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Application of cerium hydrogen iodate tetrahydrate

A technology of tetrahydrate and iodic acid is applied in the field of environmental pollution control and achieves the effects of simple preparation method, mild preparation conditions and high durability

Inactive Publication Date: 2020-03-17
CHONGQING THREE GORGES UNIV
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  • Summary
  • 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 reported in the literature, there are no patents and literature reports on CeHIO. 6 • 4H 2 Applied research on O, especially its application as a catalyst

Method used

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  • Application of cerium hydrogen iodate tetrahydrate
  • Application of cerium hydrogen iodate tetrahydrate
  • Application of cerium hydrogen iodate tetrahydrate

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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 ), 0.2 mL of concentrated nitric acid were dissolved in 35 mL of deionized water to obtain ceric ammonium nitrate solution. 0.57 g (2.5 mmol) of periodic acid (H 5 IO 6 ) was dissolved in 15 mL of deionized water to obtain a periodic acid solution. At room temperature, in the process of stirring the ammonium cerium nitrate solution, the periodate solution was added dropwise to the ammonium cerium 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), after centrifugation, placed at 60 o C oven dried for 12 h to obtain CeHIO 6 4H 2 O samples.

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

[0025] from figure 1 The SEM image shows that CeHIO 6 4H 2 O samples have random morphology with a size of 0.5–10 nm. fi...

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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) compound as a novel catalyst in 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 is constantly expanding. The large amount of organic dye pollutants discharged by this industry has become an important source of water pollution in the world. Semiconductor photocatalysis technology can directly use sunlight to efficiently oxidize and degrade dye pollutants at room temperature. Therefore, it is a favorable way to control environmental pollution by making full use of sunlight to degrade dye pollutants through photocatalytic technology. Because ultraviolet light only accounts for about 4% of the total energy of sunlight, while visible light accounts for about 46%, so the key to utilizing solar e...

Claims

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Application Information

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Patent Type & Authority Patents(China)
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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