Sedimentation of Silver and Palladium on the Silicon Surface by Galvanic Replacement

Maryana Shepida1 maryana_shepida [at] ukr.net
Oksana Dobrovetska2 oksanadobrovetska [at] gmail.com
  1. Chemistry and Technology of Inorganic Substances Department, Lviv Polytechnic National University, Ukraine, Lviv, S. Bandery street 12
  2. Chemical Engineering Department, Lviv Polytechnic National University, Ukraine, Lviv, S. Bandery street 12
Abstract 

The results of investigations of the process of precipitation of micro- and nanosized particles of silver and palladium on the surface of silicon by electroplating substitution are presented. The conditions of the process, in which a nanosized precipitate is formed in the environment of organic aprotic solvents, is established. The influence of the concentration of metal ions in the solution, temperature and duration of galvanic substitution on the morphology of the modified surface, the geometry of the sediment particles and their distribution in size have been studied.

Keywords 
galvanic replacement
nanoparticles
silver
palladium
silicon surface
aprotic solvents
References 

[1] S. Djokić, K. Cadien, “Galvanic Deposition of Silver on Silicon Surfaces from Fluoride Free Aqueous Solutions”, ECS Transactions, vol. 4, pp.11–13, 2015.

[2] Q. Wei, Y.-Sh. Shi, K.-Q. Sun, B.-Q. Xu, “Pd-on-Si catalysts prepared via galvanic displacement for the selective hydrogenation of para– chloronitrobenzene”, Chem. Commun., vol. 52, pp.3026-3029, 2016.

[3] M. Tsuji, M. Hamasaki et al., “Synthesis of Pt–Ag alloy triangular nanoframes by galvanic replacement reactions followed by saturated NaCl treatment in an aqueous solution”, Materials Let., vol. 121, pp.113– 117, 2014.

[4] L. Santinacci, T. Djenizian et al., “Selective palladium electrochemical deposition onto AFMscratched silicon surfaces”, Electrochim. Acta, vol. 48, pp.3123–3130, 2003.

[5] S. S. Djokic, “Galvanic Deposition of Copper, Silver and Gold on Silicon Surfaces from Fluoride Free Aqueous Solutions”, ECS Transactions, vol. 75, pp.15–25, 2013

[6] T. Ego, T. Hagihara et al., “AFM Analysis for Initial Stage of Electroless Displacement Deposition of Silver on Silicon Surface”, ECS Transactions, vol. 50, pp.143– 153, 2013.

[7] O. Kuntyi, O. Dobrovetska et al., “Palladium deposition on magnesium in PdCl2 in DMF”, Chem. Chem. Technol., vol. 8, pp.193– 196, 2014.

[8] O. Ya. Dobrovets’ka, O. I. Kuntyi et al., “Galvanic Deposition of Gold and Palladium on Magnesium by the method of Substitution”, Materials Sci., vol. 51, pp.418– 423, 2015.

[9] I. Kosuke, “Electrochemistry in Nonaqueous Solutions”, Copyright Wiley– VCH Verlag GmbH & Co. KGaA, 2002