2O 5-SiO 2) composite photocatalyst under visible light]]>

摘要

AbstractCdS/(Cal-Ta2O5-SiO2) composite photocatalyst has been successfully fabricated via wet chemistry method. Ta2O5-SiO2with multi-step Ta2O5deposition on SiO2has more Ta2O5on SiO2to ensure the active sites. Trough multi-step calcination, Ta2O5can load on SiO2with uniform and stable, which make it have high photocatalytic activity. The obtained samples were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), diffuse reflectance ultraviolet-visible spectroscopy (UV–vis) and photoluminescence spectroscopy (PL). Without any co-catalysts, the as-prepared CdS/(Cal-Ta2O5-SiO2) exhibited remarkable photocatalytic activity and recyclability both in the degradation of rhodamine B and in the hydrogen production from water splitting under visible light.Graphical abstractCdS/(cal-Ta2O