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Copper phthalocyanine/gamma-bismuth molybdate composite nanofiber photocatalytic material and preparation method and application thereof

A technology of composite nanofibers and photocatalytic materials, which is applied in the field of photocatalytic materials, can solve the problems of difficult recycling and reuse, high application cost, unfavorable transmission and separation of photogenerated carriers, and achieve improved photocatalytic efficiency, favorable transmission and Effect of separation and enhancement of photocatalytic efficiency

Active Publication Date: 2017-07-21
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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  • Copper phthalocyanine/gamma-bismuth molybdate composite nanofiber photocatalytic material and preparation method and application thereof
  • Copper phthalocyanine/gamma-bismuth molybdate composite nanofiber photocatalytic material and preparation method and application thereof
  • Copper phthalocyanine/gamma-bismuth molybdate composite nanofiber photocatalytic material and preparation method and application thereof

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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, comprising the following steps:

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

Embodiment 2

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

[0071] (1) Preparation of spinnable precursor sol: at room temperature, dissolve 2.5g of citric acid into 20ml of deionized water, stir until dissolved; then add 0.442g of ammonium molybdate and 2.425g of bismuth nitrate pentahydrate to the above To the solution, 3 ml of concentrated hydrochloric acid with a mass fraction of 37% was added, and a clear and transparent solution B was obtained after stirring at room temperature for 1 h. Add 2ml of solution B and 1.0ml of concentrated hydrochloric acid with a mass fraction of 37% into 10ml of absolute ethanol, and mix uniformly 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, the spinnable precursor sol was obtained.

[0072] (2) Preparation of γ-bismuth molybdate ...

Embodiment 3

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

[0078] (1) Preparation of spinnable precursor sol: at room temperature, dissolve 2g of citric acid into 16ml of deionized water, stir until dissolved; then add 0.353g of ammonium molybdate and 1.94g of bismuth nitrate pentahydrate to the above solution 2 ml of concentrated hydrochloric acid with a mass fraction of 37% was added, and a clear and transparent solution B was obtained after stirring at room temperature for 4 h. Add 2ml of solution B and 2.0ml of concentrated hydrochloric acid with a mass fraction of 37% 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, and After stirring for 24 hours, the spinnable precursor sol was obtained.

[0079] (2) Preparation of γ-bismuth molybdate nanofibers: transfer the spinnable precurs...

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Abstract

The invention provides a copper phthalocyanine / gamma-bismuth molybdate composite nanofiber photocatalytic material and a preparation method and application thereof. The preparation method includes preparing a spinnable precursor solution mainly from ammonium molybdate, bismuth nitrate pentahydrate, citric acid, inorganic acid and polyvinylpyrrolidone, preparing the spinnable precursor solution into gelatinous fibers through an electrospinning technique, and conducting calcination treatment to obtain gamma-bismuth molybdate nanofibers; loading copper phthalocyanine onto the surfaces of the gamma-bismuth molybdate nanofibers through a solvothermal method so as to obtain the copper phthalocyanine / gamma-bismuth molybdate composite nanofiber photocatalytic material. The copper phthalocyanine / gamma-bismuth molybdate composite nanofiber photocatalytic material is high in photocatalytic activity and recyclable, and the application cost is reduced greatly.

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, belonging to the technical field of photocatalytic materials. Background technique [0002] Bismuth molybdate (Bi 2 MoO 6 ), by [Bi 2 o 2 ] 2+ layer inclusions in MoO 4 2- Layered Aurivillius oxides composed of interlayers, due to their unique band gap (E g =2.5-2.8eV), and can absorb visible light with a wavelength in the range of 400-500nm and 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 molyb...

Claims

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Application Information

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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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