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Influence of Reaction Parameters on the Microstructure of the Germanium Disulfide Gel
Author(s) -
Stanić Vesna,
Pierre Alain C.,
Etsell Thomas H.,
Mikula Randy J.
Publication year - 2000
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.2000.tb01465.x
Subject(s) - microstructure , germanium , amorphous solid , sol gel , materials science , toluene , particle size , chemical engineering , colloid , grain size , infrared spectroscopy , analytical chemistry (journal) , nuclear chemistry , chemistry , crystallography , chromatography , metallurgy , nanotechnology , organic chemistry , silicon , engineering
A GeS 2 gel was prepared by sol–gel processing of Ge(OEt) 4 and H 2 S in toluene solution. The effects of H 2 S and germanium ethoxide concentrations, concentration ratio, and temperature on the microstructure of the prepared GeS 2 gels were studied. It was found that the concentrations of the reactants had the most significant influence on primary particle size and gel morphology. The microstructure of the dried gels was characterized by nitrogen BET analysis, SEM, powder XRD analysis, and infrared spectroscopy. Results indicate that the GeS 2 gels are amorphous colloidal xerogels regardless of the reaction conditions and length of aging.