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Aliakbarshirazi S, Ghobeira R, Asadian M, Narimisa M, Nikiforov A, De Baere I, Van Paepegem W, De Geyter N, Declercq H, Morent R. Advanced Hollow Cathode Discharge Plasma Treatment of Unique Bilayered Fibrous Nerve Guidance Conduits for Enhanced/Oriented Neurite Outgrowth. Biomacromolecules 2024; 25:1448-1467. [PMID: 38412382 DOI: 10.1021/acs.biomac.3c00976] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/29/2024]
Abstract
Despite all recent progresses in nerve tissue engineering, critical-sized nerve defects are still extremely challenging to repair. Therefore, this study targets the bridging of critical nerve defects and promoting an oriented neuronal outgrowth by engineering innovative nerve guidance conduits (NGCs) synergistically possessing exclusive topographical, chemical, and mechanical cues. To do so, a mechanically adequate mixture of polycaprolactone (PCL) and polylactic-co-glycolic acid (PLGA) was first carefully selected as base material to electrospin nanofibrous NGCs simulating the extracellular matrix. The electrospinning process was performed using a newly designed 2-pole air gap collector that leads to a one-step deposition of seamless NGCs having a bilayered architecture with an inner wall composed of highly aligned fibers and an outer wall consisting of randomly oriented fibers. This architecture is envisaged to afford guidance cues for the extension of long neurites on the underlying inner fiber alignment and to concurrently provide a sufficient nutrient supply through the pores of the outer random fibers. The surface chemistry of the NGCs was then modified making use of a hollow cathode discharge (HCD) plasma reactor purposely designed to allow an effective penetration of the reactive species into the NGCs to eventually treat their inner wall. X-ray photoelectron spectroscopy (XPS) results have indeed revealed a successful O2 plasma modification of the inner wall that exhibited a significantly increased oxygen content (24 → 28%), which led to an enhanced surface wettability. The treatment increased the surface nanoroughness of the fibers forming the NGCs as a result of an etching effect. This effect reduced the ultimate tensile strength of the NGCs while preserving their high flexibility. Finally, pheochromocytoma (PC12) cells were cultured on the NGCs to monitor their ability to extend neurites which is the base of a good nerve regeneration. In addition to remarkably improved cell adhesion and proliferation on the plasma-treated NGCs, an outstanding neural differentiation occurred. In fact, PC12 cells seeded on the treated samples extended numerous long neurites eventually establishing a neural network-like morphology with an overall neurite direction following the alignment of the underlying fibers. Overall, PCL/PLGA NGCs electrospun using the 2-pole air gap collector and O2 plasma-treated using an HCD reactor are promising candidates toward a full repair of critical nerve damage.
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Affiliation(s)
- Sheida Aliakbarshirazi
- Research Unit Plasma Technology (RUPT), Department of Applied Physics, Faculty of Engineering and Architecture, Ghent University, Sint-Pietersnieuwstraat 41 B4, 9000 Ghent, Belgium
| | - Rouba Ghobeira
- Research Unit Plasma Technology (RUPT), Department of Applied Physics, Faculty of Engineering and Architecture, Ghent University, Sint-Pietersnieuwstraat 41 B4, 9000 Ghent, Belgium
| | - Mahtab Asadian
- Research Unit Plasma Technology (RUPT), Department of Applied Physics, Faculty of Engineering and Architecture, Ghent University, Sint-Pietersnieuwstraat 41 B4, 9000 Ghent, Belgium
| | - Mehrnoush Narimisa
- Research Unit Plasma Technology (RUPT), Department of Applied Physics, Faculty of Engineering and Architecture, Ghent University, Sint-Pietersnieuwstraat 41 B4, 9000 Ghent, Belgium
| | - Anton Nikiforov
- Research Unit Plasma Technology (RUPT), Department of Applied Physics, Faculty of Engineering and Architecture, Ghent University, Sint-Pietersnieuwstraat 41 B4, 9000 Ghent, Belgium
| | - Ives De Baere
- Mechanics of Materials and Structures (MMS), Department of Materials, Textiles and Chemical Engineering, Faculty of Engineering and Architecture, Ghent University, Technologiepark-Zwijnaarde 903, 9052 Zwijnaarde, Belgium
| | - Wim Van Paepegem
- Mechanics of Materials and Structures (MMS), Department of Materials, Textiles and Chemical Engineering, Faculty of Engineering and Architecture, Ghent University, Technologiepark-Zwijnaarde 903, 9052 Zwijnaarde, Belgium
| | - Nathalie De Geyter
- Research Unit Plasma Technology (RUPT), Department of Applied Physics, Faculty of Engineering and Architecture, Ghent University, Sint-Pietersnieuwstraat 41 B4, 9000 Ghent, Belgium
| | - Heidi Declercq
- Tissue Engineering Lab, Department of Development and Regeneration, Faculty of Medicine, KU Leuven Campus Kulak, Etienne Sabbelaan 53, 8500 Kortrijk, Belgium
| | - Rino Morent
- Research Unit Plasma Technology (RUPT), Department of Applied Physics, Faculty of Engineering and Architecture, Ghent University, Sint-Pietersnieuwstraat 41 B4, 9000 Ghent, Belgium
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Asadian M, Tomasina C, Onyshchenko Y, Chan KV, Norouzi M, Zonderland J, Camarero-Espinosa S, Morent R, De Geyter N, Moroni L. The role of plasma-induced surface chemistry on polycaprolactone nanofibers to direct chondrogenic differentiation of human mesenchymal stem cells. J Biomed Mater Res A 2024; 112:210-230. [PMID: 37706337 DOI: 10.1002/jbm.a.37607] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2023] [Revised: 08/12/2023] [Accepted: 08/24/2023] [Indexed: 09/15/2023]
Abstract
Bone marrow-derived mesenchymal stromal cells (BMSCs) are extensively being utilized for cartilage regeneration owing to their excellent differentiation potential and availability. However, controlled differentiation of BMSCs towards cartilaginous phenotypes to heal full-thickness cartilage defects remains challenging. This study investigates how different surface properties induced by either coating deposition or biomolecules immobilization onto nanofibers (NFs) could affect BMSCs chondro-inductive behavior. Accordingly, electrospun poly(ε-caprolactone) (PCL) NFs were exposed to two surface modification strategies based on medium-pressure plasma technology. The first strategy is plasma polymerization, in which cyclopropylamine (CPA) or acrylic acid (AcAc) monomers were plasma polymerized to obtain amine- or carboxylic acid-rich NFs, respectively. The second strategy uses a combination of CPA plasma polymerization and a post-chemical technique to immobilize chondroitin sulfate (CS) onto the NFs. These modifications could affect surface roughness, hydrophilicity, and chemical composition while preserving the NFs' nano-morphology. The results of long-term BMSCs culture in both basic and chondrogenic media proved that the surface modifications modulated BMSCs chondrogenic differentiation. Indeed, the incorporation of polar groups by different modification strategies had a positive impact on the cell proliferation rate, production of the glycosaminoglycan matrix, and expression of extracellular matrix proteins (collagen I and collagen II). The chondro-inductive behavior of the samples was highly dependent on the nature of the introduced polar functional groups. Among all samples, carboxylic acid-rich NFs promoted chondrogenesis by higher expression of aggrecan, Sox9, and collagen II with downregulation of hypertrophic markers. Hence, this approach showed an intrinsic potential to have a non-hypertrophic chondrogenic cell phenotype.
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Affiliation(s)
- Mahtab Asadian
- Research Unit Plasma Technology (RUPT), Department of Applied Physics, Ghent University, Ghent, Belgium
- Prometheus Division of Skeletal Tissue Engineering, Department of Materials Science, KU Leuven University, Leuven, Belgium
| | - Clarissa Tomasina
- MERLN Institute for Technology-Inspired Regenerative Medicine, Complex Tissue Regeneration Department, Maastricht University, Maastricht, The Netherlands
| | - Yuliia Onyshchenko
- Research Unit Plasma Technology (RUPT), Department of Applied Physics, Ghent University, Ghent, Belgium
| | - Ke Vin Chan
- Research Unit Plasma Technology (RUPT), Department of Applied Physics, Ghent University, Ghent, Belgium
| | - Mohammad Norouzi
- Department of Pharmacology, University of Montreal, Montreal, Québec, Canada
| | - Jip Zonderland
- MERLN Institute for Technology-Inspired Regenerative Medicine, Complex Tissue Regeneration Department, Maastricht University, Maastricht, The Netherlands
| | - Sandra Camarero-Espinosa
- MERLN Institute for Technology-Inspired Regenerative Medicine, Complex Tissue Regeneration Department, Maastricht University, Maastricht, The Netherlands
- POLYMAT University of the Basque Country UPV/EHU Avenida Tolosa 72, Donostia/San Sebastián, Spain
- IKERBASQUE, Basque Foundation for Science, Euskadi Pl. 5, Bilbao, Spain
| | - Rino Morent
- Research Unit Plasma Technology (RUPT), Department of Applied Physics, Ghent University, Ghent, Belgium
| | - Nathalie De Geyter
- Research Unit Plasma Technology (RUPT), Department of Applied Physics, Ghent University, Ghent, Belgium
| | - Lorenzo Moroni
- MERLN Institute for Technology-Inspired Regenerative Medicine, Complex Tissue Regeneration Department, Maastricht University, Maastricht, The Netherlands
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Khan R, Chakraborty J, Singh Rawat K, Morent R, De Geyter N, Van Speybroeck V, Van Der Voort P. Super-Oxidizing Covalent Triazine Framework Electrocatalyst for Two-Electron Water Oxidation to H 2 O 2. Angew Chem Int Ed Engl 2023; 62:e202313836. [PMID: 37806967 DOI: 10.1002/anie.202313836] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2023] [Revised: 10/06/2023] [Accepted: 10/07/2023] [Indexed: 10/10/2023]
Abstract
Electrochemical two-electron water oxidation (2e WOR) is gaining surging research traction for sustainable hydrogen peroxide production. However, the strong oxidizing environment and thermodynamically competitive side-reaction (4e WOR) posit as thresholds for the 2e WOR. We herein report a custom-crafted covalent triazine network possessing strong oxidizing properties as a proof-of-concept metal-free functional organic network electrocatalyst for catalyzing 2e WOR. As the first-of-its-kind, the material shows a maximum of 89.9 % Faradaic Efficiency and 1428 μmol/h/cm2 H2 O2 production rate at 3.0 V bias potential (vs reversible hydrogen electrode, RHE), which are either better or comparable to the state-of-the-art electrocatalysts. We have experimentally confirmed a stepwise 2e WOR mechanism which was further computationally endorsed by density functional theory studies.
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Affiliation(s)
- Ruqia Khan
- Center for Ordered Materials, Organometallics and Catalysis (COMOC), Department of Chemistry, Ghent University, Krijgslaan 281-S3, 9000, Ghent, Belgium
- Department of Chemistry, Quaid-i-Azam University, Islamabad, 45320, Pakistan
| | - Jeet Chakraborty
- Center for Ordered Materials, Organometallics and Catalysis (COMOC), Department of Chemistry, Ghent University, Krijgslaan 281-S3, 9000, Ghent, Belgium
| | - Kuber Singh Rawat
- Center for Molecular Modeling (CMM), Ghent University, Technologiepark-Zwijnaarde 46, 9052, Zwijnaarde, Belgium
| | - Rino Morent
- Research Unit Plasma Technology (RUPT), Department of Applied Physics, Ghent University, Sint-Pietersnieuwstraat 41 B4, 9000, Ghent, Belgium
| | - Nathalie De Geyter
- Research Unit Plasma Technology (RUPT), Department of Applied Physics, Ghent University, Sint-Pietersnieuwstraat 41 B4, 9000, Ghent, Belgium
| | - Veronique Van Speybroeck
- Center for Molecular Modeling (CMM), Ghent University, Technologiepark-Zwijnaarde 46, 9052, Zwijnaarde, Belgium
| | - Pascal Van Der Voort
- Center for Ordered Materials, Organometallics and Catalysis (COMOC), Department of Chemistry, Ghent University, Krijgslaan 281-S3, 9000, Ghent, Belgium
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Deboos V, Calabrese C, Giraudon JM, Morent R, De Geyter N, Liotta LF, Lamonier JF. Copper-Based Silica Nanotubes as Novel Catalysts for the Total Oxidation of Toluene. Nanomaterials (Basel) 2023; 13:2202. [PMID: 37570520 PMCID: PMC10420819 DOI: 10.3390/nano13152202] [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] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/07/2023] [Revised: 07/21/2023] [Accepted: 07/26/2023] [Indexed: 08/13/2023]
Abstract
Cu (10 wt%) materials on silica nanotubes were prepared via two different synthetic approaches, co-synthesis and wetness impregnation on preformed SiO2 nanotubes, both as dried or calcined materials, with Cu(NO3)2.5H2O as a material precursor. The obtained silica and the Cu samples, after calcination at 550 °C for 5 h, were characterized by several techniques, such as TEM, N2 physisorption, XRD, Raman, H2-TPR and XPS, and tested for toluene oxidation in the 20-450 °C temperature range. A reference sample, Cu(10 wt%) over commercial silica, was also prepared. The copper-based silica nanotubes exhibited the best performances with respect to toluene oxidation. The Cu-based catalyst using dried silica nanotubes has the lowest T50 (306 °C), the temperature required for 50% toluene conversion, compared with a T50 of 345 °C obtained for the reference catalyst. The excellent catalytic properties of this catalyst were ascribed to the presence of easy copper (II) species finely dispersed (crystallite size of 13 nm) on the surface of silica nanotubes. The present data underlined the impact of the synthetic method on the catalyst properties and oxidation activity.
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Affiliation(s)
- Victor Deboos
- Unité de Catalyse et Chimie du Solide (UCCS), Université de Lille, CNRS, Centrale Lille, Université Artois, UMR 8181, 59000 Lille, France; (V.D.); (J.-M.G.)
- Research Unit Plasma Technology (RUPT), Department of Applied Physics, Faculty of Engineering and Architecture, Ghent University, 9000 Ghent, Belgium; (R.M.); (N.D.G.)
| | - Carla Calabrese
- Institute for the Study of Nanostructured Materials (ISMN)-CNR, Via Ugo La Malfa, 153, 90146 Palermo, Italy;
| | - Jean-Marc Giraudon
- Unité de Catalyse et Chimie du Solide (UCCS), Université de Lille, CNRS, Centrale Lille, Université Artois, UMR 8181, 59000 Lille, France; (V.D.); (J.-M.G.)
| | - Rino Morent
- Research Unit Plasma Technology (RUPT), Department of Applied Physics, Faculty of Engineering and Architecture, Ghent University, 9000 Ghent, Belgium; (R.M.); (N.D.G.)
| | - Nathalie De Geyter
- Research Unit Plasma Technology (RUPT), Department of Applied Physics, Faculty of Engineering and Architecture, Ghent University, 9000 Ghent, Belgium; (R.M.); (N.D.G.)
| | - Leonarda Francesca Liotta
- Institute for the Study of Nanostructured Materials (ISMN)-CNR, Via Ugo La Malfa, 153, 90146 Palermo, Italy;
| | - Jean-François Lamonier
- Unité de Catalyse et Chimie du Solide (UCCS), Université de Lille, CNRS, Centrale Lille, Université Artois, UMR 8181, 59000 Lille, France; (V.D.); (J.-M.G.)
