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Cosma DV, Tudoran C, Coroș M, Socaci C, Urda A, Turza A, Roșu MC, Barbu-Tudoran L, Stanculescu I. Modification of Cotton and Leather Surfaces Using Cold Atmospheric Pressure Plasma and TiO 2-SiO 2-Reduced Graphene Oxide Nanopowders. Materials (Basel) 2023; 16:1397. [PMID: 36837027 PMCID: PMC9967795 DOI: 10.3390/ma16041397] [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] [Figures] [Subscribe] [Scholar Register] [Received: 12/14/2022] [Revised: 02/01/2023] [Accepted: 02/01/2023] [Indexed: 06/18/2023]
Abstract
Surface modification of textile fabrics and leathers is very versatile and allows the products quality improvement. In this work, cotton and leather substrates were pre-treated with cold atmospheric pressure plasma (CAPP) and further coated with TiO2-SiO2-reduced graphene oxide composites in dispersion form. By using a Taguchi scheme, this research evaluated the effect of three significant parameters, i.e., the pre-treatment with CAPP, organic dispersion coating and TiO2-SiO2-reduced graphene oxide (TS/GR) composites, that may affect the morpho-structural properties and photocatalytic activity of modified cotton and leather surfaces. The characteristics of cotton/leather surfaces were evaluated by morphological, structural, optical and self-cleaning ability using scanning electron microscopy with energy dispersive X-ray spectroscopy (SEM/EDX), X-ray powder diffraction (XRD), attenuated total reflection-Fourier Transform Infrared spectroscopy (ATR-FTIR) and UV-Vis spectroscopy. The self-cleaning performance of the obtained cotton and leather samples was evaluated by photocatalytic discoloration of berry juice surface stains under UV light irradiation for 12 h. The successfulness of coating formulations was proven by the SEM analysis and UV-Vis spectroscopy. The XRD patterns and ATR-FTIR spectra revealed the cellulose and collagen structures as dominant components of cotton and leather substrates. The CAPP treatment did not damage the cotton and leather structures. The photocatalytic results highlighted the potential of TiO2-SiO2-reduced graphene oxide composites in organic dispersion media, as coating formulations, for further use in the fabrication of innovative self-cleaning photocatalytic cotton and leather products.
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Affiliation(s)
- Dragoș-Viorel Cosma
- Department of Mass Spectrometry, Chromatography and Applied Physics, National Institute for Research and Development of Isotopic and Molecular Technologies (INCDTIM), 67-103 Donat Street, 400293 Cluj-Napoca, Romania
| | - Cristian Tudoran
- Cetatea, National Institute for Research and Development of Isotopic and Molecular Technologies (INCDTIM), 67-103 Donat Street, 400293 Cluj-Napoca, Romania
| | - Maria Coroș
- Department of Mass Spectrometry, Chromatography and Applied Physics, National Institute for Research and Development of Isotopic and Molecular Technologies (INCDTIM), 67-103 Donat Street, 400293 Cluj-Napoca, Romania
| | - Crina Socaci
- Department of Mass Spectrometry, Chromatography and Applied Physics, National Institute for Research and Development of Isotopic and Molecular Technologies (INCDTIM), 67-103 Donat Street, 400293 Cluj-Napoca, Romania
| | - Alexandra Urda
- Department of Mass Spectrometry, Chromatography and Applied Physics, National Institute for Research and Development of Isotopic and Molecular Technologies (INCDTIM), 67-103 Donat Street, 400293 Cluj-Napoca, Romania
| | - Alexandru Turza
- Department of Mass Spectrometry, Chromatography and Applied Physics, National Institute for Research and Development of Isotopic and Molecular Technologies (INCDTIM), 67-103 Donat Street, 400293 Cluj-Napoca, Romania
| | - Marcela-Corina Roșu
- Department of Mass Spectrometry, Chromatography and Applied Physics, National Institute for Research and Development of Isotopic and Molecular Technologies (INCDTIM), 67-103 Donat Street, 400293 Cluj-Napoca, Romania
| | - Lucian Barbu-Tudoran
- Electron Microscopy Center “Prof. C. Crăciun”, Faculty of Biology & Geology, “Babeș-Bolyai” University, 5-7 Clinicilor Street, 400006 Cluj-Napoca, Romania
- Electron Microscopy Integrated Laboratory, National Institute for Research and Development of Isotopic and Molecular Technologies, 67-103 Donat Street, 400293 Cluj-Napoca, Romania
| | - Ioana Stanculescu
- Analytical Chemistry and Physical Chemistry Department, Faculty of Chemistry, University of Bucharest, Regina Elisabeta, no. 4-12, 030018 Bucharest, Romania
- Horia Hulubei National Institute of Research and Development for Physics and Nuclear Engineering, 30 Reactorului Str., 077125 Magurele, Romania
