Novel Fe3O4@SiO2@Ag@Ni trepang-like nanocomposites: High-efficiency and magnetic recyclable catalysts for organic dye degradation

doi:10.1088/1674-1056/25/8/088201

中国物理B ›› 2016, Vol. 25 ›› Issue (8): 88201-088201.doi: 10.1088/1674-1056/25/8/088201

• INTERDISCIPLINARY PHYSICS AND RELATED AREAS OF SCIENCE AND TECHNOLOGY • 上一篇下一篇

Novel Fe₃O₄@SiO₂@Ag@Ni trepang-like nanocomposites: High-efficiency and magnetic recyclable catalysts for organic dye degradation

Chao Li(李超), Jun-Jie Sun(孙俊杰), Duo Chen(陈铎), Guang-Bing Han(韩广兵), Shu-Yun Yu(于淑云), Shi-Shou Kang(康仕寿), Liang-Mo Mei(梅良模)

School of Physics and National Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, China

收稿日期:2016-01-13 修回日期:2016-04-17 出版日期:2016-08-05 发布日期:2016-08-05
通讯作者: Shi-Shou Kang E-mail:skang@sdu.edu.cn
基金资助:
Project supported by the National Basic Research Program of China (Grant No. 2015CB921502), the National Natural Science Foundation of China (Grant Nos. 11474184 and 11174183), the 111 Project (Grant No. B13029), and the Fundamental Research Funds of Shandong University, China.

Novel Fe₃O₄@SiO₂@Ag@Ni trepang-like nanocomposites: High-efficiency and magnetic recyclable catalysts for organic dye degradation

Chao Li(李超), Jun-Jie Sun(孙俊杰), Duo Chen(陈铎), Guang-Bing Han(韩广兵), Shu-Yun Yu(于淑云), Shi-Shou Kang(康仕寿), Liang-Mo Mei(梅良模)

School of Physics and National Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, China

Received:2016-01-13 Revised:2016-04-17 Online:2016-08-05 Published:2016-08-05
Contact: Shi-Shou Kang E-mail:skang@sdu.edu.cn
Supported by:
Project supported by the National Basic Research Program of China (Grant No. 2015CB921502), the National Natural Science Foundation of China (Grant Nos. 11474184 and 11174183), the 111 Project (Grant No. B13029), and the Fundamental Research Funds of Shandong University, China.

摘要/Abstract

摘要： A facile step-by-step approach is developed for synthesizing the high-efficiency and magnetic recyclable Fe₃O₄@SiO₂@Ag@Ni trepang-like nanocomposites. This method involves coating Fe₂O₃ nanorods with a uniform silica layer, reduction in 10% H₂/Ar atmosphere to transform the Fe₂O₃ into magnetic Fe₃O₄, and finally depositing Ag@Ni core-shell nanoparticles on the L-lysine modified surface of Fe₃O₄@SiO₂ nanorods. The fabricated nanocomposites are further characterized by x-ray diffraction, transmission electron microscopy, scanning electron microscope, Fourier transform infrared spectroscopy, and inductively coupled plasma mass spectroscopy. The Fe₃O₄@SiO₂@Ag@Ni trepang-like nanocomposites exhibit remarkably higher catalytic efficiency than monometallic Fe₃O₄@SiO₂@Ag nanocomposites toward the degradation of Rhodamine B (RhB) at room temperature, and maintain superior catalytic activity even after six cycles. In addition, these samples could be easily separated from the catalytic system by an external magnet and reused, which shows great potential applications in treating waste water.

关键词: trepang-like nanocomposites, core-shell nanoparticles, catalytic property, magnetic property

Abstract: A facile step-by-step approach is developed for synthesizing the high-efficiency and magnetic recyclable Fe₃O₄@SiO₂@Ag@Ni trepang-like nanocomposites. This method involves coating Fe₂O₃ nanorods with a uniform silica layer, reduction in 10% H₂/Ar atmosphere to transform the Fe₂O₃ into magnetic Fe₃O₄, and finally depositing Ag@Ni core-shell nanoparticles on the L-lysine modified surface of Fe₃O₄@SiO₂ nanorods. The fabricated nanocomposites are further characterized by x-ray diffraction, transmission electron microscopy, scanning electron microscope, Fourier transform infrared spectroscopy, and inductively coupled plasma mass spectroscopy. The Fe₃O₄@SiO₂@Ag@Ni trepang-like nanocomposites exhibit remarkably higher catalytic efficiency than monometallic Fe₃O₄@SiO₂@Ag nanocomposites toward the degradation of Rhodamine B (RhB) at room temperature, and maintain superior catalytic activity even after six cycles. In addition, these samples could be easily separated from the catalytic system by an external magnet and reused, which shows great potential applications in treating waste water.

Key words: trepang-like nanocomposites, core-shell nanoparticles, catalytic property, magnetic property

中图分类号: (Surface and interface chemistry; heterogeneous catalysis at surfaces)

82.65.+r

81.20.-n (Methods of materials synthesis and materials processing) 68.43.-h (Chemisorption/physisorption: adsorbates on surfaces)

李超, 孙俊杰, 陈铎, 韩广兵, 于淑云, 康仕寿, 梅良模. Novel Fe₃O₄@SiO₂@Ag@Ni trepang-like nanocomposites: High-efficiency and magnetic recyclable catalysts for organic dye degradation[J]. 中国物理B, 2016, 25(8): 88201-088201.

Chao Li(李超), Jun-Jie Sun(孙俊杰), Duo Chen(陈铎), Guang-Bing Han(韩广兵), Shu-Yun Yu(于淑云), Shi-Shou Kang(康仕寿), Liang-Mo Mei(梅良模). Novel Fe₃O₄@SiO₂@Ag@Ni trepang-like nanocomposites: High-efficiency and magnetic recyclable catalysts for organic dye degradation[J]. Chin. Phys. B, 2016, 25(8): 88201-088201.

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Novel Fe₃O₄@SiO₂@Ag@Ni trepang-like nanocomposites: High-efficiency and magnetic recyclable catalysts for organic dye degradation

Novel Fe₃O₄@SiO₂@Ag@Ni trepang-like nanocomposites: High-efficiency and magnetic recyclable catalysts for organic dye degradation

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