title: One-Pot Anchoring of Pd Nanoparticles on Nitrogen-Doped Carbon through Dopamine Self-Polymerization and Activity in the Electrocatalytic Methanol Oxidation Reaction.
abstract: Exploration of advanced electrocatalysts to promote the sluggish methanol oxidation reaction (MOR) is of vital importance for developing high efficiency and low-cost direct methanol fuel cells. Highly dispersed palladium nanoparticles (Pd NPs) anchored on a nitrogen-doped carbon support were fabricated using a facile one-pot dopamine self-polymerization mediated redox strategy, in which dopamine not only acted as a moderate reductant to induce the formation of Pd NPs during self-polymerization but was also the precursor of the nitrogen-doped carbon support for Pd. The synthesized hybrid features the following characteristics: 1) High dispersity of Pd NPs, which exposed a high abundance of active surfaces and sites for heterogeneous electrocatalysis; 2) metal-support interactions, which may affect the surface chemistry and electron distribution of active Pd NPs; 3) the Pd NPs were partially imbedded or encapsulated into the support, thus reducing the possible agglomeration of Pd NPs during cyclic measurements. The electrocatalyst with such favorable features provided higher mass activity (2.2 times that of commercial Pd/C) and better durability (reduced loss of activity during simulated frequent startup-shutdown operations) for the MOR in alkaline media.
authors.affiliation: School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang, 212013, P.R. China.
authors.forename: Xin
authors.initials: X
authors.lastname: Li
authors.affiliation: School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang, 212013, P.R. China.|Institute of Green Chemistry and Chemical Technology, Jiangsu University, Zhenjiang, 212013, P.R. China.
authors.forename: Xiangheng
authors.initials: X
authors.lastname: Niu
authors.affiliation: School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang, 212013, P.R. China.
authors.forename: Wenchi
authors.initials: W
authors.lastname: Zhang
authors.affiliation: School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang, 212013, P.R. China.
authors.forename: Yanfang
authors.initials: Y
authors.lastname: He
authors.affiliation: School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang, 212013, P.R. China.
authors.forename: Jianming
authors.initials: J
authors.lastname: Pan
authors.affiliation: Institute of Green Chemistry and Chemical Technology, Jiangsu University, Zhenjiang, 212013, P.R. China.
authors.forename: Yongsheng
authors.initials: Y
authors.lastname: Yan
authors.affiliation: School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang, 212013, P.R. China.
authors.forename: Fengxian
authors.initials: F
authors.lastname: Qiu
mesh_terms: D002244:Carbon / Q000737:chemistry*; D002384:Catalysis; D004298:Dopamine / Q000737:chemistry*; D004563:Electrochemistry; D053768:Metal Nanoparticles / Q000737:chemistry*; D000432:Methanol / Q000737:chemistry*; D009584:Nitrogen / Q000737:chemistry*; D010084:Oxidation-Reduction; D010165:Palladium / Q000737:chemistry*; D010316:Particle Size; D058105:Polymerization; D013499:Surface Properties
chemical_list: D010165:Palladium; D002244:Carbon; D009584:Nitrogen; D004298:Dopamine; D000432:Methanol
keywords: carbon support; electrocatalysis; electrochemistry; nanoparticles; polymerization