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Oxyferric chloride microsheets loaded with noble metal nanoparticles and preparation method thereof

A ferric oxychloride and nanoparticle technology, applied in chemical instruments and methods, oxidized water/sewage treatment, chemical/physical processes, etc., can solve the problem of products that cannot obtain catalytic degradation efficacy, difficult catalytic degradation efficacy, and complicated preparation methods. and other problems, to achieve the effect of high Fenton catalytic degradation of sewage, low production cost and simple preparation method.

Inactive Publication Date: 2017-07-18
HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But no matter it is modified oxyferric chloride or its preparation method, there are deficiencies. First of all, although modified oxyferric chloride is used as lithium secondary battery cathode material, its charge-discharge performance has improved. Obvious improvement, but because its shape is too single, when used as catalyst for Fenton's catalytic degradation of sewage, it is difficult to have a higher catalytic degradation effect; secondly, the preparation method is complicated, time-consuming and energy-consuming, and cannot be obtained Products with higher catalytic degradation efficacy

Method used

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  • Oxyferric chloride microsheets loaded with noble metal nanoparticles and preparation method thereof
  • Oxyferric chloride microsheets loaded with noble metal nanoparticles and preparation method thereof
  • Oxyferric chloride microsheets loaded with noble metal nanoparticles and preparation method thereof

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Effect test

Embodiment 1

[0032] The concrete steps of preparation are:

[0033] Step 1, first place the noble metal target in a stirred 0.01mol / L ferric chloride solution; wherein, the noble metal target is a gold target, and the ferric chloride solution is an aqueous ferric chloride solution. Then use a laser with a wavelength of 532nm (or 1064nm), a repetition rate of 1Hz, a pulse width of 15ns, and a power of 40mJ / pulse to irradiate the noble metal target for 3 minutes; wherein, the laser spot diameter is 1.5mm, and the emission wavelength is 532nm (or 1064nm ) laser is a Nd:YAG solid-state laser to obtain a mixed colloidal solution.

[0034] Step 2, the solid-liquid separation, washing and drying process are carried out successively to the mixed colloidal solution; Wherein, the solid-liquid separation process is centrifugation, its rotating speed is 1000r / min, the time is 6min, and the washing process is to use deionized water (or ethanol or acetone) to wash the separated solid matter twice, the ...

Embodiment 2

[0036] The concrete steps of preparation are:

[0037] Step 1, first place the noble metal target in a stirred 0.05mol / L ferric chloride solution; wherein, the noble metal target is a gold target, and the ferric chloride solution is an aqueous ferric chloride solution. Then use a laser with a wavelength of 532nm (or 1064nm), a repetition rate of 5Hz, a pulse width of 12.5ns, and a power of 60mJ / pulse to irradiate the noble metal target for 2.5min; wherein, the laser spot diameter is 1.8mm, and the emission wavelength is 532nm ( Or 1064nm) laser is a Nd:YAG solid-state laser to obtain a mixed colloidal solution.

[0038] Step 2, the solid-liquid separation, washing and drying process are carried out successively to the mixed colloidal solution; Wherein, the solid-liquid separation process is centrifugation, its rotating speed is 3000r / min, the time is 5min, and the washing process is to use deionized water (or ethanol or acetone) to wash the separated solid matter twice, the s...

Embodiment 3

[0040] The concrete steps of preparation are:

[0041] Step 1, first place the noble metal target in a stirred 0.2mol / L ferric chloride solution; wherein, the noble metal target is a gold target, and the ferric chloride solution is an aqueous ferric chloride solution. Then use a laser with a wavelength of 532nm (or 1064nm), a repetition rate of 10Hz, a pulse width of 10ns, and a power of 80mJ / pulse to irradiate the noble metal target for 2 minutes; where the laser spot diameter is 2mm, and the emission wavelength is 532nm (or 1064nm) The laser used is a Nd:YAG solid-state laser to obtain a mixed colloidal solution.

[0042]Step 2, the solid-liquid separation, washing and drying process are carried out successively to the mixed colloidal solution; Wherein, the solid-liquid separation process is centrifugation, its rotating speed is 6000r / min, the time is 4min, and the washing process is to use deionized water (or ethanol or acetone) to wash the separated solid matter 3 times, ...

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Abstract

The invention discloses an oxyferric chloride microsheet loaded with noble metal nanoparticles and a preparation method thereof. Microsheets have a length of 5-50 μm, a width of 2-10 μm, and a thickness of 0.2-1 μm, and are loaded with noble metal nanoparticles with a particle size of 10-120 nm, wherein the noble metal is gold, or platinum, or silver ;Methods First place the noble metal target in the ferric chloride solution under stirring, and then use laser irradiation with a wavelength of 532nm or 1064nm, a repetition frequency of 1-20Hz, a pulse width of 5-15ns, and a power of 40-120mJ / pulse The noble metal target is used for at least 1 min to obtain a mixed colloidal solution, and then the mixed colloidal solution is sequentially subjected to solid-liquid separation, washing and drying to obtain the target product. It has a higher performance of Fenton's catalytic degradation of sewage, and is extremely easy to be widely commercially applied to the catalytic degradation of pollutants in aqueous solution.

Description

technical field [0001] The invention relates to an oxyferric chloride microsheet and a preparation method thereof, in particular to an oxyferric chloride microsheet loaded with noble metal nanoparticles and a preparation method thereof. Background technique [0002] The crystal structure of ferric oxychloride (FeOCl) has layered characteristics, and the layers are bonded by van der Waals force. It can be used as a host material for embedding small molecules or ions. It can be used in conductive polymers, low-dimensional conductor materials, and lithium batteries. Energy, Fenton catalytic degradation of sewage and other aspects have important applications. Recently, people have made some useful attempts in order to obtain structurally stable oxyferric chloride, as in "Research on Modified Treatment of Oxyferric Chloride", "Battery" Volume 24, No. 4 (August 1994 ) discloses a modified oxyferric chloride and its preparation method on pages 160-162. The modified oxyferric chlo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J27/13B01J27/128C02F1/72
Inventor 张洪文王莹莹蔡伟平
Owner HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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