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Debruyne M, Borgmans S, Radhakrishnan S, Breynaert E, Vrielinck H, Leus K, Laemont A, De Vos J, Rawat KS, Vanlommel S, Rijckaert H, Salemi H, Everaert J, Vanden Bussche F, Poelman D, Morent R, De Geyter N, Van Der Voort P, Van Speybroeck V, Stevens CV. Engineering of Phenylpyridine- and Bipyridine-Based Covalent Organic Frameworks for Photocatalytic Tandem Aerobic Oxidation/Povarov Cyclization. ACS Appl Mater Interfaces 2023; 15:35092-35106. [PMID: 37462114 DOI: 10.1021/acsami.3c07036] [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] [Subscribe] [Scholar Register] [Indexed: 07/28/2023]
Abstract
Covalent organic frameworks (COFs) are emerging as a new class of photoactive organic semiconductors, which possess crystalline ordered structures and high surface areas. COFs can be tailor-made toward specific (photocatalytic) applications, and the size and position of their band gaps can be tuned by the choice of building blocks and linkages. However, many types of building blocks are still unexplored as photocatalytic moieties and the scope of reactions photocatalyzed by COFs remains quite limited. In this work, we report the synthesis and application of two bipyridine- or phenylpyridine-based COFs: TpBpyCOF and TpPpyCOF. Due to their good photocatalytic properties, both materials were applied as metal-free photocatalysts for the tandem aerobic oxidation/Povarov cyclization and α-oxidation of N-aryl glycine derivatives, with the bipyridine-based TpBpyCOF exhibiting the highest activity. By expanding the range of reactions that can be photocatalyzed by COFs, this work paves the way toward the more widespread application of COFs as metal-free heterogeneous photocatalysts as a convenient alternative for commonly used homogeneous (metal-based) photocatalysts.
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Affiliation(s)
- Maarten Debruyne
- Department of Green Chemistry and Technology, Ghent University, Coupure Links 653, Ghent 9000, Belgium
| | - Sander Borgmans
- Department of Applied Physics, Ghent University, Technologiepark 46, Zwijnaarde 9052, Belgium
| | - Sambhu Radhakrishnan
- NMR/X-ray Platform for Convergence Research (NMRCoRe) & Centre for Surface Chemistry and Catalysis: Characterisation and Application Team (COK-KAT), KU Leuven, Celestijnenlaan 200f─Box 2461, Leuven 3001, Belgium
| | - Eric Breynaert
- NMR/X-ray Platform for Convergence Research (NMRCoRe) & Centre for Surface Chemistry and Catalysis: Characterisation and Application Team (COK-KAT), KU Leuven, Celestijnenlaan 200f─Box 2461, Leuven 3001, Belgium
| | - Henk Vrielinck
- Department of Solid State Sciences, Ghent University, Krijgslaan 281 (S1), Ghent 9000, Belgium
| | - Karen Leus
- Department of Applied Physics, Faculty of Engineering and Architecture, Ghent University, Sint-Pietersnieuwstraat 41 (B4), Ghent 9000, Belgium
| | - Andreas Laemont
- Department of Chemistry, Ghent University, Krijgslaan 281 (S3), Ghent 9000, Belgium
| | - Juul De Vos
- Department of Applied Physics, Ghent University, Technologiepark 46, Zwijnaarde 9052, Belgium
| | - Kuber Singh Rawat
- Department of Applied Physics, Ghent University, Technologiepark 46, Zwijnaarde 9052, Belgium
| | - Siebe Vanlommel
- Department of Applied Physics, Ghent University, Technologiepark 46, Zwijnaarde 9052, Belgium
| | - Hannes Rijckaert
- Department of Chemistry, Ghent University, Krijgslaan 281 (S3), Ghent 9000, Belgium
| | - Hadi Salemi
- Department of Green Chemistry and Technology, Ghent University, Coupure Links 653, Ghent 9000, Belgium
| | - Jonas Everaert
- Department of Green Chemistry and Technology, Ghent University, Coupure Links 653, Ghent 9000, Belgium
| | - Flore Vanden Bussche
- Department of Green Chemistry and Technology, Ghent University, Coupure Links 653, Ghent 9000, Belgium
- Department of Chemistry, Ghent University, Krijgslaan 281 (S3), Ghent 9000, Belgium
| | - Dirk Poelman
- Department of Solid State Sciences, Ghent University, Krijgslaan 281 (S1), Ghent 9000, Belgium
| | - Rino Morent
- Department of Applied Physics, Faculty of Engineering and Architecture, Ghent University, Sint-Pietersnieuwstraat 41 (B4), Ghent 9000, Belgium
| | - Nathalie De Geyter
- Department of Applied Physics, Faculty of Engineering and Architecture, Ghent University, Sint-Pietersnieuwstraat 41 (B4), Ghent 9000, Belgium
| | - Pascal Van Der Voort
- Department of Chemistry, Ghent University, Krijgslaan 281 (S3), Ghent 9000, Belgium
| | | | - Christian V Stevens
- Department of Green Chemistry and Technology, Ghent University, Coupure Links 653, Ghent 9000, Belgium
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Ghobeira R, Esbah Tabaei PS, Nikiforov A, Morent R, De Geyter N. Unraveling Exclusive In-Plasma Initiated Oxidation Processes Occurring at Polymeric Surfaces upon O 2 Admixtures to Medium Pressure Ar and N 2 DBD Treatments. Polymers (Basel) 2023; 15:2978. [PMID: 37514368 PMCID: PMC10386160 DOI: 10.3390/polym15142978] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2023] [Revised: 07/03/2023] [Accepted: 07/04/2023] [Indexed: 07/30/2023] Open
Abstract
Polymeric surfaces have been increasingly plasma-activated to adopt adequate chemistries, enabling their use in different applications. An unavoidable surface oxygen insertion upon exposure to non-oxygen-containing plasmas was always observed and mainly attributed to in-plasma oxidation stemming from O2 impurities in plasma reactors. Therefore, this work investigates exclusive in-plasma oxidation processes occurring on polyethylene surfaces by purposely admixing different O2 concentrations to medium-pressure Ar and N2 dielectric barrier discharges (base pressure: 10-7 kPa). Hence, distinctive optical emission spectroscopy and in-situ X-ray photoelectron spectroscopy (XPS) data were carefully correlated. Pure N2 discharge triggered an unprecedented surface incorporation of large nitrogen (29%) and low oxygen (3%) amounts. A steep rise in the O-content (10%) at the expense of nitrogen (15%) was detected upon the addition of 6.2 × 10-3% of O2 to the feed gas. When the added O2 exceeded 1%, the N content was completely quenched. Around 8% of surface oxygen was detected in Ar plasma due to high-energy Ar metastables creating more surface radicals that reacted with O2 impurities. When adding only 6.2 × 10-3% of O2 to Ar, the surface O content considerably increased to 12%. Overall, in-plasma oxidation caused by O2 impurities can strikingly change the surface chemistry of N2 and Ar plasma-treated polymers.
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Affiliation(s)
- Rouba Ghobeira
- Research Unit Plasma Technology (RUPT), Department of Applied Physics, Faculty of Engineering and Architecture, Ghent University, 9000 Ghent, Belgium
| | - Parinaz Saadat Esbah Tabaei
- Research Unit Plasma Technology (RUPT), Department of Applied Physics, Faculty of Engineering and Architecture, Ghent University, 9000 Ghent, Belgium
- Department of Chemical Engineering, School of Engineering & Applied Sciences, University of Rochester, New York, NY 14627, USA
| | - Anton Nikiforov
- Research Unit Plasma Technology (RUPT), Department of Applied Physics, Faculty of Engineering and Architecture, Ghent University, 9000 Ghent, Belgium
| | - Rino Morent
- Research Unit Plasma Technology (RUPT), Department of Applied Physics, Faculty of Engineering and Architecture, Ghent University, 9000 Ghent, Belgium
| | - Nathalie De Geyter
- Research Unit Plasma Technology (RUPT), Department of Applied Physics, Faculty of Engineering and Architecture, Ghent University, 9000 Ghent, Belgium
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Liu L, Shao G, Ma C, Nikiforov A, De Geyter N, Morent R. Plasma-catalysis for VOCs decomposition: A review on micro- and macroscopic modeling. J Hazard Mater 2023; 451:131100. [PMID: 36893595 DOI: 10.1016/j.jhazmat.2023.131100] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/02/2022] [Revised: 02/23/2023] [Accepted: 02/26/2023] [Indexed: 06/18/2023]
Abstract
Plasma-catalysis has been recognized as a promising method to decompose hazardous volatile organic compounds (VOCs) since many years ago. To understand the fundamental mechanisms of VOCs decomposition by plasma-catalysis systems, both experimental and modeling studies have been extensively carried out. However, literature on summarized modeling methodologies is still scarce. In this short review, we therefore present a comprehensive overview of modeling methodologies ranging from microscopic to macroscopic modeling in plasma-catalysis for VOCs decomposition. The modeling methods of VOCs decomposition by plasma and plasma-catalysis are classified and summarized. The roles of plasma and plasma-catalyst interactions in VOCs decomposition are also critically examined. Taking the current advances in understanding the decomposition mechanisms of VOCs into account, we finally provide our perspectives for future research directions. This short review aims to stimulate the further development of plasma-catalysis for VOCs decomposition in both fundamental studies and practical applications with advanced modeling methods.
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Affiliation(s)
- Lu Liu
- School of Energy and Power Engineering, Jiangsu University, Zhenjiang 212013, China.
| | - Guangcai Shao
- School of Energy and Power Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Chuanlong Ma
- Research Unit Plasma Technology (RUPT), Department of Applied Physics, Faculty of Engineering and Architecture, Ghent University, 9000 Ghent, Belgium
| | - Anton Nikiforov
- Research Unit Plasma Technology (RUPT), Department of Applied Physics, Faculty of Engineering and Architecture, Ghent University, 9000 Ghent, Belgium
| | - Nathalie De Geyter
- Research Unit Plasma Technology (RUPT), Department of Applied Physics, Faculty of Engineering and Architecture, Ghent University, 9000 Ghent, Belgium
| | - Rino Morent
- Research Unit Plasma Technology (RUPT), Department of Applied Physics, Faculty of Engineering and Architecture, Ghent University, 9000 Ghent, Belgium
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Mirzaei M, Dodi G, Gardikiotis I, Pasca SA, Mirdamadi S, Subra G, Echalier C, Puel C, Morent R, Ghobeira R, Soleymanzadeh N, Moser M, Goriely S, Shavandi A. 3D high-precision melt electro written polycaprolactone modified with yeast derived peptides for wound healing. Biomater Adv 2023; 149:213361. [PMID: 36965401 DOI: 10.1016/j.bioadv.2023.213361] [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: 09/01/2022] [Revised: 01/27/2023] [Accepted: 02/25/2023] [Indexed: 03/12/2023]
Abstract
In this study melt electro written (MEW) scaffolds of poly(ε-caprolactone) PCL are decorated with anti-inflammatory yeast-derived peptide for skin wound healing. Initially, 13 different yeast-derived peptides were screened and analyzed using both in vitro and in vivo assays. The MEW scaffolds are functionalized with the selected peptide VLSTSFPPW (VW-9) with the highest activity in reducing pro-inflammatory cytokines and stimulating fibroblast proliferation, migration, and collagen production. The peptide was conjugated to the MEW scaffolds using carbodiimide (CDI) and thiol chemistry, with and without plasma treatment, as well as by directly mixing the peptide with the polymer before printing. The MEW scaffolds modified using CDI and thiol chemistry with plasma treatment showed improved fibroblast and macrophage penetration and adhesion, as well as increased cell proliferation and superior anti-inflammatory properties, compared to the other groups. When applied to full-thickness excisional wounds in rats, the peptide-modified MEW scaffold significantly enhanced the healing process compared to controls (p < 0.05). This study provides proof of concept for using yeast-derived peptides to functionalize biomaterials for skin wound healing.
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Affiliation(s)
- Mahta Mirzaei
- Université libre de Bruxelles (ULB), École polytechnique de Bruxelles - BioMatter unit, Avenue F.D. Roosevelt, 50 - CP 165/61, 1050 Brussels, Belgium; Centre for Food Chemistry and Technology, Ghent University Global Campus, 119-5 Songdomunhwa-Ro, Yeonsu-Gu, Incheon, South Korea; Department of Food Technology, Safety and Health, Faculty of Bioscience Engineering, Ghent University, Coupure Links 653, B-9000 Ghent, Belgium
| | - Gianina Dodi
- Faculty of Medical Bioengineering, Grigore T. Popa University of Medicine and Pharmacy of Iasi, Romania; Advanced Research and Development Center for Experimental Medicine, Grigore T. Popa University of Medicine and Pharmacy of Iasi, Romania
| | - Ioannis Gardikiotis
- Advanced Research and Development Center for Experimental Medicine, Grigore T. Popa University of Medicine and Pharmacy of Iasi, Romania
| | - Sorin-Aurelian Pasca
- Pathology Department, Faculty of Veterinary Medicine, Ion Ionescu de la Brad Iasi University of Life Sciences, Romania
| | - Saeed Mirdamadi
- Department of Biotechnology, Iranian Research Organization for Science and Technology (IROST), Tehran, Iran
| | - Gilles Subra
- IBMM, Univ Montpellier, CNRS, ENSCM, Montpellier, France
| | | | - Chloé Puel
- IBMM, Univ Montpellier, CNRS, ENSCM, Montpellier, France
| | - Rino Morent
- IBMM, Univ Montpellier, CNRS, ENSCM, Montpellier, France
| | - Rouba Ghobeira
- Research Unit Plasma Technology (RUPT), Department of Applied Physics, Faculty of Architecture and Engineering, Ghent University, St-Pietersnieuwstraat 41 B4, 9000 Ghent, Belgium
| | - Nazila Soleymanzadeh
- Department of Biotechnology, Iranian Research Organization for Science and Technology (IROST), Tehran, Iran
| | - Muriel Moser
- ULB Center for Research in Immunology (U-CRI), Laboratory of Immunobiology, Université Libre de Bruxelles, Gosselies, Belgium.
| | - Stanislas Goriely
- ULB Center for Research in Immunology (U-CRI), Laboratory of Immunobiology, Université Libre de Bruxelles, Gosselies, Belgium.
| | - Amin Shavandi
- Université libre de Bruxelles (ULB), École polytechnique de Bruxelles - BioMatter unit, Avenue F.D. Roosevelt, 50 - CP 165/61, 1050 Brussels, Belgium.
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Navaneetha Pandiyaraj K, Vasu D, Raji A, Ghobeira R, Saadat Esbah Tabaei P, De Geyter N, Morent R, Ramkumar M, Pichumani M, Deshmukh R. Combined effects of direct plasma exposure and pre-plasma functionalized metal-doped graphene oxide nanoparticles on wastewater dye degradation. J IND ENG CHEM 2023. [DOI: 10.1016/j.jiec.2023.02.020] [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: 03/29/2023]
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10
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Egghe T, Morent R, Hoogenboom R, De Geyter N. Substrate-independent and widely applicable deposition of antibacterial coatings. Trends Biotechnol 2023; 41:63-76. [PMID: 35863949 DOI: 10.1016/j.tibtech.2022.06.003] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2022] [Revised: 05/25/2022] [Accepted: 06/09/2022] [Indexed: 12/27/2022]
Abstract
Antibacterial coatings are regarded as a necessary tool to prevent implant-related infections. Substrate-independent and widely applicable coating techniques are gaining significant interest to synthesize different types of antibacterial films, which can be relevant from a fundamental and application-oriented perspective. Plasma polymer- and polydopamine-based antibacterial coatings represent the most widely studied and versatile approaches among these coating techniques. Both single- and dual-functional antibacterial coatings can be fabricated with these approaches and a variety of dual-functional antibacterial coating strategies can still be explored in future work. These coatings can potentially be used for a wide range of different implants (material, shape, and size). However, for most implants, significantly more fundamental knowledge needs to be gained before these coatings can find real-life use.
