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Gys N, An R, Pawlak B, Vogelsang D, Wyns K, Baert K, Vansant A, Blockhuys F, Adriaensens P, Hauffman T, Michielsen B, Mullens S, Meynen V. Amino-Alkylphosphonate-Grafted TiO 2: How the Alkyl Chain Length Impacts the Surface Properties and the Adsorption Efficiency for Pd. ACS OMEGA 2022; 7:45409-45421. [PMID: 36530305 PMCID: PMC9753204 DOI: 10.1021/acsomega.2c06020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/17/2022] [Accepted: 11/17/2022] [Indexed: 06/17/2023]
Abstract
Amino-alkylphosphonic acid-grafted TiO2 materials are of increasing interest in a variety of applications such as metal sorption, heterogeneous catalysis, CO2 capture, and enzyme immobilization. To date, systematic insights into the synthesis-properties-performance correlation are missing for such materials, albeit giving important know-how towards their applicability and limitations. In this work, the impact of the chain length and modification conditions (concentration and temperature) of amino-alkylphosphonic acid-grafted TiO2 on the surface properties and adsorption performance of palladium is studied. Via grafting with aminomethyl-, 3-aminopropyl-, and 6-aminohexylphosphonic acid, combined with the spectroscopic techniques (DRIFT, 31P NMR, XPS) and zeta potential measurements, differences in surface properties between the C1, C3, and C6 chains are revealed. The modification degree decreases with increasing chain length under the same synthesis conditions, indicative of folded grafted groups that sterically shield an increasing area of binding sites with increasing chain length. Next, all techniques confirm the different surface interactions of a C1 chain compared to a C3 or C6 chain. This is in line with palladium adsorption experiments, where only for a C1 chain, the adsorption efficiency is affected by the precursor concentration used for modification. The absence of a straightforward correlation between the number of free NH2 groups and the adsorption capacity for the different chain lengths indicates that other chain-length-specific surface interactions are controlling the adsorption performance. The increasing pH stability in the order of C1 < C3 < C6 can possibly be associated to a higher fraction of inaccessible hydrophilic sites due to the presence of folded structures. Lastly, the comparison of adsorption performance and pH stability with 3-aminopropyl(triethoxysilane)-grafted TiO2 reveals the applicability of both grafting methods depending on the envisaged pH during sorption.
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Affiliation(s)
- Nick Gys
- Sustainable
Materials, Flemish Institute for Technological
Research (VITO NV), Boeretang
200, 2400Mol, Belgium
- Laboratory
of Adsorption and Catalysis (LADCA), Department of Chemistry, University of Antwerp, Universiteitsplein 1, 2610Wilrijk, Belgium
| | - Rui An
- Laboratory
of Adsorption and Catalysis (LADCA), Department of Chemistry, University of Antwerp, Universiteitsplein 1, 2610Wilrijk, Belgium
| | - Bram Pawlak
- Analytical
and Circular Chemistry (ACC), Institute for Materials Research (IMO), Hasselt University, Agoralaan 1, 3590Diepenbeek, Belgium
| | - David Vogelsang
- Sustainable
Materials, Flemish Institute for Technological
Research (VITO NV), Boeretang
200, 2400Mol, Belgium
| | - Kenny Wyns
- Sustainable
Materials, Flemish Institute for Technological
Research (VITO NV), Boeretang
200, 2400Mol, Belgium
| | - Kitty Baert
- Research
Group Electrochemical and Surface Engineering (SURF), Department Materials
and Chemistry, Vrije Universiteit Brussel, Pleinlaan 2, 1050Brussels, Belgium
| | - Alexander Vansant
- Sustainable
Materials, Flemish Institute for Technological
Research (VITO NV), Boeretang
200, 2400Mol, Belgium
| | - Frank Blockhuys
- Structural