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Cosma D, Urda A, Radu T, Rosu MC, Mihet M, Socaci C. Evaluation of the Photocatalytic Properties of Copper Oxides/Graphene/TiO2 Nanoparticles Composites. Molecules 2022; 27:molecules27185803. [PMID: 36144538 PMCID: PMC9502858 DOI: 10.3390/molecules27185803] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2022] [Revised: 08/24/2022] [Accepted: 09/02/2022] [Indexed: 11/16/2022] Open
Abstract
Easy and cost-efficient modifications of titanium dioxide nanoparticles that improve their efficiency in the visible light domain represent a continuous and challenging research topic. In addition, the effect of graphene on the overall photocatalytic process is still debated. Consequently, herein, we prepared a series of TiO2 nanoparticle-based composites with different copper oxide mass content (1–3%) and co-doped with graphene of different oxidation degrees. Different characterization techniques were used to analyze the structural and physico-chemical properties of the obtained composites: Scanning Electron Microscopy (SEM)/Transmission Electron Microscopy (TEM)/Energy-dispersive X-ray spectroscopy (EDX) analysis, X-ray powder diffraction (XRD), Fourier-transformed infrared spectroscopy (FT-IR) and X-ray photoelectron spectroscopy (XPS). The photocatalytic performance was evaluated by the degradation of methylene blue under both UVA and visible light irradiation. The nanocomposites show very good photocatalytic activity independent of the presence of reduced graphene oxide, due to the Cu2O/CuO-TiO2 heterojunctions. This finding has been confirmed by the very efficient visible-light-driven degradation of amoxicillin and ciprofloxacin.
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Affiliation(s)
- Dragos Cosma
- National Institute for Research and Development of Isotopic and Molecular Technologies—INCDTIM, 67-103 Donat Street, 400293 Cluj-Napoca, Romania
| | - Alexandra Urda
- National Institute for Research and Development of Isotopic and Molecular Technologies—INCDTIM, 67-103 Donat Street, 400293 Cluj-Napoca, Romania
- Faculty of Chemistry and Chemical Engineering, Babes-Bolyai University, 11 Arany Janos Street, 400028 Cluj-Napoca, Romania
| | - Teodora Radu
- National Institute for Research and Development of Isotopic and Molecular Technologies—INCDTIM, 67-103 Donat Street, 400293 Cluj-Napoca, Romania
| | - Marcela C. Rosu
- National Institute for Research and Development of Isotopic and Molecular Technologies—INCDTIM, 67-103 Donat Street, 400293 Cluj-Napoca, Romania
| | - Maria Mihet
- National Institute for Research and Development of Isotopic and Molecular Technologies—INCDTIM, 67-103 Donat Street, 400293 Cluj-Napoca, Romania
| | - Crina Socaci
- National Institute for Research and Development of Isotopic and Molecular Technologies—INCDTIM, 67-103 Donat Street, 400293 Cluj-Napoca, Romania
- Correspondence:
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Urda A, Radu T, Socaci C, Floare-Avram V, Cosma D, Rosu MC, Coros M, Pruneanu S, Pogacean F. Evaluation of N-doped graphene role in the visible-light driven photodegradation of sulfamethoxazole by a TiO2-silver-graphene composite. J Photochem Photobiol A Chem 2022. [DOI: 10.1016/j.jphotochem.2021.113701] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Suciu M, Porav S, Radu T, Rosu MC, Lazar MD, Macavei S, Socaci C. Photodynamic effect of light emitting diodes on E. coli and human skin cells induced by a graphene-based ternary composite. J Photochem Photobiol B 2021; 223:112298. [PMID: 34474299 DOI: 10.1016/j.jphotobiol.2021.112298] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/05/2020] [Revised: 08/17/2021] [Accepted: 08/18/2021] [Indexed: 01/10/2023]
Abstract
In this paper, the photodynamic effect of a ternary nanocomposite (TiO2-Ag/graphene) on Escherichia coli bacteria and two human cell lines: A375 (melanoma) and HaCaT (keratinocyte) after exposure to different wavelength domains (blue, green or red-Light Emitting Diode, LED) was analyzed. The results obtained through bioassays were correlated with the morphological, structural and spectral data obtained through FT-IR, XPS and UV-Vis spectroscopy, powder X-Ray diffractometry (XRD) and STEM/EDX techniques, leading to conclusions that showed different photodynamic activation mechanisms and effects on bacteria and human cells, depending on the wavelength. The nanocomposite proved a therapeutic potential for blue light-activated antibacterial treatment and revealed a keratinocyte cytotoxic effect under blue and green LEDs. The red light-nanocomposite duo gave a metabolic boost to normal keratinocytes and induced stasis to melanoma cells. The light and nanocomposite combination could be a potential therapy for bacterial keratosis or for skin tumors.
