title: Constructing carbon-coated Fe₃O₄ microspheres as antiacid and magnetic support for palladium nanoparticles for catalytic applications.
abstract: Fe₃O₄ microsphere is a good candidate as support for catalyst because of its unique magnetic property and large surface area. Coating Fe₃O₄ microspheres with other materials can protect them from being dissolved in acid solution or add functional groups on their surface to adsorb catalyst. In this paper, a carbon layer was coated onto Fe₃O₄ microspheres by hydrothermal treatment using polyethylene glycol as the connecting agents between glucose and Fe₃O₄ spheres. Through tuning the added amounts of reactants, the thickness of the carbon layer could be well-controlled. Because of the abundant reductive groups on the surface of carbon layer, noble metal ions could be easily adsorbed and in situ reduced to nanoparticles (6-12 nm). The prepared catalyst not only had unique antiacid and magnetic properties, but also exhibited a higher catalytic activity toward the reduction of methyl orange than commercially used Pd/C catalyst.
authors.affiliation: Alan G. MacDiarmid Institute, Jilin University, Changchun 130012, PR China.
authors.forename: Lirong
authors.initials: L
authors.lastname: Kong
authors.forename: Xiaofeng
authors.initials: X
authors.lastname: Lu
authors.forename: Xiujie
authors.initials: X
authors.lastname: Bian
authors.forename: Wanjin
authors.initials: W
authors.lastname: Zhang
authors.forename: Ce
authors.initials: C
authors.lastname: Wang
mesh_terms: D002244:Carbon / Q000737:chemistry*; D002384:Catalysis; D008280:Magnetics; D053768:Metal Nanoparticles / Q000737:chemistry*; D008863:Microspheres; D010084:Oxidation-Reduction; D010165:Palladium / Q000737:chemistry*; D020005:Propanols / Q000737:chemistry; D013499:Surface Properties
chemical_list: D020005:Propanols; C006463:allyl alcohol; D010165:Palladium; D002244:Carbon