The structural and electronic/optical properties of pure and Ag-N-codoped (8,0) ZnO nanotubes have been studied using first-principles calculations in the framework of the local spin density approximation. The configurations for Zn atoms replaced by Ag atoms are p-type semiconductor materials, and the bandgap increases when N atoms are doped into ZnO nanotube configurations. The optical studies...

Using a solid-state-reaction method, La-doped AgNbO(3) samples of Ag(1-x)La(x)NbO(3) were synthesized and their photocatalytic activities were evaluated from gaseous 2-propanol decomposition under visible light irradiation. The photocatalytic activity and the surface area were increased by La doping, but the crystal structure and light absorption property did not change. The photocatalytic acti...

We present a green route for the colloidal synthesis of undoped and silver (Ag) doped cadmium sulfide (CdS) quantum dots (QDs). have used olive oil as reaction medium, which acted source oleic acid (OA) ligand in CdS QDs. With increase OA concentration, dispersibility QDs improved. The water-dispersible were prepared via exchanging OA’s associated with 3-mercaptopropionic (MPA). MPA-capped show...

Recently, the X-ray determined structure of the thiolated Au18 cluster has been reported. In this communication, we addressed a study of structures and chiroptical properties of thiolated Au18 cluster doped with up to ten Ag atoms, which have been calculated by Time Dependent Density Functional Theory (TD-DFT). The number of Ag atoms was steadily varied and more stable isomers showed optical an...

Abstract Silver-doped zinc oxide nanostructures (Ag/ZnO NSs) with Ag content of 0 wt%, 5 10 and 20 wt% were synthesized using a hydrothermal technique. The prepared annealed at 500 °C for 2 h. samples characterized by scanning electron microscopy, FTIR, X-ray diffraction (XRD), electrical conductivity. FTIR spectra confirms the presence hydrogen-related shallow donor defects in Ag/ZnO NSs, whic...

In recent years, BiVO4 has drawn much attention as a novel photocatalyst given its excellent ability to absorb visible light. This work reports the development of Ag-modified BiV1-xMoxO4 composites through a facile hydrothermal synthesis with the subsequent photoinduced reduction of Ag+ at almost neutral pH conditions. Metallic Ag nanoparticles were deposited on the (040) facet of Mo-doped BiVO...

We have applied extended X-ray absorption fine structure (EXAFS) analyses and ab initio molecular dynamics (AIMD) simulations to study the structure of Ag-doped (up to 42%) Ge1Sb2Te4 alloys. The computer models are consistent with EXAFS experiments, and reveal that the Ge environment is significantly modified by Ag doping, whereas those of Sb and Te are barely affected (except for high Ag conce...

Aqueous leaf extract of Plectranthus barbatus was used, for the first time, preparation (2, 6 mol%) silver (Ag)-doped zinc sulfide nanoparticles (ZnS NPs), acting as a stabilizing and capping agent NPs’ production. The obtained metal oxides were characterized by FTIR, UV-visible, XRD, SEM methods. results revealed that 0.02 0.06% Ag-doped ZnS had optical bandgaps 3.20 3.03 eV. XRD evinced cryst...