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Niculescu AG, Mihaiescu B, Bîrcă AC, Moroșan A, Munteanu (Mihaiescu) OM, Vasile BȘ, Hadibarata T, Istrati D, Mihaiescu DE, Grumezescu AM. Fabrication and Advanced Imaging Characterization of Magnetic Aerogel-Based Thin Films for Water Decontamination. Gels 2024; 10:394. [PMID: 38920940 PMCID: PMC11202994 DOI: 10.3390/gels10060394] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2024] [Revised: 06/03/2024] [Accepted: 06/07/2024] [Indexed: 06/27/2024] Open
Abstract
Aerogels have emerged as appealing materials for various applications due to their unique features, such as low density, high porosity, high surface area, and low thermal conductivity. Aiming to bring the advantages of these materials to the environmental field, this study focuses on synthesizing magnetic silica aerogel-based films suitable for water decontamination. In this respect, a novel microfluidic platform was created to obtain core-shell iron oxide nanoparticles that were further incorporated into gel-forming precursor solutions. Afterward, dip-coating deposition was utilized to create thin layers of silica-based gels, which were further processed by 15-hour gelation time, solvent transfer, and further CO2 desiccation. A series of physicochemical analyses (XRD, HR-MS FT-ICR, FT-IR, TEM, SEM, and EDS) were performed to characterize the final films and intermediate products. The proposed advanced imaging experimental model for film homogeneity and adsorption characteristics confirmed uniform aerogel film deposition, nanostructured surface, and ability to remove pesticides from contaminated water samples. Based on thorough investigations, it was concluded that the fabricated magnetic aerogel-based thin films are promising candidates for water decontamination and novel solid-phase extraction sample preparation.
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Affiliation(s)
- Adelina-Gabriela Niculescu
- Department of Science and Engineering of Oxide Materials and Nanomaterials, National University of Science and Technology Politehnica Bucharest, 011061 Bucharest, Romania; (A.-G.N.); (B.M.); (A.C.B.); (O.M.M.); (B.Ș.V.); (T.H.); (A.M.G.)
- Research Institute of the University of Bucharest—ICUB, University of Bucharest, 050657 Bucharest, Romania
| | - Bogdan Mihaiescu
- Department of Science and Engineering of Oxide Materials and Nanomaterials, National University of Science and Technology Politehnica Bucharest, 011061 Bucharest, Romania; (A.-G.N.); (B.M.); (A.C.B.); (O.M.M.); (B.Ș.V.); (T.H.); (A.M.G.)
| | - Alexandra Cătălina Bîrcă
- Department of Science and Engineering of Oxide Materials and Nanomaterials, National University of Science and Technology Politehnica Bucharest, 011061 Bucharest, Romania; (A.-G.N.); (B.M.); (A.C.B.); (O.M.M.); (B.Ș.V.); (T.H.); (A.M.G.)
| | - Alina Moroșan
- Department of Organic Chemistry, National University of Science and Technology Politehnica Bucharest, 011061 Bucharest, Romania; (A.M.); (D.I.)
| | - Oana Maria Munteanu (Mihaiescu)
- Department of Science and Engineering of Oxide Materials and Nanomaterials, National University of Science and Technology Politehnica Bucharest, 011061 Bucharest, Romania; (A.-G.N.); (B.M.); (A.C.B.); (O.M.M.); (B.Ș.V.); (T.H.); (A.M.G.)
| | - Bogdan Ștefan Vasile
- Department of Science and Engineering of Oxide Materials and Nanomaterials, National University of Science and Technology Politehnica Bucharest, 011061 Bucharest, Romania; (A.-G.N.); (B.M.); (A.C.B.); (O.M.M.); (B.Ș.V.); (T.H.); (A.M.G.)
| | - Tony Hadibarata
- Department of Science and Engineering of Oxide Materials and Nanomaterials, National University of Science and Technology Politehnica Bucharest, 011061 Bucharest, Romania; (A.-G.N.); (B.M.); (A.C.B.); (O.M.M.); (B.Ș.V.); (T.H.); (A.M.G.)
- Department of Environmental Engineering, Faculty of Engineering and Science, Curtin University Malaysia, CDT 250, Miri 98009, Malaysia
| | - Daniela Istrati
- Department of Organic Chemistry, National University of Science and Technology Politehnica Bucharest, 011061 Bucharest, Romania; (A.M.); (D.I.)
| | - Dan Eduard Mihaiescu
- Department of Organic Chemistry, National University of Science and Technology Politehnica Bucharest, 011061 Bucharest, Romania; (A.M.); (D.I.)
| | - Alexandru Mihai Grumezescu
- Department of Science and Engineering of Oxide Materials and Nanomaterials, National University of Science and Technology Politehnica Bucharest, 011061 Bucharest, Romania; (A.-G.N.); (B.M.); (A.C.B.); (O.M.M.); (B.Ș.V.); (T.H.); (A.M.G.)
