The Morphology and Conductive Properties of Composite Material SiO2 – C

Abstract

The article explores the structure, morphology and conductive properties of composite material SiO2 – C using XRD, SAXS, low-temperature nitrogen adsorption, and impedance spectroscopy methods. It is set that SiO2 – C composite obtained by thermolytic decomposition of D-lactose, previously chemisorbed on fumed silica nanoparticles surface, has an open porous structure, in which mesopores of 6-12 nm in size are dominate. At weight ratio SiO2/C = 5/1 nanocrystallites of carbon phase in form of lamellar sheets of 0,4 × 0,4 × 5,0 nm3 in size contact with entire silica surface that results in composite material conductivity is 49 Оhm-1·m-1.

Morphological and Electrochemical Properties of the Lactose-derived Carbon Electrode Materials

“…This is due to the fact that the texture of lactose carbon is constructed of very small, 5.0 × 0.4 × 0.4 nm 3 layered crystallites, and the texture of sucrose carbon -largely of globular 2.4-3.0 nm microcrystals [29]. Actually, each microcrystal of lactose carbon is formed of two graphene sheets.…”