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Issue 17, 2015
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Controlled synthesis of monodisperse α-calcium sulfate hemihydrate nanoellipsoids with a porous structure

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Abstract

We report a facile and green chemical solution approach to synthesize monodisperse α-calcium sulfate hemihydrate (α-HH) nanoellipsoids with a length of 600 nm and a width of 300 nm by simply mixing Ca2+ and SO42− glycerol–water precursor solutions in the presence of Na2EDTA. The α-HH nanoellipsoid is formed through a Na2EDTA-mediated self-assembly of small primary building blocks (α-HH domains: ∼14 nm). The study on the morphological evolution of α-HH reveals that the controlled synergy of supersaturation (precursor concentration) and Na2EDTA is crucial for the development of α-HH into nanoellipsoids. Further thermal annealing of the nanoellipsoid could make the α-HH domains transit into calcium sulfate anhydrites and grow up, generating the gaps between them and resulting in a porous structure. This work paves a new way for preparing high-quality α-HH nanoellipsoids with a monodisperse nanosize and a porous structure, promising their future application in many fields such as biomedicine.

Graphical abstract: Controlled synthesis of monodisperse α-calcium sulfate hemihydrate nanoellipsoids with a porous structure

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Publication details

The article was received on 08 Feb 2015, accepted on 10 Mar 2015 and first published on 09 Apr 2015


Article type: Paper
DOI: 10.1039/C5CP00804B
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Citation: Phys. Chem. Chem. Phys., 2015,17, 11509-11515
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    Controlled synthesis of monodisperse α-calcium sulfate hemihydrate nanoellipsoids with a porous structure

    G. Jiang, Q. Chen, C. Jia, S. Zhang, Z. Wu and B. Guan, Phys. Chem. Chem. Phys., 2015, 17, 11509
    DOI: 10.1039/C5CP00804B

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