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Affiliation(s)
- Tim Egghe
- Research Unit Plasma Technology (RUPT), Department of Applied Physics, Faculty of Engineering and Architecture, Ghent University, Sint-Pietersnieuwstraat 41 B4, 9000 Ghent, Belgium; Supramolecular Chemistry Group, Centre of Macromolecular Chemistry (CMaC), Department of Organic and Macromolecular Chemistry, Faculty of Sciences, Ghent University, Krijgslaan 281 S4, 9000 Ghent, Belgium.
| | - Rino Morent
- Research Unit Plasma Technology (RUPT), Department of Applied Physics, Faculty of Engineering and Architecture, Ghent University, Sint-Pietersnieuwstraat 41 B4, 9000 Ghent, Belgium
| | - Richard Hoogenboom
- Supramolecular Chemistry Group, Centre of Macromolecular Chemistry (CMaC), Department of Organic and Macromolecular Chemistry, Faculty of Sciences, Ghent University, Krijgslaan 281 S4, 9000 Ghent, Belgium
| | - Nathalie De Geyter
- Research Unit Plasma Technology (RUPT), Department of Applied Physics, Faculty of Engineering and Architecture, Ghent University, Sint-Pietersnieuwstraat 41 B4, 9000 Ghent, Belgium
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11
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Ghobeira R, Wieringa P, Van Vrekhem S, Aliakbarshirazi S, Narimisa M, Onyshchenko Y, De Geyter N, Moroni L, Morent R. Multifaceted polymeric nerve guidance conduits with distinctive double-layered architecture and plasma-induced inner chemistry gradient for the repair of critical-sized defects. Biomater Adv 2022; 143:213183. [PMID: 36371971 DOI: 10.1016/j.bioadv.2022.213183] [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: 06/16/2022] [Revised: 10/30/2022] [Accepted: 11/01/2022] [Indexed: 06/16/2023]
Abstract
Despite tissue engineering advances, current nerve guidance conduits (NGCs) are still failing in repairing critical-sized defects. This study aims, therefore, at tackling large nerve gaps (2 cm) by designing NGCs possessing refined physicochemical properties enhancing the activity of Schwann cells (SCs) that support nerve regeneration over long distances. As such, a combinatorial strategy adopting novel plasma-induced surface chemistry and architectural heterogeneity was considered. A mechanically suitable copolymer (Polyactive®) was electrospun to produce nanofibrous NGCs mimicking the extracellular matrix. An innovative seamless double-layered architecture consisting of an inner wall comprised of bundles of aligned fibers with intercalated random fibers and an outer wall fully composed of random fibers was conceived to synergistically provide cell guidance cues and sufficient nutrient inflow. NGCs were subjected to argon plasma treatments using a dielectric barrier discharge (DBD) and a plasma jet (PJ). Surface chemical changes were examined by advanced X-ray photoelectron spectroscopy (XPS) micro-mappings. The DBD homogeneously increased the surface oxygen content from 17 % to 28 % on the inner wall. The PJ created a gradient chemistry throughout the inner wall with an oxygen content gradually increasing from 21 % to 30 %. In vitro studies revealed enhanced primary SC adhesion, elongation and proliferation on plasma-treated NGCs. A cell gradient was observed on the PJ-treated NGCs thus underlining the favorable oxygen gradient in promoting cell chemotaxis. A gradual change from circular to highly elongated SC morphologies mimicking the bands of Büngner was visualized along the gradient. Overall, plasma-treated NGCs are promising candidates paving the way towards critical nerve gap repair.
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Affiliation(s)
- Rouba Ghobeira
- Research Unit Plasma Technology (RUPT), Department of Applied Physics, Faculty of Engineering and Architecture, Ghent University, Sint-Pietersnieuwstraat 41 B4, 9000 Ghent, Belgium.
| | - Paul Wieringa
- Department of Complex Tissue Regeneration, MERLN Institute for Technology-Inspired Regenerative Medicine, Maastricht University, Universiteitsingel 40, 6229ER, Maastricht, the Netherlands
| | - Stijn Van Vrekhem
- Research Unit Plasma Technology (RUPT), Department of Applied Physics, Faculty of Engineering and Architecture, Ghent University, Sint-Pietersnieuwstraat 41 B4, 9000 Ghent, Belgium
| | - Sheida Aliakbarshirazi
- Research Unit Plasma Technology (RUPT), Department of Applied Physics, Faculty of Engineering and Architecture, Ghent University, Sint-Pietersnieuwstraat 41 B4, 9000 Ghent, Belgium
| | - Mehrnoush Narimisa
- Research Unit Plasma Technology (RUPT), Department of Applied Physics, Faculty of Engineering and Architecture, Ghent University, Sint-Pietersnieuwstraat 41 B4, 9000 Ghent, Belgium
| | - Yuliia Onyshchenko
- Research Unit Plasma Technology (RUPT), Department of Applied Physics, Faculty of Engineering and Architecture, Ghent University, Sint-Pietersnieuwstraat 41 B4, 9000 Ghent, Belgium
| | - Nathalie De Geyter
- Research Unit Plasma Technology (RUPT), Department of Applied Physics, Faculty of Engineering and Architecture, Ghent University, Sint-Pietersnieuwstraat 41 B4, 9000 Ghent, Belgium
| | - Lorenzo Moroni
- Department of Complex Tissue Regeneration, MERLN Institute for Technology-Inspired Regenerative Medicine, Maastricht University, Universiteitsingel 40, 6229ER, Maastricht, the Netherlands
| | - Rino Morent
- Research Unit Plasma Technology (RUPT), Department of Applied Physics, Faculty of Engineering and Architecture, Ghent University, Sint-Pietersnieuwstraat 41 B4, 9000 Ghent, Belgium
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12
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Guo Y, Ghobeira R, Sun Z, Shali P, Morent R, De Geyter N. Atmospheric pressure plasma jet treatment of PLA/PAni solutions: Enhanced morphology, improved yield of electrospun nanofibers and concomitant doping behaviour. POLYMER 2022. [DOI: 10.1016/j.polymer.2022.125502] [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: 11/10/2022]
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13
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Sonar S, giraudon JM, Lamonier JF, Morent R, De Geyter N, Löfberg A. Toluene removal by a sequential adsorption‐thermal catalytic process on Ag/Hopcalite. ChemCatChem 2022. [DOI: 10.1002/cctc.202200926] [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: 11/08/2022]
Affiliation(s)
- Shilpa Sonar
- University of Lille Faculty of Science and Technology: Universite de Lille Faculte des Sciences et Technologies département de chimie FRANCE
| | - Jean-Marc giraudon
- Université de Lille department of chemistry Bât C3 Cité scientifique 59655 Villeneuve d'Ascq FRANCE
| | - Jean-François Lamonier
- University of Lille Faculty of Science and Technology: Universite de Lille Faculte des Sciences et Technologies département de chimie FRANCE
| | - Rino Morent
- Ghent University: Universiteit Gent RUPT BELGIUM
| | | | - Axel Löfberg
- University of Lille Faculty of Science and Technology: Universite de Lille Faculte des Sciences et Technologies UCCS FRANCE
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14
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Chang T, Wang Y, Wang Y, Zhao Z, Shen Z, Huang Y, Veerapandian SKP, De Geyter N, Wang C, Chen Q, Morent R. A critical review on plasma-catalytic removal of VOCs: Catalyst development, process parameters and synergetic reaction mechanism. Sci Total Environ 2022; 828:154290. [PMID: 35248631 DOI: 10.1016/j.scitotenv.2022.154290] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [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: 11/26/2021] [Revised: 02/28/2022] [Accepted: 02/28/2022] [Indexed: 06/14/2023]
Abstract
It is urgent to control the emission of volatile organic compounds (VOCs) due to their harmful effects on the environment and human health. A hybrid system integrating non-thermal-plasma and catalysis is regarded as one of the most promising technologies for VOCs removal due to their high VOCs removal efficiency, product selectivity and energy efficiency. This review systematically documents the main findings and improvements of VOCs removal using plasma-catalysis technology in recent 10 years. To better understand the fundamental relation between different aspects of this research field, this review mainly addresses the catalyst development, key influential factors, generation of by-products and reaction mechanism of VOCs decomposition in the plasma-catalysis process. Also, a comparison of the performance in various VOCs removal processes is provided. Particular emphasis is given to the importance of the selected catalyst and the synergy of plasma and catalyst in the VOCs removal in the hybrid system, which can be used as a reference point for future studies in this field.
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Affiliation(s)
- Tian Chang
- School of Environmental Science and Engineering, Shaanxi University of Science and Technology, Xi'an 710021, China; Department of Environmental Science and Engineering, Xi'an Jiaotong University, Xi'an 710049, China; Research Unit Plasma Technology, Department of Applied Physics, Faculty of Engineering and Architecture, Ghent University, Sint-Pietersnieuwstraat 41 - B4, 9000 Ghent, Belgium; State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an 710049, China; State Key Laboratory of High-efficiency Utilization of Coal and Green Chemical Engineering, Ningxia University, Yinchuan 750021, China
| | - Yu Wang
- School of Environmental Science and Engineering, Shaanxi University of Science and Technology, Xi'an 710021, China
| | - Yaqi Wang
- School of Environmental Science and Engineering, Shaanxi University of Science and Technology, Xi'an 710021, China
| | - Zuotong Zhao
- School of Environmental Science and Engineering, Shaanxi University of Science and Technology, Xi'an 710021, China
| | - Zhenxing Shen
- Department of Environmental Science and Engineering, Xi'an Jiaotong University, Xi'an 710049, China
| | - Yu Huang
- State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an 710049, China
| | - Savita K P Veerapandian
- Research Unit Plasma Technology, Department of Applied Physics, Faculty of Engineering and Architecture, Ghent University, Sint-Pietersnieuwstraat 41 - B4, 9000 Ghent, Belgium.
| | - Nathalie De Geyter
- Research Unit Plasma Technology, Department of Applied Physics, Faculty of Engineering and Architecture, Ghent University, Sint-Pietersnieuwstraat 41 - B4, 9000 Ghent, Belgium
| | - Chuanyi Wang
- School of Environmental Science and Engineering, Shaanxi University of Science and Technology, Xi'an 710021, China
| | - Qingcai Chen
- School of Environmental Science and Engineering, Shaanxi University of Science and Technology, Xi'an 710021, China.
| | - Rino Morent
- Research Unit Plasma Technology, Department of Applied Physics, Faculty of Engineering and Architecture, Ghent University, Sint-Pietersnieuwstraat 41 - B4, 9000 Ghent, Belgium
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15
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Raji A, Vasu D, Pandiyaraj KN, Ghobeira R, De Geyter N, Morent R, Misra VC, Ghorui S, Pichumani M, Deshmukh RR, Nadagouda MN. Combinatorial effects of non-thermal plasma oxidation processes and photocatalytic activity on the inactivation of bacteria and degradation of toxic compounds in wastewater. RSC Adv 2022; 12:14246-14259. [PMID: 35558835 PMCID: PMC9093588 DOI: 10.1039/d1ra09337a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2021] [Accepted: 04/11/2022] [Indexed: 12/01/2022] Open
Abstract
The simultaneous presence of hazardous chemicals and pathogenic microorganisms in wastewater is tremendously endangering the environment and human health. Therefore, developing a mitigation strategy for adequately degrading toxic compounds and inactivating/killing microorganisms is urgently needed to protect ecosystems. In this paper, the synergetic effects of the photocatalytic activity of TiO2 and Cu–TiO2 nanoparticles (NPs) and the oxidation processes of non-thermal atmospheric pressure plasma (NTAPP) were comprehensively investigated for both the inactivation/killing of common water contaminating bacteria (Escherichia coli (E. coli)) and the degradation of direct textile wastewater (DTW). The photocatalytic NPs were synthesized using the hydrothermal method and further characterized employing field emission scanning electron microscopy (FESEM), X-ray diffraction (XRD), ultraviolet-visible diffuse reflection spectroscopy (UV-Vis DRS) and photoluminescence (PL). Results revealed the predominant presence of the typical anatase phase for both the flower-like TiO2 and the multipod-like Cu–TiO2 structures. UV-Vis DRS and PL analyses showed that the addition of Cu dopants reduced the bandgap and increased oxygen defect vacancies of TiO2. The inactivation of E. coli in suspension and degradation of DTW were then examined upon treating the aqueous media with various plasma alone and plasma/NPs conditions (Ar plasma, Ar + O2 plasma and Ar + N2 plasma, Ar plasma + TiO2 NPs and Ar plasma + Cu–TiO2 NPs). Primary and secondary excited species such as OH˙, O, H and N2* generated in plasma during the processes were recognized by in situ optical emission spectrometry (OES) measurements. Several other spectroscopic analyses were further employed to quantify some reactive oxygen species (ROS) such as OH, H2O2 and O3 generated during the processes. Moreover, the changes in the pH and electrical conductivity (EC) of the solutions were also assessed. The inactivation of bacteria was examined by the colony-forming unit (CFU) method after plating the treated suspensions on agar, and the degradation of organic compounds in DTW was further validated by measuring the total organic carbon (TOC) removal efficiency. All results collectively revealed that the combinatorial plasma-photocatalysis strategy involving Cu–TiO2 NPs and argon plasma jet produced higher concentrations of ROS and proved to be a promising one-step wastewater treatment effectively killing microorganisms and degrading toxic organic compounds. Contamination of water is a serious issue across the world. The proposed plasma synergetic treat has great potential to treat contaminated water in an environmentally friendly way.![]()
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Affiliation(s)
- A Raji
- Research Division of Plasma Processing (RDPP), Department of Physics, Sri Shakthi Institute of Engineering and Technology Coimbatore 641062 India +91-8012097173
| | - D Vasu
- Research Division of Plasma Processing (RDPP), Department of Physics, Sri Shakthi Institute of Engineering and Technology Coimbatore 641062 India +91-8012097173
| | - K Navaneetha Pandiyaraj
- Department of Physics, Sri Ramakrishna Mission Vidyalaya College of Arts and Science Coimbatore-641020 India
| | - Rouba Ghobeira
- Research Unit Plasma Technology (RUPT), Department of Applied Physics, Faculty of Engineering and Architecture, Ghent University Ghent 9000 Belgium
| | - Nathalie De Geyter
- Research Unit Plasma Technology (RUPT), Department of Applied Physics, Faculty of Engineering and Architecture, Ghent University Ghent 9000 Belgium
| | - Rino Morent
- Research Unit Plasma Technology (RUPT), Department of Applied Physics, Faculty of Engineering and Architecture, Ghent University Ghent 9000 Belgium
| | | | - S Ghorui
- Laser and Plasma Technology Division, Bhabha Atomic Research Centre Trombay Mumbai-400085 India
| | - M Pichumani
- Department of Nanoscience and Technology, Sri Ramakrishna Engineering College Coimbatore-641022 India
| | - R R Deshmukh
- Department of Physics, Institute of Chemical Technology Matunga Mumbai India
| | - Mallikarjuna N Nadagouda
- Department of Mechanical and Materials Engineering, Wright State University Dayton Ohio 45435 USA
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16
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Abednatanzi S, Gohari Derakhshandeh P, Dalapati S, Veerapandian SKP, Froissart AC, Epping JD, Morent R, De Geyter N, Van Der Voort P. Metal-Free Chemoselective Reduction of Nitroarenes Catalyzed by Covalent Triazine Frameworks: The Role of Embedded Heteroatoms. ACS Appl Mater Interfaces 2022; 14:15287-15297. [PMID: 35322660 DOI: 10.1021/acsami.2c01091] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Chemoselective reduction of nitroarenes to arylamines is a core technology for the synthesis of numerous chemicals. The technology, however, relies on applying precious noble metal catalysts. We present our findings on the development of robust nanoporous covalent triazine frameworks (CTFs) as metal-free catalysts for the green chemoselective reduction of nitroarenes. The turnover frequency is found to be 43.03 h-1, exceeding activities of the heteroatom-doped carbon nanomaterials by a factor of 30. The X-ray photoelectron spectroscopy and control experiments provide further insights into the nature of active species for prompt catalysis. This report confirms the importance of quaternary 'N' and 'F' atom functionalities to create active hydrogen species via charge delocalization as a critical step in improving the catalytic activity.
