Hexaniobate nanoscrolls (NS-H4Nb6O17) and acid-restacked calcium niobate nanosheets (R-HCa2Nb3O10) were compared as oxide semiconductors in photocatalytic assemblies for H2 production using ethylenediaminetetraacetic acid (EDTA) as a sacrificial electron donor and platinum (Pt) nanoparticles as catalysts. Ru(bpy)3 and Ru(bpy)2(4,4′-(PO3H2)2bpy) (bpy ) 2,2′-bipyridine) were employed as visible l...

The formation of Pt-Ru nanoclusters (NCs) by sequential deposition of Pt and Ru on a periodically rumpled graphene sheet supported on Ru(0001) is analyzed by atomistic-level modeling and kinetic Monte Carlo simulations. The "coarse-scale" periodic variation of the adsorption energy of metal adatoms across the graphene sheet directs the assembly of NCs to a periodic array of thermodynamically pr...

Abstract It was observed for the first time that specific surface area of graphitic carbon nitride (g-C 3 N 4 ) increased from 32 m 2 g −1 to 142 and 171 Pt Ru, respectively, due etching g-C by Ru nanoparticles. Metal nanoparticles catalyze hydrogenation C – bonds “move” through structure tunnels in it creating “spongy nitride” (sgCN). The reactions take place on metal NPs, which are covered wi...

In the present study, a step by step process was applied to synthesize bimetallic electrocatalyst (Ru and Pt on VulcanXC-72R). This process can reduce the amount of platinum and increase the gas diffusion electrode (GDE) performance in the cathodic reaction of polymer electrolyte membrane fuel cells (PEMFCs). Using the impregnation by hydrothermal synthesis method, a series of electrocatalysts ...

A major hurdle for the wide spread commercialization of proton exchange membrane based fuel cells (PEMFCs) and water electrolyzers are durability high cost noble metal catalysts. Here, alternative support materials might offer advantages, as they can alter properties a catalyst by means strong interaction (SMSI) that has been shown to prevent platinum oxidation suppress oxygen reduction reactio...

We report the first combined application of solid-state electrochemical NMR (EC NMR), cyclic voltammetry (CV), and potentiostatic current generation to investigate the topic of the ruthenium promotion of MeOH electro-oxidation over nanoscale platinum catalysts. The CV and EC NMR results give evidence for two types of CO: CO on essentially pure Pt and CO on Pt/Ru islands. There is no NMR evidenc...

Metallic nanoparticles with strong optically resonant properties behave as nanoscale optical antennas, and have recently shown extraordinary promise as light-driven catalysts. Traditionally, however, heterogeneous catalysis has relied upon weakly light-absorbing metals such as Pd, Pt, Ru, or Rh to lower the activation energy for chemical reactions. Here we show that coupling a plasmonic nanoant...

Platinum/ruthenium/nitrogen doped diamondlike carbon PtRuN-DLC thin films were deposited on p-Si 100 substrates with dc magnetron cosputtering by varying the dc power applied to a Pt50Ru50 target to investigate the effect of Pt and Ru incorporation in the films on the bonding structure, adhesion strength, surface morphology, and corrosion behavior of the films by means of X-ray photoelectron sp...

Phthalocyanine complexes of Cu, Co, Ni, Fe, Zn, Pd, Pt and Ru have been synthesized from reaction between phthalonitrile and proper metal salts upon exposure to microwave irradiation under solvent-free conditions and considerably reduced reaction times.