Preparation method of FeWO4 nanowire

A nanowire and SO4 technology, which is applied in the direction of nanotechnology, nanotechnology, chemical instruments and methods, etc., can solve the problems of expensive equipment and instruments, low utilization rate of raw materials, long preparation cycle, etc., and achieves convenient operation, good crystallization, and reduced preparation time. cost effect

Active Publication Date: 2013-02-13
XINING GONGJIN NEW MATERIAL TECHNOLOGY CO LTD
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  • Abstract
  • Description
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Problems solved by technology

Some of these methods have high requirements on equipment, and the equipment and instruments are relatively expensive; some have little utilization rate of raw materials; or the process is complicated, the preparation cycle is long, and the repeatability is poor.

Method used

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  • Preparation method of FeWO4 nanowire
  • Preparation method of FeWO4 nanowire

Examples

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Effect test

Embodiment 1

[0015] 1) Analytical pure ammonium ferrous sulfate [(NH 4 ) 2 Fe(SO 4 ) 2 ·6H 2 O] add in distilled water, and constantly stir, be mixed with the ferrous sulfate ammonia solution that concentration is 0.1mol / L, add chemically pure PVPK30 in the ferrous sulfate ammonia solution, make [Fe 2+ ]: PVPK30=1:0.9 molar ratio to obtain solution A;

[0016] 2) The analytically pure sodium tungstate [Na 2 WO 4 2H 2 O] Add in distilled water, and keep stirring to prepare a sodium tungstate solution with a concentration of 0.1mol / L, and add analytically pure dimethylformamide at the same time, so that the concentration of dimethylformamide is 5mmol / L to obtain a mixed solution B;

[0017] 3) Take solution A and solution B according to the volume ratio of 1:1, add solution B to solution A drop by drop, magnetically stir evenly, pour it into the hydrothermal reaction kettle, and control the filling degree at 60%; then seal the hydrothermal reaction kettle , control the hydrothermal ...

Embodiment 2

[0022] 1) Analytical pure ammonium ferrous sulfate [(NH 4 ) 2 Fe(SO 4 ) 2 ·6H 2 O] add in distilled water, and constantly stir, be mixed with the ferrous sulfate ammonia solution that concentration is 0.2mol / L, add chemically pure PVPK30 in the ferrous sulfate ammonia solution, make [Fe 2+ ]: PVPK30=1:1 molar ratio to get solution A;

[0023] 2) The analytically pure sodium tungstate [Na 2 WO 4 2H 2 O] Add in distilled water, and keep stirring to prepare a sodium tungstate solution with a concentration of 0.2mol / L, and add analytically pure dimethylformamide at the same time, so that the concentration of dimethylformamide is 6mmol / L to obtain a mixed solution B;

[0024] 3) Take solution A and solution B according to the volume ratio of 1:1, add solution B to solution A drop by drop, magnetically stir evenly, pour it into the hydrothermal reaction kettle, and control the filling degree at 70%; then seal the hydrothermal reaction kettle , control the hydrothermal tempe...

Embodiment 3

[0027] 1) Analytical pure ammonium ferrous sulfate [(NH 4 ) 2 Fe(SO 4 ) 2 ·6H 2 O] add in distilled water, and constantly stir, be mixed with the ferrous sulfate ammonia solution that concentration is 0.3mol / L, add chemically pure PVPK30 in the ferrous sulfate ammonia solution, make [Fe 2+ ]: PVPK30=1:1.2 molar ratio to obtain solution A;

[0028] 2) The analytically pure sodium tungstate [Na 2 WO 4 2H 2 O] Add in distilled water, and keep stirring to prepare a sodium tungstate solution with a concentration of 0.3mol / L, and add analytically pure dimethylformamide at the same time, so that the concentration of dimethylformamide is 7mmol / L to obtain a mixed solution B;

[0029] 3) Take solution A and solution B according to the volume ratio of 1:1, add solution B to solution A drop by drop, magnetically stir evenly, pour it into the hydrothermal reaction kettle, and control the filling degree at 65%; then seal the hydrothermal reaction kettle , control the hydrothermal ...

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Abstract

The invention provides a preparation method of FeWO4 nanowire. The method comprises the following steps: adding ammonium ferrous sulfate into distilled water to obtain ammonium ferrous sulfate solution; adding PVPK30 (polyvinyl pyrrolidone 30) into the ammonium ferrous sulfate solution to obtain a solution A; adding sodium tungstate and dimethyl formamide into distilled water to obtain a mixed solution B; dropwise adding the solution B into the solution A and pouring into a hydrothermal reaction kettle after uniform magnetic stirring, and the filling degree is controlled in the range of 60-80%; then sealing the hydrothermal reaction kettle, controlling the hydrothermal temperature at 160-190 DEG C, and reacting for 14-36 hours; naturally cooling to room temperature after finishing the reaction; filtering and collecting the product, and then washing the product with deionized water and anhydrous ethanol respectively; and drying at 40-80 DEG C to obtain the final product FeWO4 nanowire. The preparation method provided by the invention adopts a simple hydrothermal synthesis process to prepare FeWO4 nanowire by adding the template agent PVPK30. Not only is the preparation cost greatly reduced, but also the process is simple, the operation is convenient and the raw material is easy to get. The prepared FeWO4 nanowire has good crystallization and repeatability, with the diameter all about 10 nanometers and the length several hundred nanometers.

Description

technical field [0001] The present invention relates to a kind of FeWO 4 The preparation method, particularly relates to a kind of adopting hydrothermal method to prepare FeWO 4 nanowire method. Background technique [0002] FeWO 4 Microcrystals have high photocatalytic activity under ultraviolet and visible light conditions. At the same time, FeWO 4 The hexagonal lamella crystallites have weak ferromagnetic order at low temperature and possess magnetic and photocatalytic composite properties. FeWO 4 It has broad application prospects in photorotation, optical fiber, scintillator, humidity sensor, magnetic material, and photocatalyst, and has attracted great attention. [0003] Preparation of FeWO so far 4 There are many ways to synthesize microcrystals. Zuwei Song prepared cobalt tungstate microcrystals at 270°C by Low-temperature molten salt synthesis, and Bernadette A prepared tungstate by solution precipitation. Microcrystalline, Ye Gao used wet chemical process ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G49/00B82Y30/00
Inventor 曹丽云余芳黄剑锋费杰吴建鹏李翠艳卢靖
Owner XINING GONGJIN NEW MATERIAL TECHNOLOGY CO LTD
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