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Bauer EM, Talone A, Imperatori P, Briancesco R, Bonadonna L, Carbone M. The Addition of Co into CuO-ZnO Oxides Triggers High Antibacterial Activity and Low Cytotoxicity. Nanomaterials (Basel) 2023; 13:2823. [PMID: 37947668 PMCID: PMC10649786 DOI: 10.3390/nano13212823] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/23/2023] [Revised: 10/19/2023] [Accepted: 10/19/2023] [Indexed: 11/12/2023]
Abstract
In the present work, a simple two-step method is proposed for mixed oxide synthesis aimed at the achievement of antibacterial nanomaterials. In particular, Cu, Zn and Co have been selected to achieve single-, double- and triple-cation oxides. The synthesized samples are characterized by XRD, IR, SEM and EDX, indicating the formation of either crystalline or amorphous hydrocarbonate precursors. The oxides present one or two crystalline phases, depending on their composition; the triple-cation oxides form a solid solution of tenorite. Also, the morphology of the samples varies with the composition, yielding nanoparticles, filaments and hydrangea-like microaggregates. The antibacterial assays are conducted against E. coli and indicate an enhanced efficacy, especially displayed by the oxide containing 3% Co and 9% Zn incorporated into the CuO lattice. The oxides with the highest antibacterial properties are tested for their cytotoxicity, indicating a low toxicity impact, in line with literature data.
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Affiliation(s)
- Elvira Maria Bauer
- Institute of Structure of Matter-Italian National Research Council (ISM-CNR), Via Salaria Km 29.3, 00015 Monterotondo, Italy; (E.M.B.); (P.I.)
| | - Alessandro Talone
- Department of Chemical Science and Technologies, University of Rome Tor Vergata, Via della Ricerca Scientifica, 00133 Rome, Italy;
| | - Patrizia Imperatori
- Institute of Structure of Matter-Italian National Research Council (ISM-CNR), Via Salaria Km 29.3, 00015 Monterotondo, Italy; (E.M.B.); (P.I.)
| | - Rossella Briancesco
- National Center for Water Safety, Italian National Health Institute, Viale Regina Elena 299, 00161 Rome, Italy; (R.B.); (L.B.)
| | - Lucia Bonadonna
- National Center for Water Safety, Italian National Health Institute, Viale Regina Elena 299, 00161 Rome, Italy; (R.B.); (L.B.)
| | - Marilena Carbone
- Department of Chemical Science and Technologies, University of Rome Tor Vergata, Via della Ricerca Scientifica, 00133 Rome, Italy;
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Gontrani L, Bauer EM, Talone A, Missori M, Imperatori P, Tagliatesta P, Carbone M. CuO Nanoparticles and Microaggregates: An Experimental and Computational Study of Structure and Electronic Properties. Materials (Basel) 2023; 16:4800. [PMID: 37445114 DOI: 10.3390/ma16134800] [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] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/30/2023] [Revised: 06/23/2023] [Accepted: 06/27/2023] [Indexed: 07/15/2023]
Abstract
The link between morphology and properties is well-established in the nanoparticle literature. In this report, we show that different approaches in the synthesis of copper oxide can lead to nanoparticles (NPs) of different size and morphology. The structure and properties of the synthesized NPs are investigated with powder X-ray diffraction, scanning electron microscopy (SEM), and diffuse reflectance spectroscopy (DRS). Through detailed SEM analyses, we were able to correlate the synthetic pathways with the particles' shape and aggregation, pointing out that bare hydrothermal pathways yield mainly spheroidal dandelion-like aggregates, whereas, if surfactants are added, the growth of the nanostructures along a preferential direction is promoted. The effect of the morphology on the electronic properties was evaluated through DRS, which allowed us to obtain the electron bandgap in every system synthesized, and to find that the rearrangement of threaded particles into more compact structures leads to a reduction in the energy difference. The latter result was compared with Density Functional Theory (DFT) computational models of small centrosymmetric CuO clusters, cut from the tenorite crystal structure. The computed UV-Vis absorption spectra obtained from the clusters are in good agreement with experimental findings.
