Preparation of porous and hollow Mn2O3 microspheres and their adsorption studies on heavy metal ions from aqueous solutions

Ping Tao; Mihua Shao; Chengwen Song

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Preparation of porous and hollow Mn2O3 microspheres and their adsorption studies on heavy metal ions from aqueous solutions

机译：多孔和空心Mn2O3微球的制备及其对水溶液中重金属离子的吸附研究

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Mn2O3 microspheres are prepared and used as adsorbent for removal of heavy metal ions. Morphology and structure of Mn2O3 microspheres are analyzed by SEM, TEM, XRD, XPS and N2 sorption technique. Effects of adsorbent concentration, ion concentration and agitation time on adsorption behavior are investigated. Adsorption isotherm and kinetics are also studied. The results show Mn2O3 microspheres have well-developed porous and hollow structure, demonstrating good potential on removal of heavy metal ions. Adsorption data fit better with Freundlich isotherms than Langmuir isotherms. Kinetic studies indicate adsorption behavior is described by pseudo-second-order kinetic model, and intra-particle diffusion plays a significant role.

机译：制备了Mn2O3微球并将其用作吸附剂以去除重金属离子。通过SEM，TEM，XRD，XPS和N2吸附技术对Mn2O3微球的形貌和结构进行了分析。研究了吸附剂浓度，离子浓度和搅拌时间对吸附行为的影响。还研究了吸附等温线和动力学。结果表明，Mn2O3微球具有发达的多孔和中空结构，在去除重金属离子方面显示出良好的潜力。 Freundlich等温线比Langmuir等温线更适合吸附数据。动力学研究表明，吸附行为由伪二级动力学模型描述，并且颗粒内扩散起着重要作用。

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《Journal of industrial and engineering chemistry》 |2014年第5期|共6页
作者
Ping Tao; Mihua Shao; Chengwen Song;
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正文语种 eng
中图分类化学工业;
关键词
Preparation; Mn2O3; Removal; Isotherm; Kinetics;

机译：制备;Mn2O3;去除;等温线;动力学;

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1. Preparation of porous and hollow Mn2O3 microspheres and their adsorption studies on heavy metal ions from aqueous solutions [J] . Ping Tao, Mihua Shao, Chengwen Song Journal of industrial and engineering chemistry . 2014,第5期

机译：多孔和空心Mn2O3微球的制备及其对水溶液中重金属离子的吸附研究
2. ZnO hollow microspheres with exposed porous nanosheets surface: Structurally enhanced adsorption towards heavy metal ions [J] . Wang X., Cai W., Liu S., Colloids and Surfaces, A. Physicochemical and Engineering Aspects . 2013,第Null期

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3. Preparation of hollow SiO2 microspheres functionalized with amidoxime groups for highly efficient adsorption of U(VI) from aqueous solution [J] . Dai Ying, Jin Jieyun, Zhou Limin, Journal of Radioanalytical and Nuclear Chemistry: An International Journal Dealing with All Aspects and Applications of Nuclear Chemistry . 2017,第3期

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4. The Adsorption of heavy metal from Aqueous Solutions onto the Porous Biomorphic-genetic Composite of hydroxyapatite/Carbon with Eucalyptus and Bamboo Template [C] . Shuang Cao, Bin Huang, Zongqiang Zhu, International Conference on Civil Engineering and Material Engineering . 2015

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5. Bacterial adsorption of aqueous heavy metals: Molecular simulations and surface complexation models [D] . Johnson, Kelly J. 2006

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Preparation of porous and hollow Mn2O3 microspheres and their adsorption studies on heavy metal ions from aqueous solutions

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