An all-inorganic polynuclear unit consisting of an oxo-bridged binuclear ZrOCo(II) group coupled to an iridium oxide nanocluster (IrO(x)) was assembled on an SBA-15 silica mesopore surface. A photodeposition method was developed that affords coupling of the IrO(x) water oxidation catalyst with the Co donor center. The approach consists of excitation of the ZrOCo(II) metal-to-metal charge-transf...

Without Pt as cocatalyst, the photocatalytic hydrogen evolution activity of graphitic carbon nitride (g-C3N4) or even its composite is normally rather low (<1 μmol h(-1)). Exploring Pt-free cocatalysts to substitute precious Pt is of great importance in the photocatalytic field. In the present work, Ag2S-modified g-C3N4 (Ag2S/g-C3N4) composite photocatalysts were prepared via a simple precipita...

The integration of high-purity nano-objects on substrates remains a great challenge for addressing scaling-up issues in nanotechnology. For instance, grafting gold nanoparticles (NPs) on zinc oxide films, a major step process for catalysis or photovoltaic applications, still remains difficult to master. We report a modified photodeposition (P-D) approach that achieves tight control of the NPs s...

The development of efficient photocatalytic routines for producing hydrogen is of great importance as society moves away from energy sources derived from fossil fuels. Recent studies have identified that the addition of metal nanoparticles to TiO2 greatly enhances the photocatalytic performance of these materials towards the reforming of alcohols for hydrogen production. The core-shell structur...

When a proton reduction cocatalyst is loaded on an n-type semiconductor for photocatalytic overall water splitting (POWS), the location of oxidation sites generally considered at surface due to upward band-bending which may ease transfer photogenerated holes surface. However, this not case Pt/SrTiO3, model based photocatalyst POWS. It was found that are more readily accumulated interface betwee...

In this study, a g-C3N4-Cu2O-TiO2 photocatalyst with novel three-dimensional ordered macroporous (3DOM) structure was successfully prepared using sacrificial template strategy and photodeposition method. The influence of the special porous cross pore channels on photocatalytic properties as-prepared sample studied in detail. Compared original (TiO2 3 wt% Pt), exhibited higher specific surface a...

In this work, we report the experimental study of a Q-switched optical fiber laser based on graphene oxide quantum dots (GOQDs) as saturable absorber (SA). GOQDs are fabricated by carbonization and exfoliation electrospun polyacrylonitrile (PAN) fibers. The results Fourier Transform Infrared Spectroscopy (FTIR) showed bands caused CHs C O groups associated with GOQDs. Raman spectrum typical G D...

Paramagnet spinel NiFe2O4 nanocrystals were synthesized using the hydrothermal route and put in contact with anatase TiO2 PC500; mixture of semi-conductors was employed as substrate to deposit reduced Graphene Oxide (rGO) sheets synthetised via Hummers modified method. Several rGO mass amounts ‘x’ deposited (x = 0, 5, 10, 15% 20%). These steps synthesis followed by surface decoration Ag metalli...

Monoclinic scheelite bismuth vanadate (BVO) microballs were prepared by a facile hydrothermal method and subsequently modified with 2 wt% of noble metals (NM = Au, Ag, Cu, Pt Pd) photodeposition route. All materials characterized diffuse reflectance spectroscopy (DRS), X-ray diffraction (XRD), photoelectron (XPS) Fourier-transform infrared (FTIR). The photocatalytic performance was investigated...