Chemistry Group, Department of Chemistry, University of Antwerp, Groenenborgerlaan 171, 2020Antwerp, Belgium
| | - Peter Adriaensens
- Analytical
and Circular Chemistry (ACC), Institute for Materials Research (IMO), Hasselt University, Agoralaan 1, 3590Diepenbeek, Belgium
| | - Tom Hauffman
- Research
Group Electrochemical and Surface Engineering (SURF), Department Materials
and Chemistry, Vrije Universiteit Brussel, Pleinlaan 2, 1050Brussels, Belgium
| | - Bart Michielsen
- Sustainable
Materials, Flemish Institute for Technological
Research (VITO NV), Boeretang
200, 2400Mol, Belgium
| | - Steven Mullens
- Sustainable
Materials, Flemish Institute for Technological
Research (VITO NV), Boeretang
200, 2400Mol, Belgium
| | - Vera Meynen
- Sustainable
Materials, Flemish Institute for Technological
Research (VITO NV), Boeretang
200, 2400Mol, Belgium
- Laboratory
of Adsorption and Catalysis (LADCA), Department of Chemistry, University of Antwerp, Universiteitsplein 1, 2610Wilrijk, Belgium
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Nguyen QT, Robert F, Colliere V, Lecante P, Philippot K, Esvan J, Tran PD, Amiens C. Synthesis of NiFeOx nanocatalysts from metal-organic precursors for the oxygen evolution reaction. Dalton Trans 2022; 51:11457-11466. [PMID: 35822914 DOI: 10.1039/d2dt01370c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Production of hydrogen from a renewable source that is water requires the development of sustainable catalytic processes. This implies, among others, developing efficient catalytic materials from abundant and low-cost resources and investigating their performance, especially in the oxidation of water as this half-reaction is the bottleneck of the water splitting process. For this purpose, NiFe-based nanoparticles with sizes ca. 3-4 nm have been synthesized by an organometallic approach and characterized by complementary techniques (WAXS, TEM, STEM-HAADF, EDX, XPS, and ATR-FTIR). They display a Ni core and a mixed Ni-Fe oxide shell. Once deposited onto FTO electrodes, they have been assessed in the electrocatalytic oxygen evolution reaction under alkaline conditions. Three different Ni/Fe ratios (2/1, 1/1 and 1/9) have been studied in comparison with their monometallic counterparts. The Ni2Fe1 nanocatalyst displayed the lowest overpotential (320 mV at j = 10 mA cm-2) as well as excellent stability over 16 h.
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Affiliation(s)
- Quyen T Nguyen
- CNRS, LCC (Laboratoire de Chimie de Coordination), 205 Route de Narbonne, BP 44099, F-31077 Toulouse Cedex 4, France. .,Université de Toulouse, UPS, INPT, F-31077 Toulouse Cedex 4, France.,University of Science and Technology of Hanoi, Vietnam Academy of Science and Technology of Hanoi, 18 Hoang Quoc Viet, Hanoi, Vietnam.
| | - Francois Robert
- CNRS, LCC (Laboratoire de Chimie de Coordination), 205 Route de Narbonne, BP 44099, F-31077 Toulouse Cedex 4, France. .,Université de Toulouse, UPS, INPT, F-31077 Toulouse Cedex 4, France
| | - Vincent Colliere
- CNRS, LCC (Laboratoire de Chimie de Coordination), 205 Route de Narbonne, BP 44099, F-31077 Toulouse Cedex 4, France. .,Université de Toulouse, UPS, INPT, F-31077 Toulouse Cedex 4, France
| | - Pierre Lecante
- CEMES-CNRS, Université de Toulouse, CNRS, UPS, 29 rue J. Marvig, 31055 Toulouse, France
| | - Karine Philippot
- CNRS, LCC (Laboratoire de Chimie de Coordination), 205 Route de Narbonne, BP 44099, F-31077 Toulouse Cedex 4, France. .,Université de Toulouse, UPS, INPT, F-31077 Toulouse Cedex 4, France
| | - Jérome Esvan
- CIRIMAT, Université de Toulouse, CNRS-INPT-UPS, 4 Allée Emile Monso, BP 44362, 31030 Toulouse, France
| | - Phong D Tran
- University of Science and Technology of Hanoi, Vietnam Academy of Science and Technology of Hanoi, 18 Hoang Quoc Viet, Hanoi, Vietnam.