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Affiliation(s)
- Sara Abednatanzi
- Center for Ordered Materials, Organometallics and Catalysis, Ghent University, Krijgslaan 281-S3, 9000 Gent, Belgium
| | - Parviz Gohari Derakhshandeh
- Center for Ordered Materials, Organometallics and Catalysis, Ghent University, Krijgslaan 281-S3, 9000 Gent, Belgium
| | - Sasanka Dalapati
- Center for Ordered Materials, Organometallics and Catalysis, Ghent University, Krijgslaan 281-S3, 9000 Gent, Belgium
- Department of Materials Science, School of Technology, Central University of Tamil Nadu (CUTN), Thiruvarur 610005, Tamil Nadu, India
| | - Savita K P Veerapandian
- Research Unit Plasma Technology (RUPT), Department of Applied Physics, Faculty of Engineering and Architecture, Ghent University, 9000 Ghent, Belgium
| | - Anne-Claire Froissart
- Center for Ordered Materials, Organometallics and Catalysis, Ghent University, Krijgslaan 281-S3, 9000 Gent, Belgium
| | - Jan Dirk Epping
- Institut für Chemie, Technische Universität Berlin, Straße des 17. Juni 115, 10623 Berlin, Germany
| | - Rino Morent
- Research Unit Plasma Technology (RUPT), Department of Applied Physics, Faculty of Engineering and Architecture, Ghent University, 9000 Ghent, Belgium
| | - Nathalie De Geyter
- Research Unit Plasma Technology (RUPT), Department of Applied Physics, Faculty of Engineering and Architecture, Ghent University, 9000 Ghent, Belgium
| | - Pascal Van Der Voort
- Center for Ordered Materials, Organometallics and Catalysis, Ghent University, Krijgslaan 281-S3, 9000 Gent, Belgium
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17
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Egghe T, Ghobeira R, Esbah Tabaei PS, Morent R, Hoogenboom R, De Geyter N. Silanization of Plasma-Activated Hexamethyldisiloxane-Based Plasma Polymers for Substrate-Independent Deposition of Coatings with Controlled Surface Chemistry. ACS Appl Mater Interfaces 2022; 14:4620-4636. [PMID: 35014795 DOI: 10.1021/acsami.1c18223] [Citation(s) in RCA: 2] [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] [Indexed: 06/14/2023]
Abstract
Plasma polymerization has emerged as an appealing technique for surface modification because of its advantages over a variety of conventional techniques, including ease-of-use and the possibility to modify nearly any substrate. One of the main challenges of plasma polymer-based surface modification, however, is having control over the coating chemistry, as plasma deposition generates a diversity of chemical structures. Therefore, this study presents an alternative plasma-based method for the fabrication of coatings that contain selective functionalities. In a first step, hexamethyldisiloxane (HMDSO) plasma polymerization is performed in a medium-pressure dielectric barrier discharge (DBD) to deposit polydimethylsiloxane (PDMS)-like coatings. In a second step, this coating is exposed to an air plasma in a similar DBD setup to introduce silanol groups on the surface. These groups are used in a third and final step as anchoring points for grafting of (3-aminopropyl)triethoxysilane (APTES) and (3-bromopropyl)trichlorosilane (BrPTCS) to selectively introduce amino or bromo groups, respectively. X-ray photoelectron spectroscopy (XPS) and water contact angle (WCA) measurements indicated that the first two steps were successful. Moreover, the coating could be synthesized on three different surfaces, namely, glass, ultrahigh-molecular-weight polyethylene, and polytetrafluoroethylene, indicating the wide applicability of the developed procedure. Afterward, XPS also proved that the APTES and BrPTCS grafting resulted in the formation of a coating containing primary amines and alkyl bromides, respectively, in combination with an organosilicon matrix containing silanol groups as remaining reactive groups, proving the successful synthesis of selective functional plasma-based coatings. The intermediate air-plasma-activation step was demonstrated to be necessary for successful and stable grafting of the final layer. In conclusion, this study established a general procedure for the development of coatings with selective functionality that can be applied on a wide variety of substrates for, e.g., biosensor applications, biomolecule, or polymer immobilization or for the synthesis of antibacterial coatings.
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Affiliation(s)
- Tim Egghe
- Research Unit Plasma Technology (RUPT), Department of Applied Physics, Faculty of Engineering and Architecture, Ghent University, Sint-Pietersnieuwstraat 41 B4, 9000 Ghent, Belgium
- Supramolecular Chemistry Group, Centre of Macromolecular Chemistry (CMaC), Department of Organic and Macromolecular Chemistry, Faculty of Sciences, Ghent University, Krijgslaan 281 S4, 9000 Ghent, Belgium
| | - Rouba Ghobeira
- Research Unit Plasma Technology (RUPT), Department of Applied Physics, Faculty of Engineering and Architecture, Ghent University, Sint-Pietersnieuwstraat 41 B4, 9000 Ghent, Belgium
| | - Parinaz Saadat Esbah Tabaei
- Research Unit Plasma Technology (RUPT), Department of Applied Physics, Faculty of Engineering and Architecture, Ghent University, Sint-Pietersnieuwstraat 41 B4, 9000 Ghent, Belgium
| | - Rino Morent
- Research Unit Plasma Technology (RUPT), Department of Applied Physics, Faculty of Engineering and Architecture, Ghent University, Sint-Pietersnieuwstraat 41 B4, 9000 Ghent, Belgium
| | - Richard Hoogenboom
- Supramolecular Chemistry Group, Centre of Macromolecular Chemistry (CMaC), Department of Organic and Macromolecular Chemistry, Faculty of Sciences, Ghent University, Krijgslaan 281 S4, 9000 Ghent, Belgium
| | - Nathalie De Geyter
- Research Unit Plasma Technology (RUPT), Department of Applied Physics, Faculty of Engineering and Architecture, Ghent University, Sint-Pietersnieuwstraat 41 B4, 9000 Ghent, Belgium
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18
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Gromov M, Leonova K, Britun N, De Geyter N, Morent R, Snyders R, Nikiforov A. Plasma nitrogen fixation in the presence of a liquid interface: role of OH radicals. REACT CHEM ENG 2022. [DOI: 10.1039/d2re00014h] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [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]
Abstract
NO oxidation pathways in the presence of a plasma/liquid interface were experimentally studied in a high field pulsed discharge at different repetition frequencies.
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Affiliation(s)
- Mikhail Gromov
- Chimie des Interactions Plasma-Surface (ChIPS), CIRMAP, Mons University, 7000-Mons, Belgium
- Research Unit Plasma Technology (RUPT), Department of Applied Physics, Ghent University, 9000-Gent, Belgium
| | - Kseniia Leonova
- Chimie des Interactions Plasma-Surface (ChIPS), CIRMAP, Mons University, 7000-Mons, Belgium
| | - Nikolay Britun
- Center for Low-temperature Plasma Sciences, Nagoya University, Chikusa-ku, Nagoya, 464-8603 Japan
| | - Nathalie De Geyter
- Research Unit Plasma Technology (RUPT), Department of Applied Physics, Ghent University, 9000-Gent, Belgium
| | - Rino Morent
- Research Unit Plasma Technology (RUPT), Department of Applied Physics, Ghent University, 9000-Gent, Belgium
| | - Rony Snyders
- Chimie des Interactions Plasma-Surface (ChIPS), CIRMAP, Mons University, 7000-Mons, Belgium
- Materia Nova Research Centre, Parc Initialis, 7000-Mons, Belgium
| | - Anton Nikiforov
- Research Unit Plasma Technology (RUPT), Department of Applied Physics, Ghent University, 9000-Gent, Belgium
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19
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Madheswaran D, Sivan M, Valtera J, Kostakova EK, Egghe T, Asadian M, Novotny V, Nguyen NHA, Sevcu A, Morent R, De Geyter N, Lukas D. Composite yarns with antibacterial nanofibrous sheaths produced by collectorless alternating‐current electrospinning for suture applications. J Appl Polym Sci 2021. [DOI: 10.1002/app.51851] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Divyabharathi Madheswaran
- Faculty of Textile Engineering, Department of Nonwovens and Nanofibrous Materials Technical University of Liberec Liberec Czech Republic
| | - Manikandan Sivan
- Faculty of Textile Engineering, Department of Nonwovens and Nanofibrous Materials Technical University of Liberec Liberec Czech Republic
| | - Jan Valtera
- Faculty of Mechanical Engineering, Department of Textile Machine Design Technical University of Liberec Liberec Czech Republic
| | - Eva Kuzelova Kostakova
- Faculty of Science, Humanities, and Education, Department of Chemistry – Bioengineering Technical University of Liberec Liberec Czech Republic
| | - Tim Egghe
- Faculty of Engineering and Architecture, Department of Applied Physics Research Unit Plasma Technology (RUPT), Ghent University Ghent Belgium
| | - Mahtab Asadian
- Faculty of Engineering and Architecture, Department of Applied Physics Research Unit Plasma Technology (RUPT), Ghent University Ghent Belgium
| | - Vit Novotny
- Centre for Nanomaterials, Advanced Technologies and Innovations Technical University of Liberec Liberec Czech Republic
| | - Nhung H. A. Nguyen
- Centre for Nanomaterials, Advanced Technologies and Innovations Technical University of Liberec Liberec Czech Republic
| | - Alena Sevcu
- Faculty of Science, Humanities, and Education, Department of Chemistry – Bioengineering Technical University of Liberec Liberec Czech Republic
- Centre for Nanomaterials, Advanced Technologies and Innovations Technical University of Liberec Liberec Czech Republic
| | - Rino Morent
- Faculty of Engineering and Architecture, Department of Applied Physics Research Unit Plasma Technology (RUPT), Ghent University Ghent Belgium
| | - Nathalie De Geyter
- Faculty of Engineering and Architecture, Department of Applied Physics Research Unit Plasma Technology (RUPT), Ghent University Ghent Belgium
| | - David Lukas
- Faculty of Science, Humanities, and Education, Department of Chemistry – Bioengineering Technical University of Liberec Liberec Czech Republic
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Egghe T, Van Guyse JF, Ghobeira R, Morent R, Hoogenboom R, De Geyter N. Evaluation of cross-linking and degradation processes occurring at polymer surfaces upon plasma activation via size-exclusion chromatography. Polym Degrad Stab 2021. [DOI: 10.1016/j.polymdegradstab.2021.109543] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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21
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Ma C, Nikiforov A, De Geyter N, Dai X, Morent R, Ostrikov KK. Future antiviral polymers by plasma processing. Prog Polym Sci 2021; 118:101410. [PMID: 33967350 PMCID: PMC8085113 DOI: 10.1016/j.progpolymsci.2021.101410] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2020] [Revised: 01/11/2021] [Accepted: 04/22/2021] [Indexed: 12/31/2022]
Abstract
Coronavirus disease 2019 (COVID-19) is largely threatening global public health, social stability, and economy. Efforts of the scientific community are turning to this global crisis and should present future preventative measures. With recent trends in polymer science that use plasma to activate and enhance the functionalities of polymer surfaces by surface etching, surface grafting, coating and activation combined with recent advances in understanding polymer-virus interactions at the nanoscale, it is promising to employ advanced plasma processing for smart antiviral applications. This trend article highlights the innovative and emerging directions and approaches in plasma-based surface engineering to create antiviral polymers. After introducing the unique features of plasma processing of polymers, novel plasma strategies that can be applied to engineer polymers with antiviral properties are presented and critically evaluated. The challenges and future perspectives of exploiting the unique plasma-specific effects to engineer smart polymers with virus-capture, virus-detection, virus-repelling, and/or virus-inactivation functionalities for biomedical applications are analysed and discussed.
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Key Words
- ACE2, angiotensin-converting enzyme 2
- Antiviral polymers
- BSA, bovine serum albumin
- CF4, tetrafluoromethane
- COVID-19, coronavirus disease 2019
- DC, direct current
- H2, hydrogen
- HBV, hepatitis B virus
- HMDSO, hexamethyldisiloxane
- IPNpp, plasma polymerized isopentyl nitrite
- MERS-CoV, middle east respiratory syndrome
- MW, microwave
- NO, nitric oxide
- PC, polycarbonate
- PDMS, polydimethylsiloxane
- PECVD, plasma-enhanced chemical vapour deposition
- PEG, polyethene glycol
- PET, polyethene terephthalate
- PFM, pentafluorophenyl methacrylate
- PP, polypropylene
- PPE, personal protective equipment
- PS, polystyrene
- PTFE, polytetrafluoroethylene
- PVC, polyvinyl chloride
- REF, reference
- RF, radio frequency
- RONS, reactive oxygen and nitrogen species
- RSV, respiratory syncytial virus
- RT-PCR, reverse transcription-polymerase chain reaction
- RV, rhinovirus
- SARS-CoV-2, severe acute respiratory syndrome coronavirus 2
- SEM, scanning electron microscopy
- TEOS-O2, tetraethyl orthosilicate and oxygen
- UV, ultraviolet
- WCA, water contact angle
- plasma processing
- surface modification
- ΔD, the variation of the dissipation
- Δf, the frequency shift
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Affiliation(s)
- Chuanlong Ma
- Research Unit Plasma Technology (RUPT), Department of Applied Physics, Ghent University, Sint-Pietersnieuwstraat 41, B4, 9000 Ghent, Belgium
| | - Anton Nikiforov
- Research Unit Plasma Technology (RUPT), Department of Applied Physics, Ghent University, Sint-Pietersnieuwstraat 41, B4, 9000 Ghent, Belgium
| | - Nathalie De Geyter
- Research Unit Plasma Technology (RUPT), Department of Applied Physics, Ghent University, Sint-Pietersnieuwstraat 41, B4, 9000 Ghent, Belgium
| | - Xiaofeng Dai
- Affiliated Hospital of Xi'an Jiaotong University, Xi'an, 710061, China
- Wuxi School of Medicine, Jiangnan University, Wuxi, 214122, China
| | - Rino Morent
- Research Unit Plasma Technology (RUPT), Department of Applied Physics, Ghent University, Sint-Pietersnieuwstraat 41, B4, 9000 Ghent, Belgium
| | - Kostya Ken Ostrikov
- School of Chemistry and Physics and QUT Centre for Materials Science, Queensland University of Technology (QUT), 4000 Brisbane, Australia
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22
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Pandiyaraj KN, Vasu D, Ghobeira R, Tabaei PSE, De Geyter N, Morent R, Pichumani M, Padmanabhanan PVA, Deshmukh RR. Dye wastewater degradation by the synergetic effect of an atmospheric pressure plasma treatment and the photocatalytic activity of plasma-functionalized Cu‒TiO 2 nanoparticles. J Hazard Mater 2021; 405:124264. [PMID: 33153792 DOI: 10.1016/j.jhazmat.2020.124264] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/10/2020] [Revised: 10/09/2020] [Accepted: 10/09/2020] [Indexed: 06/11/2023]
Abstract
In this paper, the photocatalytic activity of plasma-functionalized Cu-doped TiO2 nanoparticles (NPs) and the oxidization process of atmospheric pressure plasma jet were combined for the degradation of reactive red-198 (RR-198) in aqueous solution. The first part of the study was thus devoted to subject Cu-‒TiO2 NPs synthetized by the sol-gel method to various plasma treatments operating in air, argon, oxygen and nitrogen to improve their degradation efficiency. The physicochemical properties of the NPs were then assessed by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS) and scanning electron microscopy (SEM) measurements. XRD results indicated the predominant presence of the anatase phase which is the most photoactive form of TiO2. The XPS analysis revealed that the different plasma treatments triggered the formation of oxygen vacancies, Ti3+ oxidation state and Cu2+ oxidation state on the surface of Cu-‒TiO2 NPs. These changes, known to prevent the recombination of electron-hole pair, have led to a reduction in the bandgap that was more pronounced for the N2 plasma-treated NPs. The second part of the paper explored the actual degradation of RR-198 in aqueous solution by an Ar plasma treatment alone or combined with the plasma pre-treated Cu-‒TiO2 NPs. Optical emission spectroscopy (OES) and spectrophotometric analyses showed that the synergetic effect of Ar plasma and N2 plasma-treated NPs produced the highest concentration of OH• radicals and H2O2 species which led to the highest RR-198 degradation efficiency. This was further confirmed by pH, electrical conductivity and total organic carbon (TOC) removal measurements. The degradation of RR-198 was determined using UV-Vis spectroscopy and high-performance liquid chromatography (HPLC). Overall, it can be concluded that plasma-assisted processes illustrated by a combination of a direct plasma treatment with plasma-functionalized Cu-‒TiO2 NPs can be used in various textile and pharmaceutical industries as a highly effective treatment of their effluents before discharging.
