The contact of a steel electrode with water dispersion medium in an open-air system leads to the development of various polymorphic iron oxides and oxyhydroxides on the steel surface. Whereas the usage of distilled water causes the obtaining of Fe(II)-Fe(III) layered double hydroxides (green rust) as a primary mineral phase, but in the presence of inorganic 3d-metal water salt solutions, mixed ...

This study examines the design of a heat exchanger (HE) in production process nickel ferrite (NiFe2O4) nanoparticles using coprecipitation method by determining shell and tube exchanger. The Microsoft Excel application is used as manual calculating machine to facilitate analysis data calculations. research flowchart starts with literature study, preparation tools materials for design, calculati...

Developing a method for preparing Ni and Mn ferrites was the main objective of this study due to importance these materials in high-frequency applications. These were made by assisting combustion with dried leaves Corchorus olitorius then heating them 700 °C. Several methods, including FTIR, XRD, TEM, SEM/EDX, used characterize ferrites. The thermal behavior, surface magnetic properties as-prep...

It is well-known that nanoparticles could cause toxic effects in cells. Alloy nanoparticles with yet unknown health risk may be released from cardiovascular implants made of Nickel-Titanium or Cobalt-Chromium due to abrasion or production failure. We show the bio-response of human primary endothelial and smooth muscle cells exposed to different concentrations of metal and alloy nanoparticles. N...

in this paper, nickel oxide (nio) nanoparticles have been prepared by solid state thermal decomposition of an acyclic nickel(ii) complex (1,2-bis(2-formyl-3-methoxyphenyl)propane)nickel(ii) chloride, [nil]cl2, in an electrical furnace at optimal temperature, 450 ºc for 3.5 h. the nickel(ii) complex is obtained via solid state synthesis using nickel(ii) chloride and tetradentate o4 acyclic ligan...

The morphology, structure, and magnetic properties of nickel ferrite (NiFe2O4) films fabricated by radio frequency magnetron sputtering on Si(111) substrate have been investigated as functions of film thickness. Prepared films that have not undergone post-annealing show the better spinel crystal structure with increasing growth time. Meanwhile, the size of grain also increases, which induces th...