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Feng Y, Wu D, Knaus J, Keßler S, Ni B, Chen Z, Avaro J, Xiong R, Cölfen H, Wang Z. A Bioinspired Gelatin-Amorphous Calcium Phosphate Coating on Titanium Implant for Bone Regeneration. Adv Healthc Mater 2023; 12:e2203411. [PMID: 36944062 DOI: 10.1002/adhm.202203411] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2022] [Revised: 03/11/2023] [Indexed: 03/23/2023]
Abstract
Biocompatible and bio-active coatings can enhance and accelerate osseointegration via chemical binding onto substrates. Amorphous calcium phosphate (ACP) has been shown as a precursor to achieve mineralization in vertebrates and invertebrates under the control of biological macromolecules. This work presents a simple bioinspired Gelatin-CaPO4 (Gel-CaP) composite coating on titanium surfaces to improve osseointegration. The covalently bound Gel-CaP composite is characterized as an ACP-Gel compound via SEM, FT-IR, XRD, and HR-TEM. The amorphous compound coating exhibits a nanometer range thickness and improved elastic modulus, good wettability, and nanometric roughness. The amount of grafted carboxyl groups and theoretical thickness of the coatings are also investigated. More importantly, MC3T3 cells, an osteoblast cell line, show excellent cell proliferation and adhesion on the Gel-CaP coating. The level of osteogenic genes is considerably upregulated on Ti with Gel-CaP coatings compared to uncoated Ti, demonstrating that Gel-CaP coatings possess a unique osteogenic ability. To conclude, this work offers a new perspective on functional, bioactive titanium coatings, and Gel-CaP composites can be a low-cost and promising candidate in bone regeneration.
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Affiliation(s)
- Yanhuizhi Feng
- Department of Implantology, Stomatological Hospital and Dental School of Tongji University, Shanghai Engineering Research Center of Tooth Restoration and Regeneration, 200072, Shanghai, China
- Department of Chemistry, Physical Chemistry, University of Konstanz, Universitätsstrasse 10, 78457, Konstanz, Germany
| | - Di Wu
- Department of Implantology, Stomatological Hospital and Dental School of Tongji University, Shanghai Engineering Research Center of Tooth Restoration and Regeneration, 200072, Shanghai, China
| | - Jennifer Knaus
- Department of Chemistry, Physical Chemistry, University of Konstanz, Universitätsstrasse 10, 78457, Konstanz, Germany
| | - Sascha Keßler
- Department of Chemistry, Physical Chemistry, University of Konstanz, Universitätsstrasse 10, 78457, Konstanz, Germany
| | - Bing Ni
- Department of Chemistry, Physical Chemistry, University of Konstanz, Universitätsstrasse 10, 78457, Konstanz, Germany
| | - ZongKun Chen
- Department of Chemistry, Physical Chemistry, University of Konstanz, Universitätsstrasse 10, 78457, Konstanz, Germany
| | - Johnathan Avaro
- EMPA, Material and Science Technology, Lerchenfeldstrasse 5, 9014, St. Gallen, Switzerland
| | - Rui Xiong
- Department of Chemistry, Physical Chemistry, University of Konstanz, Universitätsstrasse 10, 78457, Konstanz, Germany
| | - Helmut Cölfen
- Department of Chemistry, Physical Chemistry, University of Konstanz, Universitätsstrasse 10, 78457, Konstanz, Germany
| | - Zuolin Wang
- Department of Implantology, Stomatological Hospital and Dental School of Tongji University, Shanghai Engineering Research Center of Tooth Restoration and Regeneration, 200072, Shanghai, China
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Keßler S, Reinalter ER, Schmidt J, Cölfen H. Environmentally Benign Formation of Nickel Hexacyanoferrate-Derived Mesoframes for Heterogeneous Catalysis. Nanomaterials (Basel) 2021; 11:nano11102756. [PMID: 34685196 PMCID: PMC8537782 DOI: 10.3390/nano11102756] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/04/2021] [Accepted: 10/13/2021] [Indexed: 12/03/2022]
Abstract
The tetramethylammonium hydroxide (TMAH)-controlled alkaline etching of nickel hexacyanoferrate (NiHCF) mesocrystals is explored. The alkaline etching enables the formation of hollow framework structures with an increased surface area, the exposure of active Ni and Fe sites and the retention of morphology. The ambient reaction conditions enable the establishment of a sustainable production. Our work reveals novel perspectives on the eco-friendly synthesis of hollow and colloidal superstructures for the efficient degradation of the organic contaminants rhodamine-B and bisphenol-A. In the case of peroxomonosulfate (PMS)-mediated bisphenol-A degradation, the rate constant of the etched mesoframes was 10,000 times higher indicating their significant catalytic activity.
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Affiliation(s)
- Sascha Keßler
- Physical Chemistry, Department of Chemistry, University of Konstanz, Universitätsstrasse 10, D-78457 Konstanz, Germany; (S.K.); (E.R.R.)
| | - Elrike R. Reinalter
- Physical Chemistry, Department of Chemistry, University of Konstanz, Universitätsstrasse 10, D-78457 Konstanz, Germany; (S.K.); (E.R.R.)
| | - Johannes Schmidt
- Department of Chemistry, Technical University of Berlin, Hardenbergstrasse 40, D-10623 Berlin, Germany;
| | - Helmut Cölfen
- Physical Chemistry, Department of Chemistry, University of Konstanz, Universitätsstrasse 10, D-78457 Konstanz, Germany; (S.K.); (E.R.R.)
- Correspondence:
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Keßler S, González-Rubio G, Reinalter ER, Kovermann M, Cölfen H. Synthesis of nickel hexacyanoferrate nanocubes with tuneable dimensions via temperature-controlled Ni 2+-citrate complexation. Chem Commun (Camb) 2020; 56:14439-14442. [PMID: 33146182 DOI: 10.1039/d0cc04628k] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
The citrate-assisted growth of nickel hexacyanoferrate (NiHCF) nanocubes was investigated. Control over the complexation of Ni2+ ions with citrate at different temperatures enabled fine tuning of the nanocrystal (NC) dimensions and their self-assembly into mesocrystals. Our results introduce new concepts towards the synthesis of NiHCF NCs, potentially applicable to other members of the Prussian blue analogues family.
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Affiliation(s)
- Sascha Keßler
- Physical Chemistry, Department of Chemistry, University of Konstanz, Universitätsstrasse 10, D-78457 Konstanz, Germany.
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