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题名: Synthesis, Characterization, and Catalytic Applications of Core-Shell Magnetic Carbonaceous Nanocomposites
作者: Jin, Changzi1, 2;  Wang, Yanjie2;  Tang, Hailian2;  Wei, Haisheng2;  Liu, Xin1, 2;  Wang, Junhu1, 2
刊名: JOURNAL OF PHYSICAL CHEMISTRY C
发表日期: 2014-10-30
DOI: 10.1021/jp508853a
卷: 118, 期:43, 页:25110-25117
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences ;  Technology
类目[WOS]: Chemistry, Physical ;  Nanoscience & Nanotechnology ;  Materials Science, Multidisciplinary
研究领域[WOS]: Chemistry ;  Science & Technology - Other Topics ;  Materials Science
英文摘要: Magnetic resorcinol/formaldehyde resin (RF) and silica/RF nanocomposites with well-defined coreshell architecture and tunable structural parameters had been prepared via the extended Stober method. The carbon counterparts with similar structure and morphology can be obtained by thermal-treating the polymer precursors under N-2 atmosphere. The prepared materials were characterized by X-ray diffraction, transmission electron microscopy, scanning electron microscopy, Mossbauer spectroscopy, N-2 physical adsorption/desorption, and thermogravimetric analysis. The catalytic applications of the synthesized magnetic nanocomposites were also explored. It has been shown that the magnetite core was oxidized to gamma-Fe2O3 during polymer coating process and further reduced to original Fe3O4 phase during carbonization. In addition, the iron oxide core can react with the shell when carbonization temperature reaches 700 degrees C. The structural stability of magnetic silica/RF is superior to magnetic RF because of the existence of an inner silica shell. Through a simple depositionprecipitate method, active platinum nanoparticles can be loaded in high dispersity onto the surface of the nanocomposites. The constructed magnetic catalysts are very active in hydrogenation of nitroarenes to corresponding amines and can be separated facilely with an external magnetic field.
关键词[WOS]: RESORCINOL-FORMALDEHYDE RESIN ;  LITHIUM-ION BATTERIES ;  IRON-OXIDE NANOPARTICLES ;  STOBER METHOD ;  BIOMEDICAL APPLICATIONS ;  SILICA SHELL ;  AT-CARBON ;  MICROSPHERES ;  SPHERES ;  NANOSTRUCTURES
语种: 英语
WOS记录号: WOS:000344135500036
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/145924
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Chinese Acad Sci, Dalian Inst Chem Phys, Mossbauer Effect Data Ctr, Dalian 116023, Peoples R China
2.Chinese Acad Sci, Dalian Inst Chem Phys, Lab Catalysts & New Mat Aerosp, Dalian 116023, Peoples R China

Recommended Citation:
Jin, Changzi,Wang, Yanjie,Tang, Hailian,et al. Synthesis, Characterization, and Catalytic Applications of Core-Shell Magnetic Carbonaceous Nanocomposites[J]. JOURNAL OF PHYSICAL CHEMISTRY C,2014,118(43):25110-25117.
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