Feng, Chaobo, Lu, Bing-Qiang, Fan, Yunshan et al. (11 more authors) (2024) Amorphous 1-D nanowires of calcium phosphate/pyrophosphate:A demonstration of oriented self-growth of amorphous minerals. JOURNAL OF COLLOID AND INTERFACE SCIENCE. pp. 960-970. ISSN 0021-9797
Abstract
Amorphous inorganic solids are traditionally isotropic, thus, it is believed that they only grow in a non-preferential way without the assistance of regulators, leading to the morphologies of nanospheres or irregular aggregates of nanoparticles. However, in the presence of (ortho)phosphate (Pi) and pyrophosphate ions (PPi) which have synergistic roles in biomineralization, the highly elongated amorphous nanowires (denoted ACPPNs) form in a regulator-free aqueous solution (without templates, additives, organics, etc). Based on thorough characterization and tracking of the formation process (e.g., Cryo-TEM, spherical aberration correction high resolution TEM, solid state NMR, high energy resolution monochromated STEM-EELS), the microstructure and its preferential growth behavior are elucidated. In ACPPNs, amorphous calcium orthophosphate and amorphous calcium pyrophosphate are distributed at separated but close sites. The ACPPNs grow via either the preferential attachment of ∼2 nm nanoclusters in a 1-dimension way, or the transformation of bigger nanoparticles, indicating an inherent driving force-governed process. We propose that the anisotropy of ACPPNs microstructure, which is corroborated experimentally, causes their oriented growth. This study proves that, unlike the conventional view, amorphous minerals can form via oriented growth without external regulation, demonstrating a novel insight into the structures and growth behaviors of amorphous minerals.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2023 Elsevier Inc. This is an author-produced version of the published paper. Uploaded in accordance with the University’s Research Publications and Open Access policy. |
Keywords: | Amorphous inorganic solids,Nanowires,Calcium phosphate,Calcium pyrophosphate,Oriented growth |
Dates: |
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Institution: | The University of York |
Academic Units: | The University of York > Faculty of Sciences (York) > Physics (York) |
Depositing User: | Pure (York) |
Date Deposited: | 13 Dec 2023 09:00 |
Last Modified: | 03 Nov 2024 01:30 |
Published Version: | https://doi.org/10.1016/j.jcis.2023.12.002 |
Status: | Published |
Refereed: | Yes |
Identification Number: | 10.1016/j.jcis.2023.12.002 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:206579 |