- Research Institute of the University of Bucharest—ICUB, University of Bucharest, 050657 Bucharest, Romania
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Niculescu AG, Munteanu (Mihaiescu) OM, Bîrcă AC, Moroșan A, Purcăreanu B, Vasile BȘ, Istrati D, Mihaiescu DE, Hadibarata T, Grumezescu AM. New 3D Vortex Microfluidic System Tested for Magnetic Core-Shell Fe 3O 4-SA Nanoparticle Synthesis. NANOMATERIALS (BASEL, SWITZERLAND) 2024; 14:902. [PMID: 38869527 PMCID: PMC11174075 DOI: 10.3390/nano14110902] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/28/2024] [Revised: 05/17/2024] [Accepted: 05/19/2024] [Indexed: 06/14/2024]
Abstract
This study's main objective was to fabricate an innovative three-dimensional microfluidic platform suitable for well-controlled chemical syntheses required for producing fine-tuned nanostructured materials. This work proposes using vortex mixing principles confined within a 3D multilayered microreactor to synthesize magnetic core-shell nanoparticles with tailored dimensions and polydispersity. The newly designed microfluidic platform allowed the simultaneous obtainment of Fe3O4 cores and their functionalization with a salicylic acid shell in a short reaction time and under a high flow rate. Synthesis optimization was also performed, employing the variation in the reagents ratio to highlight the concentration domains in which magnetite is mainly produced, the formation of nanoparticles with different diameters and low polydispersity, and the stability of colloidal dispersions in water. The obtained materials were further characterized by X-ray diffraction (XRD), Fourier-transform infrared (FT-IR) spectroscopy, dynamic light scattering (DLS), and transmission electron microscopy (TEM), with the experimental results confirming the production of salicylic acid-functionalized iron oxide (Fe3O4-SA) nanoparticles adapted for different further applications.
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Affiliation(s)
- Adelina-Gabriela Niculescu
- Department of Science and Engineering of Oxide Materials and Nanomaterials, National University of Science and Technology Politehnica Bucharest, 011061 Bucharest, Romania; (A.-G.N.); (O.M.M.); (A.C.B.); (B.P.); (B.Ș.V.); (T.H.); (A.M.G.)
- Research Institute of the University of Bucharest—ICUB, University of Bucharest, 050657 Bucharest, Romania
| | - Oana Maria Munteanu (Mihaiescu)
- Department of Science and Engineering of Oxide Materials and Nanomaterials, National University of Science and Technology Politehnica Bucharest, 011061 Bucharest, Romania; (A.-G.N.); (O.M.M.); (A.C.B.); (B.P.); (B.Ș.V.); (T.H.); (A.M.G.)
| | - Alexandra Cătălina Bîrcă
- Department of Science and Engineering of Oxide Materials and Nanomaterials, National University of Science and Technology Politehnica Bucharest, 011061 Bucharest, Romania; (A.-G.N.); (O.M.M.); (A.C.B.); (B.P.); (B.Ș.V.); (T.H.); (A.M.G.)
| | - Alina Moroșan
- Department of Organic Chemistry, National University of Science and Technology Politehnica Bucharest, 011061 Bucharest, Romania; (A.M.); (D.I.)
| | - Bogdan Purcăreanu
- Department of Science and Engineering of Oxide Materials and Nanomaterials, National University of Science and Technology Politehnica Bucharest, 011061 Bucharest, Romania; (A.-G.N.); (O.M.M.); (A.C.B.); (B.P.); (B.Ș.V.); (T.H.); (A.M.G.)
