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Pt/ZnO composite hollow microsphere photocatalysis material and preparation method

A technology of hollow microspheres and reaction raw materials, applied in chemical instruments and methods, physical/chemical process catalysts, chemical/physical processes, etc., can solve the problems of cumbersome preparation process and inability to realize one-step synthesis of Pt/ZnO composite hollow microspheres , to achieve the effect of simple preparation process, good industrial application prospect and easy industrialization

Inactive Publication Date: 2012-10-10
JIANGXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The preparation process of the above method is cumbersome, and it is impossible to realize the one-step synthesis of Pt / ZnO composite hollow microspheres

Method used

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  • Pt/ZnO composite hollow microsphere photocatalysis material and preparation method
  • Pt/ZnO composite hollow microsphere photocatalysis material and preparation method
  • Pt/ZnO composite hollow microsphere photocatalysis material and preparation method

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Experimental program
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Effect test

Embodiment 1

[0040] Add 1 g of polyethylene glycol with a molecular weight of 6,000 to 30 g of ethylene glycol, and stir to dissolve to form a solvent. Then 4.065 g of zinc acetate (Zn(CH 3 COO) 2 2H 2 O) and 0.0199 g of chloroplatinic acid (H 2 PtCl 6 ·6H 2 O) Add the above solvent and stir with a magnetic stirrer for 2 hours, transfer to a hydrothermal reaction kettle and treat at 180°C for 10 hours, cool, centrifuge, rinse with distilled water and ethanol for 3 times, and then dry at 100°C for 12 hours. The corresponding Pt (0.5%) / ZnO composite hollow microsphere photocatalytic material was obtained, and its characteristics and degradation rate are shown in Table 1 to Table 2.

Embodiment 2

[0042] Add 1 g of polyethylene glycol with a molecular weight of 6,000 to 30 g of ethylene glycol, and stir to dissolve to form a solvent. Then 4.065 g of zinc acetate (Zn(CH 3 COO) 2 2H 2 O) and 0.0398 g of chloroplatinic acid (H 2 PtCl 6 ·6H 2 O) Add the above solvent and stir with a magnetic stirrer for 2 hours, transfer to a hydrothermal reaction kettle and treat at 180°C for 10 hours, cool, centrifuge, rinse with distilled water and ethanol for 3 times, and then dry at 100°C for 12 hours. The corresponding Pt (1%) / ZnO composite hollow microsphere photocatalytic material was obtained, and its characteristics and degradation rate are shown in Table 1 to Table 2. The cycle performance is shown in Table 3 to Table 4.

Embodiment 3

[0044] Add 1 g of polyethylene glycol with a molecular weight of 6,000 to 30 g of ethylene glycol, and stir to dissolve to form a solvent. Then 4.065 g of zinc acetate (Zn(CH 3 COO) 2 2H 2 O) and 0.0796 g of chloroplatinic acid (H 2 PtCl 6 ·6H 2 O) Add the above solvent and stir with a magnetic stirrer for 2 hours, transfer to a hydrothermal reaction kettle and treat at 180°C for 10 hours, cool, centrifuge, rinse with distilled water and ethanol for 3 times, and then dry at 100°C for 12 hours. The corresponding Pt (2%) / ZnO composite hollow microsphere photocatalytic material was obtained, and its characteristics and degradation rate are shown in Table 1 to Table 2.

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Abstract

The invention relates to a method for producing Pt / ZnO composite hollow microsphere by a low temperature soft chemistry method. According to the invention, glycol and polyethylene glycol are taken as reaction solvents, zinc acetate(Zn(CH3COO)2.2H2O) and chloroplatinic acid(H2PtCl6.6H2O) are taken as raw materials, platinum is reduced under alcohol heating condition, ZnO nanoparticles are made to the ZnO hollow microsphere, and Pt / ZnO composite hollow microsphere with particle size of 10-40 mum is synthesized by one step. According to the invention, the shape of the ZnO can be conveniently controlled, the method has the advantages of simple preparation technology, mild condition, easy industrialization realization and no pollution on environment. The specific effect of Pt and ZnO can effectively reduce the recombination probability of photoinduced electrons and a cavity pair, and photo-corrosion resistant capability of ZnO can be enhanced simultaneously. The catalysis material can perform photocatalysis and degradation on an organic dye with high efficiency under ultraviolet irradiation, and has good industrial utilization prospect.

Description

technical field [0001] The invention relates to a zinc oxide photocatalyst production technology, in particular to a method for producing a Pt / ZnO composite hollow microsphere photocatalytic material by a low-temperature soft chemical method. The catalytic material can efficiently photocatalytically degrade organic dyes under ultraviolet light irradiation. Background technique [0002] Photocatalytic technology is one of the main ways to solve environmental problems in the future (Zou Zhigang. Photocatalytic materials and solar energy conversion and environmental purification, Functional Material Information 4(2008):17-19). Photocatalysis can be used for photocatalytic degradation and mineralization of various refractory persistent toxic organic pollutants in water and air, as well as antibacterial deodorization and treatment of Hg in wastewater 2+ 、Ag + 、Cr 6+ and other heavy metal ions. Therefore, photocatalytic technology is the research frontier and hotspot in the ...

Claims

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Application Information

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IPC IPC(8): B01J23/60B01J35/08
Inventor 余长林杨凯舒庆张彩霞
Owner JIANGXI UNIV OF SCI & TECH
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