Synthesis and characterization of a porous amorphous Ni–B catalyst on titania by silver-catalyzed electroless plating

TLDR: In this article, an amorphous Ni-B/TiO2 catalyst has been synthesized by silver-catalyzed electroless nickel plating, and high-resolution transmission electron microscopy (HRTEM) indicated that the Ni−B nanoparticles presented a porous and flower-like morphology, which was different from the solid sphere of conventional Ni·B particles prepared by impregnation reduction method.

Abstract: An amorphous Ni–B/TiO2 catalyst has been synthesized by silver-catalyzed electroless nickel plating. The amorphous structure of Ni–B nanoparticles was characterized by X-ray diffraction (XRD) and selected area electron diffraction (SAED). A transmission electron micrograph (TEM) of the Ni–B/TiO2 showed particles with size ranging from 30 to 50 nm were homogeneously dispersed over TiO2 support. High-resolution transmission electron microscopy (HRTEM) indicated that the Ni–B nanoparticles presented a porous and flower-like morphology, which was different from the solid sphere of conventional Ni–B particles prepared by impregnation–reduction method. To investigate the formation process of the porous Ni–B particles, the diffusion of nickel nuclei and the growth of Ni–B particles were characterized. The as-prepared porous Ni–B/TiO2 catalyst exhibited superior catalytic activities in the hydrogenation reactions to those of catalysts prepared by conventional methods.