- BIOTEHNOS S.A., Gorunului Rue, No. 3-5, 075100 Otopeni, Romania
| | - Bogdan Ștefan Vasile
- Department of Science and Engineering of Oxide Materials and Nanomaterials, National University of Science and Technology Politehnica Bucharest, 011061 Bucharest, Romania; (A.-G.N.); (O.M.M.); (A.C.B.); (B.P.); (B.Ș.V.); (T.H.); (A.M.G.)
| | - Daniela Istrati
- Department of Organic Chemistry, National University of Science and Technology Politehnica Bucharest, 011061 Bucharest, Romania; (A.M.); (D.I.)
| | - Dan Eduard Mihaiescu
- Department of Organic Chemistry, National University of Science and Technology Politehnica Bucharest, 011061 Bucharest, Romania; (A.M.); (D.I.)
| | - Tony Hadibarata
- Department of Science and Engineering of Oxide Materials and Nanomaterials, National University of Science and Technology Politehnica Bucharest, 011061 Bucharest, Romania; (A.-G.N.); (O.M.M.); (A.C.B.); (B.P.); (B.Ș.V.); (T.H.); (A.M.G.)
- Department of Environmental Engineering, Faculty of Engineering and Science, Curtin University Malaysia, CDT 250, Miri 98009, Malaysia
| | - Alexandru Mihai Grumezescu
- Department of Science and Engineering of Oxide Materials and Nanomaterials, National University of Science and Technology Politehnica Bucharest, 011061 Bucharest, Romania; (A.-G.N.); (O.M.M.); (A.C.B.); (B.P.); (B.Ș.V.); (T.H.); (A.M.G.)
- Research Institute of the University of Bucharest—ICUB, University of Bucharest, 050657 Bucharest, Romania
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Ravariu C. Current Status of Field-Effect Transistors for Biosensing Applications. BIOSENSORS 2022; 12:1081. [PMID: 36551048 PMCID: PMC9775899 DOI: 10.3390/bios12121081] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/19/2022] [Accepted: 11/24/2022] [Indexed: 06/17/2023]
Abstract
The latest novelties in electronic biosensors indicate an increased interest in the compatibilization between Field Effect Transistors (FETs) and bioreceptors, either enzymes, antibodies or cells, for the purpose of detecting the multiple analytes [...].
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Affiliation(s)
- Cristian Ravariu
- BioNEC Group, Department of Electronic Devices Circuits and Architectures, Polytechnic University of Bucharest, Splaiul Independentei 313, 060042 Bucharest, Romania;
- EduSciArt SRL, SME of Education Science and Art, Iovita 2, 050686 Bucharest, Romania
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Al Fatease A, Haque M, Umar A, Ansari SG, Mahnashi MH, Alhamhoom Y, Ansari ZA. Fabrication and Characterization of Acute Myocardial Infarction Myoglobin Biomarker Based on Chromium-Doped Zinc Oxide Nanoparticles. BIOSENSORS 2022; 12:bios12080585. [PMID: 36004981 PMCID: PMC9406182 DOI: 10.3390/bios12080585] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/15/2022] [Revised: 06/30/2022] [Accepted: 07/09/2022] [Indexed: 01/07/2023]
Abstract
In this article, we describe the fabrication and characterization of a sensor for acute myocardial infarction that detects myoglobin biomarkers using chromium (Cr)-doped zinc oxide (ZnO) nanoparticles (NPs). Pure and Cr-doped ZnO NPs (13 × 1017, 20 × 1017, and 32 × 1017 atoms/cm3 in the solid phase) were synthesized by a facile low-temperature sol-gel method. Synthesized NPs were examined for structure and morphological analysis using various techniques to confirm the successful formation of ZnO NPs. Zeta potential was measured in LB media at a negative value and increased with doping. XPS spectra confirmed the presence of oxygen deficiency in the synthesized material. To fabricate the sensor, synthesized NPs were screen-printed over a pre-fabricated gold-coated working electrode for electrochemical detection of myoglobin (Mb). Cr-doped ZnO NPs doped with 13 × 1017 Cr atomic/cm3 revealed the highest sensitivity of ~37.97 μA.cm−2nM−1 and limit of detection (LOD) of 0.15 nM for Mb with a response time of ≤10 ms. The interference study was carried out with cytochrome c (Cyt-c) due to its resemblance with Mb and human serum albumin (HSA) abundance in the blood and displayed distinct oxidation potential and current values for Mb. Cr-doped ZnO NP-based Mb biosensors showed 3 times higher sensitivity as compared to pure ZnO NP-based sensors.
