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Preparation of nanoparticle/phyllostachys pubescens fiber composite material through one-step solvent heat

A nanoparticle and fiber composite technology, applied in the field of photocatalysis, can solve the problems of inability to fully utilize sunlight, inability to reuse, and low material efficiency, and achieve the effect of convenient processing, beneficial to recycling, and good uniformity.

Inactive Publication Date: 2017-12-26
UNIV OF JINAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these nanomaterials have the following main disadvantages: one is that some semiconductor materials (such as TiO 2 , ZnO, etc.) can only absorb ultraviolet light, so that sunlight cannot be fully utilized; second, because photogenerated electron-hole pairs are easy to recombine in the interior or surface of the semiconductor particle phase, the quantum efficiency is low; third, the recovery rate is relatively low , cannot be fully reused
However, the use of a thin film carrier in the above options makes the overall material less efficient

Method used

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  • Preparation of nanoparticle/phyllostachys pubescens fiber composite material through one-step solvent heat
  • Preparation of nanoparticle/phyllostachys pubescens fiber composite material through one-step solvent heat
  • Preparation of nanoparticle/phyllostachys pubescens fiber composite material through one-step solvent heat

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0024] (1) Weigh a certain amount of pretreated bamboo fiber and put it into a tube furnace for carbonization under an inert atmosphere of argon. The setting parameters of the tube furnace are as follows: starting from room temperature of 20°C, heating to 200°C at 10°C / min; heating to 500°C at 5°C / min; cooling to room temperature after constant temperature for 1 hour. The argon ventilation rate is 0.5L / min;

[0025] (2) Weigh 100mg of carbonized bamboo fiber into a 50mL inner tank of the reaction kettle, weigh 30mL of absolute ethanol in a graduated cylinder, and add 500μL of acetic acid into the inner tank of the reaction kettle with a pipette gun. Add 8.9 μL of isopropyl titanate into the reaction kettle, add a magnetic rotor and stir on a magnetic stirrer for 2 h, this sample is recorded as A-TiO2 / BF;

[0026] (3) Take out the magnetic rotor in the inner tank of the reaction kettle, clean it, dry it and store it for the next use. Seal the reaction kettle device containing...

example 2

[0029] (1) Weigh a certain amount of pretreated bamboo fiber and put it into a tube furnace for carbonization under an inert atmosphere of argon. The setting parameters of the tube furnace are as follows: starting from room temperature of 20°C, heating to 200°C at 10°C / min; heating to 500°C at 5°C / min; cooling to room temperature after constant temperature for 1 hour. The argon ventilation rate is 0.5L / min;

[0030] (2) Weigh 100mg of carbonized bamboo fiber into a 50mL inner tank of the reaction kettle, weigh 30mL of absolute ethanol in a graduated cylinder, and add 500μL of acetic acid into the inner tank of the reaction kettle with a pipette gun. Add 17.8 μL isopropyl titanate into the reaction kettle, add a magnetic rotor and stir on a magnetic stirrer for 2 h, this sample is recorded as B-TiO 2 / BF;

[0031](3) Take out the magnetic rotor in the inner tank of the reaction kettle, clean it, dry it and store it for the next use. Seal the reaction kettle device containing...

example 3

[0034] (1) Weigh a certain amount of pretreated bamboo fiber and put it into a tube furnace for carbonization under an inert atmosphere of argon. The setting parameters of the tube furnace are as follows: starting from room temperature of 20°C, heating to 200°C at 10°C / min; heating to 500°C at 5°C / min; cooling to room temperature after constant temperature for 1 hour. The argon ventilation rate is 0.5L / min;

[0035] (2) Weigh 100mg of carbonized plant fiber into a 50mL reactor liner, weigh 30mL absolute ethanol in a graduated cylinder, and add 500μL of acetic acid into the reactor liner with a pipette gun. Add 35.5 μL of isopropyl titanate into the reaction kettle, add a magnetic rotor and stir on a magnetic stirrer for 2 h, this sample is recorded as C-TiO2 / BF;

[0036] (3) Take out the magnetic rotor in the inner tank of the reaction kettle, clean it, dry it and store it for the next use. Seal the reaction kettle device containing the reaction system completely, put it in ...

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Abstract

The invention provides a method for preparing a nanoparticle-carbonized plant fiber composite photocatalytic material by adhering nanoparticles to the surface of a fiber through synthesis by taking carbonized plant fiber as a carrier and using a one-step solvent heat method. A nanoparticle-carbonized phyllostachys pubescens plant fiber photocatalyst prepared by using the solvent heat method is simple in preparation process, convenient in raw material treatment, precise in product component adjustment and control, good in uniformity and excellent in property. The carbonized phyllostachys pubescens plant fiber still has original microstructures and morphology, so that not only is a compounding function of nanoparticles and plant carbon fibers improved, and an excellent compounding effect is achieved, but also the adsorption amount of organic pollutants is increased, and then the photocatalysis activity is improved. Along with increase of the amount of titanium isopropoxide, the load capacity of TiO2 is increased, the synergistic effect of TiO2 compounded with the carbonized plant fiber is also improved, and the photocatalysis effect is remarkably improved. The composite photocatalyst disclosed by the invention is not only capable of greatly improving photocatalysis activity, but also simple in process and low in cost and has wide application values and application prospects in the field of photocatalysis.

Description

technical field [0001] The invention relates to a method for preparing nanoparticle-carbonized plant fiber composite photocatalyst by one-step solvothermal, belonging to the technical field of photocatalysis. Background technique [0002] With the development of social productive forces, environmental pollution has become increasingly serious, and the environment has become a major issue that directly affects human survival and development. Photocatalytic technology can directly use solar energy, can deal with most harmful substances in water and air, is cheap, environmentally friendly, and has the hope of realizing hydrogen production by photolysis of water, so it has become one of the most promising green and clean technologies to solve environmental problems. one. The core of photocatalytic technology is photocatalyst, and the substances with photocatalytic activity found so far are mainly metal oxides (TiO 2 , ZnO, Bi 2 o 3 , Fe 2 o 3 、WO 3 , SnO 2 etc.), sulfide...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J21/18B01J20/20B01J20/30
CPCB01J20/06B01J20/20B01J21/18B01J2220/4825B01J2220/4806B01J2220/42B01J35/39
Inventor 任保胜王慧陈其凤
Owner UNIV OF JINAN