The morphology and electrical properties of orthorhombic β-WO3 nanoflakes with thickness of ~7 to 9 nm were investigated at the nanoscale with a combination of scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDX), current sensing force spectroscopy atomic force microscopy (CSFS-AFM, or PeakForce TUNA™), Fourier transform infra-red absorption spectroscopy (FTIR), linear...

We report a novel type of WO3 nanostructure, i.e. nanorolls obtained as a self-assembled thin film on a transparent conductive substrate. The mild conditions of preparation, avoiding the use of HCl, result in an eco-friendly hydrothermal method with reduced crystallization time. FESEM and HR-TEM show that WO3 nanocrystals are made of rolled nanoflakes with a telescope-like appearance at their t...

We present an organic light emitting diode with a perforated WO3 hole injection layer to improve the light extraction efficiency. The two-dimensionally perforated WO3 layer was fabricated by use of colloidal lithography. The light extraction efficiency was improved due to Bragg scattering of waveguide modes and surface plasmon polaritons, and the operating voltage was also decreased. As a resul...

Integration of non-noble transition metal oxides with graphene is known to construct high-activity electrocatalysts for oxygen evolution reduction (OER). In order avoid the complexity traditional synthesis process, a facile electrochemical method elaborately designed engineer efficient WO3-x/graphene (photo-)electrocatalyst OER by two-electrode electrolysis system, where graphite cathode exfoli...

Nanomaterial such as metals and metal oxide photocatalysts have emerged important tools for removing contaminants from wastewater antibacterial agents to prevent infections; this is mainly due their stability under different irradiation conditions. Herein, the catalytic antimicrobial activities of nanocrystalline silver (Ag), supported on tungsten (WO3) nanoparticles prepared using deposition-p...

Abstract WO3-TiO2 heterostructural nanofibers (HNFs) were prepared by a simple spin coating method. The structures, chemical constitutions and morphologies of the samples characterized various kinds techniques, including XRD, XPS, EDX, BET, SEM TEM. results suggested that WO3 nanoparticles with size range 20–30 nm decorated uniformly on surface TiO2 in composite thin films. XPS confirmed existe...

WO3 films were obtained via evaporation-induced self-assembly (EISA) using ionic surfactants such as long-chain ionic liquids 1-hexadecyl-3-methyl imidazolium chloride and bromide (C16mimCl and C16mimBr, respectively) and cetyltrimethylammonium chloride and bromide (CTAC and CTAB, respectively) as additives. Owing to the presence of the ionic surfactants, WO3 films crystallize in a preferred or...

One of the technological challenges for hydrogen sensors is long-term stability and reliability. In this article, the UV-light irradiation was introduced into the hydrogen sensing process based on water photolysis effect of Pt/WO3. Ascribing to that, fiber optic hydrogen sensor with Pt/WO3 nanosheets as the sensing element was demonstrated with significantly improved performance of stability. U...