Morphological Evolution of Calcite Grown in Zwitterionic Hydrogels: Charge Effects Enhanced by Gel‐Incorporation

Author:

Yao Yuqing1ORCID,Ye Tao1,Ren Jie1ORCID,Li Hanying1ORCID

Affiliation:

1. MOE Key Laboratory of Macromolecular Synthesis and Functionalization International Research Center for X Polymers Department of Polymer Science and Engineering Zhejiang University 38 Zheda Road Hangzhou 310027 P. R. China

Abstract

AbstractThe incorporation of charged biomacromolecules is widely found in biomineralization. To investigate the significance of this biological strategy for mineralization control, gelatin‐incorporated calcite crystals grown from gelatin hydrogels with different charge concentrations along the gel networks are examined. It is found that the bound charged groups on gelatin networks (amino cations, gelatin‐NH3+ and carboxylic anions, gelatin‐COO) play crucial roles in controlling the single‐crystallinity and the crystal morphology. And the charge effects are greatly enhanced by the gel‐incorporation because the incorporated gel networks force the bound charged groups on them to attach to crystallization fronts. In contrast, ammonium ions (NH4+) and acetate ions (Ac) dissolve in the crystallization media do not exhibit the similar charge effects because the balance of attachment/detachment make them more difficult to be incorporated. Employing the revealed charge effects, the calcite crystal composites with different morphologies can be flexibly prepared.

Funder

National Key Research and Development Program of China

National Natural Science Foundation of China

Publisher

Wiley

Subject

General Chemistry,Catalysis,Organic Chemistry

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