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Related Experiment Video

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Inorganic Porous Bulk Discs as a Matrix for Thin-Layer Chromatography and Translucent Hard Composite Materials.

Song Chen1, Jennifer Knaus1, Jun Luo2,3

  • 1Physical Chemistry, Department of Chemistry , University of Konstanz , Universitätsstr.10 , D-78457 Konstanz , Germany.

ACS Applied Materials & Interfaces
|December 12, 2019
PubMed
Summary

Researchers developed novel porous inorganic discs from magnesium-stabilized amorphous calcium carbonate (Mg-ACC), amorphous magnesium calcium silicate hydrate (MCSH), and hydroxyapatite (HAp). These discs offer a new method for evaluating biomolecule adsorption and can be used to create advanced composite materials.

Keywords:
composite materialsporous matrixsunglassthin-layer chromatographytranslucent materials

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Area of Science:

  • Materials Science
  • Biomaterials Engineering
  • Chromatography

Background:

  • Developing advanced materials for biomolecule interaction studies and novel composite fabrication is crucial.
  • Porous inorganic materials offer unique properties for adsorption and optical applications.

Purpose of the Study:

  • To investigate the chromatographic behavior and adsorption of biomolecules using novel porous inorganic discs.
  • To explore the fabrication of translucent composite materials with tunable optical and mechanical properties.

Main Methods:

  • Precipitation method to synthesize magnesium-stabilized amorphous calcium carbonate (Mg-ACC), amorphous magnesium calcium silicate hydrate (MCSH), and hydroxyapatite (HAp) particles.
  • Cold-pressing particles to form porous bulk discs with controlled pore size distribution.
  • Chromatographic analysis of rhodamine B, methylene blue, and ribonuclease adsorption.
  • Infiltration with benzyl ether and light-curing polymers to alter optical and mechanical properties.
  • Ion doping (Ni2+, Co2+, Fe3+, Eu3+) to tune optical characteristics.

Main Results:

  • Porous inorganic discs (Mg-ACC, MCSH, HAp) effectively serve as stationary phases for evaluating biomolecule adsorption affinities.
  • Infiltration with benzyl ether renders opaque discs translucent, while polymer infiltration creates hard, translucent composites.
  • Ion doping, particularly with iron in MCSH, yields nanocomposites with sharp UV-absorption edges (~400 nm).
  • Fabricated nanocomposite discs exhibit significant UV shielding and superior surface hardness compared to PMMA and commercial sunglasses.

Conclusions:

  • A simple, economical method is established for assessing biomolecule affinity to inorganic materials.
  • Novel translucent, hard composite materials with tunable optical properties can be fabricated.
  • The developed nanocomposite discs show potential for use as advanced UV-shielding sunglass materials.