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Sodium alginate-phosphorus phthalocyanine photosensitizer and photocatalytic composite material, and preparation methods and application thereof

A technology of sodium alginate and composite material, applied in the field of photocatalytic materials, can solve the problems of ineffective adsorption of lead and mercury, low photosensitization efficiency, poor stable state, etc., and achieves improved photosensitization efficiency, simple synthesis route and low cost Effect

Active Publication Date: 2021-02-05
青岛斯八达分析测试有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problems of poor photocatalyst structural stability, low photosensitization efficiency and inability to effectively adsorb heavy metal pollutants such as lead and mercury in the prior art, the present invention provides a sodium alginate-phthalocyanine photosensitizer

Method used

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  • Sodium alginate-phosphorus phthalocyanine photosensitizer and photocatalytic composite material, and preparation methods and application thereof
  • Sodium alginate-phosphorus phthalocyanine photosensitizer and photocatalytic composite material, and preparation methods and application thereof
  • Sodium alginate-phosphorus phthalocyanine photosensitizer and photocatalytic composite material, and preparation methods and application thereof

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Embodiment 1

[0024] Embodiment 1 sodium alginate-phosphorus phthalocyanine photosensitizer and preparation method thereof

[0025] Sodium alginate-type phthalocyanine photosensitizer, the photosensitizer is a sodium alginate-phosphorus phthalocyanine binary molecular photosensitizer linked by chemical bond ester groups between phosphorus phthalocyanine and sodium alginate; the binary molecule photosensitizer The structural formula is as follows:

[0026]

[0027] Wherein, R is COOH or H, and the degree of polymerization n=100-10000.

[0028] The preparation method of the sodium alginate-phosphorus phthalocyanine binary molecular photosensitizer is as follows:

[0029] Trimellitic anhydride, metal lithium strips are melted and reacted in urea (the molar ratio of the three is 2:1:20) for 4h, adding mole fraction is 0.1% ammonium molybdate as a catalyst, reactant is dissolved in 15% NaOH after reaction cooling, Release excess ammonia, then filter, the filtrate is acidified to pH1 with HC...

Embodiment 2

[0030] The preparation method of embodiment 2 sodium alginate-phosphorus phthalocyanine photosensitizer

[0031]Trimellitic anhydride, metal lithium strips are melted and reacted in urea (the molar ratio of the three is 2.5:1:20) for 6h, adding mole fraction is 0.5% ammonium molybdate as a catalyst, reactant is dissolved in 15% NaOH after cooling, Release excess ammonia, then filter, the filtrate is acidified to pH1 with HCl, stir 2h, separate out tetracarboxy metal-free phthalocyanine, the reaction yield is about 85%; Tetracarboxy metal-free phthalocyanine and phosphorus tribromide (both moles Ratio 1:1.2) Reflux in pyridine solvent for 8h. After the reaction is over, use lye to destroy excess phosphorus tribromide and dissolve carboxylphosphorus phthalocyanine. After filtering, acidify the filtrate to pH1 with HCl to make tetracarboxyphosphorus Phthalocyanines are precipitated, and the reaction yield is about 70%; sodium alginate (G / M ratio 1:3, molecular weight 20KDa) and 0...

Embodiment 3

[0032] The preparation method of embodiment 3 sodium alginate-phosphorus phthalocyanine photosensitizer

[0033] Pyromellitic acid, metal lithium strips were melted and reacted in urea (the molar ratio of the three: 3:1:20) for 8 hours, and ammonium molybdate with a mole fraction of 1% was added as a catalyst. After the reaction was cooled, the reactant was dissolved in 15% In NaOH, release excess ammonia, then filter, acidify the filtrate to pH1 with HCl, stir for 2h, and precipitate octacarboxy metal-free phthalocyanine, the reaction yield is about 70%; octacarboxy metal-free phthalocyanine and phosphorus tribromide (The molar ratio of the two is 1:1.5) Reflux in pyridine solvent for 10h. After the reaction, use lye to destroy excess phosphorus tribromide and dissolve carboxylphosphorus phthalocyanine. After filtering, acidify the filtrate to pH1 with HCl , so that octacarboxyphosphorus phthalocyanine is precipitated, and the reaction yield is about 60%; sodium alginate (G / M...

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Abstract

The invention belongs to the technical field of photocatalytic materials, and discloses a sodium alginate phthalocyanine photosensitizer, a photocatalytic composite material and a preparation method and application thereof. The photosensitizer is a sodium alginate-phosphorus phthalocyanine binary molecule photosensitizer formed by connecting phosphorus phthalocyanine and sodium alginate through achemical bond ester group, and the sodium alginate-phosphorus phthalocyanine binary molecule photosensitizer and polybutylene-aramid fibers interact with each other to prepare the polybutylene-aramidfiber photocatalytic composite material. The composite material provided by the invention is low in cost; a synthetic route of phosphorus phthalocyanine is simple, yield is high, and raw materials areenvironmentally friendly; and the photosensitizer and the photocatalytic material can adsorb inorganic heavy metal ions by utilizing the characteristics of sodium alginate gel while photodegrading organic pollutants.

Description

technical field [0001] The invention belongs to the technical field of photocatalytic materials, and in particular relates to a sodium alginate-phthalocyanine-like photosensitizer, a photocatalytic composite material and a preparation method and application thereof. Background technique [0002] In January 2018, the Panamanian oil tanker Sanchi collided east of the Yangtze River Estuary, causing nearly 100,000 tons of light oil to leak into the East China Sea. In November 2018, carbon 9 petrochemical products occurred at the Donggang Petrochemical Wharf in Quangang District, Quanzhou. Leakage accidents, with a leakage volume of nearly 700 tons, these marine pollution accidents have caused serious harm to the ecological environment. In order to cope with the increasingly severe marine pollution accidents, the development of nanomaterials as photocatalysts to photodegrade pollutants under natural light sources is a suitable method for pollutant disposal in natural water bodies...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08B37/04B01J31/06C02F1/30C02F1/28C02F101/20C02F101/30
CPCC08B37/0084B01J31/06C02F1/30C02F1/286C02F2101/20C02F2101/30C02F2101/36C02F2101/32B01J35/39
Inventor 赵澎王发合申培丽王文静吕海金
Owner 青岛斯八达分析测试有限公司
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