摘要：Graphical abstractDisplay OmittedAbstractIn this study, gold nanoparticles (Au NPs) stabilized by a starch polymer have been successfully prepared and characterized via a number of techniques including X-ray photoelectron spectroscopy (XPS), X-ray diffraction (XRD), UV-visible spectroscopy (UV-vis), transmission electron microscopy (TEM), and dynamic light scattering (DLS) measurements. The catalytic activity of starch-stabilized Au NPs was also examined toward the homocoupling of phenylboronic acid in water using oxygen in air as oxidant at an ambient temperature (25±1°C). Several parameters including the catalyst loading, base equivalent (eq.), base type, and reaction time were studied. This study offers a simple, inexpensive and environmentally friendly procedure for the stabilization of colloidal gold catalysts using a hydroxyl-rich structure of starch polymer with a great promise through potential applications in related fields.