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Affiliation(s)
- K Navaneetha Pandiyaraj
- Research Division of Plasma Processing (RDPP), Department of Physics, Sri Shakthi Institute of Engineering and Technology, Coimbatore 641062, India.
| | - D Vasu
- Research Division of Plasma Processing (RDPP), Department of Physics, Sri Shakthi Institute of Engineering and Technology, Coimbatore 641062, India
| | - Rouba Ghobeira
- Research Unit Plasma Technology (RUPT), Department of Applied Physics, Faculty of Architecture and Engineering, Ghent University, Sint Pietersnieuwstraat 41 B4, Ghent 9000, Belgium
| | - Parinaz Saadat Esbah Tabaei
- Research Unit Plasma Technology (RUPT), Department of Applied Physics, Faculty of Architecture and Engineering, Ghent University, Sint Pietersnieuwstraat 41 B4, Ghent 9000, Belgium
| | - Nathalie De Geyter
- Research Unit Plasma Technology (RUPT), Department of Applied Physics, Faculty of Architecture and Engineering, Ghent University, Sint Pietersnieuwstraat 41 B4, Ghent 9000, Belgium
| | - Rino Morent
- Research Unit Plasma Technology (RUPT), Department of Applied Physics, Faculty of Architecture and Engineering, Ghent University, Sint Pietersnieuwstraat 41 B4, Ghent 9000, Belgium
| | - M Pichumani
- Department of Nanoscience and Technology, Sri Ramakrishna Engineering College, Coimbatore 641022, India
| | | | - R R Deshmukh
- Department of Physics, Institute of Chemical Technology, Matunga, Mumbai 400019, India
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23
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Narimisa M, Onyshchenko Y, Morent R, De Geyter N. Improvement of PET surface modification using an atmospheric pressure plasma jet with different shielding gases. POLYMER 2021. [DOI: 10.1016/j.polymer.2021.123421] [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: 10/22/2022]
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24
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Esbah Tabaei PS, Asadian M, Ghobeira R, Cools P, Thukkaram M, Derakhshandeh PG, Abednatanzi S, Van Der Voort P, Verbeken K, Vercruysse C, Declercq H, Morent R, De Geyter N. Combinatorial effects of coral addition and plasma treatment on the properties of chitosan/polyethylene oxide nanofibers intended for bone tissue engineering. Carbohydr Polym 2021; 253:117211. [DOI: 10.1016/j.carbpol.2020.117211] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2020] [Revised: 09/21/2020] [Accepted: 10/06/2020] [Indexed: 12/27/2022]
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25
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Kaliya Perumal Veerapandian S, Giraudon JM, De Geyter N, Onyshchenko Y, Krishnaraj C, Sonar S, Löfberg A, Leus K, Van Der Voort P, Lamonier JF, Morent R. Regeneration of Hopcalite used for the adsorption plasma catalytic removal of toluene by non-thermal plasma. J Hazard Mater 2021; 402:123877. [PMID: 33254820 DOI: 10.1016/j.jhazmat.2020.123877] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/21/2020] [Revised: 08/26/2020] [Accepted: 08/26/2020] [Indexed: 06/12/2023]
Abstract
A dielectric barrier discharge reactor packed with both Hopcalite & glass beads has been investigated for the total oxidation of toluene adsorbed on Hopcalite. The catalytic activity and selectivity through the possible formation of by-products during the NTP discharge for the abatement of irreversibly adsorbed toluene have been investigated by FT-IR and mass spectrometer. The regeneration of the used Hopcalite by NTP discharge has been established by (i) determining the amount of toluene adsorbed on NTP regenerated Hopcalite, (ii) investigating the catalytic activity of NTP regenerated Hopcalite and (iii) comparing the bulk and surface properties of the fresh calcined and NTP regenerated Hopcalite. The ratio of amount of irreversibly adsorbed toluene to that of the total amount of adsorbed toluene adsorbed is similar for the fresh calcined and NTP (I) regenerated Hopcalite. The catalytic activity of the NTP (I) regenerated Hopcalite is slightly enhanced when compared to that of the fresh calcined Hopcalite. Although the first NTP treatment induces partial transformation of Hopcalite into Mn3O4 with no detected related CuOx and reduces specific surface area by a factor of 2, the toluene adsorption capacity remains less affected. A plausible reaction scheme for toluene decomposition in Hopcalite PBDBD reactor is proposed.
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Affiliation(s)
- Savita Kaliya Perumal Veerapandian
- Ghent University, Faculty of Engineering and Architecture, Department of Applied Physics, Research Unit Plasma Technology, Sint-Pietersnieuwstraat 41 B4, 9000 Ghent, Belgium.
| | - Jean-Marc Giraudon
- Univ. Lille, CNRS, Centrale Lille, Univ. Artois, UMR 8181 - UCCS - Unité de Catalyse et Chimie du Solide, F-59000 Lille, France
| | - Nathalie De Geyter
- Ghent University, Faculty of Engineering and Architecture, Department of Applied Physics, Research Unit Plasma Technology, Sint-Pietersnieuwstraat 41 B4, 9000 Ghent, Belgium
| | - Yuliia Onyshchenko
- Ghent University, Faculty of Engineering and Architecture, Department of Applied Physics, Research Unit Plasma Technology, Sint-Pietersnieuwstraat 41 B4, 9000 Ghent, Belgium
| | - Chidharth Krishnaraj
- Ghent University, Department of Chemistry, COMOC-Center for Ordered Materials, Organometallics and Catalysis, Krijgslaan 281-S3, 9000 Ghent, Belgium
| | - Shilpa Sonar
- Ghent University, Faculty of Engineering and Architecture, Department of Applied Physics, Research Unit Plasma Technology, Sint-Pietersnieuwstraat 41 B4, 9000 Ghent, Belgium; Univ. Lille, CNRS, Centrale Lille, Univ. Artois, UMR 8181 - UCCS - Unité de Catalyse et Chimie du Solide, F-59000 Lille, France
| | - Axel Löfberg
- Univ. Lille, CNRS, Centrale Lille, Univ. Artois, UMR 8181 - UCCS - Unité de Catalyse et Chimie du Solide, F-59000 Lille, France
| | - Karen Leus
- Ghent University, Department of Chemistry, COMOC-Center for Ordered Materials, Organometallics and Catalysis, Krijgslaan 281-S3, 9000 Ghent, Belgium
| | - Pascal Van Der Voort
- Ghent University, Department of Chemistry, COMOC-Center for Ordered Materials, Organometallics and Catalysis, Krijgslaan 281-S3, 9000 Ghent, Belgium
| | - Jean-François Lamonier
- Univ. Lille, CNRS, Centrale Lille, Univ. Artois, UMR 8181 - UCCS - Unité de Catalyse et Chimie du Solide, F-59000 Lille, France
| | - Rino Morent
- Ghent University, Faculty of Engineering and Architecture, Department of Applied Physics, Research Unit Plasma Technology, Sint-Pietersnieuwstraat 41 B4, 9000 Ghent, Belgium
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26
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Chang T, Chen Q, Fan H, Shen Z, Zhang B, Huang Y, Veerapandian SKP, De Geyter N, Morent R. Removal mechanism and quantitative control of trichloroethylene in a post-plasma-catalytic system over Mn–Ce/HZSM-5 catalysts. Catal Sci Technol 2021. [DOI: 10.1039/d1cy00141h] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The optimization of the TCE degradation process was achieved and the TCE degradation pathway in the PPC system was proposed.
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Affiliation(s)
- Tian Chang
- School of Environmental Science and Engineering
- Shaanxi University of Science & Technology
- Xi'an 710021
- China
- Department of Environmental Science and Engineering
| | - Qingcai Chen
- School of Environmental Science and Engineering
- Shaanxi University of Science & Technology
- Xi'an 710021
- China
| | - Hao Fan
- Department of Environmental Science and Engineering
- Xi'an Jiaotong University
- Xi'an 710049
- China
| | - Zhenxing Shen
- Department of Environmental Science and Engineering
- Xi'an Jiaotong University
- Xi'an 710049
- China
| | - Bin Zhang
- Department of Environmental Science and Engineering
- Xi'an Jiaotong University
- Xi'an 710049
- China
| | - Yu Huang
- Key Lab of Aerosol Chemistry & Physics
- SKLLQG
- Institute of Earth Environment
- Chinese Academy of Sciences
- Xi'an 710049
| | - Savita K. P. Veerapandian
- Research Unit Plasma Technology
- Department of Applied Physics
- Faculty of Engineering and Architecture
- Ghent University
- 9000 Ghent
| | - Nathalie De Geyter
- Research Unit Plasma Technology
- Department of Applied Physics
- Faculty of Engineering and Architecture
- Ghent University
- 9000 Ghent
| | - Rino Morent
- Research Unit Plasma Technology
- Department of Applied Physics
- Faculty of Engineering and Architecture
- Ghent University
- 9000 Ghent
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27
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Vanden Bussche F, Kaczmarek AM, Veerapandian SKP, Everaert J, Debruyne M, Abednatanzi S, Morent R, De Geyter N, Van Speybroeck V, Van Der Voort P, Stevens CV. N-Rich Porous Polymer with Isolated Tb 3+ -Ions Displays Unique Temperature Dependent Behavior through the Absence of Thermal Quenching. Chemistry 2020; 26:15596-15604. [PMID: 32519784 DOI: 10.1002/chem.202002009] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [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: 04/24/2020] [Revised: 05/29/2020] [Indexed: 11/06/2022]
Abstract
The challenge of measuring fast moving or small scale samples is based on the absence of contact between sample and sensor. Grafting lanthanides onto hybrid materials arises as one of the most promising accurate techniques to obtain noninvasive thermometers. In this work, a novel bipyridine based porous organic polymer (bpyDAT POP) was investigated as temperature sensor after grafting with Eu(acac)3 and Tb(acac)3 complexes. The bpyDAT POP successfully showed temperature-dependent behavior in the 10-310 K range, proving the potential of amorphous, porous organic frameworks. We observed unique temperature dependent behavior. More intriguingly, instead of the standard observed change in emission as a result of a change in temperature for both Eu3+ and Tb3+ , the emission spectrum of Tb3+ remained constant. This work provides framework- and energy-based explanations for the observed phenomenon. The conjugation in the bpyDAT POP framework is interrupted, creating energetically isolated Tb3+ environments. Energy transfer from Tb3+ to Eu3+ is therefore absent, nor energy back transfer from Tb3+ to bpyDAT POP ligand (i.e. no thermal quenching) is detected.
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Affiliation(s)
- Flore Vanden Bussche
- Ghent University, Krijgslaan 281 (S3), 9000, Ghent, Belgium.,Department of Green Chemistry and Technology, Ghent University, Campus Coupure, Coupure Links 653, 9000, Ghent, Belgium
| | | | - Savita K P Veerapandian
- Department of Applied Physics, Ghent University, Sint-Pietersnieuwstraat 41 (B4), 9000, Ghent, Belgium
| | - Jonas Everaert
- Department of Green Chemistry and Technology, Ghent University, Campus Coupure, Coupure Links 653, 9000, Ghent, Belgium
| | - Maarten Debruyne
- Department of Green Chemistry and Technology, Ghent University, Campus Coupure, Coupure Links 653, 9000, Ghent, Belgium
| | | | - Rino Morent
- Department of Applied Physics, Ghent University, Sint-Pietersnieuwstraat 41 (B4), 9000, Ghent, Belgium
| | - Nathalie De Geyter
- Department of Applied Physics, Ghent University, Sint-Pietersnieuwstraat 41 (B4), 9000, Ghent, Belgium
| | - Veronique Van Speybroeck
- Center for Molecular Modeling (CMM), Ghent University, Technologiepark 46, 9052, Zwijnaarde, Belgium
| | | | - Christian V Stevens
- Department of Green Chemistry and Technology, Ghent University, Campus Coupure, Coupure Links 653, 9000, Ghent, Belgium
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28
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Astoreca L, Cools P, Schaubroeck D, Asadian M, Aliakbarshirazi S, Declercq H, Op de Beeck M, Morent R, De Smet H, De Geyter N. Non-thermal plasma activation of BPDA-PPD polyimide for improved cell-material interaction. POLYMER 2020. [DOI: 10.1016/j.polymer.2020.122831] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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29
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Thukkaram M, Coryn R, Asadian M, Esbah Tabaei PS, Rigole P, Rajendhran N, Nikiforov A, Sukumaran J, Coenye T, Van Der Voort P, Du Laing G, Morent R, Van Tongel A, De Wilde L, De Baets P, Verbeken K, De Geyter N. Fabrication of Microporous Coatings on Titanium Implants with Improved Mechanical, Antibacterial, and Cell-Interactive Properties. ACS Appl Mater Interfaces 2020; 12:30155-30169. [PMID: 32530601 DOI: 10.1021/acsami.0c07234] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
The success of an orthopedic implant therapy depends on successful bone integration and the prevention of microbial infections. In this work, plasma electrolytic oxidation (PEO) was performed to deposit TiO2 coatings enriched with Ca, P, and Ag on titanium to improve its surface properties and antibacterial efficacy while maintaining normal biological functions and thus to enhance the performance of orthopedic implants. After PEO treatment, the surface of Ti was converted to anatase and rutile TiO2, hydroxyapatite, and calcium titanate phases. The presence of these crystalline phases was further increased with an increased Ag content in the coatings. The developed coatings also exhibited a more porous morphology with an improved surface wettability, roughness, microhardness, and frictional coefficient. In vitro antibacterial assays indicated that the Ag-doped coatings can significantly prevent the growth of both Staphylococcus aureus and Escherichia coli by releasing Ag+ ions, and the ability to prevent these bacteria was enhanced by increasing the Ag content in the coatings, resulting in a maximal 6-log reduction of E. coli and a maximal 5-log reduction of S. aureus after 24 h of incubation. Moreover, the in vitro cytocompatibility evaluation of the coatings showed that the osteoblast (MC3T3) cell integration on the PEO-based coatings was greatly improved compared to untreated Ti and no notable impact on their cytocompatibility was observed on increasing the amount of Ag in the coating. In conclusion, the coating with favorable physicochemical and mechanical properties along with controlled silver ion release can offer an excellent antibacterial performance and osteocompatibility and can thus become a prospective coating strategy to face current challenges in orthopedics.
