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A kind of copper phthalocyanine/γ-bismuth molybdate composite nanofiber photocatalytic material and its preparation method and application

A technology of composite nanofibers and photocatalytic materials, applied in the field of photocatalytic materials, can solve the problems of difficult recycling and reuse, high application cost, unfavorable photo-generated carrier transport and separation, etc., so as to improve photocatalytic efficiency, facilitate transport and Separating and enhancing the effect of photocatalytic efficiency

Active Publication Date: 2019-05-28
南通光烁通信设备有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the composite material prepared by the above method is not a one-dimensional nanomaterial, which is not conducive to the transmission and separation of photogenerated carriers, and is difficult to recycle and reuse, and the application cost is high

Method used

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  • A kind of copper phthalocyanine/γ-bismuth molybdate composite nanofiber photocatalytic material and its preparation method and application
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  • A kind of copper phthalocyanine/γ-bismuth molybdate composite nanofiber photocatalytic material and its preparation method and application

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Experimental program
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Effect test

Embodiment 1

[0064] A preparation method of copper phthalocyanine / γ-bismuth molybdate composite nanofiber photocatalytic material includes the following steps:

[0065] (1) Preparation of spinnable precursor sol: Dissolve 1.0 g of citric acid in 8 ml of deionized water at room temperature, and stir until dissolved; then add 0.177 g of ammonium molybdate and 0.970 g of bismuth nitrate pentahydrate to the above To the solution, add 1.6ml of 68% concentrated nitric acid and stir at room temperature for 2h to obtain a clear and transparent solution B; add 3ml of solution B and 1.5ml of 68% concentrated nitric acid to 15ml of absolute ethanol and mix at room temperature The solution D is uniformly obtained; 1.2 g of polyvinylpyrrolidone (PVP, K-90) is dissolved in the above solution D and stirred at room temperature for 15 hours to obtain a spinnable precursor sol.

[0066] (2) Preparation of γ-bismuth molybdate nanofibers: transfer the spinnable precursor sol obtained in step (1) into a 20ml plasti...

Embodiment 2

[0070] A preparation method of copper phthalocyanine / γ-bismuth molybdate composite nanofiber photocatalytic material includes the following steps:

[0071] (1) Preparation of spinnable precursor sol: Dissolve 2.5g of citric acid in 20ml of deionized water at room temperature, and stir until dissolved; then add 0.442g of ammonium molybdate and 2.425g of bismuth nitrate pentahydrate to the above To the solution, add 3ml of concentrated hydrochloric acid with a mass fraction of 37% and stir at room temperature for 1 hour to obtain a clear and transparent solution B. Add 2ml of solution B and 1.0ml of 37% concentrated hydrochloric acid to 10ml of absolute ethanol, mix well at room temperature to obtain solution D; dissolve 0.75g of polyvinylpyrrolidone (PVP, K-90) in the above solution D, After stirring at room temperature for 12 hours, a spinnable precursor sol was obtained.

[0072] (2) Preparation of γ-bismuth molybdate nanofibers: transfer the spinnable precursor sol obtained in s...

Embodiment 3

[0077] A preparation method of copper phthalocyanine / γ-bismuth molybdate composite nanofiber photocatalytic material includes the following steps:

[0078] (1) Preparation of spinnable precursor sol: Dissolve 2g of citric acid in 16ml of deionized water at room temperature and stir until dissolved; then add 0.353g of ammonium molybdate and 1.94g of bismuth nitrate pentahydrate to the above solution Then, add 2ml of concentrated hydrochloric acid with a mass fraction of 37% and stir at room temperature for 4 hours to obtain a clear and transparent solution B. Add 2ml of solution B and 2.0ml of 37% concentrated hydrochloric acid to 8ml of absolute ethanol, mix well at room temperature to obtain solution D; dissolve 1g of polyvinylpyrrolidone (PVP, K-90) in the above solution D at room temperature After 24 hours of stirring, a spinnable precursor sol is obtained.

[0079] (2) Preparation of γ-bismuth molybdate nanofibers: transfer the spinnable precursor sol obtained in step (1) into...

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Abstract

The invention provides a copper phthalocyanine / γ-bismuth molybdate composite nanofiber photocatalytic material and its preparation method and application. A spinnable precursor sol was prepared using ammonium molybdate, bismuth nitrate pentahydrate, citric acid, inorganic acid and polyvinylpyrrolidone as the main raw materials. The above precursor sol was electrospun into gel fibers using electrospinning technology, and then calcined. γ-Bismuth molybdate nanofibers are obtained; then copper phthalocyanine is loaded onto the surface of γ-Bismuth molybdate nanofibers through a solvothermal method to prepare a copper phthalocyanine / γ-Bismuth molybdate composite nanofiber photocatalytic material. The prepared nanofiber photocatalytic material has high photocatalytic activity and can be recycled and reused, which greatly reduces the application cost.

Description

Technical field [0001] The invention relates to a copper phthalocyanine / γ-bismuth molybdate composite nanofiber photocatalytic material and a preparation method and application thereof, and belongs to the technical field of photocatalytic materials. Background technique [0002] Bismuth molybdate (Bi 2 MoO 6 ), is determined by [Bi 2 O 2 ] 2+ Layer inclusions in MoO 4 2- The layered Aurigillius oxide formed between layers, due to its unique forbidden band width (E g =2.5-2.8eV), and can absorb visible light in the range of 400-500nm to become a photocatalyst with great application prospects. However, like other single semiconductor photocatalysts, bismuth molybdate has a low quantum yield due to the high recombination rate of photogenerated electrons and holes, which is still a challenge to meet the needs of practical applications. For this reason, Nanoscale, 2013, 5: 6307-6310, reported Bi 2 MoO 6 / RGO photocatalyst, the prepared semiconductor heterostructure bismuth molybdate p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J31/34B01J35/06C02F1/30
CPCC02F1/30B01J31/34C02F2305/10B01J2531/0213B01J2531/16B01J35/58B01J35/39
Inventor 卢启芳王钦宇赵婕姚林兵孙科郭恩言魏明志
Owner 南通光烁通信设备有限公司
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