Hydrogel-Mediated Mineralization Generates Oriented Crystalline Films Comprising Granular-Rhombohedral Heterogeneous
Yu-Xuan Feng1, Yue-E Wen1, Xiang-Dong Liu1
1College of Materials, Xiamen University, Xiamen 361005, P.R. China.
Langmuir : the ACS Journal of Surfaces and Colloids
|June 16, 2021
Summary
Controlling hydrogel cationic diffusivity enables the creation of complex, self-organized crystalline materials with tailored heterogeneous structures. This breakthrough offers a rational approach to designing functional advanced materials.
Area of Science:
- Materials Science
- Crystallography
- Chemical Engineering
Background:
- Gel-mediated crystallization is key for self-organized materials.
- Hydrogel mineralization for complex structures is currently empirical.
- Developing bottom-up approaches for functional materials requires precise control.
Purpose of the Study:
- To demonstrate how hydrogel cationic diffusivity controls heterogeneous crystallization.
- To establish a rational morphogenetic approach for crystalline material design.
- To correlate hydrogel properties with crystallization outcomes.
Main Methods:
- Utilizing hydrogels with controlled cationic diffusivity.
- Analyzing the consecutive growth of granular-rhombohedral structures.
- Evaluating physicochemical properties of hydrogels and crystallization products.
Main Results:
- Hydrogels with specific cationic diffusivity trigger consecutive growth of oriented, heterogeneous structures.
- Controllable morphogenesis yields continuous calcitic CaCO3 films with spatial heterogeneity.
- Granular layer thickness indicates crystallization retardancy, correlating with hydrogel diffusivity.
Conclusions:
- Hydrogel cationic diffusivity directly influences the formation of tailored heterogeneous crystalline structures.
- This work provides a rational pathway for designing complex crystalline materials.
- The findings advance bottom-up fabrication of functional self-organized materials.
