Shape-Controlled Synthesis of Surface-Clean Ultrathin Palladium Nanosheets by Simply Mixing a Dinuclear Pd~1 Carbonyl Chloride Complex with H2O

摘要

During the past decades, shape control of noble metal (NM) nanocrystals has been extensively demonstrated as an effective means to tailor their properties for a wide range of applications such as catalysis, optics, spectroscopy, biological labeling, and photothermal therapy. A number of synthetic strategies including photochemical electrochemical and templating methods have been developed to achieve shape control of NM nanocrystals. Wet-chemical synthesis of NM nanocrystals with well-defined shape usually requires strict control over the kinetics and thermodynamics of the systems. Therefore, typical shape-controlled syntheses of NM nanocrystals involve the use of additives, such as surfactants, polymer capping agents, small adsorbates, and even biomolecules. Although much effort has been devoted to investigating the relationship between the additives and the shape of the obtained NM nanocrystals, it is still a great challenge to address how the additives control the shape of NM nanocrystals at the molecular level.