Preparation method of dendritic nanocrystal-loaded ternary alloy nanoparticle photocatalysis material

A technology of alloy nanoparticles and photocatalytic materials, which is applied in the preparation of organic compounds, nano optics, and carbon-based compounds. It can solve the problems of low purity of benzaldehyde, limited application, and reduced catalytic activity, so as to promote oxidation reactions, The effect of reducing the work function and increasing the probability

Active Publication Date: 2017-02-08
海门市创豪工业设计有限公司
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Problems solved by technology

At present, single-phase catalytic materials such as metal gold, platinum, ruthenium, rhodium, copper, etc., and composite catalytic materials composed of metals, titanium dioxide, iron oxide, cerium oxide, etc. The inhibition of functional groups and heterocyclic compounds leads to a decrease in catalytic activity. Therefore, the purity of benzaldehyde produced by benzyl alcohol catalytic oxidation technology is low and contains chlorine, which greatly limits its application in the fields of spices, medicine and food

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  • Preparation method of dendritic nanocrystal-loaded ternary alloy nanoparticle photocatalysis material
  • Preparation method of dendritic nanocrystal-loaded ternary alloy nanoparticle photocatalysis material

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[0022] Preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0023] refer to figure 1 with figure 2 , a preferred embodiment of the present invention provides a dendritic TiO 2 The preparation method of nanocrystal-supported Pt-Ce-Cu alloy nanoparticle benzaldehyde photocatalytic material is carried out in the following steps:

[0024] (1) Preparation of micro-sized ilmenite particles with octadecyltrichlorosilane adhered on the surface: add calcium gluconate to deionized water, heat to 70-90°C, and form calcium gluconate concentration of 10-30g / L Aqueous solution, after cooling the aqueous solution to 30-45°C, add octadecyltrichlorosilane to make the concentration reach 0.5-6g / L as a ball milling fluid for micron ilmenite particles; immerse 40-65g of ilmenite into 1L In the ball milling fluid, heat to 40-60°C, keep warm for 3-5 minutes, take out the ilmenite, and then put the taken-out ilmenite an...

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Abstract

The invention relates to a preparation method of a dendritic TiO2 nanocrystal-loaded Pt-Ce-Cu alloy nanoparticle benzaldehyde photocatalysis material. The preparation method comprises the following steps: preparation of micrometer ilmenite particles with octadecyl trichlorosilane adhered to the surface, preparation of dendritic TiO2 nanocrystal magnetic-assisted precipitate and assembling of Pt-Ce-Cu alloy nanoparticles on the surface of dendritic TiO2 nanocrystal. The prepared dendritic TiO2 nanocrystal-loaded Pt-Ce-Cu alloy nanoparticle material has remarkable selective photocatalysis characteristic for benzyl alcohol catalytic oxidation reaction for production of benzaldehyde.

Description

technical field [0001] The invention relates to the field of catalytic materials for the production of benzaldehyde by catalytic oxidation of benzyl alcohol, in particular to a dendritic TiO 2 The invention discloses a preparation method of a benzaldehyde photocatalytic material supported by nanocrystals of Pt-Ce-Cu alloy nanoparticles. Background technique [0002] Benzaldehyde is an important chemical intermediate for the production of pesticides, printing and dyeing dyes, resins, spices, and antibiotics. At present, single-phase catalytic materials such as metal gold, platinum, ruthenium, rhodium, copper, etc., and composite catalytic materials composed of metals, titanium dioxide, iron oxide, cerium oxide, etc. The inhibition of functional groups and heterocyclic compounds leads to a decrease in catalytic activity. Therefore, the purity of benzaldehyde produced by benzyl alcohol catalytic oxidation technology is low and contains chlorine, which greatly limits its applic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/89C07C45/38C07C47/54B82Y20/00B82Y30/00
CPCB01J23/8926B01J35/004B82Y20/00B82Y30/00C07C45/38C07C47/54
Inventor 赵明陈睿王宇吴伯农
Owner 海门市创豪工业设计有限公司
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