title: Three-dimensional B,N-doped graphene foam as a metal-free catalyst for oxygen reduction reaction.
abstract: Using a modified chemical vapor deposition (CVD) method, we have prepared a class of new graphene foams (GFs) doped with nitrogen, boron or both. Nitrogen-doped graphene foams (N-GFs) with a nitrogen doping level of 3.1 atom% were prepared by CVD of CH4 in the presence of NH3 while boron-doped graphene foams (B-GFs) with a boron doping level of 2.1 atom% were produced by using toluene and triethyl borate as a carbon and a boron source. On the other hand, graphene foams co-doped with nitrogen (4.5 atom%) and boron (3 atom%) (BN-GFs) were prepared by CVD using melamine diborate as the precursor. In all cases, scanning electron microscope (SEM) images revealed well-defined foam-like microstructures, while electrochemical measurements showed much higher electrocatalytic activities toward oxygen reduction reaction for the doped graphene foams than their undoped counterparts.
authors.affiliation: Institute of Advanced Materials for Nano-Bio Applications, School of Ophthalmology & Optometry, Wenzhou Medical College, 270 Xueyuan Xi Road, Wenzhou, Zhejiang 325027, China.
authors.forename: Yuhua
authors.initials: Y
authors.lastname: Xue
authors.forename: Dingshan
authors.initials: D
authors.lastname: Yu
authors.forename: Liming
authors.initials: L
authors.lastname: Dai
authors.forename: Ruigang
authors.initials: R
authors.lastname: Wang
authors.forename: Dingqiang
authors.initials: D
authors.lastname: Li
authors.forename: Ajit
authors.initials: A
authors.lastname: Roy
authors.forename: Fan
authors.initials: F
authors.lastname: Lu
authors.forename: Hao
authors.initials: H
authors.lastname: Chen
authors.forename: Yong
authors.initials: Y
authors.lastname: Liu
authors.forename: Jia
authors.initials: J
authors.lastname: Qu
mesh_terms: D000641:Ammonia / Q000737:chemistry; D001895:Boron / Q000737:chemistry*; D002384:Catalysis; D055664:Electrochemical Techniques; D006108:Graphite / Q000737:chemistry*; D008697:Methane / Q000737:chemistry; D009584:Nitrogen / Q000737:chemistry*; D010084:Oxidation-Reduction; D010100:Oxygen / Q000737:chemistry*; D014050:Toluene / Q000737:chemistry
chemical_list: D014050:Toluene; D000641:Ammonia; D006108:Graphite; D009584:Nitrogen; D001895:Boron; D008697:Methane; D010100:Oxygen