Electrostatic spinning synthesis method of In2O3 core-shell nanobelt structure

A technology of electrospinning and synthesis method is applied in the field of electrospinning synthesis of In2O3 core-shell nanobelt structure to achieve the effect of improving gas-sensing properties and improving viscosity

Active Publication Date: 2020-04-07
UNIV OF JINAN +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Electrospinning is a common method for preparing one-dimensional structures, but there are few reports on the one-step synthesis of core-shell structures by electrospinning

Method used

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  • Electrostatic spinning synthesis method of In2O3 core-shell nanobelt structure
  • Electrostatic spinning synthesis method of In2O3 core-shell nanobelt structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] 1.1 First, configure a mixed solvent of 1.0 mL of ethanol, 4.0 mL of DMF and 0.01 mL of ethylene glycol methyl ether, and mix 0.6016 g of indium nitrate hydrate (InN 3 o9 . wxya 2 O), 0.0014 g of 1,3,5-benzenetricarboxylic acid, 0.0010 g of hydroxylamine hydrochloride and 0.0010 g of acrylamide were added in sequence, and stirred evenly;

[0025] 1.2 Add 0.7 g of PVP to obtain a homogeneous precursor spinning solution;

[0026] 1.3 The above spinning solution was electrospun to obtain the precursor fiber. The spinning parameters were: positive voltage 18 KV, negative voltage 0.5 KV, receiving distance 18 cm, and syringe advancing speed 0.002 mm / s;

[0027] 1.4 Fold the precursor fiber and lay it flat in the ark, then raise the temperature from room temperature to 600 °C at a rate of 5 °C / min, keep it warm for 2 h, and the sample is cooled with the furnace to obtain In 2 o 3 Core-shell nanoribbon structure.

[0028] The XRD result of the product is as follows figur...

Embodiment 2

[0030] 2.1 First, configure a mixed solvent of 1.5 mL of ethanol, 3.5 mL of DMF and 0.015 mL of ethylene glycol methyl ether, and mix 0.6317 g of InN 3 o 9 . wxya 2 O, 0.0012 g of 1,3,5-benzenetricarboxylic acid, 0.0010 g of hydroxylamine hydrochloride and 0.0017 g of acrylamide were added successively and stirred evenly;

[0031] 2.2 Add 0.7 g of PVP to obtain a homogeneous precursor spinning solution;

[0032] 2.3 The above spinning solution was electrospun to obtain precursor fibers. The spinning parameters were as follows: positive voltage 17 KV, negative voltage 0.5 KV, receiving distance 20 cm, and syringe advancing speed 0.001 mm / s;

[0033] 2.4 Fold the precursor fiber and lay it flat in the ark, then raise the temperature from room temperature to 550 °C at a rate of 4 °C / min, keep it warm for 1.5 h, and the sample is cooled with the furnace to obtain In 2 o 3 Core-shell nanoribbon structure. In 2 o 3 The diameter of the core-shell nanoribbon structure is 400-5...

Embodiment 3

[0035] 3.1 First, configure a mixed solvent of 1.8 mL of ethanol, 4.3 mL of DMF and 0.02 mL of ethylene glycol methyl ether, and mix 0.5414 g of InN 3 o 9 . wxya 2 O, 0.0015 g of 1,3,5-benzenetricarboxylic acid, 0.0011 g of hydroxylamine hydrochloride and 0.0017 g of acrylamide were added successively and stirred evenly;

[0036] 3.2 Add 0.7037 g of PVP to obtain a homogeneous precursor spinning solution;

[0037] 3.3 The above spinning solution was electrospun to obtain the precursor fiber. The spinning parameters were as follows: positive voltage 18 KV, negative voltage 0.5 KV, receiving distance 19 cm, and syringe advancing speed 0.003 mm / s;

[0038] 3.4 Fold the precursor fiber and lay it flat in the ark, then raise the temperature from room temperature to 600°C at a rate of 5°C / min, and keep it warm for 2 hours. After the sample is cooled with the furnace, In 2 o 3 Core-shell nanoribbon structure. In 2 o 3 The diameter of the core-shell nanoribbon structure is 450...

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Abstract

The invention discloses an electrostatic spinning synthesis method of an In2O3 core-shell nanobelt structure, which comprises the following steps: sequentially adding a trivalent indium salt, 1, 3, 5-benzene tricarbonic acid, hydroxylamine hydrochloride and acrylamide into a mixed solution of ethanol, N, N-dimethylformamide and ethylene glycol monomethyl ether, and uniformly stirring; adding polyvinylpyrrolidone into an obtained solution to obtain a precursor spinning solution with uniform components, and precursor fibers are prepared through an electrostatic spinning method; and carrying outhigh-temperature calcination on the prepared precursor fiber in a muffle furnace to obtain the product. By designing a precursor spinning solution reaction system, regulating spinning parameters and regulating a calcining system, the In2O3 core-shell nanobelt structure with uniform size, controllable morphology and adjustable shell thickness. The preparation process is simple and easy to regulateand control, the selected raw materials are wide in source and low in price, and the product is uniform in microstructure and good in repeatability and has wide application prospects in the fields ofgas sensitive sensing, catalysis and the like.

Description

technical field [0001] The present invention relates to an In 2 o 3 A method for preparing a core-shell nanoribbon structure, specifically relating to an Indium with adjustable diameter and controllable shell thickness 2 o 3 Electrospinning synthesis method of core-shell nanoribbon structure. Background technique [0002] In recent years, one-dimensional (1D) nanostructures have attracted widespread attention in gas detection applications due to their large specific surface area and large aspect ratio. One-dimensional In 2 o 3 Compared with other multi-dimensional structures and zero-dimensional structures, nanomaterials have smaller agglomeration, orientation characteristics along a certain direction and rapid electron transfer ability, which greatly improve the conductivity of the material. In the fields of photocatalyst, gas sensor and lithium ion battery method, In 2 o 3 has important applications. In 2 o 3 It is very sensitive to the external environment, whi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G15/00D01F6/56D01F1/10B82Y30/00B82Y40/00
CPCC01G15/00D01F6/56D01F1/10B82Y30/00B82Y40/00C01P2004/17C01P2004/62C01P2004/64C01P2004/03C01P2002/72
Inventor 褚姝姝刘裕李绘刘明乐李行郭嘉马谦
Owner UNIV OF JINAN
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