Synthesis of magnetically separable MnFe<sub>2</sub>O<sub>4</sub> nanocrystals via salt-assisted solution combustion method and their utilization as dye adsorbent
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- ZHONG Xiaochao
- Department of Chemistry, Jinan University
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- YANG Jun
- Department of Chemistry, Jinan University
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- CHEN Yuanyuan
- Department of Chemistry, Jinan University
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- QIU Xiaoyan
- Department of Chemistry, Jinan University
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- ZHANG Yuanming
- Department of Chemistry, Jinan University
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説明
MnFe2O4 nanocrystals with spinel structure were prepared by conventional solution combustion synthesis and salt-assisted solution combustion synthesis, respectively, and their adsorption capacities for Congo red (CR) were also investigated. The results showed that the MnFe2O4 nanocrystals prepared with KCl salt (K-MFO) exhibited much better adsorption capacity for CR than those prepared without KCl (MFO), because the introduction of KCl into the solution combustion synthesis process results in an obvious dispersion and increment of surface area in the obtained MnFe2O4 particles. Meanwhile, the MnFe2O4 nanocrystals exhibited a clearly ferromagnetic behavior under applied magnetic field, which allowed their high-efficient magnetic separation from wastewater. The adsorption ratio of MnFe2O4 nanocrystals prepared with a KCl/M ratio of 2/3 (K-MFO-c) for CR still reached 81% after 5 cycles. By the calculation of Langmuir model, the maximum monolayer adsorption capacity (qm) of K-MFO-c is 118.76 mg/g and much higher than that of MFO (30.00 mg/g), which must be associated with the higher surface area of K-MFO-c.
収録刊行物
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- Journal of the Ceramic Society of Japan
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Journal of the Ceramic Society of Japan 123 (1437), 394-398, 2015
公益社団法人 日本セラミックス協会
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詳細情報 詳細情報について
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- CRID
- 1390001205287716096
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- NII論文ID
- 130005068640
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- ISSN
- 13486535
- 18820743
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- 本文言語コード
- ja
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- データソース種別
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- JaLC
- Crossref
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可