| | - Catherine Amiens
- CNRS, LCC (Laboratoire de Chimie de Coordination), 205 Route de Narbonne, BP 44099, F-31077 Toulouse Cedex 4, France. .,Université de Toulouse, UPS, INPT, F-31077 Toulouse Cedex 4, France
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Nguyen QT, Rousset E, Nguyen VTH, Colliere V, Lecante P, Klysubun W, Philippot K, Esvan J, Respaud M, Lemercier G, Tran PD, Amiens C. Covalent Grafting of Ruthenium Complexes on Iron Oxide Nanoparticles: Hybrid Materials for Photocatalytic Water Oxidation. ACS APPLIED MATERIALS & INTERFACES 2021; 13:53829-53840. [PMID: 34726907 DOI: 10.1021/acsami.1c15051] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
The present environmental crisis prompts the search for renewable energy sources such as solar-driven production of hydrogen from water. Herein, we report an efficient hybrid photocatalyst for water oxidation, consisting of a ruthenium polypyridyl complex covalently grafted on core/shell Fe@FeOx nanoparticles via a phosphonic acid group. The photoelectrochemical measurements were performed under 1 sun illumination in 1 M KOH. The photocurrent density of this hybrid photoanode reached 20 μA/cm2 (applied potential of +1.0 V vs reversible hydrogen electrode), corresponding to a turnover frequency of 0.02 s-1. This performance represents a 9-fold enhancement of that achieved with a mixture of Fe@FeOx nanoparticles and a linker-free ruthenium polypyridyl photosensitizer. This increase in performance could be attributed to a more efficient electron transfer between the ruthenium photosensitizer and the Fe@FeOx catalyst as a consequence of the covalent link between these two species through the phosphonate pendant group.
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Affiliation(s)
- Quyen T Nguyen
- CNRS, LCC (Laboratoire de Chimie de Coordination), 205 Route de Narbonne, BP 44099, F-31077 Toulouse Cedex 4, France
- Université de Toulouse, UPS, INPT, F-31077 Toulouse Cedex 4, France
- University of Science and Technology of Hanoi, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, 100000 Hanoi, Vietnam
| | - Elodie Rousset
- University of Reims Champagne-Ardenne, ICMR, UMR CNRS, 7312 Moulin de la House, BP 1039, F-51687 Reims Cedex 2, France
| | - Van T H Nguyen
- University of Science and Technology of Hanoi, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, 100000 Hanoi, Vietnam
| | - Vincent Colliere
- CNRS, LCC (Laboratoire de Chimie de Coordination), 205 Route de Narbonne, BP 44099, F-31077 Toulouse Cedex 4, France
- Université de Toulouse, UPS, INPT, F-31077 Toulouse Cedex 4, France
| | - Pierre Lecante
- CEMES-CNRS, Université de Toulouse, 29 rue J. Marvig, F-31055 Toulouse, France
| | - Wantana Klysubun
- Synchrotron Light Research Institute, 111 University Avenue, Muang, 30000 Nakhon Ratchasima, Thailand
| | - Karine Philippot
- CNRS, LCC (Laboratoire de Chimie de Coordination), 205 Route de Narbonne, BP 44099, F-31077 Toulouse Cedex 4, France
- Université de Toulouse, UPS, INPT, F-31077 Toulouse Cedex 4, France
| | - Jérôme Esvan
- CIRIMAT, Université de Toulouse, CNRS-INPT-UPS, 4 Allée Emile Monso, BP 44362, 31030 Toulouse, France
| | - Marc Respaud
- Université de Toulouse, UPS, INPT, F-31077 Toulouse Cedex 4, France
- LPCNO, INSA, 135 Avenue de Rangueil, 31077 Toulouse Cedex 4, France
| | - Gilles Lemercier
- University of Reims Champagne-Ardenne, ICMR, UMR CNRS, 7312 Moulin de la House, BP 1039, F-51687 Reims Cedex 2, France
| | - Phong D Tran
- University of Science and Technology of Hanoi, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, 100000 Hanoi, Vietnam