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Affiliation(s)
- Maria Suciu
- National Institute for Research and Development of Isotopic and Molecular Technologies, Donat 67-103 Str., RO-400293 Cluj-Napoca, Romania; Biology and Geology Faculty, Babes-Bolyai University, 5-7 Clinicilor Str, Cluj-Napoca, Romania
| | - Sebastian Porav
- National Institute for Research and Development of Isotopic and Molecular Technologies, Donat 67-103 Str., RO-400293 Cluj-Napoca, Romania
| | - Teodora Radu
- National Institute for Research and Development of Isotopic and Molecular Technologies, Donat 67-103 Str., RO-400293 Cluj-Napoca, Romania
| | - Marcela C Rosu
- National Institute for Research and Development of Isotopic and Molecular Technologies, Donat 67-103 Str., RO-400293 Cluj-Napoca, Romania
| | - Mihaela D Lazar
- National Institute for Research and Development of Isotopic and Molecular Technologies, Donat 67-103 Str., RO-400293 Cluj-Napoca, Romania
| | - Sergiu Macavei
- National Institute for Research and Development of Isotopic and Molecular Technologies, Donat 67-103 Str., RO-400293 Cluj-Napoca, Romania
| | - Crina Socaci
- National Institute for Research and Development of Isotopic and Molecular Technologies, Donat 67-103 Str., RO-400293 Cluj-Napoca, Romania.
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Coros M, Socaci C, Pruneanu S, Pogacean F, Rosu MC, Turza A, Magerusan L. Thermally reduced graphene oxide as green and easily available adsorbent for Sunset yellow decontamination. Environ Res 2020; 182:109047. [PMID: 31865167 DOI: 10.1016/j.envres.2019.109047] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/06/2019] [Revised: 12/13/2019] [Accepted: 12/13/2019] [Indexed: 06/10/2023]
Abstract
The release of synthetic food dyes, like Sunset yellow, into industrial effluents can cause serious environmental and health problems. Due to its aromatic structure, it is recalcitrant towards degradation into non-toxic intermediates and its removal by efficient adsorption represents a cheap and efficient method. Herein we propose the use of thermally reduced graphene oxide (TRGO) as effective Sunset yellow dye adsorbent with an adsorption maximum capacity comparable with other sophisticated, chemically synthesized carbon-based nanomaterials. The reduced graphene oxide and the Sunset yellow adsorbed one were characterized by FT-IR, XPS and XRD spectroscopy, N2 adsorption-desorption isotherm and TGA analysis. BET surface area reduced from 274.1 m2/g (for TRGO) to 39.9 m2/g (for TRGO-SY) showing that Sunset Yellow molecules occupied the corresponding active sites while the number of sheets resulted from the XRD spectra - from 3 to 8 in TRGO to 5 in TRGO-SY indicates the ordered intercalations in the graphene structure. The adsorption isotherm experimental data were better fitted with the Langmuir model than the Freundlich model, with the maximum adsorption capacity of the SY dye monolayer of 243.3 mg/g at pH = 6.0 and 189.0 mg/g from synthetic wastewater. The kinetic study revealed a perfect fit following the Pseudo-second order model with an equilibrium achieved within 30 min. The lack of adsorption on the starting graphene oxide is indicative for π-π interactions between the adsorbate and adsorbent.
