Thrifty catalysis: Tungsten carbide microspheres with high surface area and CO chemisorption capacity were prepared by heating mixtures of a resorcinol–formaldehyde polymer and ammonium metatungstate. Platinum supported on these microspheres (see electron micrograph) shows higher activity than the commercial catalyst with 20 % Pt–Ru (1:1) on C for the electrooxidation of methanol.

No abstract

No abstract

No abstract

In this paper, we report for the first time on the room-temperature preparation of metallic aluminum nanoparticles by the pulsed sonoelectrochemical method. The prepared nanoparticles were characterized by X-ray diffraction (XRD), high-resolution scanning electron microscopy, transmission electron microscopy (TEM), and high-resolution transmission electron microscopy. TEM analysis shows that the prepared aluminum nanoparticles range from 10 to 20 nm in size. The