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Preparation method of novel Ti2CO2 two-dimensional MXene quantum dot material

A quantum dot material and quantum dot technology are used in the preparation of new Ti2CO2 two-dimensional MXene quantum dot materials to achieve the effect of uniform oxygenation

Pending Publication Date: 2022-07-29
补钰煜
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Current experimental data show that Ti 2 C and its many derivatives are conductive substances, but theoretical calculation data show that only Ti 2 CO 2 Two-dimensional new materials have semiconductor properties and are of great application value in the fields of energy storage, new energy conversion, catalysis, optoelectronic devices, flexible sensing, etc., but they have not been prepared in the laboratory so far.

Method used

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  • Preparation method of novel Ti2CO2 two-dimensional MXene quantum dot material
  • Preparation method of novel Ti2CO2 two-dimensional MXene quantum dot material
  • Preparation method of novel Ti2CO2 two-dimensional MXene quantum dot material

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Embodiment 1

[0035] A new type of Ti 2 CO 2 The preparation method of two-dimensional MXene quantum dot material comprises the following steps:

[0036] 1. Ti 2 Preparation of C Mxene Flakes

[0037] 11) Put 2.5g of Ti 2 AlC powder was added to 250 mL of 40 wt% HF solution and stirred at 32 °C for 24 h;

[0038] 12) Thoroughly wash the obtained black powder with ultrapure water, and centrifuge at 8000rpm for 5min until the pH of the supernatant is greater than or equal to 6;

[0039] 13) Dry in a vacuum oven at 80 °C for 12 h to obtain Ti 2 C Mxene flakes.

[0040] 2. Few-layer Ti 2 CT x Preparation of powder

[0041] 21) Weigh 0.01~0.1g of Ti 2 The C flakes were added to 500-1000 mL of dimethyl sulfoxide, and the resulting mixture solution was stirred at 25 °C to increase the interlayer spacing;

[0042] 22) After dimethyl sulfoxide treatment, the Ti 2 The C mixture solution was centrifuged and rinsed several times with deionized water until the DMSO was removed. Then, the pr...

Embodiment 2

[0053] A new type of Ti 2 CO 2 The preparation method of two-dimensional MXene quantum dot material comprises the following steps:

[0054] 1. Ti 2 Preparation of C Mxene Flakes

[0055] 11) Put 2.5g of Ti 2 AlC powder was added to 250 mL of 40 wt% HF solution and stirred at 32 °C for 24 h;

[0056] 12) Thoroughly wash the obtained black powder with ultrapure water, and centrifuge at 8000rpm for 5min until the pH of the supernatant is greater than or equal to 6;

[0057] 13) Dry in a vacuum oven at 80 °C for 12 h to obtain Ti 2 C Mxene flakes.

[0058] 2. Few-layer Ti 2 CT x Preparation of powder

[0059] 21) Weigh 0.01g of Ti 2 C flakes were added to 500 mL of dimethyl sulfoxide, and the resulting mixture solution was stirred at 25 °C to increase the interlayer spacing;

[0060] 22) After dimethyl sulfoxide treatment, the Ti 2 The C mixture solution was centrifuged and rinsed several times with deionized water until the DMSO was removed. Then, the pre-treated Ti ...

Embodiment 3

[0071] A new type of Ti 2 CO 2 The preparation method of two-dimensional MXene quantum dot material comprises the following steps:

[0072] 1. Ti 2 Preparation of C Mxene Flakes

[0073] 11) Put 2.5g of Ti 2 AlC powder was added to 250 mL of 40 wt% HF solution and stirred at 32 °C for 24 h;

[0074] 12) Thoroughly wash the obtained black powder with ultrapure water, and centrifuge at 8000rpm for 5min until the pH of the supernatant is greater than or equal to 6;

[0075] 13) Dry in a vacuum oven at 80 °C for 12 h to obtain Ti 2 C Mxene flakes.

[0076] 2. Few-layer Ti 2 CT x Preparation of powder

[0077] 21) Weigh 0.1g of Ti 2 C flakes were added to 1000 mL of dimethyl sulfoxide, and the resulting mixture solution was stirred at 25 °C to increase the interlayer spacing;

[0078] 22) After dimethyl sulfoxide treatment, the Ti 2 The C mixture solution was centrifuged and rinsed several times with deionized water until the DMSO was removed. Then, the pre-treated Ti ...

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Abstract

The invention relates to the technical field of two-dimensional MXene quantum dot materials, and discloses a preparation method of a novel Ti2CO2 two-dimensional MXene quantum dot material, and the preparation method comprises the following steps: 1, preparing a Ti2C Mxene sheet; (2) preparing less-layer Ti2CTx powder; (3) preparing two-dimensional MXene of Ti2CO2 (titanium dioxide); and 4, preparing the Ti2CO2 two-dimensional MXene quantum dot. According to the preparation method, the preparation of the Ti2CO2 two-dimensional material is realized by adopting an ozone pulse treatment method, the development of the Ti2CO2 quantum dots is realized by combining a hydrothermal cracking method on the basis, the preparation of the Ti2CO2 two-dimensional quantum dots is realized, and a feasible preparation technology is provided for the application of the Ti2CO2 two-dimensional MXene quantum dot material.

Description

technical field [0001] The invention relates to the technical field of two-dimensional MXene quantum dot materials, in particular to a new type of Ti 2 CO 2 Preparation method of two-dimensional MXene quantum dot material. Background technique [0002] Since the graphene two-dimensional material was developed in 2004, a large number of two-dimensional materials and their derivatives have been gradually developed so far, and are widely used in photovoltaic energy, electronic devices, catalysis and sensing detection and other fields. In 2011, researchers discovered that through the layered Ti 3 AlC 2 A new two-dimensional material TiC can be obtained by etching Al atoms in the material x . Typically, these 2D materials exfoliated from layered metal carbide / nitride compounds are called MXenes. [0003] So far, more than 40 MXene materials have been reported. Among these materials, due to the two-dimensional Ti 2 C and its functional group modifiers such as Ti 2 CF 2 ,...

Claims

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Application Information

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IPC IPC(8): C01B32/907B82Y40/00
CPCC01B32/907B82Y40/00
Inventor 补钰煜包军林
Owner 补钰煜