| | - Catherine Amiens
- CNRS, LCC (Laboratoire de Chimie de Coordination), 205 Route de Narbonne, BP 44099, F-31077 Toulouse Cedex 4, France
- Université de Toulouse, UPS, INPT, F-31077 Toulouse Cedex 4, France
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Riboni N, Spadini C, Cabassi CS, Bianchi F, Grolli S, Conti V, Ramoni R, Casoli F, Nasi L, de Julián Fernández C, Luches P, Careri M. OBP-functionalized/hybrid superparamagnetic nanoparticles for Candida albicans treatment. RSC Adv 2021; 11:11256-11265. [PMID: 35423627 PMCID: PMC8695780 DOI: 10.1039/d1ra01112j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2021] [Accepted: 03/04/2021] [Indexed: 11/21/2022] Open
Abstract
Infections caused by the opportunistic yeast Candida albicans are one of the major life threats for hospitalized and immunocompromised patients, as a result of antibiotic and long-term antifungal treatment abuse. Odorant binding proteins can be considered interesting candidates to develop systems able to reduce the proliferation and virulence of this yeast, because of their intrinsic antimicrobial properties and complexation capabilities toward farnesol, the major quorum sensing molecule of Candida albicans. In the present study, a hybrid system characterized by a superparamagnetic iron oxide core functionalized with bovine odorant binding protein (bOBP) was successfully developed. The nanoparticles were designed to be suitable for magnetic protein delivery to inflamed areas of the body. The inorganic superparamagnetic core was characterized by an average diameter of 6.5 ± 1.1 nm and a spherical shape. Nanoparticles were functionalized by using 11-phosphonoundecanoic acid as spacer and linked to bOBP via amide bonds, resulting in a concentration level of 26.0 ± 1.2 mg bOBP/g SPIONs. Finally, both the biocompatibility of the developed hybrid system and the fungistatic activity against Candida albicans by submicromolar OBP levels were demonstrated by in vitro experiments.
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Affiliation(s)
- Nicolò Riboni
- University of Parma, Department of Chemistry, Life Sciences and Environmental Sustainability Parco Area delle Scienze 17/A 43124 Parma Italy +39 0521 905556 +39 0521 905128 +39 0521 905446
| | - Costanza Spadini
- University of Parma, Department of Veterinary Science Via del Taglio 10 43126 Parma Italy
| | - Clotilde S Cabassi
- University of Parma, Department of Veterinary Science Via del Taglio 10 43126 Parma Italy
| | - Federica Bianchi
- University of Parma, Department of Chemistry, Life Sciences and Environmental Sustainability Parco Area delle Scienze 17/A 43124 Parma Italy +39 0521 905556 +39 0521 905128 +39 0521 905446
- University of Parma, Interdepartmental Center for Packaging (CIPACK) Parco Area delle Scienze 43124 Parma Italy
| | - Stefano Grolli
- University of Parma, Department of Veterinary Science Via del Taglio 10 43126 Parma Italy
| | - Virna Conti
- University of Parma, Department of Veterinary Science Via del Taglio 10 43126 Parma Italy
| | - Roberto Ramoni
- University of Parma, Department of Veterinary Science Via del Taglio 10 43126 Parma Italy
| | - Francesca Casoli
- Institute of Materials for Electronics and Magnetism Parco Area delle Scienze 37/A 43124 Parma Italy
| | - Lucia Nasi
- Institute of Materials for Electronics and Magnetism Parco Area delle Scienze 37/A 43124 Parma Italy
| | - César de Julián Fernández
- Institute of Materials for Electronics and Magnetism Parco Area delle Scienze 37/A 43124 Parma Italy
| | - Paola Luches