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Affiliation(s)
- Maria Coros
- National Institute for Research and Development of Isotopic and Molecular Technologies, Donat 67-103, RO-400293, Cluj-Napoca, Romania
| | - Crina Socaci
- National Institute for Research and Development of Isotopic and Molecular Technologies, Donat 67-103, RO-400293, Cluj-Napoca, Romania.
| | - Stela Pruneanu
- National Institute for Research and Development of Isotopic and Molecular Technologies, Donat 67-103, RO-400293, Cluj-Napoca, Romania
| | - Florina Pogacean
- National Institute for Research and Development of Isotopic and Molecular Technologies, Donat 67-103, RO-400293, Cluj-Napoca, Romania
| | - Marcela-Corina Rosu
- National Institute for Research and Development of Isotopic and Molecular Technologies, Donat 67-103, RO-400293, Cluj-Napoca, Romania
| | - Alexandru Turza
- National Institute for Research and Development of Isotopic and Molecular Technologies, Donat 67-103, RO-400293, Cluj-Napoca, Romania
| | - Lidia Magerusan
- National Institute for Research and Development of Isotopic and Molecular Technologies, Donat 67-103, RO-400293, Cluj-Napoca, Romania
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Al-Ogaidi AJM, Stefan-van Staden RI, Gugoasa LA, Rosu MC, Socaci C. Electrochemical Determination of the KRAS Genetic Marker for Colon Cancer with Modified Graphete and Graphene Paste Electrodes. ANAL LETT 2018. [DOI: 10.1080/00032719.2018.1453516] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Ahmed Jassim Muklive Al-Ogaidi
- University Politehnica, Bucharest, Romania
- Applied Sciences Department, Branch of Applied Chemistry, University of Technology, Baghdad, Iraq
| | - Raluca-Ioana Stefan-van Staden
- University Politehnica, Bucharest, Romania
- Laboratory of Electrochemistry and PATLAB Bucharest, National Institute of Research for Electrochemistry and Condensed Matter, Bucharest, Romania
| | - Livia Alexandra Gugoasa
- Laboratory of Electrochemistry and PATLAB Bucharest, National Institute of Research for Electrochemistry and Condensed Matter, Bucharest, Romania
| | - Marcela-Corina Rosu
- National Institute for Research and Development of Isotopic and Molecular Technologies, Cluj-Napoca, Romania
| | - Crina Socaci
- National Institute for Research and Development of Isotopic and Molecular Technologies, Cluj-Napoca, Romania
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Magerusan L, Pogacean F, Coros M, Socaci C, Pruneanu S, Leostean C, Pana IO. Green methodology for the preparation of chitosan/graphene nanomaterial through electrochemical exfoliation and its applicability in Sunset Yellow detection. Electrochim Acta 2018. [DOI: 10.1016/j.electacta.2018.06.203] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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8
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Pogacean F, Coros M, Magerusan L, Rosu MC, Socaci C, Gergely S, van Staden RIS, Moldovan M, Sarosi C, Pruneanu S. Sensitive detection of hydroquinone using exfoliated graphene-Au/glassy carbon modified electrode. Nanotechnology 2018; 29:095501. [PMID: 29260725 DOI: 10.1088/1361-6528/aaa316] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Graphene nanosheets (EGr) were electrochemically prepared through one-step exfoliation of a graphite rod in a mixture of H2SO4:HNO3 (3:1) at low bias (4 V). Subsequently, gold nanoparticles were attached to the graphene surface (EGr-Au) by the reduction of the metal precursor (HAuCl4) in aqueous solution containing dispersed graphene sheets. According to the XRD investigation, the synthesized material consists of a mixture of few-layer (86%) and multi-layer (14%) graphene. The interlayer distance was found to be in the range of 0.466-0.342 nm, which is larger than the interlayer distance in graphite (0.335 nm). The average size of gold nanoparticles in the EGr-Au sample was 24 nm, in excellent agreement with the TEM results. The synthesized material was then employed to modify a glassy carbon (GC) substrate, in order to obtain a modified electrode (GC/EGr-Au). Next, the electrochemical behavior of hydroquinone (HQ) in the presence and absence of interfering species, catechol (CAT) and bisphenol A (BPA) was studied and the corresponding calibration curves were plotted. Thus, in solutions without interfering species, the GC/EGr-Au electrode has a wide linear range (3 × 10-7-10-4 M), high sensitivity (0.089 A M-1) and low detection limit (LOD = 10-7 M; S/N = 3). The presence of either catechol or bisphenol A leads to the increase of LOD to 2 × 10-7 M, and in addition changes the electrode sensitivity, up to 0.146 A M-1.
