Tandem-biocatalysis reactors constructed by topological evolution of CaCO3 particles into hollow metal hydroxide spheres

Sang Yeong Han, Nayoung Kim, Gyeongwon Yun, Hojae Lee and Insung S. Choi ()
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Sang Yeong Han: Center for Cell-Encapsulation Research, Department of Chemistry, KAIST
Nayoung Kim: Center for Cell-Encapsulation Research, Department of Chemistry, KAIST
Gyeongwon Yun: Center for Cell-Encapsulation Research, Department of Chemistry, KAIST
Hojae Lee: Hallym University
Insung S. Choi: Center for Cell-Encapsulation Research, Department of Chemistry, KAIST

Nature Communications, 2023, vol. 14, issue 1, 1-8

Abstract: Abstract Despite remarkable advances in the design and synthesis of hollow inorganic spheres (HISs), the harsh synthetic conditions have precluded the applications of HISs to biochemical and biological fields. Herein we report a biocompatible strategy for synthesizing metal hydroxide HISs (MH-HISs) by simply mixing CaCO3 particles with metal ions in water. The ion-exchange reaction between Ca2+ and metal ions leads to the structural and chemical evolution from solid CaCO3 particles to hollow MH-HISs via core-shell and yolk-shell structures, while enabling the encapsulation of enzymes to the shells without loss of catalytic activities. The biocompatible protocol makes multienzymatic cascade reactions achievable, with great recyclability due to mechanical durability of MH-HISs.

Date: 2023
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DOI: 10.1038/s41467-023-42649-w

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