The electronic structure of two series of small titanium oxide clusters, TiOy (y51 – 3) and (TiO2)n (n51 – 4), is studied using anion photoelectron spectroscopy. Vibrationally resolved spectra are obtained for TiO and TiO2 . Six low-lying electronic states for TiO are observed with five of these excited states resulting from multielectron transitions in the photodetachment processes. TiO2 is fo...

SnO2 is one of the most employed n-type semiconducting metal oxide in chemo-resistive gas-sensing although it presents serious limitations due to a low selectivity. Herein, authors introduce 1D SnO2-SiO2 core-shell nanowires (CSNWs). The amorphous SiO2-shell layer with varying thicknesses (1.8–10.5 nm) grown onto (NWs) by atomic deposition (ALD). SiO2-coated CSNWs show dramatic improvement sele...

SYNTHESIS AND CHARACTERIZATION: COMPOSITE OF GRAPHENE OXIDE BASED PALM KERNEL SHELL WASTE WITH Fe3O4. In this study, GO-Fe3O4 were fabricated by co-precipitation technique and the graphene oxide (GO) synthesized from an agricultural biomass, palm kernel shell, via Hummer’s method. Field Emission Scanning Electron Microscopy Energy Dispersive Spectrum (FESEM-EDS), Fourier Transform Infra-Red (FT...

Abstract Surfactant‐free one‐step redox reactions between two types of metal cations enable the synthesis core‐shell nanoparticles without sophisticated control. The reduced noble form a solid core, and transition dissolved upon oxidation induce subsequent formation oxide shell. Various nanostructures are obtained from combination reduction‐preferring Au 3+ , Pd 2+ Pt Rh Ir cations, oxidation‐p...

We report ab initio generalized valence bond and Correlation-consistent configuration interaction studies of CO and NO interacting with Pd and Pt atoms. We find dramatically different bonding mechanisms for the two ligands, which are easily understood in terms of changes in the electronic structure of the metal and the ligand. CO bonds to both Pd and Pt by a u donor/* back-bonding mechanism, yi...

We describe the preparation and characterisation of inorganic-organic hybrid block copolymer silver nanoparticles via the preparation of spherical multi-responsive polymeric micelles of poly(N-methyl-2-vinyl pyridinium iodide)-block-poly(ethylene oxide), P2MVP(38)-b-PEO(211) and poly(acrylic acid)-block-poly(isopropyl acrylamide), PAA(55)-b-PNIPAAm(88) in the presence of AgNO(3). Hence, the P2M...

Adsorption mechanisms of Zn2+ and Ni2+ on hydrous manganese oxide (HMO) were investigated using XAS. Analyses reveal that both metal ions retain their primary hydration shell when sorbed to HMO, which is consistent with physical sorption. These local structures are invariant of pH (3.0-7.0) and adsorbate loading (10(-4) - 10(-2) mol (g of HMO)-1), suggesting one average type of adsorption mecha...

Spherical and quite monodisperse particles (average diameter 60 ( 7 nm) of hematite (R-Fe2O3) were synthesized and then covered with a shell of yttrium oxide of variable thickness. A surface thermodynamic study was carried out for these core/shell colloidal particles, using two experimental techniques: contact angle measurements of selected liquids on glass slides uniformly covered by the mater...

We describe the co-electrospraying of hollow microspheres from a polycaprolactone (PCL) shell solution and various core solutions including water, cyclohexane, poly(ethylene oxide) (PEO), and polyethylene glycol (PEG), using different collectors. The morphologies of the resultant microspheres were characterized by scanning electron microscopy (SEM), confocal microscopy, and nano-X-ray computed ...