Synthesis of silver particles stabilized by a bifunctional SiH _x -NH _y -PMHS oligomer as recyclable nanocatalysts for the catalytic reduction of 4-nitrophenol.

ABSTRACT: Bifunctional oligomers with both reducing and stabilizing functionalities were prepared and successfully applied to the preparation of silver colloids of around 2 nm size without employing a strong stabilizer such as S and P, which was quite difficult to achieve. Transmission electron microscopy (TEM) and dynamic light scattering (DLS) were performed to determine the morphology and particle size of the Ag colloids. UV-vis spectroscopy and X-ray absorption spectroscopy (XAS) were implemented to investigate the oxidation state of the Ag colloids. Synthesis parameters such as the density control of the ligating functionalities, the propinquity of the reducing and stabilizing groups, the extent of ligand stabilization and the reducing rates were found to have important effects on the formation

SUBMITTER: Wang Z 

PROVIDER: S-EPMC9072560 | biostudies-literature | 2019 Sep

REPOSITORIES: biostudies-literature