Ytterbium oxide nanofibers: fabrication and characterization for energy applications.

Metal oxide nanomaterials are widely used in many applications of renewable energy. Ytterbium oxide (YbO) also attracts attention due to its similar structure to ZnO (~3,26 eV) and TiO (~3,36 eV) in terms of bandgap energy. In this study, YbO belonging to the lanthanide oxide family was produced as nanofiber forms by using the electrospinning technique, which allows for large-scale production, for the first time.

A new sensing platform based on a ternary nanocomposite of graphitic carbon nitride-silver sulfide-nickel molybdate for quercetin determination.

In this study, we have shown how to prepare a ternary nanocomposite (AgS-NiMoO-g-CN) consisting of graphitic carbon nitride (g-CN) nanosheets, silver sulfide (AgS) nanocrystals, and nickel molybdate (NiMoO) nanorods and its sensing ability to detect quercetin, a flavonoid found in many fruits and vegetables. An AgS-NiMoO-g-CN nanocomposite-modified screen-printed electrode (SPE) exhibited remarkable sensing performance in a quercetin (Que) concentration range of 0.005 μM-20 μM with a low detection limit of 2.

A Au/CuNiCoS/p-Si photodiode: electrical and morphological characterization.

In this present work, CuNiCoS thiospinel nanocrystals were synthesized by hot injection and characterized by X-ray diffractometry (XRD), high-resolution transmission electron microscopy (HR-TEM), and energy-dispersive X-ray spectroscopy (EDS). The XRD, EDS, and HR-TEM analyses confirmed the successful synthesis of CuNiCoS. The obtained CuNiCoS thiospinel nanocrystals were tested for photodiode and capacitance applications as interfacial layer between Au and p-type Si by measuring - and - characteristics.

Rhenium/rhenium oxide nanoparticles production using femtosecond pulsed laser ablation in liquid.

In this study, rhenium/rhenium oxide nanoparticles (Re / ReO NPs) have been produced for the first time in ultrapure water by using Femtosecond Pulsed Laser Ablation in Liquid (fsPLAL) method. X-Ray Diffraction (XRD) measurements and results obtained for NPs show the existence of well-crystallized peaks and preferred phases. Re NPs have hexagonal structure while ReO NPs have the perovskite-like cubic crystal structures.

Hydrogen Evolution Catalyzed by CuWS at Liquid-Liquid Interfaces.

The present study reports, for the first time, both a facile synthesis for ternary CuWS nanocubes, which were synthesized by a simple and low-cost hot-injection method, and the hydrogen evolution reaction at a biomembrane-like polarized water/1,2-dichloroethane interface catalyzed by CuWS nanocubes. The rate of hydrogen evolution reaction is increased by about 1000 times by using CuWS nanocubes when compared to an uncatalyzed reaction.

Penternary chalcogenides nanocrystals as catalytic materials for efficient counter electrodes in dye-synthesized solar cells.

The penternary chalcogenides Cu2CoSn(SeS)4 and Cu2ZnSn(SeS)4 were successfully synthesized by hot-injection method, and employed as a catalytic materials for efficient counter electrodes in dye-synthesized solar cells (DSSCs). The structural, compositional, morphological and optical properties of these pentenary semiconductors were characterized by X-ray diffraction (XRD), Raman spectroscopy, transmission electron microscopy (TEM), energy-dispersive spectrometer (EDS) and ultraviolet-visible (UV-Vis) spectroscopy. The Cu2CoSn(SeS)4 and Cu2ZnSn(SeS)4 nanocrystals had a single crystalline, kesterite phase, adequate stoichiometric ratio, 18-25 nm particle sizes which are forming nanospheres, and band gap energy of 1.