- Center S3, Istituto Nanoscienze, CNR Via G. Campi 213/A 41125 Modena Italy
| | - Maria Careri
- University of Parma, Department of Chemistry, Life Sciences and Environmental Sustainability Parco Area delle Scienze 17/A 43124 Parma Italy +39 0521 905556 +39 0521 905128 +39 0521 905446
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5
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Lee S. Design Principle of Reactive Components for Dimethacrylate‐Terminated Quantum Dots: Preserved Photoluminescent Quantum Yield, Excellent Pattern Uniformity, and Suppression of Aggregation in the Matrix. MACROMOL CHEM PHYS 2020. [DOI: 10.1002/macp.201900488] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Seonwoo Lee
- Department of Electrical and Computer EngineeringInter‐university Semiconductor Research CenterSeoul National University 1 Gwanakro, Gwanak‐gu Seoul 08826 Republic of Korea
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6
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Mikšátko J, Aurélio D, Kovaříček P, Michlová M, Veverka M, Fridrichová M, Matulková I, Žáček M, Kalbáč M, Vejpravová J. Thermoreversible magnetic nanochains. NANOSCALE 2019; 11:16773-16780. [PMID: 31309957 DOI: 10.1039/c9nr03531a] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
The reversible organization of nanomagnets into highly anisotropic assemblies is of considerable interest for many applications, including theragnostic strategies in vivo. The current preparation strategies lead to structures that are not stable without the permanent presence of an applied magnetic field (MF); otherwise, irreversible assemblies are produced with moderate shape anisotropy at nanoscales. Here, we present a new approach based on the thermoreversible Diels-Alder reaction in the presence of an external MF that enables the assembly of single-domain nanomagnets into narrow chains with lengths of several micrometers. The MF-assisted click chemistry approach included (i) the synthesis of nanoparticles through a modified hydrothermal method, (ii) their functionalization via ligand exchange, (iii) the MF-assisted formation of chains, and (iv) the linkage of the nanomagnets in the presence of the magnetic field. Moreover, the chains can be again disassembled at elevated temperatures through a retro-Diels-Alder reaction. We thus demonstrated for the first time that MF-assisted click chemistry is a convenient method for large-scale preparation of highly anisotropic assemblies of nanosized magnets that can be reversibly decomposed by thermal treatment.
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Affiliation(s)
- Jiří Mikšátko
- Heyrovsky Institute of Physical Chemistry of the Czech Academy of Sciences, v.v.i., Dolejškova 2155/3, 182 23 Prague 8, Czech Republic.
| | - David Aurélio
- Department of Condensed Matter Physics, Faculty of Mathematics and Physics, Charles University, Ke Karlovu 5, 121 16 Prague 2, Czech Republic.
| | - Petr Kovaříček
- Heyrovsky Institute of Physical Chemistry of the Czech Academy of Sciences, v.v.i., Dolejškova 2155/3, 182 23 Prague 8, Czech Republic.
| | - Magdalena Michlová
- Heyrovsky Institute of Physical Chemistry of the Czech Academy of Sciences, v.v.i., Dolejškova 2155/3, 182 23 Prague 8, Czech Republic.
| | - Miroslav Veverka
- Department of Condensed Matter Physics, Faculty of Mathematics and Physics, Charles University, Ke Karlovu 5, 121 16 Prague 2, Czech Republic.
| | - Michaela Fridrichová
- Heyrovsky Institute of Physical Chemistry of the Czech Academy of Sciences, v.v.i., Dolejškova 2155/3, 182 23 Prague 8, Czech Republic.