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Affiliation(s)
- Lorenzo Gontrani
- Department of Chemical Science and Technologies, University of Rome "Tor Vergata", Via della Ricerca Scientifica 1, 00133 Rome, Italy
| | - Elvira Maria Bauer
- Italian National Research Council-Institute of Structure of Matter (CNR-ISM), Via Salaria km 29.3, 00015 Monterotondo, Italy
| | - Alessandro Talone
- Department of Chemical Science and Technologies, University of Rome "Tor Vergata", Via della Ricerca Scientifica 1, 00133 Rome, Italy
| | - Mauro Missori
- Institute of Complex Systems, National Research Council (CNR-ISC) and Department of Physics, Sapienza University of Rome, 00185 Rome, Italy
| | - Patrizia Imperatori
- Italian National Research Council-Institute of Structure of Matter (CNR-ISM), Via Salaria km 29.3, 00015 Monterotondo, Italy
| | - Pietro Tagliatesta
- Department of Chemical Science and Technologies, University of Rome "Tor Vergata", Via della Ricerca Scientifica 1, 00133 Rome, Italy
| | - Marilena Carbone
- Department of Chemical Science and Technologies, University of Rome "Tor Vergata", Via della Ricerca Scientifica 1, 00133 Rome, Italy
- Italian National Research Council-Institute of Structure of Matter (CNR-ISM), Via Salaria km 29.3, 00015 Monterotondo, Italy
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Talone A, Ruggiero L, Slimani S, Imperatori P, Barucca G, Ricci MA, Sodo A, Peddis D. Magnetic mesoporous silica nanostructures: investigation of magnetic properties. Nanotechnology 2020; 31:465707. [PMID: 32877370 DOI: 10.1088/1361-6528/abac7c] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Magnetic mesoporous silica (MS) nanocomposites provide the possibility of generating multi-functional objects for application in different technological areas. This paper focuses on the magnetic properties of nanocomposites constituted by spinel iron oxide nanoparticles (magnetic nanoparticles (MNPs), < D > ≈ 8-9 nm) embedded in an MS matrix. The mesoporous structure of the silica matrix and the presence of the nanoparticles inside clearly emerge from transmission electron microscopy (TEM) measurements. Low temperature (5 K) field-dependent magnetization measurements reveal saturation magnetization (MS ) close to bulk value (M S bulk ∼ 90 emu g-1) for both MNPs and MNP/MS nanocomposites, indicating that the presence of silica does not affect the magnetic features of the single MNPs. Moreover, the dependence of the remanent magnetization on field (i.e. δM plots) at low temperature has shown a small but evident decrease of interaction in an MNP/MS sample with respect to MNP samples A m2 Kg-1. Finally, a partial orientation of the easy axis is observed when the MNPs are embedded in the silica matrix.
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Affiliation(s)
- A Talone
- Istituto di Struttura della Materia, Consiglio Nazionale delle Ricerche, Monterotondo Scalo (RM), Italy. Dipartimento di Scienze, Università degli Studi 'Roma Tre', Roma, Italy
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Aslibeiki B, Kameli P, Salamati H, Concas G, Salvador Fernandez M, Talone A, Muscas G, Peddis D. Co-doped MnFe 2O 4 nanoparticles: magnetic anisotropy and interparticle interactions. Beilstein J Nanotechnol 2019; 10:856-865. [PMID: 31019873 PMCID: PMC6466680 DOI: 10.3762/bjnano.10.86] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/19/2018] [Accepted: 03/16/2019] [Indexed: 05/29/2023]
Abstract
The effect of cobalt doping on the magnetic properties of Mn1- x Co x Fe2O4 nanoparticles was investigated. All samples consist of ensembles of nanoparticles with a spherical shape and average diameter of about 10 nm, showing small structural changes due to the substitution. Besides having the same morpho-structural properties, the effect of the chemical composition, i.e., the amount of Co doping, produces marked differences on the magnetic properties, especially on the magnetic anisotropy, with evident large changes in the coercive field. Moreover, Co substitution has a profound effect on the interparticle interactions, too. A dipolar-based interaction regime is detected for all samples; in addition, the intensity of the interactions shows a possible relation with the single particle anisotropy. Finally, the sample with the strongest interaction regime shows a superspin glass state confirmed by memory effect dynamics.
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Affiliation(s)
- Bagher Aslibeiki
- Department of Physics, University of Tabriz, Tabriz 51666-16471, Iran
| | - Parviz Kameli
- Department of Physics, Isfahan University of Technology, Isfahan, 84156-83111, Iran
| | - Hadi Salamati
- Department of Physics, Isfahan University of Technology, Isfahan, 84156-83111, Iran
| | - Giorgio Concas
- Dipartimento di Fisica, Università di Cagliari, S.P. Monserrato-Sestu km 0,700, 09042 Monserrato (CA), Italy
| | - Maria Salvador Fernandez
- Dipartimento di Scienze, Università degli Studi Roma Tre, via della vasca navale, 84 - 00146 Roma, Italy
- Department of Physics, University of Oviedo, Campus de Viesques, 33204 Gijón, Spain
| | - Alessandro Talone
- Dipartimento di Scienze, Università degli Studi Roma Tre, via della vasca navale, 84 - 00146 Roma, Italy
- Istituto di Struttura della Materia-CNR, 00015 Monterotondo Scalo (RM), Italy
| | - Giuseppe Muscas
- Department of Physics and Astronomy, Uppsala University, Box 516, SE-751 20 Uppsala, Sweden
| | - Davide Peddis
- Istituto di Struttura della Materia-CNR, 00015 Monterotondo Scalo (RM), Italy
- Department of Chemistry and Industrial Chemistry (DCIC), University of Genova, Genova, Italy
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