We examined the catalytic effect of nanoparticle 3d-transition metals on hydrogen desorption (HD) properties of MgH(2) prepared by mechanical ball milling method. All the MgH(2) composites prepared by adding a small amount of nanoparticle Fe(nano), Co(nano), Ni(nano), and Cu(nano) metals and by ball milling for 2 h showed much better HD properties than the pure ball-milled MgH(2) itself. In par...

In this report is discussed a novel, easy, and general synthesis method to prepare zerovalent iron (ZVI) and copper (ZV Cu) nanoparticles (NPs), from colloid dispersions in an environmental friendly organic solvent, ethylene glycol (EG). Conventional metallic salts are used as nanoparticle precursors; sodium borohydride (NaBH4) is the reducing agent, and triethylamine (TEA) is used as the nanop...

A one step approach to prepare hybrid nanoparticle embedded polymer fibres using pressurised gyration is presented. Two types of novel antimicrobial nanoparticles and poly(methylmethacrylate) polymer were used in this work. X-ray diffraction analysis of the nanoparticles revealed Ag, Cu and W are the main elements present in them. The concentration of the polymer solution and the nanoparticle c...

Bimetallic catalysts are often more active and/or selective than their monometallic counterparts. The behaviour of such is frequently strongly dependent on the molar ratio two elements as well nanoparticle size and interaction with support material. X-ray photoelectron spectroscopy (XPS) an excellent surface analytical technique for probing electronic properties catalytic systems. When a mixtur...

In this work, Ag-Cu nanoparticles (with different percentages of copper, 10%, 25%, 50%, 75% Cu) were synthesized by wet chemical method. Copper(II) sulfate and silver nitrate were taken as metal precursors, ascorbic acid as reducing agent and anhydride maleic (MA) as a modifier. The prepared nanoparticles were characterized by means of X-ray diffraction (XRD) technique and scanning electron mic...

This study aims to analytically measure the fully developed laminar flow and heat transfer water-based nanofluids, Cu, CuO, Al2O3, within a micropipe with constant flux, under temperature jump slip rate boundary conditions. Knudsen number, nanoparticle volumes, ratios of liquid layer thickness particle radius are assumed, 0, 0.02, 0.04; 0%, 4%, %8, 0.1, 0.2, 0.4, respectively. The findings sugg...

In this work, a group-11 metal nanoparticle-embedded, graphitic carbon nitride-based, resistive-type sensor was developed for room temperature acetone sensing. We synthesized pure and transition (Cu, Ag Au) nanoparticles embedded in nitride (gCN) by thermal polycondensation chemical reduction methods. The material characterized using UV/visspectroscopy, FTIRspectroscopy, XRD, HRTEM, FESEM, EDS ...