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Method for preparing (Ga1-xZnx)(N1-xOx) nano fiber by electrostatic spinning method

An electrospinning method and nanofiber technology are applied in the field of nanofiber preparation to achieve the effects of small grain size, uniform diameter and narrow size distribution range.

Inactive Publication Date: 2015-07-08
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But so far, on the preparation of electrospinning (Ga 1-x Zn x )(N 1-x o x ) Nanofibers have not been reported yet

Method used

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  • Method for preparing (Ga1-xZnx)(N1-xOx) nano fiber by electrostatic spinning method
  • Method for preparing (Ga1-xZnx)(N1-xOx) nano fiber by electrostatic spinning method
  • Method for preparing (Ga1-xZnx)(N1-xOx) nano fiber by electrostatic spinning method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] (1) Weigh 0.5950g Zn(NO 3 ) 2 ·6H 2 O, 0.5115g Ga(NO 3 ) 3 ·xH 2 O and 1.1064g PVP (number-average molecular weight Mn=1300000) were added to 10mL ethanol-water mixed solution (ethanol:water=1:1), and magnetically stirred at 400 rpm at room temperature for 18h until Zn(NO 3 ) 2 ·6H 2 O, Ga(NO 3 ) 3 ·xH 2 O and PVP completely dissolved to form a homogeneous solution without bubbles, in which Zn 2+ : Ga 3+ =1:1 (molar ratio), inorganic salt: PVP = 1:1 (mass ratio), absolute ethanol: deionized water = 5:5 (volume ratio).

[0033] (2) Inject the solution into a plastic syringe, fix it on a microfluidic pump, use a metal mesh as a receiving plate, and obtain a zinc-gallium inorganic salt / PVP composite at a propulsion speed of 10 μL / min, an electrostatic field of 15 kV, and a receiving distance of 18 cm. Nanofibers.

[0034] (3) Spread the above-mentioned ZnGa inorganic salt / PVP composite nanofibers into a petri dish and place them in a muffle furnace. The tempe...

Embodiment 2

[0040] (1) Weigh 0.6319g Zn(CH 3 COO) 2 2H 2 O, 0.3681g Ga(NO 3 ) 3 ·xH 2 O and 1g PVP (number-average molecular weight Mn=1300000) were added to 10mL ethanol-water mixed solution (ethanol:water=4:1), and magnetically stirred at 400 rpm at room temperature for 18h until Zn(CH 3 COO) 2 2H 2 O, Ga(NO 3 ) 3 ·xH 2 O and PVP completely dissolved to form a homogeneous solution without bubbles, in which Zn 2+ : Ga 3+ =2:1 (molar ratio), inorganic salt: PVP = 1:1 (mass ratio), absolute ethanol: deionized water = 8:2 (volume ratio).

[0041] (2) Inject the solution into a plastic syringe, fix it on a microfluidic pump, use aluminum foil as a receiving plate, and obtain a zinc-gallium inorganic salt / PVP composite nanometer at a propulsion speed of 6 μL / min, an electrostatic field of 18 kV, and a receiving distance of 20 cm. fiber.

[0042] (3) Spread the above-mentioned ZnGa inorganic salt / PVP composite nanofibers into a petri dish and place them in a muffle furnace. The t...

Embodiment 3

[0046] (1) Weigh 0.5950g Zn(NO 3 ) 2 ·6H 2 O, 0.5115g Ga(NO 3 ) 3 ·xH 2 O and 1.1064g PVP (number-average molecular weight Mn=1300000) were added to 10mL ethanol-water mixed solution (ethanol:water=3:2), and magnetically stirred at 400 rpm at room temperature for 24h until Zn(NO 3 ) 2 ·6H 2 O, Ga(NO 3 ) 3 ·xH 2 O and PVP completely dissolved to form a homogeneous solution without bubbles, in which Zn 2+ : Ga 3+ =1:1 (molar ratio), inorganic salt: PVP = 1:1 (mass ratio), absolute ethanol: deionized water = 6:4 (volume ratio).

[0047] (2) Inject the solution into a plastic syringe, fix it on a microfluidic pump, use a metal mesh as a receiving plate, and obtain a zinc-gallium inorganic salt / PVP composite at a propulsion speed of 20 μL / min, an electrostatic field of 18 kV, and a receiving distance of 18 cm. Nanofibers.

[0048] (3) Spread the above-mentioned zinc-gallium inorganic salt / PVP composite nanofibers into a petri dish, place it in a muffle furnace, raise t...

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Abstract

The invention relates to a method for preparing a (Ga1-xZnx)(N1-xOx) nano fiber by an electrostatic spinning method. The method comprises the following steps of: (1) dispersing zinc salt, gallium salt and PVP (Polyvinyl Pyrrolidone) into a mixed solution of ethanol and water; violently agitating to completely dissolve the zinc salt, the gallium salt and the PVP to form uniform and transparent gel; (2) carrying out electrostatic spinning on the gel to obtain a zinc-gallium organic salt / PVP compound nano fiber; (3) calcining the zinc-gallium organic salt / PVP compound nano fiber and naturally cooling to a room temperature to obtain a zinc-gallium compound oxide nano fiber; and (4) placing the zinc-gallium compound oxide nano fiber into a flowing ammonia atmosphere to be nitrided. According to the method disclosed by the invention, the needed reaction temperature is low and the reaction time is greatly shortened; the diameter of the prepared (Ga1-xZnx)(N1-xOx) nano fiber is uniformly distributed, the size of a crystal grain is small and the specific surface area is high; water can be decomposed into hydrogen and oxygen under visible light irradiation.

Description

technical field [0001] The invention belongs to (Ga 1-x Zn x )(N 1-x o x ) field of preparation of nanofibers, in particular to an electrospinning method (Ga 1-x Zn x )(N 1-x o x ) method of nanofibers. Background technique [0002] (Ga 1-x Zn x )(N 1-x o x ) is a stable solid solution composed of ZnO and GaN. It has a narrow band gap of about 2.4-2.8eV. It has visible light absorption activity and adjustable absorption spectrum range. It is a new visible light catalytic semiconductor material in recent years. (Ga 1-x Zn x )(N 1-x o x )'s conduction band bottom is composed of Ga4s4p, and the valence band top is composed of N2p and Zn3d hybrid orbitals, and its performance can be adjusted by adjusting the ratio of Zn and Ga components. Moreover, its chemical properties are stable, and it has significant visible light catalytic water splitting hydrogen production activity after loading co-catalysts, which has an important prospect in realizing solar hydrogen pr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01F9/08D01D1/02D01D5/00D01D10/02D01F11/00
Inventor 张青红李雪冬王宏志李耀刚
Owner DONGHUA UNIV