Electrostatic spinning synthesis method for In2O3 octahedron

A technique of electrospinning and octahedron is applied in the field of preparation of In2O3 octahedron to achieve the effects of uniform and special morphology, large output and easy operation.

Inactive Publication Date: 2018-04-27
UNIV OF JINAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Up to now, no preparation of In by electrospinning technology has been found at home and abroad. 2 o 3 Related news about octahedron

Method used

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  • Electrostatic spinning synthesis method for In2O3 octahedron
  • Electrostatic spinning synthesis method for In2O3 octahedron
  • Electrostatic spinning synthesis method for In2O3 octahedron

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] 1.1 Dissolve 0.1729 g of sucrose and 0.0758 g of tartaric acid in 4 mL of DMF, then add 1 mL of ethanol, 0.5642 g of indium chloride (InCl 3 ), 0.8000 g of PVP to form a mixed solution, and stirred until transparent to obtain a precursor spinning solution.

[0029] 1.2 The precursor fiber was obtained by electrospinning the precursor spinning solution. The spinning parameters were: positive voltage 18KV, negative voltage 0.5 KV, receiving distance 18 cm, and syringe advancing speed 0.002 mm / s.

[0030] 1.3 Place the precursor fiber in a muffle furnace, raise the temperature from room temperature to 600 °C at a rate of 5 °C / min in an air atmosphere, keep it warm for 2 h, and obtain the product after the sample is cooled with the furnace.

[0031] The XRD result of the product is as follows figure 1 As shown, it can be seen from the figure that all the diffraction peaks are consistent with the standard XRD card (06-0416), proving that the obtained product is cubic ferrom...

Embodiment 2

[0033] 2.1 Dissolve 0.0609 g of sucrose and 0.0679 g of tartaric acid in 4 mL of DMF, then add 1 mL of ethanol, 0.3611 g of InCl 3 , 0.4085 g of PVP to form a mixed solution, stirred until transparent to obtain a precursor spinning solution.

[0034] 2.2 The precursor fiber was obtained by electrospinning the precursor spinning solution. The spinning parameters were: positive voltage 17KV, negative voltage 0.5 KV, receiving distance 19 cm, and syringe advancing speed 0.001 mm / s.

[0035] 2.3 Place the precursor fiber in a muffle furnace, raise the temperature from room temperature to 700 °C at a rate of 8 °C / min in an air atmosphere, and keep it for 8 h. After the sample is cooled with the furnace, In 2 o 3 Octahedral structure, the octahedral edge length is 10.3-12.4 μm.

Embodiment 3

[0037] 3.1 Dissolve 0.2759 g of sucrose and 0.0518 g of tartaric acid in 4 mL of DMF, then add 1 mL of ethanol, 0.6432 g of InCl 3 , 1.2021 g of PVP to form a mixed solution, stirred until transparent to obtain a precursor spinning solution.

[0038] 3.2 The precursor fiber was obtained by electrospinning the precursor spinning solution. The spinning parameters were: positive voltage 19KV, negative voltage 0.5 KV, receiving distance 16 cm, and syringe advancing speed 0.001 mm / s.

[0039] 3.3 Place the precursor fiber in a muffle furnace, and raise the temperature from room temperature to 500 °C at a rate of 6 °C / min in an air atmosphere, and keep it warm for 3 h. After the sample is cooled with the furnace, In 2 o 3 Octahedral structure, the octahedral edge length is 0.5-1.2 μm.

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Abstract

The invention discloses an electrostatic spinning synthesis method for an In2O3 octahedron. The electrostatic spinning synthesis method for the In2O3 octahedron comprises the following steps: mixing saccharose, tartaric acid and dimethylformamide, then adding ethanol, soluble indium salts and polyvinylpyrrolidone in an obtained mixture, and stirring until the mixture is transparent to obtain a precursor spinning solution; and carrying out electrostatic spinning on the precursor spinning solution to obtain precursor fibers, and then carrying out heat treatment on the obtained precursor fibers to obtain the In2O3 octahedron. By an electrostatic spinning technology, a size-adjustable cubic bixbyite type In2O3 octahedron structure is synthesized. The electrostatic spinning synthesis method forthe In2O3 octahedron has the advantages of wide raw material sources, low price, easiness in regulation and control of spinning parameters, good product morphology repeatability, narrow particle sizedistribution range and the like, and thus, the electrostatic spinning synthesis method for the In2O3 octahedron has potential application value in the field of air sensitivity.

Description

technical field [0001] The present invention relates to an In 2 o 3 Preparation method of octahedron, specifically related to a size-tunable ferromanganese ore-type In 2 o 3 Electrospinning synthesis of octahedra. Background technique [0002] Gas sensors with semiconductors as the core material can be converted into electrical signals that can be output according to certain rules according to the concentration or content of the measured gas, and thus have been widely used in environmental monitoring, food safety, chemical technology and other fields. Due to the advantages of large specific surface area, high activity, sensitive to environmental response, high gas sensitivity, and fast response and recovery speed, metal oxide micro-nano materials have become a research hotspot in the gas sensor industry in recent years. [0003] Cubic ferromanganese type In 2 o 3 It is a typical n-type semiconducting metal oxide, which can detect ethanol, acetone, formaldehyde, H 2 S ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G15/00
CPCC01G15/00C01P2002/30C01P2002/72C01P2004/03C01P2004/41C01P2004/61
Inventor 李绘陈迎马谦张进涛韩智峰方圆王思嘉杨萍
Owner UNIV OF JINAN
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