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Affiliation(s)
- Adel Al Fatease
- Department of Pharmaceutics, College of Pharmacy, King Khalid University, Guraiger, Abha 62529, Saudi Arabia; (A.A.F.); (Y.A.)
| | - Mazharul Haque
- Centre for Interdisciplinary Research in Basic Sciences, Jamia Millia Islamia, Jamia Nagar, New Delhi 110025, India; (M.H.); (S.G.A.); (Z.A.A.)
| | - Ahmad Umar
- Department of Chemistry, Faculty of Science and Arts and Promising Centre for Sensors and Electronic Devices (PCSED), Najran University, Najran 11001, Saudi Arabia
- Department of Materials Science and Engineering, The Ohio State University, Columbus, OH 43210, USA
- Correspondence:
| | - Shafeeque G. Ansari
- Centre for Interdisciplinary Research in Basic Sciences, Jamia Millia Islamia, Jamia Nagar, New Delhi 110025, India; (M.H.); (S.G.A.); (Z.A.A.)
| | - Mater H. Mahnashi
- Department of Pharmaceutical Chemistry, College of Pharmacy, Najran University, Najran 61441, Saudi Arabia;
| | - Yahya Alhamhoom
- Department of Pharmaceutics, College of Pharmacy, King Khalid University, Guraiger, Abha 62529, Saudi Arabia; (A.A.F.); (Y.A.)
| | - Zubaida A. Ansari
- Centre for Interdisciplinary Research in Basic Sciences, Jamia Millia Islamia, Jamia Nagar, New Delhi 110025, India; (M.H.); (S.G.A.); (Z.A.A.)
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Yunus Y, Mahadzir NA, Mohamed Ansari MN, Tg Abd Aziz TH, Mohd Afdzaluddin A, Anwar H, Wang M, Ismail AG. Review of the Common Deposition Methods of Thin-Film Pentacene, Its Derivatives, and Their Performance. Polymers (Basel) 2022; 14:polym14061112. [PMID: 35335442 PMCID: PMC8950127 DOI: 10.3390/polym14061112] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2021] [Revised: 11/09/2021] [Accepted: 11/09/2021] [Indexed: 02/02/2023] Open
Abstract
Pentacene is a well-known conjugated organic molecule with high mobility and a sensitive photo response. It is widely used in electronic devices, such as in organic thin-film transistors (OTFTs), organic light-emitting diodes (OLEDs), photodetectors, and smart sensors. With the development of flexible and wearable electronics, the deposition of good-quality pentacene films in large-scale organic electronics at the industrial level has drawn more research attention. Several methods are used to deposit pentacene thin films. The thermal evaporation technique is the most frequently used method for depositing thin films, as it has low contamination rates and a well-controlled deposition rate. Solution-processable methods such as spin coating, dip coating, and inkjet printing have also been widely studied because they enable large-scale deposition and low-cost fabrication of devices. This review summarizes the deposition principles and control parameters of each deposition method for pentacene and its derivatives. Each method is discussed in terms of experimentation and theory. Based on film quality and device performance, the review also provides a comparison of each method to provide recommendations for specific device applications.
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Affiliation(s)
- Yusniza Yunus
- Institute of Microengineering & Nanoelectronics, Universiti Kebangsaan Malaysia, Bangi 43600, Malaysia; (Y.Y.); (N.A.M.); (T.H.T.A.A.); (A.M.A.)
| | - Nurul Adlin Mahadzir
- Institute of Microengineering & Nanoelectronics, Universiti Kebangsaan Malaysia, Bangi 43600, Malaysia; (Y.Y.); (N.A.M.); (T.H.T.A.A.); (A.M.A.)
| | - Mohamed Nainar Mohamed Ansari
- Institute of Power Engineering, Universiti Tenaga Nasional, Bangi 43000, Malaysia
- Correspondence: (M.N.M.A.); (A.G.I.)
| | - Tg Hasnan Tg Abd Aziz
- Institute of Microengineering & Nanoelectronics, Universiti Kebangsaan Malaysia, Bangi 43600, Malaysia; (Y.Y.); (N.A.M.); (T.H.T.A.A.); (A.M.A.)
| | - Atiqah Mohd Afdzaluddin
- Institute of Microengineering & Nanoelectronics, Universiti Kebangsaan Malaysia, Bangi 43600, Malaysia; (Y.Y.); (N.A.M.); (T.H.T.A.A.); (A.M.A.)
| | - Hafeez Anwar
- Department of Physics, University of Agriculture, Faisalabad 38040, Pakistan;
| | - Mingqing Wang
- Institute for Materials Discovery, University College London, London WC1E 7JE, UK;
| | - Ahmad Ghadafi Ismail
- Institute of Microengineering & Nanoelectronics, Universiti Kebangsaan Malaysia, Bangi 43600, Malaysia; (Y.Y.); (N.A.M.); (T.H.T.A.A.); (A.M.A.)
- Correspondence: (M.N.M.A.); (A.G.I.)
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