Monodisperse PtRu Nanoalloy on Carbon as a High-Performance DMFC Catalyst

Abstract

The highly monodisperse PtRu (1:1) colloidal nanoalloy was prepared by the co-reduction of Pt(acac)2 and Ru(acac)3 precursors, deposited on a Vulcan carbon (Vc) support and subsequently treated by acetic acid to generate active PtRu/Vc catalyst, which showed a remarkable performance of catalytic activity in methanol oxidation.

High pressure organic colloid method for the preparation of high performance carbon nanotube-supported Pt and PtRu catalysts for fuel cell applications

“…Low ratios indicate poor activity for the oxidation of methanol to carbon dioxide and excessive accumulation of carbonaceous residue on the catalyst surface, and vice versa for high ratios. For the PtRu/CNT catalyst, the ratio is close to 1, but only about 0.85 for Pt/CNT, revealing that PtRu/CNT can more fully oxidize methanol to carbon dioxide, as previously reported [23][24][25].…”

Shape‐Controlled Synthesis of Pt3Co Nanocrystals with High Electrocatalytic Activity toward Oxygen Reduction

“…Both nanocrystals were deposited on Ketjen Black carbon (40 wt % (Pt-based), Figure S3 c and S3 e in the Supporting Information) and subsequently treated with acetic acid to eliminate the surfactants, which effectively removed the stabilizers. [7,18] Cyclic voltammograms (CVs) of different catalysts obtained in HClO 4 (0.1 m) are shown in Figure 5 a. The current densities (j in mA cm À2 ) were normalized with respect to the geometrical surface areas of glassy carbon electrode (GCE; 0.071 cm…”

Synthesis of CuPt Nanorod Catalysts with Tunable Lengths

“…The ability to create bi-or trimetallic Pt-based nanomaterials may prove to be a useful route for reducing the overall cost of the catalyst while retaining desirable catalytic properties and also affording a decrease in susceptibility to poisoning. [9][10][11][12][13] Facile, controllable syntheses of uniform, shape-controlled Pt alloy nanocrystals that incorporate inexpensive and readily available late-3d transition metals are important steps in this direction, but few examples are known. Recent examples include FePt spheres, 6 cubes, 14 and ultrathin rods; [15][16][17] CoPt 3 spheres and cubes; 18 NiPt spheres and faceted derivatives; 19 and PtPb nanorods.…”