Synthesis and Oxygen Storage Capability of CeO2 Powders for Enhanced Photocatalytic Degradation of Acid Orange 7

Acid Orange 7 (AO7) is one of the most common azo dyes; however, its strong azo bond makes them difficult to biologically degrade. We sought to degrade AO7 dye using CeO2 as a promising alternative photocatalyst. CeO2 powders were synthesized with alternative monoethanolamine (MEA), diethanolamine (...

Full description

Saved in:
Bibliographic Details
Published inInternational journal of photoenergy Vol. 2022; pp. 1 - 9
Main Authors Xu, Yaohui, Deng, Chi, Dong, Changxue, Wang, Qin, Gao, Nunan
Format Journal Article
LanguageEnglish
Published New York Hindawi 17.03.2022
Hindawi Limited
Wiley
Subjects
Adsorption
Catalytic activity
Cerium oxides
Diethanolamine
Dyes
Ethanol
Monoethanolamine (MEA)
Nanocomposites
Orange II
Oxygen
Photocatalysis
Photodegradation
Synthesis
Triethanolamine
Online AccessGet full text

Cover

More Information
Summary:Acid Orange 7 (AO7) is one of the most common azo dyes; however, its strong azo bond makes them difficult to biologically degrade. We sought to degrade AO7 dye using CeO2 as a promising alternative photocatalyst. CeO2 powders were synthesized with alternative monoethanolamine (MEA), diethanolamine (DEA), and triethanolamine (TEA) as a precipitant by solvothermal process combined calcination in air. Compared to the oxygen storage capability of Blank-CeO2 (0.186 mmol O2/g), that of MEA-CeO2 synthesized in the presence of MEA as a precipitant increased by 21.0%, while that of DEA-CeO2 and TEA-CeO2 synthesized in the presence of DEA and TEA as precipitants were decreased. Importantly, such MEA-CeO2 exhibited the highest photocatalytic activity than Blank-, DEA-, and TEA-CeO2 in degradation of AO7 under simulated sunlight illumination, and the removal rate of AO7 by MEA-CeO2 could reach 98.3% within 100 min.
ISSN:1110-662X
1687-529X
DOI:10.1155/2022/8594451