Applications of cerium hydrogen iodate tetrahydrate

A technology of tetrahydration and iodic acid, which is applied in the field of environmental pollution control, achieves high durability, simple preparation method, and is conducive to popularization and application

Inactive Publication Date: 2017-05-31
CHONGQING THREE GORGES UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] CaHIO 6 • 4H 2 O is an inorganic compound containing 4 crystal waters. Although its preparation method and composition identification have been r

Method used

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  • Applications of cerium hydrogen iodate tetrahydrate
  • Applications of cerium hydrogen iodate tetrahydrate
  • Applications of cerium hydrogen iodate tetrahydrate

Examples

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Embodiment 1

[0022] (1) CeHIO 6 ·4H 2 Preparation of O

[0023] 1.37 g (2.5 mmol) cerium ammonium nitrate ((NH 4 ) 2 Ce(NO 3 ) 6 ) and 0.2 mL of concentrated nitric acid were dissolved in 35 mL of deionized water to obtain a solution of ceric ammonium nitrate. Add 0.57 g (2.5 mmol) periodic acid (H 5 IO 6 ) was dissolved in 15 mL of deionized water to obtain a periodic acid solution. At room temperature, while stirring the ceric ammonium nitrate solution, the periodate solution was added dropwise to the ceric ammonium nitrate solution. After the dropwise addition was completed, stirring was continued for 1 h. The obtained precipitate was washed twice with deionized water (50 mL of deionized water each time), centrifuged, and placed at a temperature of 60 o C in an oven for 12 h to obtain CeHIO 6 ·4H 2 O sample.

[0024] (2) CeHIO 6 ·4H 2 Characterization of O

[0025] from figure 1 The SEM image of the CeHIO can be seen 6 ·4H 2 The O samples have a random morphology with...

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Abstract

The present invention discloses applications of cerium hydrogen iodate tetrahydrate (CeHIO6.4H2O), and firstly provides the application example of the compound. According to the present invention, the cerium hydrogen iodate tetrahydrate adopted as a catalyst can degrade organic dye contaminants at a room temperature under a completely dark condition; the methyl orange (MO) dye catalytic degradation activity of CeOIO6.4H2O under a completely dark condition is significantly higher than the methyl orange (MO) dye catalytic degradation activity of commercial titanium dioxide (P25) photocatalysts under visible light irradiation; CeHIO6.4H2O is highly durable, wherein the activity is not significantly reduced after CeHIO6.4H2O is recycled 3 times in the MO degradation experiment; when the CeHIO6.4H2O performs the catalytic degradation of dyes, the characteristics of no requirement of illumination, high activity and high durability are provided; and the preparation method is simple, the preparation condition is mild, and the method is suitable for popularization and application.

Description

technical field [0001] The invention belongs to the technical field of environmental pollution control, and relates to cerium hydrogen iodate tetrahydrate (CeHIO 6 ·4H 2 O) Compounds as a novel catalyst for the degradation of organic dye pollutants. Background technique [0002] With the increase of population, the scale of the printing and dyeing industry in the world continues to expand. A large number of organic dye pollutants discharged from this industry have become an important source of water pollution in the world. Semiconductor photocatalytic technology can directly utilize sunlight to efficiently oxidatively degrade dye pollutants at room temperature. Therefore, through photocatalytic technology, making full use of sunlight to degrade dye pollutants is a favorable way to control environmental pollution. Because ultraviolet light only accounts for about 4% of the total energy of sunlight, while visible light accounts for about 46%, the key to using solar energy i...

Claims

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Application Information

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IPC IPC(8): C02F1/72B01J27/06
Inventor 汤建庭李佳胤黄朋岳明成奋民刘俊成
Owner CHONGQING THREE GORGES UNIV
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