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Affiliation(s)
- Florina Pogacean
- National Institute for Research and Development of Isotopic and Molecular Technologies, 67-103 Donat Street, 400293 Cluj-Napoca, Romania
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Magerusan L, Socaci C, Coros M, Pogacean F, Rosu MC, Gergely S, Pruneanu S, Leostean C, Pana IO. Electrochemical platform based on nitrogen-doped graphene/chitosan nanocomposite for selective Pb 2+ detection. Nanotechnology 2017; 28:114001. [PMID: 28054508 DOI: 10.1088/1361-6528/aa56cb] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
A novel nanocomposite was developed and used for trace determination of Pb2+ cations from aqueous solutions. The nanocomposite was obtained by the association of N-doped graphene (N-Gr) with a biocompatible polymer, namely chitosan (Ch). The characterization of the new nanocomposite material (Ch-N-Gr) was performed using TEM, STEM-EDX, SEM, XRD and XPS techniques. Compared with the bare gold electrode (GE) a remarkable enhancement of the voltammetric response of the modified electrode (Ch-N-Gr/GE) was always observed. Using the Ch-N-Gr/GE, the Pb2+ voltammetric response showed a pair of well defined, quasi-reversible anodic and cathodic peaks, with the peak potentials located at about -0.59 V and -0.69 V, respectively. The calibration curves were obtained over a large linear range, from 10-7 to 10-4 M Pb2+ concentration. Under optimized conditions, the detection limit was found to be 6.64 × 10-8 M. The effect of several interfering species (such as other metallic cations or organic compounds of various concentrations) on the determination of Pb2+ concentration was also studied, and the results proved the selectivity of the proposed modified electrode. The validity and effectiveness of the method was further confirmed by trace determination of Pb2+ in real samples.
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Affiliation(s)
- Lidia Magerusan
- National Institute for Research and Development of Isotopic and Molecular Technologies, Donat Street, No. 67-103, RO-400293, Cluj-Napoca, Romania
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Roșu MC, Páll E, Socaci C, Măgeruşan L, Pogăcean F, Coroş M, Turza A, Pruneanu S. Cytotoxicity of methylcellulose-based films containing graphenes and curcumin on human lung fibroblasts. Process Biochem 2017. [DOI: 10.1016/j.procbio.2016.10.002] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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Pogacean F, Biris AR, Socaci C, Coros M, Magerusan L, Rosu MC, Lazar MD, Borodi G, Pruneanu S. Graphene-bimetallic nanoparticle composites with enhanced electro-catalytic detection of bisphenol A. Nanotechnology 2016; 27:484001. [PMID: 27804923 DOI: 10.1088/0957-4484/27/48/484001] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
This study brings for the first time novel knowledge about the synthesis by catalytic chemical vapor deposition with induction heating of graphene-bimetallic nanoparticle composites (Gr-AuCu and Gr-AgCu) and their morphological and structural characterization by transmission electron microscopy, Raman spectroscopy, and x-ray powder diffraction. Gold electrodes modified with the obtained materials exhibit an enhanced electro-catalytic effect towards one of the most encountered estrogenic disruptive chemicals, bisphenol A (BPA). The BPA behavior in varying pH solutions was investigated using the electrochemical quartz crystal microbalance, which allowed the accurate determination of the number of molecules involved in the oxidation process. The modified electrodes promote the oxidation of BPA at significantly lower potentials (0.66 V) compared to bare gold (0.78 V). In addition, the peak current density recorded with such electrodes greatly exceeded that obtained with bare gold (e.g. one order of magnitude larger, for a Au/Gr-AgCu electrode). The two modified electrodes have low detection limits, of 1.31 × 10-6 M and 1.91 × 10-6 M for Au/Gr-AgCu and Au/Gr-AuCu, respectively. The bare gold electrode has a higher detection limit of 5.1 × 10-6 M. The effect of interfering species (e.g. catechol and 3-nitrophenol) was also investigated. Their presence influenced not only the BPA peak potential, but also the peak current. With both modified electrodes, no peak currents were recorded below 3 × 10-5 M BPA.