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Affiliation(s)
- Monica Thukkaram
- Research Unit Plasma Technology (RUPT), Department of Applied Physics, Faculty of Engineering and Architecture, Ghent University, Ghent 9000, Belgium
| | - Renee Coryn
- Research Unit Plasma Technology (RUPT), Department of Applied Physics, Faculty of Engineering and Architecture, Ghent University, Ghent 9000, Belgium
| | - Mahtab Asadian
- Research Unit Plasma Technology (RUPT), Department of Applied Physics, Faculty of Engineering and Architecture, Ghent University, Ghent 9000, Belgium
| | - Parinaz Saadat Esbah Tabaei
- Research Unit Plasma Technology (RUPT), Department of Applied Physics, Faculty of Engineering and Architecture, Ghent University, Ghent 9000, Belgium
| | - Petra Rigole
- Laboratory of Pharmaceutical Microbiology, Faculty of Pharmaceutical Sciences, Ghent University, Ghent 9000, Belgium
| | - Naveenkumar Rajendhran
- Soete Laboratory, Department of Electrical Energy, Metals, Mechanical Construction and Systems (EEMMeCS), Faculty of Engineering and Architecture, Ghent University, Ghent 9000, Belgium
| | - Anton Nikiforov
- Research Unit Plasma Technology (RUPT), Department of Applied Physics, Faculty of Engineering and Architecture, Ghent University, Ghent 9000, Belgium
| | - Jacob Sukumaran
- Soete Laboratory, Department of Electrical Energy, Metals, Mechanical Construction and Systems (EEMMeCS), Faculty of Engineering and Architecture, Ghent University, Ghent 9000, Belgium
| | - Tom Coenye
- Laboratory of Pharmaceutical Microbiology, Faculty of Pharmaceutical Sciences, Ghent University, Ghent 9000, Belgium
| | - Pascal Van Der Voort
- Centre for Ordered Materials, Organometallics and Catalysis (COMOC), Department of Chemistry, Faculty of Sciences, Ghent University, Ghent 9000, Belgium
| | - Gijs Du Laing
- Department of Green Chemistry and Technology, Faculty of Bioscience Engineering, Ghent University, Ghent 9000, Belgium
| | - Rino Morent
- Research Unit Plasma Technology (RUPT), Department of Applied Physics, Faculty of Engineering and Architecture, Ghent University, Ghent 9000, Belgium
| | - Alexander Van Tongel
- Orthopedic Surgery and Traumatology, Department of Human Structure and Repair, Faculty of Medicine and Health Sciences, Ghent University, Ghent 9000, Belgium
| | - Lieven De Wilde
- Orthopedic Surgery and Traumatology, Department of Human Structure and Repair, Faculty of Medicine and Health Sciences, Ghent University, Ghent 9000, Belgium
| | - Patrick De Baets
- Soete Laboratory, Department of Electrical Energy, Metals, Mechanical Construction and Systems (EEMMeCS), Faculty of Engineering and Architecture, Ghent University, Ghent 9000, Belgium
| | - Kim Verbeken
- Department of Materials, Textiles and Chemical Engineering, Faculty of Engineering and Architecture, Ghent University, Ghent 9000, Belgium
| | - Nathalie De Geyter
- Research Unit Plasma Technology (RUPT), Department of Applied Physics, Faculty of Engineering and Architecture, Ghent University, Ghent 9000, Belgium
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30
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Thukkaram M, Vaidulych M, Kylián O, Hanuš J, Rigole P, Aliakbarshirazi S, Asadian M, Nikiforov A, Van Tongel A, Biederman H, Coenye T, Du Laing G, Morent R, De Wilde L, Verbeken K, De Geyter N. Investigation of Ag/a-C:H Nanocomposite Coatings on Titanium for Orthopedic Applications. ACS Appl Mater Interfaces 2020; 12:23655-23666. [PMID: 32374146 DOI: 10.1021/acsami.9b23237] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
One of the leading causes of failure for any bone implant is implant-associated infections. The implant-bone interface is in fact the crucial site of infection where both the microorganisms and cells compete to populate the newly introduced implant surface. Most of the work dealing with this issue has focused on the design of implant coatings capable of preventing infection while ignoring cell proliferation or vice versa. The present study is therefore focused on investigating the antibacterial and biological properties of nanocomposite coatings based on an amorphous hydrocarbon (a-C:H) matrix containing silver nanoparticles (AgNPs). a-C:H coatings with varying silver concentrations were generated directly on medical grade titanium substrates using a combination of a gas aggregation source (GAS) and a plasma-enhanced chemical vapor deposition (PE-CVD) process. The obtained results revealed that the surface silver content increased from 1.3 at % to 5.3 at % by increasing the used DC magnetron current in the GAS from 200 to 500 mA. The in vitro antibacterial assays revealed that the nanocomposites with the highest number of silver content exhibited excellent antibacterial activities resulting in a 6-log reduction of Escherichia coli and a 4-log reduction of Staphylococcus aureus after 24 h of incubation. An MTT assay, fluorescence live/dead staining, and SEM microscopy observations of MC3T3 cells seeded on the uncoated and coated Ti substrates also showed that increasing the amount of AgNPs in the nanocomposites had no notable impact on their cytocompatibility, while improved cell proliferation was especially observed for the nanocomposites possessing a low amount of AgNPs. These controllable Ag/a-C:H nanocomposites on Ti substrates, which simultaneously provide an excellent antibacterial performance and good biocompatibility, could thus have promising applications in orthopedics and other biomedical implants.
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Affiliation(s)
- Monica Thukkaram
- Research Unit Plasma Technology (RUPT), Department of Applied Physics, Faculty of Engineering & Architecture, Ghent University, Ghent 9000, Belgium
| | - Mykhailo Vaidulych
- Department of Macromolecular Physics, Faculty of Mathematics and Physics, Charles University, Prague 116 36, Czech Republic
| | - Ondřej Kylián
- Department of Macromolecular Physics, Faculty of Mathematics and Physics, Charles University, Prague 116 36, Czech Republic
| | - Jan Hanuš
- Department of Macromolecular Physics, Faculty of Mathematics and Physics, Charles University, Prague 116 36, Czech Republic
| | - Petra Rigole
- Laboratory of Pharmaceutical Microbiology, Faculty of Pharmaceutical Sciences, Ghent University, Ghent 9000, Belgium
| | - Sheida Aliakbarshirazi
- Research Unit Plasma Technology (RUPT), Department of Applied Physics, Faculty of Engineering & Architecture, Ghent University, Ghent 9000, Belgium
| | - Mahtab Asadian
- Research Unit Plasma Technology (RUPT), Department of Applied Physics, Faculty of Engineering & Architecture, Ghent University, Ghent 9000, Belgium
| | - Anton Nikiforov
- Research Unit Plasma Technology (RUPT), Department of Applied Physics, Faculty of Engineering & Architecture, Ghent University, Ghent 9000, Belgium
| | - Alexander Van Tongel
- Orthopaedic Surgery and Traumatology, Department of Human Structure and Repair, Faculty of Medicine and Health Sciences, Ghent University, Ghent 9000, Belgium
| | - Hynek Biederman
- Department of Macromolecular Physics, Faculty of Mathematics and Physics, Charles University, Prague 116 36, Czech Republic
| | - Tom Coenye
- Laboratory of Pharmaceutical Microbiology, Faculty of Pharmaceutical Sciences, Ghent University, Ghent 9000, Belgium
| | - Gijs Du Laing
- Department of Green Chemistry and Technology, Faculty of Bioscience Engineering, Ghent University, Ghent 9000, Belgium
| | - Rino Morent
- Research Unit Plasma Technology (RUPT), Department of Applied Physics, Faculty of Engineering & Architecture, Ghent University, Ghent 9000, Belgium
| | - Lieven De Wilde
- Orthopaedic Surgery and Traumatology, Department of Human Structure and Repair, Faculty of Medicine and Health Sciences, Ghent University, Ghent 9000, Belgium
| | - Kim Verbeken
- Department of Materials, Textiles, and Chemical Engineering, Faculty of Engineering & Architecture, Ghent University, Ghent 9000, Belgium
| | - Nathalie De Geyter
- Research Unit Plasma Technology (RUPT), Department of Applied Physics, Faculty of Engineering & Architecture, Ghent University, Ghent 9000, Belgium
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Esbah Tabaei PS, Ghobeira R, Cools P, Rezaei F, Nikiforov A, Morent R, De Geyter N. Comparative study between in-plasma and post-plasma chemical processes occurring at the surface of UHMWPE subjected to medium pressure Ar and N2 plasma activation. POLYMER 2020. [DOI: 10.1016/j.polymer.2020.122383] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Feng X, Hajek J, Jena HS, Wang G, Veerapandian SKP, Morent R, De Geyter N, Leyssens K, Hoffman AEJ, Meynen V, Marquez C, De Vos DE, Van Speybroeck V, Leus K, Van Der Voort P. Engineering a Highly Defective Stable UiO-66 with Tunable Lewis- Brønsted Acidity: The Role of the Hemilabile Linker. J Am Chem Soc 2020; 142:3174-3183. [PMID: 31971786 PMCID: PMC7020139 DOI: 10.1021/jacs.9b13070] [Citation(s) in RCA: 97] [Impact Index Per Article: 24.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
The stability of metal-organic frameworks (MOFs) typically decreases with an increasing number of defects, limiting the number of defects that can be created and limiting catalytic and other applications. Herein, we use a hemilabile (Hl) linker to create up to a maximum of six defects per cluster in UiO-66. We synthesized hemilabile UiO-66 (Hl-UiO-66) using benzene dicarboxylate (BDC) as linker and 4-sulfonatobenzoate (PSBA) as the hemilabile linker. The PSBA acts not only as a modulator to create defects but also as a coligand that enhances the stability of the resulting defective framework. Furthermore, upon a postsynthetic treatment in H2SO4, the average number of defects increases to the optimum of six missing BDC linkers per cluster (three per formula unit), leaving the Zr-nodes on average sixfold coordinated. Remarkably, the thermal stability of the materials further increases upon this treatment. Periodic density functional theory calculations confirm that the hemilabile ligands strengthen this highly defective structure by several stabilizing interactions. Finally, the catalytic activity of the obtained materials is evaluated in the acid-catalyzed isomerization of α-pinene oxide. This reaction is particularly sensitive to the Brønsted or Lewis acid sites in the catalyst. In comparison to the pristine UiO-66, which mainly possesses Brønsted acid sites, the Hl-UiO-66 and the postsynthetically treated Hl-UiO-66 structures exhibited a higher Lewis acidity and an enhanced activity and selectivity. This is further explored by CD3CN spectroscopic sorption experiments. We have shown that by tuning the number of defects in UiO-66 using PSBA as the hemilabile linker, one can achieve highly defective and stable MOFs and easily control the Brønsted to Lewis acid ratio in the materials and thus their catalytic activity and selectivity.
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Affiliation(s)
- Xiao Feng
- Department of Chemistry, Center for Ordered Materials, Organometallics and Catalysis (COMOC) , Ghent University , 281 Krijgslaan (S3) , B-9000 Ghent , Belgium
| | - Julianna Hajek
- Center for Molecular Modeling , Ghent University , Tech Lane Ghent Science Park Campus A, Technologiepark 46 , 9052 Zwijnaarde , Belgium
| | - Himanshu Sekhar Jena
- Department of Chemistry, Center for Ordered Materials, Organometallics and Catalysis (COMOC) , Ghent University , 281 Krijgslaan (S3) , B-9000 Ghent , Belgium
| | - Guangbo Wang
- Department of Chemistry, Center for Ordered Materials, Organometallics and Catalysis (COMOC) , Ghent University , 281 Krijgslaan (S3) , B-9000 Ghent , Belgium.,College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Key Laboratory of Molecular and Nano Probes, Ministry of Education , Shandong Normal University , Jinan 250014 , P.R. China
| | - Savita K P Veerapandian
- Research Unit Plasma Technology (RUPT), Department of Applied Physics, Faculty of Engineering and Architecture , Ghent University , St-Pietersnieuwstraat 41 B4 , 9000 Ghent , Belgium
| | - Rino Morent
- Research Unit Plasma Technology (RUPT), Department of Applied Physics, Faculty of Engineering and Architecture , Ghent University , St-Pietersnieuwstraat 41 B4 , 9000 Ghent , Belgium
| | - Nathalie De Geyter
- Research Unit Plasma Technology (RUPT), Department of Applied Physics, Faculty of Engineering and Architecture , Ghent University , St-Pietersnieuwstraat 41 B4 , 9000 Ghent , Belgium
| | - Karen Leyssens
- Department of Chemistry, Lab of Adsorption & Catalysis LADCA , University of Antwerp , Universiteitsplein 1 , B-2610 Antwerp , Belgium
| | - Alexander E J Hoffman
- Center for Molecular Modeling , Ghent University , Tech Lane Ghent Science Park Campus A, Technologiepark 46 , 9052 Zwijnaarde , Belgium
| | - Vera Meynen
- Department of Chemistry, Lab of Adsorption & Catalysis LADCA , University of Antwerp , Universiteitsplein 1 , B-2610 Antwerp , Belgium
| | - Carlos Marquez
- Ctr Membrane Separation, Adsorption, Catalysis & Spectroscopy for Sustainable Chemistry , Katholieke University Leuven , Celestijnenlaan 200F Box 2454, B-3000 Leuven , Belgium
| | - Dirk E De Vos
- Ctr Membrane Separation, Adsorption, Catalysis & Spectroscopy for Sustainable Chemistry , Katholieke University Leuven , Celestijnenlaan 200F Box 2454, B-3000 Leuven , Belgium
| | - Veronique Van Speybroeck
- Center for Molecular Modeling , Ghent University , Tech Lane Ghent Science Park Campus A, Technologiepark 46 , 9052 Zwijnaarde , Belgium
| | - Karen Leus
- Department of Chemistry, Center for Ordered Materials, Organometallics and Catalysis (COMOC) , Ghent University , 281 Krijgslaan (S3) , B-9000 Ghent , Belgium
| | - Pascal Van Der Voort
- Department of Chemistry, Center for Ordered Materials, Organometallics and Catalysis (COMOC) , Ghent University , 281 Krijgslaan (S3) , B-9000 Ghent , Belgium
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Egghe T, Cools P, Van Guyse JFR, Asadian M, Khalenkow D, Nikiforov A, Declercq H, Skirtach AG, Morent R, Hoogenboom R, De Geyter N. Water-Stable Plasma-Polymerized N, N-Dimethylacrylamide Coatings to Control Cellular Adhesion. ACS Appl Mater Interfaces 2020; 12:2116-2128. [PMID: 31834769 DOI: 10.1021/acsami.9b19526] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
The plasma polymerization of amide-based precursors is a nearly unexplored research area, which is in contrast with the abundance of reports focusing on amide-based surface modification using wet chemistry. Therefore, this study aims to profoundly investigate the near-atmospheric pressure plasma polymerization of N,N-dimethylacrylamide (DMAM) to obtain stable coatings. In contrast to the unstable coatings obtained at lower discharge powers, the stable coatings that were obtained at higher powers showed a lower hydrophilicity as assessed by water contact angle (WCA). This decrease in hydrophilicity with increasing plasma power was found to be related to a reduced preservation of the monomer structure, as observed by Fourier transform infrared (FTIR), Raman spectroscopy, X-ray photoelectron spectroscopy (XPS), and XPS C60 depth profiling, a rarely used but effective combination of techniques. Furthermore, the chemical composition of the coating was found to be in good agreement with the plasma active species observed by optical emission spectroscopy. Additionally, XPS C60 depth profiling indicated a difference between the top layer and bulk of the plasma polymer due to spontaneous oxidation and/or postplasma coating deposition. Finally, the stable coatings were also found to have cell-interactive behavior toward MC3T3 as studied by in vitro live/dead fluorescence imaging and (3-(4,5-dimethylthiazol-2-yl)-5-(3-carboxymethoxyphenyl)-2-(4-sulfophenyl)-2H-tetrazolium) (MTS) assays. With the latter technique, a cell viability of up to 89% as compared with tissue culture plates after 1 day of cell culture was observed, indicating the potential of these coatings for tissue engineering purposes.
