Boron nitride ~BN! thin films ~containing mixed cBN/hBN phase! have been deposited on Si~100! substrates using neutralized nitrogen beam and electron beam evaporation of boron. All as-deposited BN films were p type with a room-temperature carrier concentration in the range of 5310 to 1310 cm. The Mg-doped BN films showed carrier concentrations in the range of 1.2 310 cm to 5.2310 cm when the Mg...

tio2 nanorods can be used as dye-sensitized solar cells and as various sensors and photocatalysts. these nanorods are synthesized by a using thermal corrosion process in a naoh solution at 200 oc with tio2 powder as a source material. in the present work, the synthesis of tio2 nanorods in anatase, rutile and ti8o15 phases and the synthesis of tio2 nanorods by using the sol-gel method and alkali...

Developing efficient, low-cost, and stable carbon-based catalysts for oxygen reduction reaction (ORR) to replace the expensive platinum-based electrocatalysts remains a major challenge that hamper the practical application of fuel cells. Here, we report that N, Fe, and S co-doped nanoporous carbon material, derived via a facile one-step pyrolysis of sewage sludge, the major byproduct of wastewa...

The ability to produce high-quality single-phase diluted magnetic semiconductors (DMS) is the driving factor to study DMS for spintronics applications. Fe-doped ZnO was synthesized by using a low-temperature co-precipitation technique producing Zn 1-x Fe x O nanoparticles (x= 0, 0.02, 0.04, 0.06, 0.08, and 0.1). Structural, Raman, density functional calculations, and magnetic studies have been ...

Fe-based catalysts doped with Mo were prepared and tested in the catalytic decomposition of methane (CDM), which aims for the co-production of CO2-free hydrogen and tubular nanostructured carbon (NC). Catalysts performance were tested in a thermobalance operating either at isothermal or temperature programmed mode by monitoring the weight changes with time or temperature, respectively, as a res...

Compared to Ru single atom catalyst, hetero-RuM (M = Fe, Os, and Ir) double catalysts showed improved N 2 RR activity with the help of d xz xy bonding orbital, caused by strain, dopant configurational effects.

Single impurities with nonzero spin and multiple ground states offer a degree of freedom that can be utilized to store the quantum information. However, Fe(2+) dopant is known for having a single nondegenerate ground state in the bulk host semiconductors and thus is of little use for spintronic applications. Here we show that the well-established picture of Fe(2+) spin configuration can be modi...

A new nanophotocatalysts series of M2Zr2O7 (M = Mn, Cu, and Fe) doped Fe2Zr2O7 systems were prepared via sol-gel using the pechini method, characterized, tested in photocatalytic degradation olive mill wastewater (OMW). The materials was evaluated by measuring total phenolic compounds (TPCs) Folin-Ciocalteu method for variable pH under a commercial LED lamp (45 W). removal TPCs measured at diff...

The $s,p-d$ exchange coupling between the spins of band carriers and transition metal (TM) dopants ranging from Ti to Cu in ZnO is studied within density functional theory. $+U$ corrections are included reproduce experimental gap dopant levels. $p-d$ reveals unexpectedly complex features. In particular, (i) constants $N_0\beta$ vary about 10 times when going V Cu, (ii) not only value but also s...

Undoped and 8 at. % Al doped ZnO films are deposited on glass substrates by sol-gel spin coating. The XRD patterns reveal polycrystalline nature of the with hexagonal Wurtzite phase. particle sizes calculated via Debye Scherrer formula lie between 21 to 66 nm. Presence tensile strain is observed Williamson Hall analysis. Almost 3.5 times enhancement happens when dopant introduced as compared un...