title: [Synthesis, characterization and electrocatalytic performance of Pd/CMK-3 for formic acid oxidation].
abstract: The synthesis of mesoporous carbons CMK-3 was implemented using SBA-15 samples as the hard templates and sucrose as the carbon source. Ordered mesoporous carbon CMK-3 supported palladium catalyst with a loading amount of 20% (Pd/CMK-3) was prepared by a complexing reduction method. XRD and TEM results showed that the p6mm hexagonal symmetric pore structures of CMK-3 were highly ordered and the Pd nanoparticles with the average size of 4. 2 nm and 4. 5 nm were well dispersed on CMK-3 and activated carbon (AC) surfaces respectively. Raman results revealed that CMK-3 presented higher graphitization and a higher electric conductivity than AC. The most probable pore size of CMK-3 was 4.5 nm, which is larger than that of AC (0.54 nm). The BET surface area of CMK-3 was 1 114 m2 x g(-1), which was also larger than that of AC(871 m2 x g(-1)). The mesoporous structure of CMK-3 was also observed. The Pd/CMK-3 catalyst exhibited more excellent initial electrocatalytic activity for formic acid oxidation than Pd/AC by cyclic voltammetry (CV). But the chronoamperometry (CA) demonstrated that the stability of the two catalysts were almost equal after 100 s polarization at 0.2 V (vs. SCE).
authors.affiliation: State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210046, China. hbf87@163.com
authors.forename: Zhong-Ke
authors.initials: ZK
authors.lastname: Huan
authors.forename: En-Min
authors.initials: EM
authors.lastname: Zong
authors.forename: Dan
authors.initials: D
authors.lastname: Wei
authors.forename: Hai-Qin
authors.initials: HQ
authors.lastname: Wan
authors.forename: Shou-Rong
authors.initials: SR
authors.lastname: Zheng
authors.forename: Zhao-Yi
authors.initials: ZY
authors.lastname: Xu
mesh_terms: D002244:Carbon / Q000737:chemistry*; D002384:Catalysis; D011211:Electric Power Supplies; D004563:Electrochemistry / Q000379:methods; D005561:Formates / Q000737:chemistry; D053768:Metal Nanoparticles / Q000737:chemistry*; D053761:Nanocomposites / Q000737:chemistry*; D058608:Nanopores; D010084:Oxidation-Reduction; D010165:Palladium / Q000737:chemistry*; D012822:Silicon Dioxide
chemical_list: D005561:Formates; C509969:SBA-15; C030544:formic acid; D010165:Palladium; D002244:Carbon; D012822:Silicon Dioxide