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Preparation method of CeO2 (at) C (at) CuO (at) Cu2O

A preparation process, a certain amount of technology, applied in chemical instruments and methods, water/sludge/sewage treatment, metal/metal oxide/metal hydroxide catalysts, etc.

Pending Publication Date: 2022-07-29
ZHEJIANG NORMAL UNIV XINGZHI COLLEGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0010] So far, there are no relevant patents and literature reports using Ce(OH) 3 Adsorb related acid dyes, and then use acid dyes to adsorb copper ions to form Ce(OH) 3 @acid dye @Cu 2+ Precursors, to synthesize CeO by calcination in an inert gas 2 @C@CuO@Cu 2 O, forming a synergistic effect to improve the photocatalytic degradation efficiency

Method used

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  • Preparation method of CeO2 (at) C (at) CuO (at) Cu2O

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Embodiment 1

[0030] At room temperature, 0.5 g of Ce(NO 3 ) 3 ·6H 2 O was completely dissolved in 10 mL of deionized water, and a certain volume of NaOH solution with a concentration of 0.1 mol / L was slowly added dropwise to make Ce 3+ Complete precipitation as Ce(OH) 3 , continue to stir the reaction system after 40 minutes, add the acid green A of 0.015g (molecular formula is C 37 H 34 N 2 Na 2 O 9 S 3 ) dye, magnetic stirring for 60 minutes and then stand for 30 minutes; to the above system, add 0.005g of copper salt, after stirring for 60 minutes, leave standstill for 45 minutes, the mixed solution is transferred to the autoclave with polytetrafluoroethylene lining, After 8 hours of water heating in a constant temperature blast drying oven at 110°C, the precursor was filtered, dried and ground to obtain the precursor; the precursor was treated under helium at 500°C for 3 hours to obtain CeO 2 @C@CuO@Cu 2 O material.

Embodiment 2

[0032] At room temperature, 0.5 g of Ce(NO 3 ) 3 ·6H 2 O was completely dissolved in 40 mL of deionized water, and a certain volume of NaOH solution with a concentration of 0.3 mol / L was slowly added dropwise to make Ce 3+ Complete precipitation as Ce(OH) 3 , continue to stir the reaction system after 70 minutes, add the acid green A of 0.025g (molecular formula is C 37 H 34 N 2 Na 2 O 9 S 3 ) dyestuff, magnetic stirring for 90 minutes and then stand for 45 minutes; to the above system, add 0.025g of copper salt, after stirring for 70 minutes, leave standstill for 50 minutes, the mixed solution is transferred to the autoclave with polytetrafluoroethylene lining, After 10 hours of water heating in a constant temperature blast drying oven at 130°C, the precursor was filtered, dried and ground to obtain the precursor; the precursor was treated under helium at 600°C for 4 hours to obtain CeO 2 @C@CuO@Cu 2 O material.

Embodiment 3

[0034] At room temperature, 0.5 g of Ce(NO 3 ) 3 ·6H 2 O was completely dissolved in 75 mL of deionized water, and a certain volume of NaOH solution with a concentration of 0.5 mol / L was slowly added dropwise to make Ce 3+ Complete precipitation as Ce(OH) 3 , continue to stir the reaction system after 90 minutes, add the acid green A of 0.04g (molecular formula is C 37 H 34 N 2 Na 2 O 9 S 3 ) dye, magnetic stirring for 120 minutes and standing for 60 minutes; adding 0.05g of copper salt to the above system, stirring for 90 minutes, leaving standstill for 60 minutes, the mixed solution was transferred to the autoclave with polytetrafluoroethylene lining, After 12 hours of water heating in a constant temperature blast drying oven at 150°C, the precursor was filtered, dried and ground to obtain the precursor; the precursor was treated under helium at 750°C for 5 hours to obtain CeO 2 @C@CuO@Cu 2 O material.

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Abstract

The invention relates to a preparation method of CeO2 (at) C (at) CuO (at) Cu2O, which comprises the following steps: firstly, dissolving a certain amount of Ce (NO3) 3.6 H2O in deionized water, then adding a sodium hydroxide solution to obtain Ce (OH) 3, continuously stirring for a certain time, then adding a certain amount of acid dye, stirring, standing for a period of time, then adding a certain amount of copper salt, continuously stirring and standing for a period of time; transferring a standing product into a drying oven, carrying out hydrothermal treatment for a period of time, filtering and drying to obtain a precursor; and performing high-temperature treatment on the precursor for a period of time under the protection of inert gas to obtain the CeO2 (at) C (at) CuO (at) Cu2O material.

Description

technical field [0001] The invention belongs to the technical field of composite oxide preparation, in particular to a CeO 2 @C@CuO@Cu 2 The preparation method of O. Background technique [0002] With the rapid development of the textile industry, the use of dyes is increasing, resulting in water and soil pollution. Studies have shown that excessive heavy metal ions can often be detected in dye pollutants (Zhang R, Zhou T X, Peng H W etal. J. Membr. Sci., 2019, 580: 117-124), which leads to more toxic effects of such substances. big. Therefore, the development and utilization of dyes and heavy metal ions in wastewater, and the synthesis of related materials for the removal of organic pollutants are of great significance for sustainable economic development and creating a good living environment. [0003] At present, chemical degradation, biodegradation and physical adsorption are commonly used to treat dyes and heavy metal ions (Gao XJ, Sun G H, Ge F Y, et al. Inorg. Che...

Claims

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Application Information

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IPC IPC(8): B01J23/83C02F1/30C02F101/30
CPCB01J23/83C02F1/30C02F2305/10C02F2101/308B01J35/39
Inventor 郝仕油肖忠连谭贺云孙巧萍
Owner ZHEJIANG NORMAL UNIV XINGZHI COLLEGE
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