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MoO3-x nanobelt material regulated and controlled by one-dimensional plasma resonance absorption and application thereof

A plasma resonance and plasma technology, applied in water/sewage treatment, general water supply saving, molybdenum oxide/molybdenum hydroxide, etc. Strong absorbing performance, good for escape

Inactive Publication Date: 2020-09-25
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, current plasmonic MoO-based 3-x Solar-driven interfacial water evaporation materials of nanobelts have not been reported

Method used

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  • MoO3-x nanobelt material regulated and controlled by one-dimensional plasma resonance absorption and application thereof
  • MoO3-x nanobelt material regulated and controlled by one-dimensional plasma resonance absorption and application thereof
  • MoO3-x nanobelt material regulated and controlled by one-dimensional plasma resonance absorption and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] One-dimensional MoO with oxygen vacancy defects 3-x Nanobelts are prepared as follows:

[0042] (1) Get 0.6g of metal Mo powder, disperse it in 15mL of deionized water, under magnetic stirring, add 4mL of hydrogen peroxide solution (30wt%) to dissolve, and obtain molybdenum source peroxymolybdic acid colloid;

[0043] (2) Add 1000 μL of surface ligand protection and weak reducing agent polyethylene glycol (PEG) solution into a 50 mL polytetrafluoroethylene liner, stir magnetically and heat in a reactor oven at 180° C. for 12 h. The volume ratio of PEG to peroxymolybdic acid colloid is 0.01-0.05:1.

[0044] (3) Cool to room temperature after the reaction, and centrifuge wash with water and acetone to obtain one-dimensional MoO with different concentrations of oxygen vacancy defects 3-x nanobelt.

[0045] One-dimensional MoO with oxygen vacancy defects with different LSPR absorption intensities can be obtained by adjusting the reaction time, surface ligand protection a...

Embodiment 2

[0057] Embodiment 2, improve the consumption of PEG:

[0058] As described in Example 1, a MoO-based 3-x The preparation method of the solar-driven interfacial water evaporation device of the nanobelt comprises the following steps:

[0059] (1) MoO prepared under the condition that the volume ratio of PEG to peroxymolybdic acid colloid is 0.2:1 3-x Take 500 mg of nanobelts, disperse them in 100 mL of deionized water, and disperse them evenly by ultrasonic vibration to obtain MoO 3-x nanoribbon suspension;

[0060] (2) Deposit the above suspension on dust-free paper by means of sand core suction filtration, with a loading capacity of 30 mg / cm 2 , and heated and dried at 70 °C for 24 h to obtain one-dimensional plasmon resonance absorption regulated MoO 3-x nanoribbon material;

[0061] (3) MoO regulated by one-dimensional plasmon resonance absorption 3-x The nanobelt material is wrapped on the pearl cotton foam and placed on the water surface to obtain a solar-driven inte...

Embodiment 3

[0062] Embodiment 3, PEG is changed into polyvinylpyrrolidone PVP:

[0063] As described in Example 1, a MoO-based 3-x The preparation method of the interfacial water evaporation device of the nanobelt comprises the following steps:

[0064] (1) MoO prepared by using 1g polyvinylpyrrolidone PVP (Mw=130000) 3-x Take 500 mg of nanobelts, disperse them in 100 mL of deionized water, and disperse them evenly by ultrasonic vibration to obtain MoO 3-x nanoribbon suspension;

[0065] (2) Deposit the above suspension on dust-free paper by means of sand core suction filtration, with a loading capacity of 50 mg / cm 2 , and heated and dried at 70 °C for 24 h to obtain one-dimensional plasmon resonance absorption regulated MoO 3-x nanoribbon material;

[0066] (3) MoO regulated by one-dimensional plasmon resonance absorption 3-x The nanobelt material is wrapped on the pearl cotton foam and placed on the water surface to obtain a solar-driven interfacial water evaporation device.

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Abstract

The invention relates to a MoO3-x nanobelt material for one-dimensional plasma resonance absorption regulation and control and an application thereof. The material comprises a one-dimensional MoO3-x (x is greater than less than1) nanobelt with an oxygen vacancy defect and a carrier for loading the nanobelt. The macromolecules such as PEG (polyethylene glycol) are used as a surface protection ligand and a weak reducing agent, the oxygen defect state MoO3-x is obtained through reduction, meanwhile, the one-dimensional strip-shaped morphology is kept, and strong plasma absorption matched with sunlight in the full spectrum range is obtained by means of oxygen vacancy defects and MoO3-x nanoribbons; and the one-dimensional MoO3-x nanobelt with plasma absorption is dispersed in deionized water to obtain a dispersion liquid, then loading the dispersion liquid on the surface of the carrier, and drying is carried out to obtain the MoO3-x nanobelt photocatalyst. The MoO3-x nanobelt material hashigh water evaporation efficiency and long cycle life, and has great application value in the fields of sea water desalination, sewage purification and the like.

Description

technical field [0001] The invention relates to a MoO regulated by one-dimensional plasmon resonance absorption 3-x Nanoribbon materials and their application in solar-driven interfacial water evaporation belong to the field of functional materials. Background technique [0002] At present, the crisis of clean water resources has become a serious problem that needs to be solved urgently on a global scale. According to recent surveys, one fifth of the world's population currently lacks fresh water, especially in arid and remote areas. Solar-driven interfacial water evaporation technology is an effective way to harness the renewable energy solar energy to obtain sustainable clean water. The so-called interfacial water evaporation means that a porous floating device is placed at the interface between water and air. The device utilizes efficient light-to-heat conversion performance to position solar thermal heating at the interface, so that the water at the interface is rapidl...

Claims

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Application Information

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IPC IPC(8): C01G39/02C02F1/14
CPCC01G39/02C01P2002/84C01P2004/01C01P2004/03C01P2004/17C02F1/14Y02A20/124Y02A20/142Y02A20/212
Inventor 王文寿李新典王东洋刘伦涛
Owner SHANDONG UNIV
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