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Preparation method of CuI-BiOI/Cu thin-film material having antibacterial effect

A thin-film material and functional technology, applied in the field of photocatalytic nanomaterial synthesis, can solve problems affecting photoreaction efficiency, etc., and achieve the effects of simple and easy operation of equipment and process, low reagent pollution, and good circulation

Active Publication Date: 2017-10-20
FUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the recombination of electron-hole pairs after photoexcitation competes with the antibacterial process, and the existence of this reaction seriously affects the efficiency of the photoreaction.

Method used

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  • Preparation method of CuI-BiOI/Cu thin-film material having antibacterial effect
  • Preparation method of CuI-BiOI/Cu thin-film material having antibacterial effect
  • Preparation method of CuI-BiOI/Cu thin-film material having antibacterial effect

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Preparation and Antibacterial Performance Test of CuI-BiOI / Cu Composite Thin Film Material Prepared under the Condition of Water Bath Temperature of 70℃ and Water Bath Time of 24h

[0029] Preparation of CuI-BiOI / Cu Composite Thin Film Material

[0030] Add 20mL of bismuth nitrate solution (concentration: 0.05mol / L) and 20mL of potassium iodide solution (concentration: 0.05mol / L) to 20ml of the mixed solution of ethylene glycol and water (the volume ratio of ethylene glycol and water is 7:1). and 50mg polyvinylpyrrolidone, stir the obtained solution thoroughly, pour it into a 100ml polytetrafluoroethylene-lined reaction kettle, put it in an oven and heat it at 180°C for 3h; collect and wash the obtained solution , centrifuged, dried in an oven at 60°C under normal pressure and repeatedly ground to obtain orange-yellow BiOI powder; the obtained BiOI powder was added to 50ml aqueous solution containing 10g of polyethylene glycol with a molecular weight of 2000; Put the 3...

Embodiment 2

[0034] Bacterial inhibition zone experiment of CuI-BiOI / Cu composite thin film material prepared under the condition of water bath temperature of 70℃ and water bath time of 16h

[0035] Preparation of CuI-BiOI / Cu Composite Thin Film Material

[0036] Add 20mL of bismuth nitrate solution (concentration: 0.2mol / L), 20mL potassium iodide solution (concentration: 0.2mol / L) and 50mg of polyvinylpyrrolidone, after fully stirring the obtained solution, pour it into a 100ml polytetrafluoroethylene-lined reaction kettle, put it in an oven and heat it at 180°C for 3 hours; collect the obtained solution, wash it, Centrifuge, dry in an oven at 60°C under normal pressure, and grind repeatedly to obtain orange-yellow BiOI powder; add the obtained BiOI powder to 50ml aqueous solution containing 10g of polyethylene glycol with a molecular weight of 2000; pass through acetone and absolute ethanol in sequence Put the 3.5cm×3.5cm copper sheet pretreated with 0.1M hydrochloric acid solution into...

Embodiment 3

[0039] Bacterial inhibition zone experiment of CuI-BiOI / Cu composite film materials prepared under the condition of water bath temperature of 55℃ and water bath time of 24h

[0040] Preparation of CuI-BiOI / Cu Composite Thin Film Material

[0041] Add 13.3mL of bismuth nitrate solution (0.3mol / L concentration) and 13.3mL potassium iodide solution (0.3mol / L ) and 50mg polyvinylpyrrolidone, after fully stirring the obtained solution, pour it into a 100ml polytetrafluoroethylene-lined reaction kettle, put it in an oven and heat it at 180°C for 3h; collect the obtained solution, Wash, centrifuge, dry in an oven at 60°C under normal pressure, and then grind repeatedly to obtain orange-yellow BiOI powder; add the obtained BiOI powder to 50ml aqueous solution containing 10g of polyethylene glycol with a molecular weight of 2000; pass through acetone, no Put the 3.5cm×3.5cm copper piece pretreated by water ethanol and 0.1M hydrochloric acid solution into the above-mentioned solution; ...

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Abstract

The invention discloses a preparation method of a CuI-BiOI / Cu thin-film material having an antibacterial effect, and belongs to the technical field of material synthesis. The preparation method comprises the steps of adding bismuth oxyiodide powder prepared by a solvothermal method into a water solution containing a certain amount of polyethylene glycol; placing a pretreated copper sheet; and performing water-bath heating for a certain time to obtain a CuI-BiOI / Cu composite thin-film material. The preparation method provided by the invention is simple and easy to perform, devices and technological process are simple and easy to operate, and the prepared thin-film material has a good application prospect and is suitable for utilization in an environment which is warm, high in humidity or easy for breeding bacteria. The method has characteristics of low pollution of used agents, good repeatability of reactions, mild preparation conditions and the like. The prepared CuI-BiOI / Cu composite thin-film material exerts good catalytic activity in photocatalytic antibacterial processes and has stable properties and good cyclicity.

Description

technical field [0001] The invention belongs to the technical field of synthesis of photocatalytic nanometer materials, and in particular relates to a preparation method of a CuI-BiOI / Cu thin film material with an antibacterial function. Background technique [0002] Since researchers discovered TiO in 1972 2 Since the ability to decompose water into hydrogen and oxygen under ultraviolet light irradiation, semiconductor photocatalysis has greatly attracted the attention of researchers at home and abroad. Under light conditions, electrons in the outer layer of the semiconductor are excited and transition from the valence band to the conduction band, thereby generating electron-hole pairs. Photogenerated electron holes can directly attack bacteria, and electrons can be converted into other active species, such as: O 2 - , to further oxidize the outer membrane of bacteria, at the same time, other oxidation active species, such as • OH, H 2 o 2， • HO 2 , can also be genera...

Claims

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Application Information

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IPC IPC(8): B01J27/122
CPCB01J27/122B01J35/59B01J35/39
Inventor 林华香张忆秋王绪绪戴文新员汝胜龙金林张子重
Owner FUZHOU UNIV