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Affiliation(s)
- Florina Pogacean
- National Institute for Research and Development of Isotopic and Molecular Technologies, Donat Street, No. 67-103, RO-400293, Cluj-Napoca, Romania
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Magerusan L, Pogacean F, Socaci C, Coros M, Rosu MC, Pruneanu S. Charge transfer-resistance in nitrogen-doped/undoped graphene: Its influence on the electro-catalytic reduction of H 2 O 2. Electrochim Acta 2016. [DOI: 10.1016/j.electacta.2016.10.139] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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13
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Socaci C, Pogacean F, Biris A, Coros M, Rosu M, Magerusan L, Katona G, Pruneanu S. Graphene oxide vs. reduced graphene oxide as carbon support in porphyrin peroxidase biomimetic nanomaterials. Talanta 2016; 148:511-7. [DOI: 10.1016/j.talanta.2015.11.023] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2015] [Revised: 11/03/2015] [Accepted: 11/06/2015] [Indexed: 12/28/2022]
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14
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Craciun AM, Diac A, Focsan M, Socaci C, Magyari K, Maniu D, Mihalache I, Veca LM, Astilean S, Terec A. Surface passivation of carbon nanoparticles with p-phenylenediamine towards photoluminescent carbon dots. RSC Adv 2016. [DOI: 10.1039/c6ra10127e] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
New photoluminescent carbon dots with intriguing photoluminescent properties were prepared from carboxylated carbon nanoparticles via covalent bonding of p-phenylenediamine oligomers.
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15
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Coroş M, Pogăcean F, Roşu MC, Socaci C, Borodi G, Mageruşan L, Biriş AR, Pruneanu S. Simple and cost-effective synthesis of graphene by electrochemical exfoliation of graphite rods. RSC Adv 2016. [DOI: 10.1039/c5ra19277c] [Citation(s) in RCA: 91] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A simple and efficient approach for graphene production by electrochemical exfoliation of graphite rods in acidic solutions.
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Affiliation(s)
- Maria Coroş
- National Institute for Research and Development of Isotopic and Molecular Technologies
- 400293 Cluj-Napoca
- Romania
| | - Florina Pogăcean
- National Institute for Research and Development of Isotopic and Molecular Technologies
- 400293 Cluj-Napoca
- Romania
| | - Marcela-Corina Roşu
- National Institute for Research and Development of Isotopic and Molecular Technologies
- 400293 Cluj-Napoca
- Romania
| | - Crina Socaci
- National Institute for Research and Development of Isotopic and Molecular Technologies
- 400293 Cluj-Napoca
- Romania
| | - Gheorghe Borodi
- National Institute for Research and Development of Isotopic and Molecular Technologies
- 400293 Cluj-Napoca
- Romania
| | - Lidia Mageruşan
- National Institute for Research and Development of Isotopic and Molecular Technologies
- 400293 Cluj-Napoca
- Romania
| | - Alexandru R. Biriş
- National Institute for Research and Development of Isotopic and Molecular Technologies
- 400293 Cluj-Napoca
- Romania
| | - Stela Pruneanu
- National Institute for Research and Development of Isotopic and Molecular Technologies
- 400293 Cluj-Napoca
- Romania
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16
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Magerusan L, Socaci C, Pogacean F, Rosu MC, Biris AR, Coros M, Turza A, Floare-Avram V, Katona G, Pruneanu S. Enhancement of peroxidase-like activity of N-doped graphene assembled with iron-tetrapyridylporphyrin. RSC Adv 2016. [DOI: 10.1039/c6ra15414j] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Non-covalently iron-porphyrin functionalized N-doped graphene shows a higher peroxidase-like activity than its building blocks alone.
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Affiliation(s)
- L. Magerusan
- National Institute for Research and Development of Isotopic and Molecular Technologies
- 400293 Cluj-Napoca
- Romania
| | - C. Socaci
- National Institute for Research and Development of Isotopic and Molecular Technologies
- 400293 Cluj-Napoca
- Romania
| | - F. Pogacean
- National Institute for Research and Development of Isotopic and Molecular Technologies
- 400293 Cluj-Napoca
- Romania
| | - M.-C. Rosu