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Affiliation(s)
- Tim Egghe
- Research Unit Plasma Technology (RUPT), Department of Applied Physics, Faculty of Engineering and Architecture , Ghent University , Sint-Pietersnieuwstraat 41 B4 , 9000 Ghent , Belgium
- Supramolecular Chemistry Group, Centre of Macromolecular Chemistry (CMaC) Department of Organic and Macromolecular Chemistry, Faculty of Sciences , Ghent University , Krijgslaan 281 S4 , 9000 Ghent , Belgium
| | - Pieter Cools
- Research Unit Plasma Technology (RUPT), Department of Applied Physics, Faculty of Engineering and Architecture , Ghent University , Sint-Pietersnieuwstraat 41 B4 , 9000 Ghent , Belgium
| | - Joachim F R Van Guyse
- Supramolecular Chemistry Group, Centre of Macromolecular Chemistry (CMaC) Department of Organic and Macromolecular Chemistry, Faculty of Sciences , Ghent University , Krijgslaan 281 S4 , 9000 Ghent , Belgium
| | - Mahtab Asadian
- Research Unit Plasma Technology (RUPT), Department of Applied Physics, Faculty of Engineering and Architecture , Ghent University , Sint-Pietersnieuwstraat 41 B4 , 9000 Ghent , Belgium
| | - Dmitry Khalenkow
- Department of Biotechnology, Faculty of Bioscience Engineering , Ghent University , Coupure Links 653 B , 9000 Ghent , Belgium
| | - Anton Nikiforov
- Research Unit Plasma Technology (RUPT), Department of Applied Physics, Faculty of Engineering and Architecture , Ghent University , Sint-Pietersnieuwstraat 41 B4 , 9000 Ghent , Belgium
| | - Heidi Declercq
- Tissue Engineering Group, Department of Human Structure and Repair, Faculty of Medicine and Health Sciences , Ghent University , Corneel Heymanslaan 10 B3 , 9000 Ghent , Belgium
| | - Andre G Skirtach
- Department of Biotechnology, Faculty of Bioscience Engineering , Ghent University , Coupure Links 653 B , 9000 Ghent , Belgium
| | - Rino Morent
- Research Unit Plasma Technology (RUPT), Department of Applied Physics, Faculty of Engineering and Architecture , Ghent University , Sint-Pietersnieuwstraat 41 B4 , 9000 Ghent , Belgium
| | - Richard Hoogenboom
- Supramolecular Chemistry Group, Centre of Macromolecular Chemistry (CMaC) Department of Organic and Macromolecular Chemistry, Faculty of Sciences , Ghent University , Krijgslaan 281 S4 , 9000 Ghent , Belgium
| | - Nathalie De Geyter
- Research Unit Plasma Technology (RUPT), Department of Applied Physics, Faculty of Engineering and Architecture , Ghent University , Sint-Pietersnieuwstraat 41 B4 , 9000 Ghent , Belgium
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Grande S, Van Guyse J, Nikiforov AY, Onyshchenko I, Asadian M, Morent R, Hoogenboom R, De Geyter N. Aging effect of atmospheric pressure plasma jet treated polycaprolactone polymer solutions on electrospinning properties. J Appl Polym Sci 2020. [DOI: 10.1002/app.48914] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Silvia Grande
- Research Unit Plasma Technology (RUPT), Department of Applied Physics, Faculty of Engineering and ArchitectureGhent University Sint‐Pietersnieuwstraat 41 B4 9000 Ghent Belgium
| | - Joachim Van Guyse
- Department of Organic and Macromolecular Chemistry, Supramolecular Chemistry Group, Centre of Macromolecular Chemistry (CMaC), Faculty of SciencesGhent University Krijgslaan 281 S4 9000 Ghent Belgium
| | - Anton Y. Nikiforov
- Research Unit Plasma Technology (RUPT), Department of Applied Physics, Faculty of Engineering and ArchitectureGhent University Sint‐Pietersnieuwstraat 41 B4 9000 Ghent Belgium
| | - Iuliia Onyshchenko
- Research Unit Plasma Technology (RUPT), Department of Applied Physics, Faculty of Engineering and ArchitectureGhent University Sint‐Pietersnieuwstraat 41 B4 9000 Ghent Belgium
| | - Mahtab Asadian
- Research Unit Plasma Technology (RUPT), Department of Applied Physics, Faculty of Engineering and ArchitectureGhent University Sint‐Pietersnieuwstraat 41 B4 9000 Ghent Belgium
| | - Rino Morent
- Research Unit Plasma Technology (RUPT), Department of Applied Physics, Faculty of Engineering and ArchitectureGhent University Sint‐Pietersnieuwstraat 41 B4 9000 Ghent Belgium
| | - Richard Hoogenboom
- Department of Organic and Macromolecular Chemistry, Supramolecular Chemistry Group, Centre of Macromolecular Chemistry (CMaC), Faculty of SciencesGhent University Krijgslaan 281 S4 9000 Ghent Belgium
| | - Nathalie De Geyter
- Research Unit Plasma Technology (RUPT), Department of Applied Physics, Faculty of Engineering and ArchitectureGhent University Sint‐Pietersnieuwstraat 41 B4 9000 Ghent Belgium
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Asadian M, Chan KV, Norouzi M, Grande S, Cools P, Morent R, De Geyter N. Fabrication and Plasma Modification of Nanofibrous Tissue Engineering Scaffolds. Nanomaterials (Basel) 2020; 10:E119. [PMID: 31936372 PMCID: PMC7023287 DOI: 10.3390/nano10010119] [Citation(s) in RCA: 45] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/21/2019] [Revised: 12/13/2019] [Accepted: 12/21/2019] [Indexed: 12/15/2022]
Abstract
This paper provides a comprehensive overview of nanofibrous structures for tissue engineering purposes and the role of non-thermal plasma technology (NTP) within this field. Special attention is first given to nanofiber fabrication strategies, including thermally-induced phase separation, molecular self-assembly, and electrospinning, highlighting their strengths, weaknesses, and potentials. The review then continues to discuss the biodegradable polyesters typically employed for nanofiber fabrication, while the primary focus lies on their applicability and limitations. From thereon, the reader is introduced to the concept of NTP and its application in plasma-assisted surface modification of nanofibrous scaffolds. The final part of the review discusses the available literature on NTP-modified nanofibers looking at the impact of plasma activation and polymerization treatments on nanofiber wettability, surface chemistry, cell adhesion/proliferation and protein grafting. As such, this review provides a complete introduction into NTP-modified nanofibers, while aiming to address the current unexplored potentials left within the field.
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Affiliation(s)
- Mahtab Asadian
- Research Unit Plasma Technology (RUPT), Department of Applied Physics, Ghent University, Sint-Pietersnieuwstraat 41, B4, B-9000 Ghent, Belgium; (K.V.C.); (S.G.); (P.C.); (R.M.); (N.D.G.)
| | - Ke Vin Chan
- Research Unit Plasma Technology (RUPT), Department of Applied Physics, Ghent University, Sint-Pietersnieuwstraat 41, B4, B-9000 Ghent, Belgium; (K.V.C.); (S.G.); (P.C.); (R.M.); (N.D.G.)
| | - Mohammad Norouzi
- Department of Biomedical Engineering, University of Manitoba, Winnipeg, MB R3E 0Z3, Canada;
| | - Silvia Grande
- Research Unit Plasma Technology (RUPT), Department of Applied Physics, Ghent University, Sint-Pietersnieuwstraat 41, B4, B-9000 Ghent, Belgium; (K.V.C.); (S.G.); (P.C.); (R.M.); (N.D.G.)
| | - Pieter Cools
- Research Unit Plasma Technology (RUPT), Department of Applied Physics, Ghent University, Sint-Pietersnieuwstraat 41, B4, B-9000 Ghent, Belgium; (K.V.C.); (S.G.); (P.C.); (R.M.); (N.D.G.)
| | - Rino Morent
- Research Unit Plasma Technology (RUPT), Department of Applied Physics, Ghent University, Sint-Pietersnieuwstraat 41, B4, B-9000 Ghent, Belgium; (K.V.C.); (S.G.); (P.C.); (R.M.); (N.D.G.)
| | - Nathalie De Geyter
- Research Unit Plasma Technology (RUPT), Department of Applied Physics, Ghent University, Sint-Pietersnieuwstraat 41, B4, B-9000 Ghent, Belgium; (K.V.C.); (S.G.); (P.C.); (R.M.); (N.D.G.)
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Wang G, Onyshchenko Y, De Geyter N, Morent R, Leus K, Van Der Voort P. Straightforward preparation of fluorinated covalent triazine frameworks with significantly enhanced carbon dioxide and hydrogen adsorption capacities. Dalton Trans 2019; 48:17612-17619. [PMID: 31755487 DOI: 10.1039/c9dt03701b] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
The development of advanced functional porous materials for efficient carbon capture and separation is of prime importance with respect to energy and environmental sustainability and employing covalent triazine frameworks as the adsorbents for carbon capture is deemed to be one of the most promising means to alleviate this issue. Herein, we report the construction of a set of partially fluorinated microporous covalent triazine frameworks (FCTFs) with appropriate CO2-philic functionalities (N and F) and high porosities (up to 2060 m2 g-1) for effective gas adsorption and separation. Markedly, the CO2 adsorption capacity of the FCTF materials prepared at a ZnCl2/monomer ratio of 20 and 400 °C reaches up to 4.70 mmol g-1 at 273 K and 1 bar, which is among the top level of all the reported CTFs. In addition, the studied FCTFs also exhibit a significantly high H2 uptake of 1.88 wt% at 77 K and 1 bar, outperforming most of the reported CTF materials under identical conditions. Apart from this, the obtained FCTF materials also display moderate CO2 selectivities over N2 (28) and CH4 (5.6) at room temperature.
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Affiliation(s)
- Guangbo Wang
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Shandong Normal University, Jinan 250014, P. R. China.
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Veerapandian SKP, Ye Z, Giraudon JM, De Geyter N, Morent R, Lamonier JF. Plasma assisted Cu-Mn mixed oxide catalysts for trichloroethylene abatement in moist air. J Hazard Mater 2019; 379:120781. [PMID: 31238213 DOI: 10.1016/j.jhazmat.2019.120781] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/19/2019] [Revised: 06/13/2019] [Accepted: 06/14/2019] [Indexed: 06/09/2023]
Abstract
The removal of dilute trichloroethylene (TCE) in moist air by post-plasma catalysis (PPC) using Cu-Mn mixed oxides heated at 150 °C was investigated. Cu-Mn mixed oxides were prepared by redox- and co-precipitation method. In comparison to the catalytic oxidation and non-thermal plasma (NTP) process, PPC was found to be the best process to convert TCE into CO2, in particular when Cu-Mn oxide was synthetized by redox precipitation method. The highest TCE conversion efficiency of more than 80% was obtained at the energy density of 60 J.L-1 using the catalyst prepared by redox-precipitation process in PPC configuration. The performance of Cu-Mn oxide prepared by redox-precipitation method did not show increase in TCE conversion with energy density which is attributed to the changes on the catalyst surface (such as reduction in SBET, chlorine poisoning and Mn enrichment). Although, Cu-Mn oxide prepared by co-precipitation method showed a lower TCE conversion, it exhibited a better stability in the PPC process for TCE abatement.
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Affiliation(s)
- Savita Kaliya Perumal Veerapandian
- Ghent University, Faculty of Engineering and Architecture, Department of Applied Physics, Research Unit Plasma Technology, Sint-Pietersnieuwstraat 41 B4, 9000 Ghent, Belgium
| | - Zhiping Ye
- Ghent University, Faculty of Engineering and Architecture, Department of Applied Physics, Research Unit Plasma Technology, Sint-Pietersnieuwstraat 41 B4, 9000 Ghent, Belgium; Univ. Lille, CNRS, Centrale Lille, ENSCL, Univ. Artois, UMR 8181 - UCCS - Unité de Catalyse et Chimie du Solide, F-59000 Lille, France
| | - Jean-Marc Giraudon
- Univ. Lille, CNRS, Centrale Lille, ENSCL, Univ. Artois, UMR 8181 - UCCS - Unité de Catalyse et Chimie du Solide, F-59000 Lille, France
| | - Nathalie De Geyter
- Ghent University, Faculty of Engineering and Architecture, Department of Applied Physics, Research Unit Plasma Technology, Sint-Pietersnieuwstraat 41 B4, 9000 Ghent, Belgium
| | - Rino Morent
- Ghent University, Faculty of Engineering and Architecture, Department of Applied Physics, Research Unit Plasma Technology, Sint-Pietersnieuwstraat 41 B4, 9000 Ghent, Belgium
| | - Jean-Francois Lamonier
- Univ. Lille, CNRS, Centrale Lille, ENSCL, Univ. Artois, UMR 8181 - UCCS - Unité de Catalyse et Chimie du Solide, F-59000 Lille, France.
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Van Guyse JFR, Cools P, Egghe T, Asadian M, Vergaelen M, Rigole P, Yan W, Benetti EM, Jerca VV, Declercq H, Coenye T, Morent R, Hoogenboom R, De Geyter N. Influence of the Aliphatic Side Chain on the Near Atmospheric Pressure Plasma Polymerization of 2-Alkyl-2-oxazolines for Biomedical Applications. ACS Appl Mater Interfaces 2019; 11:31356-31366. [PMID: 31381296 DOI: 10.1021/acsami.9b09999] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Plasma polymerization is gaining popularity as a technique for coating surfaces due to the low cost, ease of operation, and substrate-independent nature. Recently, the plasma polymerization (or deposition) of 2-oxazoline monomers was reported resulting in coatings that have potential applications in regenerative medicine. Despite the structural versatility of 2-oxazolines, only a few monomers have been subjected to plasma polymerization. Within this study, however, we explore the near atmospheric pressure plasma polymerization of a range of 2-oxazoline monomers, focusing on the influence of the aliphatic side-chain length (methyl to butyl) on the plasma polymerization process conditions as well as the properties of the obtained coatings. While side-chain length had only a minor influence on the chemical composition, clear effects on the plasma polymerization conditions were observed, thus gaining valuable insights in the plasma polymerization process as a function of monomer structure. Additionally, cytocompatibility and cell attachment on the coatings obtained by 2-oxazoline plasma polymerization was assessed. The coatings displayed strong cell interactive properties, whereby cytocompatibility increased with increasing aliphatic side-chain length of the monomer, reaching up to 93% cell viability after 1 day of cell culture compared to tissue culture plates. As this is in stark contrast to the antifouling behavior of the parent polymers, we compared the properties and composition of the plasma-polymerized coatings to the parent polymers revealing that a significantly different coating structure was obtained by plasma polymerization.
