Growth of aragonite calcium carbonate nanorods in the biomimetic anodic aluminum oxide template

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

In this study, a biomimetic template was prepared and applied for growing calcium carbonate (CaCO3) nanorods whose shape and polymorphism were controlled. A biomimetic template was prepared by adsorbing catalytic dipeptides into the pores of an anodic aluminum oxide (AAO) membrane. Using this peptide-adsorbed template, mineralization and aggregation of CaCO3 was carried out to form large nanorods in the pores. The nanorods were aragonite and had a structure similar to nanoneedle assembly. This aragonite nanorod formation was driven by both the AAO template and catalytic function of dipeptides. The AAO membrane pores promoted generation of aragonite polymorph and guided nanorod formation by guiding the nanorod growth. The catalytic dipeptides promoted the aggregation and further dehydration of calcium species to form large nanorods. Functions of the AAO template and catalytic dipeptides were verified through several control experiments. This biomimetic approach makes possible the production of functional inorganic materials with controlled shapes and crystalline structures.

Original languageEnglish
Pages (from-to)1741-1746
Number of pages6
JournalJournal of Crystal Growth
Volume312
Issue number10
DOIs
Publication statusPublished - 2010 May 1

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aragonite
Aluminum Oxide
Calcium Carbonate
calcium carbonates
biomimetics
Biomimetics
Calcium carbonate
Nanorods
nanorods
templates
aluminum oxides
Aluminum
Dipeptides
Oxides
Polymorphism
porosity
Agglomeration
Nanoneedles
membranes
Membranes

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Inorganic Chemistry
  • Materials Chemistry

Cite this

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abstract = "In this study, a biomimetic template was prepared and applied for growing calcium carbonate (CaCO3) nanorods whose shape and polymorphism were controlled. A biomimetic template was prepared by adsorbing catalytic dipeptides into the pores of an anodic aluminum oxide (AAO) membrane. Using this peptide-adsorbed template, mineralization and aggregation of CaCO3 was carried out to form large nanorods in the pores. The nanorods were aragonite and had a structure similar to nanoneedle assembly. This aragonite nanorod formation was driven by both the AAO template and catalytic function of dipeptides. The AAO membrane pores promoted generation of aragonite polymorph and guided nanorod formation by guiding the nanorod growth. The catalytic dipeptides promoted the aggregation and further dehydration of calcium species to form large nanorods. Functions of the AAO template and catalytic dipeptides were verified through several control experiments. This biomimetic approach makes possible the production of functional inorganic materials with controlled shapes and crystalline structures.",
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Growth of aragonite calcium carbonate nanorods in the biomimetic anodic aluminum oxide template. / Lee, Inho; Han, Haksoo; Lee, Sangyup.

In: Journal of Crystal Growth, Vol. 312, No. 10, 01.05.2010, p. 1741-1746.

Research output: Contribution to journalArticle

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