Influence of palladium particles impregnation on hydrogen behavior in meso-porous silicon

Мова статті: 
Англійська
Автор(и) статті: 
A. I. Manilov, S. A. Alekseev, V. A. Skryshevsky, S. V. Litvinenko, G. V. Kuznetsov, V. Lysenko
Вихідні данні статті: 
Journal of Alloys and Compounds, 492 (2010) 466–472 .
Назва журналу: 
Journal of Alloys and Compounds
Рік публікації: 
2010
Volume: 
492
Issue: 
1-2
Ключові слова: 
hydrides, composite material, silicon, porous material, palladium, mesoporosity, hydrogen storage, pretreatment, desorption, adsorption, fourier-transformed infrared spectrometry, scanning electron microscopy, optical microscopy, electroless plating
Ключове слово: 
hydrides
Ключове слово: 
composite material
Ключове слово: 
silicon
Ключове слово: 
porous material
Ключове слово: 
palladium
Ключове слово: 
mesoporosity
Ключове слово: 
hydrogen storage
Ключове слово: 
pretreatment
Ключове слово: 
desorption
Ключове слово: 
adsorption
Ключове слово: 
fourier-transformed infrared spectrometry
Ключове слово: 
scanning electron microscopy
Ключове слово: 
optical microscopy
Ключове слово: 
electroless plating

The composite materials based on porous silicon (PS) with palladium particles incorporated inside the pores were prepared by means of Pd electroless deposition and characterized by optical microscopy, scanning electron microscopy and FTIR spectroscopy. Adsorption and desorption of molecular hydrogen at 50 kPa and ambient temperature as well as chemical extraction of H 2 during the reaction of initial PS and PS + Pd composites with water and base were studied. Reversible uptake of molecular H 2 , probably due to the formation of palladium hydride, was detected for PS + Pd composites, otherwise the initial PS was found to be inactive to the H 2 under ambient conditions. The composites PS + Pd react with water much slower and release less H 2 in compare with initial PS, probably due to partial pore blockage by Pd. However, the pretreatment of the composites in gaseous H 2 increases the volume of H 2 evolving in the reaction with H 2 O at ambient temperature.

Назва підрозділу: 
Кафедра нанофізики конденсованих середовищ
Кафедра супрамолекулярної хімії та біохімії
НДЧ
ІНСТИТУТ ВИСОКИХ ТЕХНОЛОГІЙ Матеріали дозволено використовувати на умовах GNU FDL без незмінюваних секцій та Creative Commons Attribution/Share-Alike
Дизайн: Інститут високих технологій
Ivan Ivanov