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Moreno YP, de Escobar CC, Skovroinski E, Weibel DE, dos Santos JH. TiO2/SiO2 dopant-free nanophotocatalysts for highly efficient photocatalytic water splitting: Challenging traditional TiO2-based systems. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2022.133792] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
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PEGylated and zwitterated silica nanoparticles as doxorubicin carriers applied in a breast cancer cell line: Effects on protein corona formation. J Drug Deliv Sci Technol 2022. [DOI: 10.1016/j.jddst.2022.103325] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Hybrid films of cellulose nanofibrils, chitosan and nanosilica—Structural, thermal, optical, and mechanical properties. Carbohydr Polym 2019; 218:87-94. [DOI: 10.1016/j.carbpol.2019.04.065] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2019] [Revised: 04/18/2019] [Accepted: 04/18/2019] [Indexed: 12/26/2022]
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Rabel M, Warncke P, Grüttner C, Bergemann C, Kurland HD, Müller R, Dugandžić V, Thamm J, Müller FA, Popp J, Cialla-May D, Fischer D. Simulation of the long-term fate of superparamagnetic iron oxide-based nanoparticles using simulated biological fluids. Nanomedicine (Lond) 2019; 14:1681-1706. [DOI: 10.2217/nnm-2018-0382] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Aim: To simulate the stability and degradation of superparamagnetic iron oxide nanoparticles (MNP) in vitro as part of their life cycle using complex simulated biological fluids. Materials & methods: A set of 13 MNP with different polymeric or inorganic shell materials was synthesized and characterized regarding stability and degradation of core and shell in simulated biological fluids. Results: All MNP formulations showed excellent stability during storage and in simulated body fluid. In endosomal/lysosomal media the degradation behavior depended on shell characteristics (e.g., charge, acid-base character) and temperature enabling the development of an accelerated stress test protocol. Conclusion: Kinetics of transformations depending on the MNP type could be established to define structure-activity relationships as prediction model for rational particle design.
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Affiliation(s)
- Martin Rabel
- Pharmaceutical Technology & Biopharmacy, Friedrich Schiller University Jena, Lessingstraße 8, 07743 Jena, Germany
| | - Paul Warncke
- Pharmaceutical Technology & Biopharmacy, Friedrich Schiller University Jena, Lessingstraße 8, 07743 Jena, Germany
| | - Cordula Grüttner
- Micromod Partikeltechnologie GmbH, Friedrich-Barnewitz-Straße 4, 18119 Rostock, Germany
| | | | - Heinz-Dieter Kurland
- Otto Schott Institute of Materials Research, Friedrich Schiller University Jena, Löbdergraben 32, 07743 Jena, Germany
| | - Robert Müller
- Leibniz Institute of Photonic Technology, Albert-Einstein-Straße 9, 07745 Jena, Germany
| | - Vera Dugandžić
- Leibniz Institute of Photonic Technology, Albert-Einstein-Straße 9, 07745 Jena, Germany
| | - Jana Thamm
- Pharmaceutical Technology & Biopharmacy, Friedrich Schiller University Jena, Lessingstraße 8, 07743 Jena, Germany
| | - Frank A. Müller
- Otto Schott Institute of Materials Research, Friedrich Schiller University Jena, Löbdergraben 32, 07743 Jena, Germany
| | - Jürgen Popp
- Leibniz Institute of Photonic Technology, Albert-Einstein-Straße 9, 07745 Jena, Germany
- Institute of Physical Chemistry, Friedrich Schiller University Jena, Helmholtzweg 4, 07743 Jena, Germany
| | - Dana Cialla-May
- Leibniz Institute of Photonic Technology, Albert-Einstein-Straße 9, 07745 Jena, Germany
- Institute of Physical Chemistry, Friedrich Schiller University Jena, Helmholtzweg 4, 07743 Jena, Germany
| | - Dagmar Fischer
- Pharmaceutical Technology & Biopharmacy, Friedrich Schiller University Jena, Lessingstraße 8, 07743 Jena, Germany
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Rovani S, Santos JJ, Corio P, Fungaro DA. Highly Pure Silica Nanoparticles with High Adsorption Capacity Obtained from Sugarcane Waste Ash. ACS OMEGA 2018; 3:2618-2627. [PMID: 30023841 PMCID: PMC6044884 DOI: 10.1021/acsomega.8b00092] [Citation(s) in RCA: 49] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/16/2018] [Accepted: 02/22/2018] [Indexed: 05/23/2023]
Abstract
Silica nanoparticles (SiO2NPs) from renewable sources can be used in very different materials, such as paints, membranes for fuel cells, Li-ion batteries, adsorbents, catalysts, and so on. Brazil is the world's largest producer of sugarcane and generates huge amounts of sugarcane waste ash (SWA), which is a Si-rich source. This study investigates a method to produce highly pure SiO2NPs from SWA. The SiO2NPs were characterized by inductively coupled plasma optical emission spectroscopy, scanning and transmission electron microscopy (TEM), X-ray diffraction analyses, specific surface area and pore distribution, UV and Fourier transform infrared spectroscopy, and thermogravimetric analyses and applied as an adsorbent material in the removal of acid orange 8 (AO8) dye from aqueous solution. The SiO2 content was 88.68 and 99.08 wt % for SWA and SiO2NPs, respectively. TEM images of SWA and SiO2NPs exhibit drastic alterations of the material size ranging from several micrometers to less than 20 nm. The SiO2NPs showed a specific surface area of 131 m2 g-1 and adsorption capacity of around 230 mg g-1 for acid orange 8 dye. Furthermore, the recycling of the SiO2NPs adsorbent after AO8 adsorption was very satisfactory, with reuse for up to five cycles being possible. The results indicate that it was possible to obtain highly pure silica in a nanosize from the waste material and produce an adsorbent with high adsorption capacity and the possibility of reuse.
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Affiliation(s)
- Suzimara Rovani
- Instituto
de Pesquisas Energéticas e Nucleares (IPEN-CNEN/SP), Av. Prof. Lineu Prestes, 2242, Cidade
Universitária, 05508-000 São Paulo, São Paulo, Brazil
| | - Jonnatan J. Santos
- Instituto
de Química, Universidade de São Paulo, Av. Prof. Lineu Prestes, 748, Cidade
Universitária, P.O. Box 26077, 05508-000 São Paulo, São Paulo, Brazil
| | - Paola Corio
- Instituto
de Química, Universidade de São Paulo, Av. Prof. Lineu Prestes, 748, Cidade
Universitária, P.O. Box 26077, 05508-000 São Paulo, São Paulo, Brazil
| | - Denise A. Fungaro
- Instituto
de Pesquisas Energéticas e Nucleares (IPEN-CNEN/SP), Av. Prof. Lineu Prestes, 2242, Cidade
Universitária, 05508-000 São Paulo, São Paulo, Brazil
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