Amorphous Cu–Sn–I is a promising p-type transparent semiconductor. Therefore, herein, composition and structure of sputtered thin films with varying thickness Sn content are investigated by different electron microscopy techniques, energy-dispersive X-ray spectroscopy, absorption spectroscopy at the Cu, Sn, I K-edge. After exposure to air, found contain significant amounts oxygen, leading compl...

nitration of phenol and various 4-substituted phenols with cu(no3)2.3h2o, cu(no3)2.3h2o/sio2, 9h2o and cr(no3)2. 9h2o in different anhydrous organic solvents are investigated. high selectivity ratio of para vs ortho isomers has been observed. mono- and dinitro compounds from phenol and 4-substituted phenols by choosing the proper solvents and reaction conditions, are also obtained with high sel...

in this research, elemental and chemical characteristics of atmospheric dust particulates including major and trace elements in two synoptic meteorological stations (abadan and urmia cities) during dust events and ambient periods have been evaluated. results showed that during dust events to ambient periods in both stations, major elements including ca, mg, al and trace elements comprised p and...

Methanotrophic-heterotrophic communities were selectively enriched from sewage sludge to obtain a mixed culture with high levels of poly-β-hydroxybutyrate (PHB) accumulation capacity from methane. Methane was used as the carbon source, N2 as sole nitrogen source, and oxygen and Cu content were varied. Copper proved essential for PHB synthesis. All cultures enriched with Cu could accumulate high...

background: considering the toxic effects of heavy metals and microbial pathogens in industrial wastewaters, it is necessary to treat metal and microbial contaminated wastewater prior to disposal in the environment. the purpose of this study is to assess the removal of heavy metals pollution and microbial contamination from a mixture of municipal and industrial wastewater using membrane bioreac...

The title compound, [Cu(ClO(4))(2)(C(3)H(4)N(2))(4)], was obtained unexpectedly by the reaction of copper(II) perchlorate hexa-hydrate with equimolar amounts of 1-chloro-1-nitro-2,2,2-tripyrazolylethane in methanol solution. The crystal structure comprises octa-hedrally coordinated Cu(2+) ions, located on an inversion centre, with four pyrazole ligands in the equatorial plane. The average Cu-N ...