Search

We report the synthesis of CdS nanospheres and reduced graphene oxide (rGO) hybrid nanocomposites (CdS@rGO) under hydrothermal conditions. X-ray diffraction (XRD), scanning electron microscopy (SEM), and transmission electron microscopy (TEM) are employed to confirm the structures and morphologies of sphere-like CdS@rGO nanocomposites. The electrocatalytic activity for the reduction of triiodide and chemical stability for CdS@rGO composites are studied by cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS), and Tafel plots. The short-circuit current density ( J sc ), open-circuit voltage ( V oc ) and fill factor ( FF ) are 14.81 mA cm −2 , 0.76 V and 0.656, respectively. Most importantly, these CdS@rGO materials are used as the counter electrode (CE) of dye-sensitized solar cells (DSCs), and their conversion efficiency of this CE reaches 7.39%, which is comparable to the conventional platinum counter electrode (7.44%) under the same test conditions. Meanwhile, the CdS@rGO CE possesses the robust stability and the cost-effective performance in addition to the high power conversion efficiency. [ABSTRACT FROM AUTHOR]

Five silver(I) complex of 4-amino-3,5-dipropyl-4 H-1,2,4-triazole (4-NH-3,5-Prtz) or 4-amino-3,5-dibutyl-4 H-1,2,4-triazole (4-NH-3,5-Butz), namely [Ag(4-NH-3,5-Butz)(NO)] ( 1), [Ag(4-NH-3,5-Prtz)(NO)](NO) ( 2), [Ag(4-NH-3,5-Prtz)](ClO) ( 3), [Ag(4-NH-3,5-Prtz)](CFSO) ( 4) and [Ag(4-NH-3,5-Butz)](BF) ( 5), have been prepared and structurally characterized by X-ray single crystal diffractions. Based on the structural data, a possible mechanism for the formation of Agtz cluster has been proposed, involving the formation of a dimer of dimer-(Agtz), followed by the replacement of counterions by two additional triazoles. [ABSTRACT FROM AUTHOR]

An exceedingly rare 2D → 3D polythreading framework based on (4)-c sql networks with arms, [Cd(L)(bipy) 2 ] n , has been prepared and characterized by X-ray diffraction analysis, and its solid state luminescence has been examined at room temperature. [ABSTRACT FROM AUTHOR]