Heterogeneous nucleation of calcium oxalate on native oxide surfaces [electronic resource].

Published:: Washington, D.C. : United States. Dept. of Energy, 1994.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
Physical Description:: 6 pages : digital, PDF file
Additional Creators:: Pacific Northwest Laboratory, United States. Department of Energy, and United States. Department of Energy. Office of Scientific and Technical Information

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Summary:

The aqueous deposition of calcium oxalate onto colloidal oxides has been studied as a model system for understanding heterogeneous nucleation processes of importance in biomimetic synthesis of ceramic thin films. Calcium oxalate nucleation has been monitored by measuring induction times for nucleation using Constant Composition techniques and by measuring nucleation densities on extended oxide surfaces using an atomic force microscope. Results show that the dependence of calcium oxalate nucleation on solution supersaturation fits the functional form predicted by classical nucleation theories. Anionic surfaces appear to promote nucleation better than cationic surfaces, lowering the effective energy barrier to heterogeneous nucleation.

Report Numbers:

E 1.99:pnl-sa--23282
E 1.99: conf-9404213--1
conf-9404213--1
pnl-sa--23282

Subject(s):

Materials Science

Other Subject(s):

Note:

Published through SciTech Connect.
04/01/1994.
"pnl-sa--23282"
" conf-9404213--1"
"DE94018725"
Monitored retrievable storage spring meeting,San Francisco, CA (United States),4-8 Apr 1994.
Campbell, A.A.; Bunker, B.C.; Graff, G.L.; Song, L.; Pattillo, M.J.

Funding Information:

AC06-76RL01830
FG06-89ER75522

View MARC record | catkey: 14452587