Recovery of Noble Metals using Electroless Displacement Deposition onto Silicon Powder

Electroless Deposition and Electroplating of Metals

Copper deposition onto silicon by galvanic displacement: Effect of Cu complex formation in NH4F solutions

Copper was deposited onto rotating Si substrates by galvanic displacement in 6.0M NH4F to determine the effects of Cu complex formation on deposition rates. Deposition rates decreased with increasing rotation speed, indicating that Cu(I) intermediates, stabilized by NH3, diffuse away from the Cu surface before they reduce to Cu(0). UV–visible spectra of contacting solutions and direct measureme...

A Study on Electroless Deposition of Nickel on Nano Alumina Powder Under Different Sensitization Conditions

This paper deals with the preparation and characterization of Nickel-coated Alumina ceramic particles by Electroless Plating Technique. Nanosized α-Al2O3 powders of about 50nm in diameter are used for plating. The bath for Electroless Nickel Plating is prepared with NiCl2.6H2O, C6H5NaO7.H2O, NH4Cl and NaH2PO2.H2O. A bath temperature of 85°C, pH value of 8 and stirring time of 20 min is consider...

Electroless deposition of Au onto Si(111) studied by surface second harmonic generation

Electroless deposition of Au onto hydrogen-terminated Si(111) from aqueous HF solutions has been studied by Rutherford backscattering (RBS) and in situ surface second harmonic (SH) generation. The SH signal as a function of time goes through a maximum which becomes stronger and occurs at shorter times as the HF concentration is increased. This can be explained through resonant enhancement of th...

Noble metals in oncology

Worldwide research groups are searching for anticancer compounds, many of them are organometalic complexes having platinum group metals as their active centers. Most commonly used cytostatics from this group are cisplatin, carboplatin and oxaliplatin. Cisplatin was used fot the first time in 1978, from this time many platinum derivatives were created. In this review we present biological proper...