- National Institute for Research and Development of Isotopic and Molecular Technologies
- 400293 Cluj-Napoca
- Romania
| | - A. R. Biris
- National Institute for Research and Development of Isotopic and Molecular Technologies
- 400293 Cluj-Napoca
- Romania
| | - M. Coros
- National Institute for Research and Development of Isotopic and Molecular Technologies
- 400293 Cluj-Napoca
- Romania
| | - A. Turza
- National Institute for Research and Development of Isotopic and Molecular Technologies
- 400293 Cluj-Napoca
- Romania
| | - V. Floare-Avram
- National Institute for Research and Development of Isotopic and Molecular Technologies
- 400293 Cluj-Napoca
- Romania
| | - G. Katona
- Faculty of Chemistry and Chemical Engineering
- Babes-Bolyai University
- Cluj-Napoca
- Romania
| | - S. Pruneanu
- National Institute for Research and Development of Isotopic and Molecular Technologies
- 400293 Cluj-Napoca
- Romania
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17
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Olteanu D, Filip A, Socaci C, Biris AR, Filip X, Coros M, Rosu MC, Pogacean F, Alb C, Baldea I, Bolfa P, Pruneanu S. Cytotoxicity assessment of graphene-based nanomaterials on human dental follicle stem cells. Colloids Surf B Biointerfaces 2015; 136:791-8. [PMID: 26529387 DOI: 10.1016/j.colsurfb.2015.10.023] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2015] [Revised: 10/12/2015] [Accepted: 10/16/2015] [Indexed: 12/19/2022]
Abstract
Graphene-oxide (GO) and its most encountered derivatives, thermally reduced graphene oxide (TRGO) and nitrogen-doped graphene (N-Gr), were synthesized and structurally characterized by spectroscopic techniques, like Raman and (13)C MAS solid state NMR. Several biological effects (cytotoxicity, oxidative stress induction, and cellular and mithocondrial membrane alterations) induced by such graphene-based materials on human dental follicle stem cells were investigated. Graphene oxide shows the lowest cytotoxic effect, followed by the nitrogen-doped graphene, while thermally reduced graphene oxide exhibits high cytotoxic effects. Graphene oxide induces oxidative stress without causing cell membrane damage. Nitrogen-doped graphene shows a slight antioxidant activity; however, at high doses (20 and 40 μg/ml) it causes membrane damage. Both graphene oxide and nitrogen-doped graphene seem to be valuable candidates for usage in dental nanocomposites.
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Affiliation(s)
- Diana Olteanu
- Department of Physiology, Iuliu Hatieganu University of Medicine and Pharmacy, Clinicilor 1-3, Cluj-Napoca, Romania
| | - Adriana Filip
- Department of Physiology, Iuliu Hatieganu University of Medicine and Pharmacy, Clinicilor 1-3, Cluj-Napoca, Romania.
| | - Crina Socaci
- National Institute for Research and Development of Isotopic and Molecular Technologies, Donat Street No. 67-103, Cluj-Napoca 400293, Romania
| | - Alexandru Radu Biris
- National Institute for Research and Development of Isotopic and Molecular Technologies, Donat Street No. 67-103, Cluj-Napoca 400293, Romania
| | - Xenia Filip
- National Institute for Research and Development of Isotopic and Molecular Technologies, Donat Street No. 67-103, Cluj-Napoca 400293, Romania
| | - Maria Coros
- National Institute for Research and Development of Isotopic and Molecular Technologies, Donat Street No. 67-103, Cluj-Napoca 400293, Romania
| | - Marcela Corina Rosu
- National Institute for Research and Development of Isotopic and Molecular Technologies, Donat Street No. 67-103, Cluj-Napoca 400293, Romania
| | - Florina Pogacean
- National Institute for Research and Development of Isotopic and Molecular Technologies, Donat Street No. 67-103, Cluj-Napoca 400293, Romania
| | - Camelia Alb
- Department of Propedeutics and Dental Materials, Faculty of Dental Medicine, Iuliu Hatieganu University of Medicine and Pharmacy, Clinicilor 32, Cluj-Napoca, Romania
| | - Ioana Baldea
- Department of Physiology, Iuliu Hatieganu University of Medicine and Pharmacy, Clinicilor 1-3, Cluj-Napoca, Romania
| | - Pompei Bolfa
- University of Agricultural Sciences and Veterinary Medicine, Department of Pathology, Calea Manastur 3-5, 400372 Cluj-Napoca, Romania; Department of Biomedical Sciences, Ross University School of Veterinary Medicine Basseterre, St. Kitts, West Indies
| | - Stela Pruneanu
- National Institute for Research and Development of Isotopic and Molecular Technologies, Donat Street No. 67-103, Cluj-Napoca 400293, Romania.
