Preparation method and use method of two-dimensional sheet layer material modified MXene/TiO2 composite material

A technology of composite materials and two-dimensional sheets, applied in chemical instruments and methods, catalyst activation/preparation, chemical/physical processes, etc., can solve problems such as large band gap, difficulty in forming electron-hole pairs, and application limitations , to achieve the effects of simple preparation process, improved visible light response, and low cost
CN110433834AInactive Publication Date: 2019-11-12FUJIAN UNIV OF TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
FUJIAN UNIV OF TECH
Publication Date
2019-11-12
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a two-dimensional sheet layer material modified MXene / TiO2 preparation method, wherein MXene comprises Mo2TiC3, Ti3C2, Ti2C, Nb2C, Nb4C3 and the like, and the MXene / TiO2 composite material is prepared by using MXene as a substrate through an in-situ method. The process comprises: preparing a two-dimensional sheet layer material MXene with a good layered structure, adding tetrabutyl titanate to MXene, and adding hydrofluoric acid and absolute ethanol to obtain the MXene / TiO2 composite material with uniformly distributed TiO2. According to the present invention, the preparation process is simple; the TiO2 in the obtained MXene / TiO2 composite material is distributed on the surface and the periphery of the MXene sheet layers, the ratio is adjustable, the visible light absorption of the composite material is enhanced, and the forbidden band width of the composite material is significantly reduced compared with TiO2 so as to easily achieve the electron-hole pair separation; and the novel MXene / TiO2 composite material can be used as a catalyst material in the field of photoelectrocatalysis.
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Description

technical field

[0001] The invention relates to MXene / TiO modified by a two-dimensional sheet material 2 Methods of making and using composite materials. Background technique

[0002] Environmental pollution and energy shortage are the main problems facing mankind today. Therefore, humans have been committed to finding simple and effective catalysts to degrade organic pollutants, reduce greenhouse gas carbon dioxide, and split water to produce hydrogen. Currently, two-dimensional materials such as graphene, MoS 2 Sheet, TiO 2 Sheets, MXene, etc. and their composite materials have been widely studied in improving and governing the environment.

[0003] Among them, TiO 2 As a semiconductor material, due to its low price, simple preparation method, low toxicity and other characteristics, it has been deeply studied earlier and applied in the field of photocatalysis. But due to TiO 2 The band gap is large, and it is difficult to form electron-hole pairs. At the same time, ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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