Zif-8 in 2.0 mL of ethanol solvent, and stir to obtain a transparent solution;

[0040] (3) Add 0.3541 g of SnCl 4 ∙5H 2 O and 0.6200 g of PVP were added to a mixed solvent of 1.1 mL of ethanol and 4.4 mL of DMF, stirred to obtain a transparent solution, and then slowly added dropwise to the solution obtained in (2) at 0.3 mL / min, and stirred at room temperature for 10 h to obtain The precursor spinning solution, the precursor fiber is obtained by the electrospinning method, the spinnin...

Embodiment 3

[0043] (1) Add 0.7419 g of Zn(NO 3 ) 2 ∙6H 2 O and 0.9009 g of 2-methylimidazole were respectively dissolved in 48 mL of methanol solvent and stirred to obtain a transparent solution. After mixing evenly, stir for 1 h. After standing for 24 h, after centrifugal washing with methanol solvent for 3 times, place in an evaporating dish. Dry naturally to obtain Zif-8 product;

[0044] (2) Dissolve 0.0325 g of diammonium hydrogen citrate, 0.0594 g of octadecylamine, 0.1327 g of ethyl cellulose and 0.0431 g of Zif-8 in 2.0 mL of ethanol solvent, and stir to obtain a transparent solution;

[0045] (3) Add 0.3541 g of SnCl 4 ∙5H 2 O and 0.7700 g of PVP were added to the mixed solvent of 1.2 mL of ethanol and 4.8 mL of DMF, stirred to obtain a transparent solution, and then slowly added dropwise to the solution obtained in (2) at 0.2 mL / min, and stirred at room temperature for 8 h to obtain The precursor spinning solution, the precursor fiber is obtained by the electrospinning method, the sp...

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Abstract

The invention discloses a preparation method for SnO2 / ZnO compound micro-nano fibers. The preparation method comprises the following steps: firstly preparing Zif-8 by zinc salt and 2-methylimidazole; adding ammonium citrate dibasic, octadecylamine and ethyecellulose to prepare the Zif-8 solution; preparing tin salt solution by tin salt and polyvinylpyrrolidone, and slowly dropwise adding to the Zif-8 solution, to obtain precursor spinning solution, and executing the electrostatic spinning and heat treatment to obtain a final product. The body of the prepared SnO2 / ZnO compound micro-nano fibers is formed by SnO2 and ZnO nano-particle combination, and the surface has the SnO2 nano-particles. According to the preparation method, a zinc-based metal organic framework material is introduced into the SnO2 micro-nano fibers, the synthetic process is simple, the reaction parameters are easily set, and the ingredients of the obtained product are adjustable. The obtained SnO2 / ZnO compound micro-nano fibers have the important application value in the fields, such as air-sensitive and photocatalysis.

Description

Technical field [0001] The present invention relates to a SnO 2 / ZnO composite micro-nano fiber preparation method, specifically relates to a fiber surface with SnO 2 SnO with adjustable particle size 2 / ZnO composite micro-nano fiber preparation method. Background technique [0002] Gas sensors based on semiconductor oxides can quickly detect precursors and flammable gases. In recent years, they have received more and more attention in the fields of environmental governance and industrial safety. The synthesis of gas sensors with high sensitivity, strong stability and low detection limit is a key issue in this field at this stage. Studies have shown that semiconductor gas sensors with different microscopic morphological characteristics often exhibit unique physical and chemical properties. Therefore, using a suitable preparation process to obtain a micro-nano semiconductor gas sensor with controllable morphology and size, and adjustable composition has important application val...

Claims

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Application Information

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IPC IPC(8): D01F9/10D01F1/10
CPCD01F1/10D01F9/10
Inventor 马谦李绘陈迎韩智峰张进涛方圆谭亦朗李永涵杨萍
Owner UNIV OF JINAN
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