Preparation of magnetic Ni/wollastonite and zeolite P/Ni/wollastonite composite fibers

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• 作者：Jinlong Jiang^a ; ^{jiangjinlong75@163.com} ; Xinyuan Lu^a ; Huan Huang^b ; Chuansong Duanmu^a ; Sumin Zhou^a ; Xu Gu^a ; Jing Chen^a
• 关键词：Magnetic material ; Zeolite P ; Nickel ; wollastonite fiber ; Electroless plating
• 刊名：Applied Surface Science
• 出版年：2012
• 期刊代码：6_01694332
• 类别：ms
• 出版时间：1 August, 2012
• 卷：258
• 期：20
• 页码：8283-8288
• 文件大小：1018 K

摘要

Magnetic composite fibers with wollastonite (WO) core and Ni shell were prepared by electroless plating using natural mineral WO fibers as supporters. Zeolite P layers were then loaded on the surface of Ni/WO fibers by in situ hydrothermal method. The sample structure and properties were characterized via SEM, XRD, SQUID, EDX, and N₂ adsorption. The compact Ni-P coatings on the surface of WO fibers resulted in good magnetic properties of the Ni/WO fibers and zeolite P/Ni/WO fibers. After two crystallization cycles, a continuous zeolite P layer could be formed on the surface of Ni-P coating. The zeolite loading improved the stability of Ni-P coating in the acid solution, resulting in that the zeolite P/Ni/WO fibers can be used at a wide pH range of 3-7. Zeolite P/Ni/WO fiber exhibited a good sorption property for Cu²⁺ in the aqueous solution (12.48 mg/g) and could be reused after regeneration, indicating that it could be an effective and reusable adsorbent for metal ions from a liquid system.