| | - Irena Matulková
- Department of Inorganic Chemistry, Faculty of Science, Charles University, Hlavova 2030/8, 128 43 Prague 2, Czech Republic
| | - Martin Žáček
- Department of Condensed Matter Physics, Faculty of Mathematics and Physics, Charles University, Ke Karlovu 5, 121 16 Prague 2, Czech Republic.
| | - Martin Kalbáč
- Heyrovsky Institute of Physical Chemistry of the Czech Academy of Sciences, v.v.i., Dolejškova 2155/3, 182 23 Prague 8, Czech Republic.
| | - Jana Vejpravová
- Department of Condensed Matter Physics, Faculty of Mathematics and Physics, Charles University, Ke Karlovu 5, 121 16 Prague 2, Czech Republic.
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Iriarte-Mesa C, Díaz-Castañón S, Abradelo DG. Facile immobilization of Trametes versicolor laccase on highly monodisperse superparamagnetic iron oxide nanoparticles. Colloids Surf B Biointerfaces 2019; 181:470-479. [DOI: 10.1016/j.colsurfb.2019.05.012] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2019] [Revised: 04/20/2019] [Accepted: 05/07/2019] [Indexed: 01/03/2023]
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Koll R, Fruhner LS, Heller H, Allgaier J, Pyckhout-Hintzen W, Kruteva M, Feoktystov A, Biehl R, Förster S, Weller H. Creating a synthetic platform for the encapsulation of nanocrystals with covalently bound polymer shells. NANOSCALE 2019; 11:3847-3854. [PMID: 30758011 DOI: 10.1039/c8nr10018g] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
We present a platform for the encapsulation of superparamagnetic iron oxide nanocrystals (SPIONs) with a highly stable diblock copolymer shell allowing a homogeneous dispersion of the nanocrystals into a polymer matrix in the resulting nanocomposites. High polymer shell stability was achieved by crosslinking the inner polydiene shell for example in a persulfate based redox process. The advantage of this crosslinking reaction is the avoidance of heat and UV light for the initiation, making it suitable for heat or UV sensitive systems. In addition, we were able to minimize the ligand excess needed for the encapsulation and showcased a variation of molecular weight and composition as well as different ligands which lead to stable micelles. The encapsulated nanocrystals as well as the nanocomposite materials were characterized by transmission electron microscopy (TEM) and small angle scattering (SAXS and SANS).
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Affiliation(s)
- Rieke Koll
- Institute of Physical Chemistry, Fraunhofer CAN, Grindelallee 117, 20146 Hamburg, Germany.
| | - Lisa Sarah Fruhner
- Jülich Centre for Neutron Science (JCNS-1) and Institute for Complex Systems (ICS-1), Forschungszentrum Jülich GmbH, Leo-Brandt-Straße, 52425 Jülich, Germany. and Institute of Physical Chemistry, RWTH Aachen University, Landoltweg 2, 52056 Aachen, Germany
| | - Hauke Heller
- Institute of Physical Chemistry, Fraunhofer CAN, Grindelallee 117, 20146 Hamburg, Germany.
| | - Jürgen Allgaier
- Jülich Centre for Neutron Science (JCNS-1) and Institute for Complex Systems (ICS-1), Forschungszentrum Jülich GmbH, Leo-Brandt-Straße, 52425 Jülich, Germany.
| | - Wim Pyckhout-Hintzen
- Jülich Centre for Neutron Science (JCNS-1) and Institute for Complex Systems (ICS-1), Forschungszentrum Jülich GmbH, Leo-Brandt-Straße, 52425 Jülich, Germany.
| | - Margarita Kruteva
- Jülich Centre for Neutron Science (JCNS-1) and Institute for Complex Systems (ICS-1), Forschungszentrum Jülich GmbH, Leo-Brandt-Straße, 52425 Jülich, Germany.
