Synthesis of Metal-Capped Semiconductor Nanowires from Heterodimer Nanoparticle Catalysts

02 engineering and technology 0210 nano-technology 01 natural sciences 0104 chemical sciences
DOI: 10.1021/jacs.0c09222 Publication Date: 2020-10-20T15:22:40Z
ABSTRACT
Semiconductor nanowires (NWs) capped with metal nanoparticles (NPs) show multifunctional and synergistic properties, which are important for applications in the fields of catalysis, photonics, electronics. Conventional colloidal syntheses this class hybrid structures require complex sequential seeded growth, where each section requires its own set growth conditions, methods preparing such wires not universal. Here, we report a new general method synthesizing metal-semiconductor nanohybrids based on particle catalysts, prepared by scanning probe block copolymer lithography, chemical vapor deposition. In process, metallic heterodimer NPs were used as catalysts NW to form semiconductor NWs particles (Au, Ag, Co, Ni). Interestingly, processes regioselective controlled composition used. Using systematic experimental approach, paired density functional theory calculations, able postulate three different modes, one without precedent.
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