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Method for preparing two-dimensional locally-oxidized transition metal fluoride catalyst through rapid heating

A transition metal, rapid heating technology, applied in the fields of materials science and engineering technology and chemistry, can solve problems such as complex methods, restrictions on the development and application of two-dimensional materials, expensive efficiency, etc., and achieve the effect of fast production

Active Publication Date: 2019-11-29
BEIJING UNIV OF POSTS & TELECOMM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although researchers have investigated many methods for synthesizing 2D materials, these methods are often complex, expensive and inefficient
The lack of chemical or physical methods to synthesize ultrathin nanomaterials in large quantities limits the further development and application of these 2D materials
Therefore, a simple, fast and economical method for large-scale production of 2D nanomaterials remains an interesting challenge

Method used

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  • Method for preparing two-dimensional locally-oxidized transition metal fluoride catalyst through rapid heating
  • Method for preparing two-dimensional locally-oxidized transition metal fluoride catalyst through rapid heating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Preparation of locally oxidized cobalt fluoride two-dimensional nanomaterials.

[0025] First, weigh raw material A: 300mg CoF 2 4H 2 O, quickly put raw material A into a muffle furnace at 400°C for 20 minutes, then quickly take out the reacted sample, let it cool down to room temperature naturally, clean the sample by repeated centrifugal cleaning, and dry it in vacuum to obtain Locally oxidized cobalt fluoride two-dimensional nanomaterials. Wherein each centrifugation rate is 10000 revolutions, centrifugation time is 10min.

Embodiment 2

[0027] Preparation of locally oxidized cobalt fluoride two-dimensional nanomaterials.

[0028] First, weigh raw material A: 300mg CoF 2 4H 2 O, quickly put raw material A into a muffle furnace at 450°C for 20 minutes, then quickly take out the reacted sample, let it cool down to room temperature naturally, clean the sample by repeated centrifugal cleaning, and dry it in vacuum to obtain Locally oxidized cobalt fluoride two-dimensional nanomaterials. Wherein each centrifugation rate is 10000 revolutions, centrifugation time is 10min.

Embodiment 3

[0030]Preparation of locally oxidized cobalt fluoride two-dimensional nanomaterials.

[0031] First, weigh raw material A: 300mg CoF 2 4H 2 O, quickly put raw material A into a muffle furnace at 500°C for 20 minutes, then quickly take out the reacted sample, let it cool down to room temperature naturally, clean the sample by repeated centrifugal cleaning, and vacuum dry it to obtain Locally oxidized cobalt fluoride two-dimensional nanomaterials. Wherein each centrifugation rate is 10000 revolutions, centrifugation time is 10min.

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Abstract

The invention relates to a method for preparing a two-dimensional locally-oxidized transition metal fluoride catalyst through rapid heating, belonging to the fields of material science and engineeringtechnology and chemistry. The oxidized transition metal fluoride catalyst prepared by using the method disclosed by the invention is formed by local oxidation of nanometer materials such as cobalt fluoride (CoF2), nickel fluoride (NiF2), iron fluoride (FeF3) and the like. The preparation method comprises the following steps: weighing a certain mass of hydrated fluoride as a raw material A, and rapidly changing the temperature environment of the raw material A to prepare the two-dimensional locally-oxidized transition metal fluoride catalyst. The method has the advantages of easiness, feasibility, high yield, high efficiency, good applicability and the like, and has remarkable advantages compared with traditional methods for preparing ultrathin two-dimensional nanomaterials.

Description

[0001] (2) Technical field [0002] The invention relates to a method for rapidly raising the temperature to prepare a transition group metal fluoride catalyst for two-dimensional local oxidation, and belongs to the fields of material science and engineering technology and chemistry. [0003] (3) Background technology [0004] So far, scientists have reported a variety of methods for preparing 2D nanomaterials. One of the most common strategies used to prepare 2D nanomaterials is mechanical or chemical exfoliation of some layered materials such as BN, MoS 2 , MoSe 2 ,MoTe 2 and TaSe, these materials possess strong in-plane chemical bonds and weak out-of-plane van der Waals interactions, and are easily exfoliated vertically in the in-plane direction under extreme conditions. The preparation of MXene in two-dimensional nanomaterials is by starting from MAX phase solids (such as Ti 3 AlC 2 ) selectively etch group A atoms. Many 2D metal oxide nanomaterials, such as TiO 2 , ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/12B01J27/128B01J27/132B01J27/138
CPCB01J27/128B01J27/12B01J27/132B01J27/138B01J35/33
Inventor 黄凯雷鸣赵泽璧
Owner BEIJING UNIV OF POSTS & TELECOMM
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