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Method for preparing mono-crystalline Fe2O3 nanoparticle self-assembled piranha-shaped nano-structure

A nanoparticle and nanostructure technology, which is applied in the field of preparing single-crystal Fe2O3 nanoparticle self-assembled piranha-like nanostructures, achieving the effects of strong controllability, simple process route and high yield

Active Publication Date: 2019-02-05
JINGDEZHEN CERAMIC INSTITUTE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

So far, the solvothermal preparation of single crystal Fe under the condition of no template or surfactant 2 o 3 "Piranha" nanostructure has not been reported

Method used

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  • Method for preparing mono-crystalline Fe2O3 nanoparticle self-assembled piranha-shaped nano-structure
  • Method for preparing mono-crystalline Fe2O3 nanoparticle self-assembled piranha-shaped nano-structure
  • Method for preparing mono-crystalline Fe2O3 nanoparticle self-assembled piranha-shaped nano-structure

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Effect test

Embodiment 1

[0020] A preparation of single crystal Fe 2 o 3 A method for self-assembling piranha-like nanostructures of nanoparticles, comprising the steps of:

[0021] Step 1: Dissolve ferric chloride hexahydrate in distilled water, then add 3M NaOH solution dropwise to obtain a brownish-red suspension, stir for 15 minutes, then place the suspension in a hydrothermal kettle, keep it warm at 80°C for 5 minutes, and then The hydrothermal reaction product was washed three times with distilled water and ethanol respectively, and Fe was obtained after filtration. 2 o 3 Nanoparticle precursors;

[0022] Step 2: Fe 2 o 3 The nanoparticle precursor is mixed with distilled water and ethanol, and stirred until uniformly to obtain liquid A; the Fe 2 o 3 The molar ratio of nanoparticle precursor: distilled water: ethanol is 1:100:10;

[0023] Step 3: Add 12ml 3M KOH dropwise into liquid A, stir for 5 minutes, put it in a hydrothermal kettle, keep it warm at 220°C for 20 hours, wash the hydro...

Embodiment 2

[0026] A preparation of single crystal Fe 2 o 3 A method for self-assembling piranha-like nanostructures of nanoparticles, comprising the steps of:

[0027] Step 1: Dissolve ferric nitrate nonahydrate in distilled water, then add 3M NaOH solution dropwise to obtain a brownish-red suspension, stir for 15 minutes, then put the suspension in a hydrothermal kettle, keep it at 100°C for 1 minute, and then use distilled water Wash the hydrothermal reaction product with ethanol for 3 times, and obtain Fe after filtration 2 o 3 Nanoparticle precursors;

[0028] Step 2: Fe 2 o 3 The nanoparticle precursor is mixed with distilled water and ethanol, and stirred until uniformly to obtain liquid A; the Fe 2 o 3 Nanoparticle precursor: distilled water: n-octanol molar ratio is 1:400:10;

[0029] Step 3: Add 12ml of 3MKOH dropwise into liquid A, stir for 10 minutes, put it in a hydrothermal kettle, keep it warm at 240°C for 18 hours, wash the hydrothermal reaction product with distil...

Embodiment 3

[0031] A preparation of single crystal Fe 2 o 3 A method for self-assembling piranha-like nanostructures of nanoparticles, comprising the steps of:

[0032] Step 1: Dissolve anhydrous ferric chloride in distilled water, then add 3M NaOH solution dropwise to obtain a brownish-red suspension, stir for 15 minutes, then place the suspension in a hydrothermal kettle, keep it warm at 90°C for 3 minutes, and then use The hydrothermal reaction product was washed three times with distilled water and ethanol, and Fe was obtained after filtration. 2 o 3 Nanoparticle precursors;

[0033] Step 2: Fe 2 o 3 The nanoparticle precursor is mixed with distilled water and ethanol, and stirred until uniformly to obtain liquid A; the Fe 2 o 3 The molar ratio of nanoparticle precursor: distilled water: butanol is 1:200:10;

[0034] Step 3: Add 12ml of 3MKOH dropwise into liquid A, stir for 8 minutes, put it in a hydrothermal kettle, keep it warm at 200°C for 24 hours, wash the hydrothermal rea...

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Abstract

The invention discloses a method for preparing a mono-crystalline Fe2O3 nanoparticle self-assembled piranha-shaped nano-structure. The method comprises the following steps: firstly, dissolving an ironcompound into distilled water; then dropwise adding a NaOH solution to obtain a brown red suspension solution, and then stirring for 15min; then adding into a hydrothermal kettle and reacting; washing a hydrothermal reaction product for 3 times through the distilled water and ethanol respectively; then filtering to obtain a precursor; secondly, mixing the precursor with the distilled water and anorganic solvent; uniformly stirring to obtain a solution A; finally, dropwise adding KOH into the solution A; after stirring, putting into the hydrothermal kettle and reacting; then washing the product for 3 to 6 times through the distilled water and the ethanol respectively; filtering and drying to obtain the mono-crystalline Fe2O3 nanoparticle self-assembled piranha-shaped nano-structure. The method disclosed by the invention is high in yield and strong in controllability, and large-scale production is easy to realize; the mono-crystalline Fe2O3 nanoparticle self-assembled piranha-shaped nano-structure has excellent photocatalytic properties under visible light so that the nano-structure has a wide application prospect.

Description

technical field [0001] The invention belongs to the field of novel inorganic materials, in particular to a method for preparing single crystal Fe 2 o 3 A method for nanoparticle self-assembly of piranha-like nanostructures. Background technique [0002] With the continuous development of industry, the discharge of industrial wastewater containing toxic chemicals, dyes and other harmful substances has also increased significantly, which not only pollutes the environment, especially water, and thus also poses a serious threat to the ecosystem. Therefore, it is urgent to find an effective method to solve the water pollution problem. Among various technologies, photocatalytic degradation of organic pollutants in wastewater is considered to be one of the most effective wastewater treatment technologies due to its simple operation and complete degradation. However, TiO 2, Photocatalysts such as ZnO show limited performance due to their wide bandgap energy and low utilization ...

Claims

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Application Information

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IPC IPC(8): C30B29/16C30B29/60C30B7/10B82Y30/00B82Y40/00
CPCC30B7/10C30B29/16B82Y30/00B82Y40/00C30B29/66
Inventor 董伟霞包启富顾幸勇
Owner JINGDEZHEN CERAMIC INSTITUTE
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