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Control of Calcium Carbonate Polymorphism and Morphology through Biomimetic Mineralization by means of Nanotechnology
Author(s) -
Ichikawa Kazuhiko,
Shimomura Noriyuki,
Yamada Masanori,
Ohkubo Naoki
Publication year - 2003
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.200204534
Subject(s) - vaterite , calcium carbonate , calcite , zinc , mineralization (soil science) , chemistry , carbonate , substrate (aquarium) , calcium , aragonite , chemical engineering , biomineralization , carbonic anhydrase , aqueous solution , inorganic chemistry , mineralogy , organic chemistry , enzyme , geology , oceanography , nitrogen , engineering
In vitro biomimetic mineralization by means of nanotechnology allows the formation of calcium carbonate polymorphs at low temperatures (<25 °C) under a CO 2 atmosphere of 500–1500 ppm . A two‐dimensional zinc‐ion ordered array (zinc array), which acts as an active‐site mimic of carbonic anhydrase, has been prepared by immersing the self‐organized monolayer of 3‐(2‐imidazolin‐1‐y)propyltriethosilane on mica (ImSi substrate) into aqueous zinc solution. The zinc array mounted on the ImSi substrate catalyzed the conversion from CO 2 to HCO 3 − , and accelerated the formation of calcium carbonate. In situ X‐ray diffraction data of the formed calcium carbonate on the poly( L ‐aspartate)‐coated chitin substrate (pAsp substrate), with calcium ion‐recognition sites, demonstrated that the interaction between the zinc array and pAsp substrates formed both vaterite and calcite at low temperature (15 °C) and mainly vaterite at 25 °C; this interaction also controlled the morphology of calcium carbonate formed on pAsp substrate.