CAS OpenIR  > 中科院上海应用物理研究所2011-2019年
The application of chromium substituted magnetite as heterogeneous Fenton catalyst for the degradation of aqueous cationic and anionic dyes
Liang, XL; Zhong, YH; He, HP; Yuan, P; Zhu, JX; Zhu, SY; Jiang, Z(姜政)
2012
Source PublicationCHEMICAL ENGINEERING JOURNAL
ISSN1385-8947
Volume191
AbstractIn this study, the heterogeneous Fenton degradation of cationic and anionic dyes catalyzed by a series of Cr-containing magnetites (Fe3-xCrxO4, x=0.00, 0.18, 0.33, 0.47 and 0.67) has been investigated under neutral pH conditions. Methylene blue (MB) and acid orange II (AOII) were chosen as models of cationic and anionic contaminants. Emphases were laid on the comparison of degradation characteristic between MB and AOII and the effect of Cr substitution on the degradation efficiency of both dyes. The octahedral occupancy of Cr3+ increased the BET surface area and superficial hydroxyl amount of magnetite, resulting in an improvement of adsorption ability of MB. However, these Cr-containing magnetites showed no adsorption to AOII. The MB degradation, following the Langmuir-Hinshelwood model, was well fitted by zero-order equation while AOII degradation following the Eley-Rideal model, was well fitted with two-stage pseudo-first-order kinetics. The Cr incorporation significantly improved the catalytic activity of magnetite in heterogeneous Fenton reaction, but the extent of improvement varied with the substitution level. These new insights are of high importance for the environmental application of metal substituted magnetites in the purification of textile wastewater. (C) 2012 Elsevier B.V. All rights reserved.
Language英语
Funding Project应物所项目组
WOS IDWOS:000304793300021
Citation statistics
Cited Times:82[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.sinap.ac.cn/handle/331007/13311
Collection中科院上海应用物理研究所2011-2019年
Recommended Citation
GB/T 7714
Liang, XL,Zhong, YH,He, HP,et al. The application of chromium substituted magnetite as heterogeneous Fenton catalyst for the degradation of aqueous cationic and anionic dyes[J]. CHEMICAL ENGINEERING JOURNAL,2012,191.
APA Liang, XL.,Zhong, YH.,He, HP.,Yuan, P.,Zhu, JX.,...&Jiang, Z.(2012).The application of chromium substituted magnetite as heterogeneous Fenton catalyst for the degradation of aqueous cationic and anionic dyes.CHEMICAL ENGINEERING JOURNAL,191.
MLA Liang, XL,et al."The application of chromium substituted magnetite as heterogeneous Fenton catalyst for the degradation of aqueous cationic and anionic dyes".CHEMICAL ENGINEERING JOURNAL 191(2012).
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