Titanium (Ti) and its alloys have been widely used in clinics for years. However, their bio-inert surface challenges application in patients with compromised surgical conditions. Numerous studies were conducted to modify the surface topography and chemical composition of Ti substrates, for the purpose of obtaining antibacterial, angiogenic, and osteogenic activities. In this study, using green ...

A Cu-doped zeolite ZSM-5 (Cu-ZSM-5-M) with a micro-meso-macroporous structure was directly synthesized, and it exhibits excellent catalytic activity and good recyclability in the cross-coupling of aryl halides with diphenyl disulfides. This feature should be attributed to the structural characteristics of meso-macropores and homogeneous dispersion of active Cu(δ+) (δ < 2) species in Cu-ZSM-5-M.

Grain boundary and surface segregation of Bi in Cu were investigated under identical conditions. Cu bicrystals containing deliberately made internal cavities at the interfaces were doped with Bi, annealed at different temperatures, and broken in an Auger microprobe. The segregation level at the free surfaces was found to be higher than that at grain boundaries. Grain-boundary and surface segreg...

The design of synthetic nanoparticles (NPs) capable of recognizing given chemical entities in a specific and predictable manner is of great fundamental and practical importance. Herein, we report a simple, fast, water-soluble, and green phosphine free colloidal synthesis route for the preparation of multifunctional enzyme-capped ZnS bionanocomposites (BNCs) with/without transitional metal-ion d...

P-type transparent conducting films of nanocrystalline (CuS)x:(ZnS)1-x were synthesized by facile and low-cost chemical bath deposition. Wide angle X-ray scattering (WAXS) and high resolution transmission electron microscopy (HRTEM) were used to evaluate the nanocomposite structure, which consists of sub-5 nm crystallites of sphalerite ZnS and covellite CuS. Film transparency can be controlled ...

Highly photoluminescent and water dispersible ternary alloyed Mn-doped ZnSeS core/shell Mn:ZnSeS/ZnS quantum dots (QDs) with pure dopant emission were synthesized through a simple aqueous route using thiolactic acid (2-MPA) as capping ligand. Transmission electron microscopy X-ray diffraction show that Mn:ZnSeS nanocrystals are of spherical shape, diameter 2.4 nm cubic zinc blende structure. Wi...

Structural and optical properties of ZnO1-хSх (0 ≤ x ≤ 1.0) thin films grown onto sapphire substrates (с-Al2O3) at 300 C by radio frequency (rf) magnetron sputtering of ZnS ceramic target are studied. A possibility of purposeful controlling sulfur content and, as consequence, ZnO1-хSх band gap energy via changing the ratio of the partial pressures of argon and oxygen are revealed. Linear depen...

The nanoparticles of gold doped with various percentage of copper (Cu 10%, 25%, 75%) were synthesized by wet-chemical method at room temperature. Copper (II) sulfate and gold (III) chloride trihydride was taken as the metal precursor and ascorbic acid as a reducing agent and anhydride maleic as surfactant. The reaction is performed with high-speed stirring at room temperature under nitrogen atm...