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A petal-like molybdenum disulfide film and its preparation method and application

A molybdenum disulfide, petal technology, applied in textiles and papermaking, plant fibers, fiber processing and other directions, can solve the problems of high price, difficult dispersion, poor air permeability, etc. Effect

Active Publication Date: 2020-07-24
宁波智正伟盈信息科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The first materials used for photothermal steam conversion include gold, silver and other noble metal nanofluids and their macroscopic assembly materials, but the expensive price, the nature of easy agglomeration and the fragile stability of the assembly materials limit their practical applications.
Carbon nanomaterials have been widely studied by researchers due to their low cost, excellent light absorption and large specific surface area, but there are still problems of difficult dispersion and poor gas permeability.

Method used

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  • A petal-like molybdenum disulfide film and its preparation method and application
  • A petal-like molybdenum disulfide film and its preparation method and application
  • A petal-like molybdenum disulfide film and its preparation method and application

Examples

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preparation example Construction

[0033] The invention provides a method for preparing a petal-like molybdenum disulfide film, comprising the following steps:

[0034] (1) soaking the desized cotton cloth in the seed solution and then drying to obtain a cotton cloth with deposited crystal nuclei, wherein the seed solution includes a molybdenum salt and a reducing agent;

[0035] (2) Soak the cotton cloth of the deposited crystal nucleus obtained in the step (1) in a growth solution to generate a self-growth reaction of molybdenum disulfide to obtain a petal-like molybdenum disulfide film, and the growth solution includes a molybdenum salt and a reducing agent;

[0036] The reducing agent in the seed solution and the growth solution independently includes one or more of thiourea, sodium thiosulfate and sodium sulfide; the respective concentrations of the molybdenum salt and the reducing agent in the growth solution are respectively higher than those in the seed solution Concentrations of molybdenum salts and re...

Embodiment 1

[0071] (1) Desizing treatment of cotton cloth: first, 4.5×4.5cm 2 Cotton cloth soaked in sodium hydroxide (3g L -1 ) solution, heated at 90°C for 12 hours. Then, wash with 90° C. deionized water for 8 hours, and change the water every two hours. Treated cotton cloths were vacuum dried at 60 °C for 5 h and stored in Petri dishes for future use.

[0072] (2) Self-growth of molybdenum disulfide on cotton cloth: soak the desized cotton cloth in step (1) in the mixed solution of 20mL seed solution, sodium molybdate dihydrate (0.01M) and thiourea (0.02M) for 2 hours, Then vacuum dry at 60° C. for 5 hours. Subsequently, put it and 30mL growth solution, that is, a mixture of sodium molybdate dihydrate (0.05M) and thiourea (0.1M) at a higher concentration in the reaction kettle, and react at a high temperature of 200°C for 20 hours, and cool to At room temperature, wash with water and ethanol several times, and dry in vacuum at 60°C for 5 hours. That is, a molybdenum disulfide fil...

Embodiment 2

[0081] The hydrophilic cotton cloth prepared in Example 1 is the petal-like molybdenum disulfide film (cut into a diameter of 35mm) floating on 25mL of pure water through the polystyrene foam wrapped in dust-free paper. -2 Irradiate for 1 hour.

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Abstract

The invention provides a preparation method of a petal-like molybdenum disulfide film, belonging to the field of functional nanomaterials. According to the preparation method, cotton cloth is taken asa substrate of the molybdenum disulfide film to lower the cost and provide stable support; the cotton cloth can resist high temperature and can preserve complete fiber structure and air permeabilityin the hydrothermal reaction, so that a good ventilating channel is provided for steam; petal-like molybdenum disulfide is taken as a photothermal conversion material, and as a graphene-similar material, petal-like molybdenum disulfide has the advantage of large specific surface area, has high light absorption property in a whole solar spectrum and is capable of rapidly converting light into heatunder the illumination, so that efficient solar energy steam accumulation is realized; and a photothermal conversion film can be prepared through pollution-free hydrothermal reaction in one step, so that the process is simple, and the large area production is easily realized. Data of the embodiment shows that the steam evaporation rate of the prepared petal-like molybdenum disulfide film is up to1.3kg.m<-2>.h<-1>.

Description

technical field [0001] The invention relates to the technical field of functional nanometer materials, in particular to a petal-like molybdenum disulfide film and its preparation method and application. Background technique [0002] In the 21st century, the lack of drinking water has become one of the most pervasive challenges facing mankind, and with the growth of population and rapid industrial development, the problem is becoming more and more entrenched. Recently, solar desalination, as a low-cost and non-polluting technology, has come into the spotlight. Harnessing solar energy to generate clean water from seawater and industrial wastewater is a promising technology to address water scarcity. For practical applications, maximizing the use of solar energy is a necessary technology. Conventional solar desalination technology is not feasible due to the large heat loss. The solar steam method using photothermal basement film for local heating is considered to be the most...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06M11/53D06M101/06
CPCD06M11/53D06M2101/06
Inventor 王贤保郭珍珍王刚梅涛李金华王建颖钱静雯
Owner 宁波智正伟盈信息科技有限公司