The distinct effects of Mn substitution on the reactivity of magnetite in heterogeneous Fenton reaction and Pb(II) adsorption
Liang, XL; He, ZS; Wei, GL; Liu, P; Zhong, YH; Tan, W; Du, PX; Zhu, JX; He, HP; Zhang, J;张静
刊名JOURNAL OF COLLOID AND INTERFACE SCIENCE
2014
卷号426页码:181-189
关键词Manganese substituted magnetite Heterogeneous Fenton reaction Adsorption Heavy metal EXAFS
学科分类Chemistry
DOI10.1016/j.jcis.2014.03.065
英文摘要In this study, a series of Mn substituted magnetites were synthesized and used in catalyzing the heterogeneous Fenton degradation of acid orange II and Pb(II) adsorption, in order to investigate the effect of Mn substitution on the reactivity of magnetite. The valence and local environment of both Fe and Mn in the spinel structure of magnetite were investigated by X-ray absorption fine structure (XAFS) spectroscopy. The incorporation of Mn did not change the valence and local structure of Fe in the synthetic magnetite, while Mn was in the valences of +2 and +3. The Mn distribution on the octahedral sites of magnetite surface increased with the increase in Mn content. The Mn introduction led to an improvement of catalytic activity of magnetite. The sample with the minimum Mn content displayed the best efficiency in -OH production and the degradation of acid orange II, while the other substituted samples did not show obvious difference in their catalytic performance. The adsorption capacity of magnetite samples toward Pb(II) gradually increased with the increase in Mn content. The above influences of Mn substitution on the reactivity of magnetite were discussed in views of the variations in microstructural environment and physicochemical properties. (C) 2014 Elsevier Inc. All rights reserved.
收录类别SCI
WOS记录号WOS:000337266900024
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被引频次:16[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/225072
专题中国科学院高能物理研究所_多学科研究中心_期刊论文
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Liang, XL,He, ZS,Wei, GL,et al. The distinct effects of Mn substitution on the reactivity of magnetite in heterogeneous Fenton reaction and Pb(II) adsorption[J]. JOURNAL OF COLLOID AND INTERFACE SCIENCE,2014,426:181-189.
APA Liang, XL.,He, ZS.,Wei, GL.,Liu, P.,Zhong, YH.,...&Zhang, J;张静.(2014).The distinct effects of Mn substitution on the reactivity of magnetite in heterogeneous Fenton reaction and Pb(II) adsorption.JOURNAL OF COLLOID AND INTERFACE SCIENCE,426,181-189.
MLA Liang, XL,et al."The distinct effects of Mn substitution on the reactivity of magnetite in heterogeneous Fenton reaction and Pb(II) adsorption".JOURNAL OF COLLOID AND INTERFACE SCIENCE 426(2014):181-189.
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