Synthesis and Photocatalytic Performance of CeO2/γ-Al2O3 Composite

被引：0

作者：

Li G. ^{[1
]}

Ning D. ^{[1
,2
]}

Liu X. ^{[1
]}

Yang S. ^{[1
]}

Long A. ^{[1
]}

Huang B. ^{[1
]}

Lan Y. ^{[1
,2
]}

机构：

[1] College of Materials and Metallurgy, Guizhou University, Guiyang

[2] Guizhou Province Key Laboratory of Metallurgical Engineering and Process Energy Saving, Guiyang

来源：

Zhongguo Xitu Xuebao/Journal of the Chinese Rare Earth Society | 2023年 / 41卷 / 04期

关键词：

CeO[!sub]2[!/sub; composite; photocatalysis; precipitation method; γ-Al[!sub]2[!/sub]O[!sub]3[!/sub;

D O I：

10.11785/S1000-4343.20230407

中图分类号：

学科分类号：

摘要：

A mesoporous CeO2/γ-Al2O3 photocatalyst was prepared successfully by precipitation method using Ce（NO3）3·6H2O and Al （NO3）3·9H2O as raw materials with NH4HCO3 as pore forming agent. Photocatalytic performance of CeO2/γ-Al2O3 samples under different NH∶4 Al and Ce∶Al molar ratios was studied. The photocatalytic result shows that the as-prepared CeO2/γ-Al2O3 has excellent photocatalytic activity，and the best molar ratios of NH4∶Al and Ce∶Al are 1 and 0.2，respectively. This sample has a BET surface area of 94.4642 m2∙g-1 and a pore diameter of 5.8565 nm，and can reach at a 93.59% photodegradation ratio to Methylene blue（MB）under this condition while its kinetic constant k is 0.0218 min-1. This study offers a novel idea and method for syntheszing high-performance Al-Ce composite catalyst. © 2023 Chinese Society of Rare Earths. All rights reserved.

引用

页码：717 / 724

页数：7

共 44 条

[1] Wang S H, Yang Z F, Wang Z J, Zhu Z H, Huang X B., Existing state of rare earth in mid-deep weak magnetic tailings in Bayan Obo mine［J］, Journal of the Chinese Society of Rare Earths, 38, 1, (2020)
[2] Wang C X, Shi H, Qiu X Y，, Hu Z., Difference in flotation behavior between fine-grained bastnaesite and barite［J］, Journal of the Chinese Society of Rare Earths, 38, 6, (2020)
[3] Zhang Z X，, Liu T，, Lan Y P，, Gu X Y，, Mao X S, Xia X W, Jiang L Z., Morphology control of cerium carbonate and its thermal decomposition toprepare CeO2［J］, Journal of the Chinese Society of Rare Earths, 38, 5, (2020)
[4] Liu Y, Gong Q H, Zhou G W., Progress in preparation and application of CeO2-based nanocomposites with different morphologies ［J］, Materials Reports, 33, S2, (2019)
[5] Mao X S, Xia X W，, Lan Y P，, Jiang L Z，, Jiang X Y, Tian X Y., In situ study of CeO2 crystal structure during heating in different atmospheres［J］, Journal of the Chinese Society of Rare Earths, 38, 4, (2020)
[6] Dai H W, Wang Y F, Yan P X, Han F X., Preparation and characterization of CeO2/fibrous sepiolite Co-modified fluorine rubber composites［J］, Journal of the Chinese Society of Rare Earths, 36, (2018)
[7] Shen C H, Wen X J, Fei Z H, Liu Z Y., Visible-light-driven activation of peroxymonosulfate for accelerating ciprofloxacin degradation using CeO2/Co3O4 p-n hetero-junctionphotocatalysts［J］, Chem. Eng. J, 391, (2020)
[8] Lan Y P，, Sohn H Y，, Mohassab Y，, Liu Q C, Xu B Q., Properties of stable nonstoichiometric nanoceria produced by thermal plasma［J］, J. Nanopart. Res, 19, 8, (2017)
[9] Sun J, Guo Y C, Xiao Y T, Lu Z B, Li J, Yang L N., Research progress of photocatalytic oxidation catalyst carrier ［J］, Petrochemical Technology, 50, 1, (2021)
[10] Dhara A, Sain S, Sadhukhan P，, Sachindranath D, Swapan K P., Effect of lattice distortion in optical properties of CeO2 nanocrystals on Mn substitution by mechanical alloying［J］, J. Alloys Compd, 786, (2019)

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