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Affiliation(s)
- Ion Grosu
- Babeş-Bolyai University, Supramolecular Organic and Organometallic Chemistry Center (SOOMCC)
| | - Lidia Pop
- Babeş-Bolyai University, Supramolecular Organic and Organometallic Chemistry Center (SOOMCC)
| | - Mirabela Golban
- Babeş-Bolyai University, Supramolecular Organic and Organometallic Chemistry Center (SOOMCC)
| | - Niculina Hădade
- Babeş-Bolyai University, Supramolecular Organic and Organometallic Chemistry Center (SOOMCC)
| | - Crina Socaci
- Babeş-Bolyai University, Supramolecular Organic and Organometallic Chemistry Center (SOOMCC)
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19
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Pruneanu S, Biris AR, Pogacean F, Socaci C, Coros M, Rosu MC, Watanabe F, Biris AS. The influence of uric and ascorbic acid on the electrochemical detection of dopamine using graphene-modified electrodes. Electrochim Acta 2015. [DOI: 10.1016/j.electacta.2014.12.046] [Citation(s) in RCA: 70] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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Abstract
Stochastic sensors based on metal nanocomposites-graphene pastes modified with protoporphyrin-IX were used for the assay of PPAR-γ in cerebrospinal liquid.
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Affiliation(s)
- Raluca-Ioana Stefan-van Staden
- Laboratory of Electrochemistry and PATLAB
- National Institute of Research for Electrochemistry and Condensed Matter
- Romania
- Faculty of Applied Chemistry and Material Science
- Politehnica University of Bucharest
| | - Livia Alexandra Gugoasa
- Laboratory of Electrochemistry and PATLAB
- National Institute of Research for Electrochemistry and Condensed Matter
- Romania
- Faculty of Applied Chemistry and Material Science
- Politehnica University of Bucharest
| | - Crina Socaci
- National Institute for Research and Development of Isotopic and Molecular Technologies
- Cluj-Napoca
- Romania
| | - Alexandru Radu Biris
- National Institute for Research and Development of Isotopic and Molecular Technologies
- Cluj-Napoca
- Romania
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21
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Diac A, Focsan M, Socaci C, Gabudean AM, Farcau C, Maniu D, Vasile E, Terec A, Veca LM, Astilean S. Covalent conjugation of carbon dots with Rhodamine B and assessment of their photophysical properties. RSC Adv 2015. [DOI: 10.1039/c5ra13161h] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Applying the Förster formalism we studied the potential of urethane-like linkage at the surface of CDs to form donor–acceptor FRET pair in CD–Rhodamine conjugates.
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22
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Socaci C, Grosu I, Golban M, Paşcanu V, Hădade N, Pop L. Novel Nucleobase-Decorated Tripodands: Synthesis and Supramolecular Properties. SYNTHESIS-STUTTGART 2014. [DOI: 10.1055/s-0033-1340833] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Affiliation(s)
- Crina Socaci
- Babeş-Bolyai University, Supramolecular Organic and Organometallic Chemistry Center (SOOMCC)
| | - Ion Grosu
- Babeş-Bolyai University, Supramolecular Organic and Organometallic Chemistry Center (SOOMCC)
| | - Mirabela Golban
- Babeş-Bolyai University, Supramolecular Organic and Organometallic Chemistry Center (SOOMCC)
| | - Vlad Paşcanu
- Babeş-Bolyai University, Supramolecular Organic and Organometallic Chemistry Center (SOOMCC)
| | - Niculina Hădade
- Babeş-Bolyai University, Supramolecular Organic and Organometallic Chemistry Center (SOOMCC)
| | - Lidia Pop
- Babeş-Bolyai University, Supramolecular Organic and Organometallic Chemistry Center (SOOMCC)
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23
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Paşcanu V, Cîrcu M, Socaci C, Terec A, Soran A, Grosu I. Synthesis of cryptands with di-yne units via acetylenic homocoupling reactions of C3 tripodands. Tetrahedron Lett 2013. [DOI: 10.1016/j.tetlet.2013.09.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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24
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Pop F, Socaci C, Terec A, Condamine E, Varga RA, Raţ CI, Roncali J, Grosu I. Cryptands and bismacrocycles with cyanuric and isocyanuric units: synthesis and structural investigations. Tetrahedron 2012. [DOI: 10.1016/j.tet.2012.07.100] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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25
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Cîrcu M, Paşcanu V, Soran A, Braun B, Terec A, Socaci C, Grosu I. Solid state supramolecular assemblies of triol podands through H-bonds. CrystEngComm 2012. [DOI: 10.1039/c1ce05971h] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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26
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Socaci C, Grosu I, Ple G, Zwanziger HW, Mesaros E, Marginean D, Mager S. SYNTHESIS AND STEREOCHEMISTRY OF SOME NEW CHIRAL BROMINATED 1,3-DIOXANE DERIVATIVES. HETEROCYCL COMMUN 2000. [DOI: 10.1515/hc.2000.6.3.219] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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