Small-angle neutron scattering study of activated carbon cloth and ammonium persulfate-modified activated carbon cloth: Effect of oxygen content

摘要

Small-angle neutron scattering (SANS) patterns of as-received, oxidized, and thermally reduced FM1/250 activated carbon cloth (ACC) samples are compared to determine the effects of surface chemistry on scattering. Porosity analyses show minimal effect on pore size distribution from oxidation, but an increase in micropore volume on beat treatment. SANS suggests an increase in localized order within the treated samples when compared with graphite cloth patterns. The ACC exhibits Porod scattering at q-ranges < 0.3 nm(-1); the graphite cloth exhibits the same at q-ranges > 1.0 nm(-1). A cylindrical model reproduces the scattering patterns in the micropore equivalent dimensions, q > 0.5nm(-1). (c) 2006 Elsevier B.V. All rights reserved.