Designing axial growth of Co–Ni bimetallic nanowires with hexagon-like caps and their catalytic hydrogenation for nitrobenzene

Co–Ni bimetal nanocrystals, which are constructed with long wires and hexagon-like caps, were synthesized through supersaturation, precipitation, and axial growth from the prenucleated bimetal seeds. These Co–Ni bimetallic nanowires with hexagonal caps are more effective than corresponding nanoparticles for the catalytic hydrogenation of nitrobenzene to produce aniline.