| | - Artem Feoktystov
- Forschungszentrum Jülich GmbH, Jülich Centre for Neutron Science (JCNS) at MLZ, Lichtenbergstrasse 1, 85748 Garching, Germany
| | - Ralf Biehl
- Jülich Centre for Neutron Science (JCNS-1) and Institute for Complex Systems (ICS-1), Forschungszentrum Jülich GmbH, Leo-Brandt-Straße, 52425 Jülich, Germany.
| | - Stephan Förster
- Jülich Centre for Neutron Science (JCNS-1) and Institute for Complex Systems (ICS-1), Forschungszentrum Jülich GmbH, Leo-Brandt-Straße, 52425 Jülich, Germany. and Institute of Physical Chemistry, RWTH Aachen University, Landoltweg 2, 52056 Aachen, Germany
| | - Horst Weller
- Institute of Physical Chemistry, Fraunhofer CAN, Grindelallee 117, 20146 Hamburg, Germany.
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Microwave-assisted solid-state synthesis of Au nanoparticles, size-selective speciation, and their self-assembly into 2D-superlattice. ACTA ACUST UNITED AC 2019. [DOI: 10.1016/j.nanoso.2019.01.010] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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10
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KneŽević NŽ, Gadjanski I, Durand JO. Magnetic nanoarchitectures for cancer sensing, imaging and therapy. J Mater Chem B 2018; 7:9-23. [PMID: 32254946 DOI: 10.1039/c8tb02741b] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
The use of magnetic nanoparticles for sensing and theranostics of cancer has grown substantially in the last decade. Since the pioneering studies, which reported magnetic nanoparticles for bio-applications more than fifteen years ago, nanomaterials have increased in complexity with different shapes (nanoflowers, nanospheres, nanocubes, nanostars etc.) and compositions (e.g. core-shell) of nanoparticles for an increase in the sensitivity (imaging or sensing) and efficiency through synergistic treatments such as hyperthermia and drug delivery. In this review, we describe recent examples concerning the use of magnetic nanoparticles for bio-applications, from the surface functionalization methods to the development of cancer sensors and nanosystems for magnetic resonance and other imaging methodologies. Multifunctional nanosystems (nanocomposites, core shell nanomaterials) for theranostic applications involving treatments such as hyperthermia, photodynamic therapy, targeted drug delivery, and gene silencing are also described. These nanomaterials could be the future of medicine, although their complexity raises concerns about their safety.
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Affiliation(s)
- Nikola Ž KneŽević
- BioSense Institute, University of Novi Sad, Dr Zorana Djindjica 1, Novi Sad 21000, Serbia
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Mourdikoudis S, Pallares RM, Thanh NTK. Characterization techniques for nanoparticles: comparison and complementarity upon studying nanoparticle properties. NANOSCALE 2018; 10:12871-12934. [PMID: 29926865 DOI: 10.1039/c8nr02278j] [Citation(s) in RCA: 587] [Impact Index Per Article: 97.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
Nanostructures have attracted huge interest as a rapidly growing class of materials for many applications. Several techniques have been used to characterize the size, crystal structure, elemental composition and a variety of other physical properties of nanoparticles. In several cases, there are physical properties that can be evaluated by more than one technique. Different strengths and limitations of each technique complicate the choice of the most suitable method, while often a combinatorial characterization approach is needed. In addition, given that the significance of nanoparticles in basic research and applications is constantly increasing, it is necessary that researchers from separate fields overcome the challenges in the reproducible and reliable characterization of nanomaterials, after their synthesis and further process (e.g. annealing) stages. The principal objective of this review is to summarize the present knowledge on the use, advances, advantages and weaknesses of a large number of experimental techniques that are available for the characterization of nanoparticles. Different characterization techniques are classified according to the concept/group of the technique used, the information they can provide, or the materials that they are destined for. We describe the main characteristics of the techniques and their operation principles and we give various examples of their use, presenting them in a comparative mode, when possible, in relation to the property studied in each case.
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Affiliation(s)
- Stefanos Mourdikoudis
- Biophysics Group, Department of Physics and Astronomy, University College London, London, WC1E 6BT, UK.
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