Mass selected cations of Ag clusters are deposited, together with Ar seeded with CO2 (or other electron scavengers such as O2, N2O, or CCl4), on a cold substrate, while being flooded with low energy electrons. Optical absorption measurements reveal an efficient trapping of Ag cluster cations in the Ar matrix, provided that CO2 or another electron scavenger is present to ensure charge neutrality...

The production of silver cluster cations Ag(n)(2+) (for several selected sizes in the range n = 39-119) and Ag(n)(3+) (for n = 58, 61, 67) by electron impact ionization of neutral precursors has been studied. The scaling of appearance energies with cluster radius follows the metallic droplet model but, curiously, with a slope which is estimated to be quite different from the literature values f...

The crystal structure of four Pb apatite samples, Pb5(BO4)3Cl, was refined with synchrotron high-resolution powder X-ray diffraction data, Rietveld refinements, space group P63/m and Z = 2. For this isotypic series, B = P5+ is pyromorphite, B = As5+ is mimetite and B = V5+ is vanadinite. The ionic radius for As5+ (0.355 Å) is similar to that of V5+ (0.335 Å), and this is twice as large as that ...

Objective(s): Binary hybrids of chitosan-zeolite have many interesting applications in separation and bacteriostatic activity. Materials and Methods: Template free ZSM-5 zeolite was synthesized by hydrothermal method, physical hydrogels of nano chitosan in the colloidal domain were obtained in the absence of toxic organic solvent and then nano chitosan/ZSM-5 hybrid composites with nano chitosan...

In the polymeric title compound, [Ag(C8H14N3)] n , the Ag(I) cation is coordinated by three N atoms from three 3,5-diisopropyl-1,2,4-triazolate anions in a T-shaped geometry. The Ag(I) cation deviates from the coordination plane by 0.014 (1) Å and the N-Ag-N bond angles are 96.85 (11), 97.72 (10) and 165.39 (12)°. The triazolate anion bridges three Ag(I) cations, forming a three-dimensional pol...

The crystal structure of the title compound, [Ag(2)(C(8)H(7)O(2))(2)](n), features polymeric chains extending along the a axis, with the two Ag(+) cations in a distorted trigonal coordination. The range of Ag-O bond lengths is 2.169 (2)-2.433 (2) Å, whereas the Ag⋯Ag separations are in the range 2.8674 (4)-3.6256 (5) Å. The 2-methyl-benzoate groups are oriented at a dihedral angle of 60.7 (1)° ...

Here, we demonstrate the incorporation of monovalent cation additives into CH3NH3PbI3 perovskite in order to adjust the optical, excitonic, and electrical properties. The possibility of doping was investigated by adding monovalent cation halides with similar ionic radii to Pb2+, including Cu+, Na+, and Ag+. A shift in the Fermi level and a remarkable decrease of sub-bandgap optical absorption, ...

Materials with apatite crystal structure have a great potential for incorporating the long-lived radioactive iodine isotope (129I) in the form of iodide (I) from nuclear waste streams. Because of its durability and potentially high iodine content, the apatite waste form can reduce iodine release rate and minimize the waste volume. Crystal structure and composition of apatite (A5(XO4)3Z) was inv...

The uncontrolled concentrations of heavy metals introduced into the water sources need an effective method for their removal. dithiocarbamate (dtc) ligands are most popular precipitating agents used removal from wastewater. Presently, two novel dtc ligands, one without methylene linker (K2L1) and other with (K2L2) were eight ions including Fe2+, Co2+, Ni2+, Cu2+, Cd2+, Ag+, Zn2+ Pb2+ aqueous so...