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Solvothermal synthesis of mesoporous magnetite nanoparticles for Cr(IV) ions uptake and microwave absorption
Shen, Peng1; Zhang, Haitao1; Zhang, Suojiang1; Yuan, Pei1; Yang, Yang2; Zhang, Qiang3; Zhang, Xixiang3
AbstractColloidal mesoporous magnetite nanoparticles with tunable porosity were realized by a simple and scalable solvothermal route with the aid of AOT as ligands. AOT was used to induce the anisotropic crystal growth of smaller nanocrystals and restrain their tight aggregation so as to form more mesoscale pores. Morphologies and microstructures investigation by SEM and TEM revealed that the bigger nanoparticles were composed of smaller nanocrystals with an average size of 18 nm. A possible formation mechanism was proposed for the mesoporous nanoparticles. Study of nitrogen adsorption-desorption isotherm revealed that the Brunauer-Emmett-Teller 9BET) specific surface area of mesoporous nanoparticles is up to 209 m(2)/g, resulting from the slit-shaped pores created by the aggregation of polyhedral nanocrystals. Magnetic properties study indicated that the as-prepared nanoparticles are superparamagnetic at room temperature. Optimized mesoporous magnetite nanoparticles exhibit a maximum Cr(VI) ion sorption capacity of 12.9 mmol/g, and its absorption behavior followed a Freundlich model. Microwave absorption study indicated that porous nanoparticles own higher permeability values than that of solid nanoparticles, leading to a higher dielectric loss in the frequency range of 2-18 GHz.
KeywordNanoparticle Magnetic Properties Colloidal Ion Uptake Microwave Absorption
WOS HeadingsScience & Technology ; Physical Sciences ; Technology
Indexed BySCI
WOS Research AreaChemistry ; Science & Technology - Other Topics ; Materials Science
WOS SubjectChemistry, Multidisciplinary ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary
Funding OrganizationNational Natural Science Foundation of China(21271175 ; National Key Basic Research Program of China (or 973 Program)(2014CB239701) ; One Hundred Talent Program (CAS) ; Instrument and Equipment Research and Development Project(YZ201221) ; 21127011)
WOS IDWOS:000376270600003
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Document Type期刊论文
Affiliation1.Chinese Acad Sci, Inst Proc Engn, Key Lab Green Proc & Engn, Beijing Key Lab Ion Liquids Clean Proc, Beijing 100190, Peoples R China
2.China Bldg Mat Acad, State Key Lab Green Bldg Mat, Beijing 100024, Peoples R China
3.King Abdullah Univ Sci & Technol, Phys Sci & Engn, Jeddah 239556900, Saudi Arabia
Recommended Citation
GB/T 7714
Shen, Peng,Zhang, Haitao,Zhang, Suojiang,et al. Solvothermal synthesis of mesoporous magnetite nanoparticles for Cr(IV) ions uptake and microwave absorption[J]. JOURNAL OF NANOPARTICLE RESEARCH,2016,18(5):129.
APA Shen, Peng.,Zhang, Haitao.,Zhang, Suojiang.,Yuan, Pei.,Yang, Yang.,...&Zhang, Xixiang.(2016).Solvothermal synthesis of mesoporous magnetite nanoparticles for Cr(IV) ions uptake and microwave absorption.JOURNAL OF NANOPARTICLE RESEARCH,18(5),129.
MLA Shen, Peng,et al."Solvothermal synthesis of mesoporous magnetite nanoparticles for Cr(IV) ions uptake and microwave absorption".JOURNAL OF NANOPARTICLE RESEARCH 18.5(2016):129.
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