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Efficient photo-thermal conversion material with roll-like structure as well as preparation method and application thereof

A photothermal conversion and photothermal technology, applied in chemical instruments and methods, general water supply conservation, water/sludge/sewage treatment, etc., can solve problems such as difficulty in expansion and restriction, and achieve the effect of improving absorption and capture performance

Active Publication Date: 2019-09-17
QINGDAO INST OF BIOENERGY & BIOPROCESS TECH CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The surface morphology is directly affected by the substrate, it is difficult to expand to other substrate material systems, and the application is further restricted

Method used

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  • Efficient photo-thermal conversion material with roll-like structure as well as preparation method and application thereof
  • Efficient photo-thermal conversion material with roll-like structure as well as preparation method and application thereof
  • Efficient photo-thermal conversion material with roll-like structure as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Depend on figure 1 Shown:

[0042] (1) Immerse a circular hydrophilic polyvinylidene fluoride (PVDF) membrane with a diameter of 50 mm to a concentration of 0.2 mol L -1 Ammonium persulfate aqueous solution, standing at room temperature for 12 hours. Take out the impregnated PVDF membrane and dry it naturally.

[0043] (2) Repeat the dipping-drying operation of step (1) twice.

[0044] (3) Take 10 μL of pyrrole and place it in a container, and seal the treated PVDF membrane obtained in step (2) together in the container. Incubate at 70°C for 60min. The amount of pyrrole is equivalent to 0.5 μL corresponding to the surface area of ​​the substrate material per square centimeter

[0045] (4) Wash the surface-modified membrane material obtained in step (3) with deionized water and ethanol in turn until the washing solution is colorless, and then dry it naturally (see figure 2 and 3 ). Depend on figure 2 , 3 The surface morphology and cross-section of the polymer a...

Embodiment 2

[0049] The difference from Example 1 is:

[0050] Replace the base material in step (1) with carbon cloth, carbon paper, non-woven fabric, dust-free paper, cotton cloth, gauze, nickel foam, polycarbonate (PC) membrane, polysulfone (PSF) membrane, polyethersulfone (PES) film, cellulose acetate film, mixed cellulose ester film (MCE), polyamide (PA) film, polyacrylonitrile (PAN) film; and then respectively obtain roll-shaped photothermal materials from the above base materials.

Embodiment 3

[0052] The difference from Example 1 is:

[0053] Set the substrate size in step (1) to a circle of 5mm, 10mm, 20mm, 100mm, 200mm, and 500mm, respectively. The size is a rectangle of 5mm × 5mm, 10mm × 10mm, 20mm × 20mm, 100mm × 100mm, 200mm × 100mm, 500mm × 100mm, and is directly crimped into a hollow cylinder in step (5).

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Abstract

The invention belongs to the field of environmental energy application, and relates to an efficient photo-thermal conversion material and preparation thereof, and specifically relates to an efficient photo-thermal conversion material with a macroscopically controllable morphology roll-like structure as well as preparation method and application thereof. The photo-thermal material is a three-dimensional photo-thermal material obtained by modification and rolling. The photo-thermal conversion roll is composed of a base with a gap structure and a functional photo-thermal polymer, and has a macroscopic cone or cylinder hollow structure. The photo-thermal roll provided by the invention remarkably promotes the water evaporation efficiency.

Description

technical field [0001] The invention belongs to the field of environmental energy applications, and relates to a high-efficiency photothermal conversion material and its preparation, in particular to a high-efficiency photothermal conversion material with a roll-like structure with a macroscopically controllable morphology, its preparation method and application. Background technique [0002] The light-driven water evaporation process has broad application prospects in the field of preparing clean fresh water, and is of great significance in alleviating the shortage of fresh water resources. However, under natural evaporation conditions, the utilization rate of light is low, and the actual evaporation rate is slow, which makes it difficult to meet the needs of large-scale freshwater production. Therefore, in real life, the preparation of clean fresh water based on light-driven evaporation is often used as an emergency measure in environments such as shipwreck, wild survival,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/14
CPCC02F1/14C02F1/043C02F2103/08Y02A20/212
Inventor 江河清王玉超焦成丽
Owner QINGDAO INST OF BIOENERGY & BIOPROCESS TECH CHINESE ACADEMY OF SCI
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