title: Facile fabrication of magnetic nanocomposites of ordered mesoporous carbon decorated with nNickel nanoparticles.
abstract: A magnetic nanocomposite of ordered mesoporous carbon (CMK-3) decorated with nickel nanoparticles was synthesized successfully by a simple chemistry method. Nickel nanoparticles were prepared and uniformly supported on ordered mesoporous carbon CMK-3 by reduction route with CMK-3 as a reducing agent at 673 K. The Ni/CMK-3 composite materials were characterized by powder X-ray diffraction, nitrogen sorption, and transmission electron microscopy. As-prepared nickel nanoparticles supported on CMK-3 were crystalline with a face-center-cubic phase and a size distribution ranging from 10 to 60 nm. The BET special surface area and pore volume of Ni/CMK-3 were as high as 797 m2 g(-1) and 0.72 cm3 g(-1), respectively. The formation mechanism of the nickel nanoparticles outside the surface of CMK-3 was preliminarily discussed. The hysteresis loops of the CMK-3 decorated with nickel nanoparticles were measured by vibrating sample magnetometer (VSM), and the results showed that the composite was ferromagnetism with the saturated magnetization of 15 emu/g, and the coercivity value of 214 Oe. Furthermore, the application of Ni/CMK-3 as magnetically separable adsorbent for vitamin B2 was primarily examined in this study.
authors: Nanomaterials Research Institute, College of Material Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, P. R. China.
authors: Yulin
authors: Y
authors: Cao
authors: Jieming
authors: J
authors: Cao
authors: Mingbo
authors: M
authors: Zheng
authors: Jinsong
authors: J
authors: Liu
authors: Guangbin
authors: G
authors: Ji
authors: Hongmei
authors: H
authors: Ji
mesh_terms: D000327:Adsorption; D002244:Carbon / Q000737:chemistry*; D003460:Crystallization; D008280:Magnetics; D008422:Materials Testing; D046529:Microscopy, Electron, Transmission; D053761:Nanocomposites / Q000737:chemistry* / Q000648:ultrastructure; D053758:Nanoparticles / Q000737:chemistry* / Q000648:ultrastructure; D036103:Nanotechnology / Q000379:methods*; D009532:Nickel / Q000737:chemistry*; D009584:Nitrogen / Q000737:chemistry; D010084:Oxidation-Reduction; D010316:Particle Size; D011060:Poloxalene / Q000737:chemistry; D016062:Porosity; D011208:Powders; D017640:Silicates / Q000737:chemistry; D012822:Silicon Dioxide / Q000737:chemistry; D013696:Temperature; D014961:X-Ray Diffraction
chemical_list: D011208:Powders; C509969:SBA-15; D017640:Silicates; C464484:pluronic block copolymer P123; D002244:Carbon; D012822:Silicon Dioxide; D009532:Nickel; D011060:Poloxalene; D009584:Nitrogen