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Affiliation(s)
- Joachim F R Van Guyse
- Supramolecular Chemistry Group, Centre of Macromolecular Chemistry (CMaC), Department of Organic and Macromolecular Chemistry, Faculty of Sciences , Ghent University , Krijgslaan 281 S4 , 9000 Ghent , Belgium
| | - Pieter Cools
- Research Unit Plasma Technology (RUPT), Department of Applied Physics, Faculty of Engineering and Architecture , Ghent University , Sint-Pietersnieuwstraat 41 B4 , 9000 Ghent , Belgium
| | - Tim Egghe
- Supramolecular Chemistry Group, Centre of Macromolecular Chemistry (CMaC), Department of Organic and Macromolecular Chemistry, Faculty of Sciences , Ghent University , Krijgslaan 281 S4 , 9000 Ghent , Belgium
- Research Unit Plasma Technology (RUPT), Department of Applied Physics, Faculty of Engineering and Architecture , Ghent University , Sint-Pietersnieuwstraat 41 B4 , 9000 Ghent , Belgium
| | - Mahtab Asadian
- Research Unit Plasma Technology (RUPT), Department of Applied Physics, Faculty of Engineering and Architecture , Ghent University , Sint-Pietersnieuwstraat 41 B4 , 9000 Ghent , Belgium
| | - Maarten Vergaelen
- Supramolecular Chemistry Group, Centre of Macromolecular Chemistry (CMaC), Department of Organic and Macromolecular Chemistry, Faculty of Sciences , Ghent University , Krijgslaan 281 S4 , 9000 Ghent , Belgium
| | - Petra Rigole
- Laboratory of Pharmaceutical Microbiology (LPM), Department of Pharmaceutical Analysis, Faculty of Pharmaceutical Sciences , Ghent University , Ottergemsesteenweg 460 , 9000 Ghent , Belgium
| | - Wenqing Yan
- Polymer Surfaces Group, Laboratory for Surface Science and Technology, Department of Materials , ETH Zürich , Vladimir-Prelog-Weg 5 , CH-8093 Zurich , Switzerland
| | - Edmondo M Benetti
- Polymer Surfaces Group, Laboratory for Surface Science and Technology, Department of Materials , ETH Zürich , Vladimir-Prelog-Weg 5 , CH-8093 Zurich , Switzerland
- Biointerfaces , Swiss Federal Laboratories for Materials Science and Technology (Empa) , Lerchenfeldstrasse 5 , CH-9014 St. Gallen , Switzerland
| | - Valentin-Victor Jerca
- Supramolecular Chemistry Group, Centre of Macromolecular Chemistry (CMaC), Department of Organic and Macromolecular Chemistry, Faculty of Sciences , Ghent University , Krijgslaan 281 S4 , 9000 Ghent , Belgium
- Centre for Organic Chemistry "Costin D. Nenitescu" , Romanian Academy , 202B Spl. Independentei CP 35-108 , 060023 Bucharest , Romania
| | - Heidi Declercq
- Department of Basic Medical Science, Faculty of Medicine and Health Science , Ghent University , De Pintelaan 185 6B3 , 9000 Ghent , Belgium
| | - Tom Coenye
- Laboratory of Pharmaceutical Microbiology (LPM), Department of Pharmaceutical Analysis, Faculty of Pharmaceutical Sciences , Ghent University , Ottergemsesteenweg 460 , 9000 Ghent , Belgium
| | - Rino Morent
- Research Unit Plasma Technology (RUPT), Department of Applied Physics, Faculty of Engineering and Architecture , Ghent University , Sint-Pietersnieuwstraat 41 B4 , 9000 Ghent , Belgium
| | - Richard Hoogenboom
- Supramolecular Chemistry Group, Centre of Macromolecular Chemistry (CMaC), Department of Organic and Macromolecular Chemistry, Faculty of Sciences , Ghent University , Krijgslaan 281 S4 , 9000 Ghent , Belgium
| | - Nathalie De Geyter
- Research Unit Plasma Technology (RUPT), Department of Applied Physics, Faculty of Engineering and Architecture , Ghent University , Sint-Pietersnieuwstraat 41 B4 , 9000 Ghent , Belgium
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Rezaei F, Vanraes P, Nikiforov A, Morent R, De Geyter N. Applications of Plasma-Liquid Systems: A Review. Materials (Basel) 2019; 12:E2751. [PMID: 31461960 PMCID: PMC6747786 DOI: 10.3390/ma12172751] [Citation(s) in RCA: 49] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/08/2019] [Revised: 08/22/2019] [Accepted: 08/22/2019] [Indexed: 01/09/2023]
Abstract
Plasma-liquid systems have attracted increasing attention in recent years, owing to their high potential in material processing and nanoscience, environmental remediation, sterilization, biomedicine, and food applications. Due to the multidisciplinary character of this scientific field and due to its broad range of established and promising applications, an updated overview is required, addressing the various applications of plasma-liquid systems till now. In the present review, after a brief historical introduction on this important research field, the authors aimed to bring together a wide range of applications of plasma-liquid systems, including nanomaterial processing, water analytical chemistry, water purification, plasma sterilization, plasma medicine, food preservation and agricultural processing, power transformers for high voltage switching, and polymer solution treatment. Although the general understanding of plasma-liquid interactions and their applications has grown significantly in recent decades, it is aimed here to give an updated overview on the possible applications of plasma-liquid systems. This review can be used as a guide for researchers from different fields to gain insight in the history and state-of-the-art of plasma-liquid interactions and to obtain an overview on the acquired knowledge in this field up to now.
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Affiliation(s)
- Fatemeh Rezaei
- Research Unit Plasma Technology (RUPT), Department of Applied Physics, Faculty of Engineering and Architecture, Ghent University, St-Pietersnieuwstraat 41 B4, 9000 Ghent, Belgium.
| | - Patrick Vanraes
- Research group PLASMANT, Department of Chemistry, University of Antwerp, Universiteitsplein 1, 2610 Wilrijk, Belgium
| | - Anton Nikiforov
- Research Unit Plasma Technology (RUPT), Department of Applied Physics, Faculty of Engineering and Architecture, Ghent University, St-Pietersnieuwstraat 41 B4, 9000 Ghent, Belgium
| | - Rino Morent
- Research Unit Plasma Technology (RUPT), Department of Applied Physics, Faculty of Engineering and Architecture, Ghent University, St-Pietersnieuwstraat 41 B4, 9000 Ghent, Belgium
| | - Nathalie De Geyter
- Research Unit Plasma Technology (RUPT), Department of Applied Physics, Faculty of Engineering and Architecture, Ghent University, St-Pietersnieuwstraat 41 B4, 9000 Ghent, Belgium
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Chang T, Lu J, Shen Z, Zhang B, Huang Y, Cao J, Liu H, Veerapandian SKP, De Geyter N, Morent R. Post Plasma Catalysis for the Removal of Acetaldehyde Using Mn–Co/HZSM-5 Catalysts. Ind Eng Chem Res 2019. [DOI: 10.1021/acs.iecr.9b02668] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Tian Chang
- Department of Environmental Sciences and Engineering, Xi’an Jiaotong University, Xi’an 710049, China
- Research Unit Plasma Technology, Department of Applied Physics, Faculty of Engineering and Architecture, Ghent University, Sint-Pietersnieuwstraat 41-B4, 9000 Ghent, Belgium
- Key Lab of Aerosol Chemistry & Physics, SKLLQG, Institute of Earth Environment, Chinese Academy of Sciences, Xi’an 710049, China
| | - Jiaqi Lu
- Department of Environmental Sciences and Engineering, Xi’an Jiaotong University, Xi’an 710049, China
| | - Zhenxing Shen
- Department of Environmental Sciences and Engineering, Xi’an Jiaotong University, Xi’an 710049, China
- Key Lab of Aerosol Chemistry & Physics, SKLLQG, Institute of Earth Environment, Chinese Academy of Sciences, Xi’an 710049, China
| | - Bin Zhang
- Department of Environmental Sciences and Engineering, Xi’an Jiaotong University, Xi’an 710049, China
| | - Yu Huang
- Key Lab of Aerosol Chemistry & Physics, SKLLQG, Institute of Earth Environment, Chinese Academy of Sciences, Xi’an 710049, China
| | - Junji Cao
- Key Lab of Aerosol Chemistry & Physics, SKLLQG, Institute of Earth Environment, Chinese Academy of Sciences, Xi’an 710049, China
| | - Hongxia Liu
- Department of Environmental Sciences and Engineering, Xi’an Jiaotong University, Xi’an 710049, China
| | - Savita K. P. Veerapandian
- Research Unit Plasma Technology, Department of Applied Physics, Faculty of Engineering and Architecture, Ghent University, Sint-Pietersnieuwstraat 41-B4, 9000 Ghent, Belgium
| | - Nathalie De Geyter
- Research Unit Plasma Technology, Department of Applied Physics, Faculty of Engineering and Architecture, Ghent University, Sint-Pietersnieuwstraat 41-B4, 9000 Ghent, Belgium
| | - Rino Morent
- Research Unit Plasma Technology, Department of Applied Physics, Faculty of Engineering and Architecture, Ghent University, Sint-Pietersnieuwstraat 41-B4, 9000 Ghent, Belgium
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Tahir N, Wang G, Onyshchenko I, De Geyter N, Leus K, Morent R, Van Der Voort P. High-nitrogen containing covalent triazine frameworks as basic catalytic support for the Cu-catalyzed Henry reaction. J Catal 2019. [DOI: 10.1016/j.jcat.2019.06.001] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [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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Grande S, Tampieri F, Nikiforov A, Giardina A, Barbon A, Cools P, Morent R, Paradisi C, Marotta E, De Geyter N. Radicals and Ions Formed in Plasma-Treated Organic Solvents: A Mechanistic Investigation to Rationalize the Enhancement of Electrospinnability of Polycaprolactone. Front Chem 2019; 7:344. [PMID: 31165059 PMCID: PMC6535498 DOI: 10.3389/fchem.2019.00344] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2019] [Accepted: 04/26/2019] [Indexed: 01/23/2023] Open
Abstract
This paper reports and discusses the beneficial effects on the quality of electrospun polycaprolactone nanofibers brought about by pretreatment of the solvent with non-thermal plasma. Chloroform/dimethylformamide 9:1 (CHCl3:DMF 9:1) and pure chloroform were pretreated by a few minute exposure to the plasma generated by an atmospheric pressure plasma jet (APPJ). Interestingly, when pure chloroform was used, the advantages of plasma pretreatment of the solvent were way less pronounced than found with the CHCl3:DMF 9:1 mixture. The chemical modifications induced by the plasma in the solvents were investigated by means of complementary analytical techniques. GC-MS revealed the formation of solvent-derived volatile products, notably tetrachloroethylene (C2Cl4), 1,1,2,2-tetrachloroethane (C2H2Cl4), pentachloroethane (C2HCl5), hexachloroethane (C2Cl6) and, in the case of the mixed solvent, also N-methylformamide (C2H5NO). The chlorinated volatile products are attributed to reactions of ·Cl and Cl-containing methyl radicals and carbenes formed in the plasma-treated solvents. ·Cl and ·CCl3 radicals were detected and identified by EPR spectroscopy analyses. Ion chromatography revealed the presence of Cl-, NO 3 - , and HCOO- (the latter only in the presence of DMF) in the plasma-treated solvents, thus accounting for the observed increased conductivity and acidification of the solvent after plasma treatment. Mechanisms for the formation of these solvent derived products induced by plasma are proposed and discussed. The major role of radicals and ions in the plasma chemistry of chloroform and of the chloroform/dimethylformamide mixture is highlighted. The results provide insight into the interaction of plasma with organic solvents, a field so far little explored but holding promise for interesting applications.
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Affiliation(s)
- Silvia Grande
- Research Unit Plasma Technology, Department of Applied Physics, Faculty of Engineering and Architecture, Ghent University, Ghent, Belgium
| | - Francesco Tampieri
- Department of Chemical Sciences, Università degli Studi di Padova, Padua, Italy
| | - Anton Nikiforov
- Research Unit Plasma Technology, Department of Applied Physics, Faculty of Engineering and Architecture, Ghent University, Ghent, Belgium
| | - Agata Giardina
- Department of Chemical Sciences, Università degli Studi di Padova, Padua, Italy
| | - Antonio Barbon
- Department of Chemical Sciences, Università degli Studi di Padova, Padua, Italy
| | - Pieter Cools
- Research Unit Plasma Technology, Department of Applied Physics, Faculty of Engineering and Architecture, Ghent University, Ghent, Belgium
| | - Rino Morent
- Research Unit Plasma Technology, Department of Applied Physics, Faculty of Engineering and Architecture, Ghent University, Ghent, Belgium
| | - Cristina Paradisi
- Department of Chemical Sciences, Università degli Studi di Padova, Padua, Italy
| | - Ester Marotta
- Department of Chemical Sciences, Università degli Studi di Padova, Padua, Italy
| | - Nathalie De Geyter
- Research Unit Plasma Technology, Department of Applied Physics, Faculty of Engineering and Architecture, Ghent University, Ghent, Belgium
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Asadian M, Dhaenens M, Onyshchenko I, De Waele S, Declercq H, Cools P, Devreese B, Deforce D, Morent R, De Geyter N. Plasma Functionalization of Polycaprolactone Nanofibers Changes Protein Interactions with Cells, Resulting in Increased Cell Viability. ACS Appl Mater Interfaces 2018; 10:41962-41977. [PMID: 30444341 DOI: 10.1021/acsami.8b14995] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
The surface properties of electrospun scaffolds can greatly influence protein adsorption and, thus, strongly dictate cell-material interactions. In this study, we aim to investigate possible correlations between the surface properties of argon, nitrogen, and ammonia and helium plasma-functionalized polycaprolactone (PCL) nanofibers (NFs) and their cellular interactions by examining the protein corona patterns of the plasma-treated NFs as well as the cell membrane proteins involved in cell proliferation. As a result of the performed plasma treatments, PCL NFs morphology was preserved, while wettability was improved profoundly after all treatments because of the incorporation of polar surface groups. Depending on the discharge gas, different types of groups are incorporated, which influenced the resultant cell-material interactions. Argon plasma-functionalized PCL NFs, only enriched by oxygen-containing functional groups, were found to show the best cell-material interactions, followed by N2 and He/NH3 plasma-treated samples. Sodium dodecyl sulfate polyacrylamide gel electrophoresis and liquid chromatography-mass spectrometry clearly indicated an increased protein retention compared with non-treated PCL NFs. The nine proteins retained best on plasma-treated NF are important mediators of extracellular matrix interaction, illustrating the importance thereof for cell proliferation and the viability of cells. Finally, 92 proteins that can be used to differentiate how the different plasma treatments are clustered and subjected to a gene ontology study, illustrating the importance of keratinization and extracellular matrix organization.
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Affiliation(s)
- Mahtab Asadian
- Department of Applied Physics, Research Unit Plasma Technology (RUPT), Faculty of Engineering & Architecture , Ghent University , Sint-Pietersnieuwstraat 41, B4 , 9000 Ghent , Belgium
| | - Maarten Dhaenens
- Laboratory for Pharmaceutical Biotechnology , Ghent University , Ottergemsesteenweg 460 , B-9000 Ghent , Belgium
| | - Iuliia Onyshchenko
- Department of Applied Physics, Research Unit Plasma Technology (RUPT), Faculty of Engineering & Architecture , Ghent University , Sint-Pietersnieuwstraat 41, B4 , 9000 Ghent , Belgium
| | - Stijn De Waele
- Laboratory of Microbiology, Protein Research Unit , Ghent University , Karel Lodewijk Ledeganckstraat 35 , 9000 Ghent , Belgium
| | - Heidi Declercq
- Department of Basic Medical Sciences, Tissue Engineering Group, Faculty of Medicine and Health Sciences , Ghent University , De Pintelaan 185, B3 , 9000 , Ghent , Belgium
| | - Pieter Cools
- Department of Applied Physics, Research Unit Plasma Technology (RUPT), Faculty of Engineering & Architecture , Ghent University , Sint-Pietersnieuwstraat 41, B4 , 9000 Ghent , Belgium
| | - Bart Devreese
- Laboratory of Microbiology, Protein Research Unit , Ghent University , Karel Lodewijk Ledeganckstraat 35 , 9000 Ghent , Belgium
| | - Dieter Deforce
- Laboratory for Pharmaceutical Biotechnology , Ghent University , Ottergemsesteenweg 460 , B-9000 Ghent , Belgium
| | - Rino Morent
- Department of Applied Physics, Research Unit Plasma Technology (RUPT), Faculty of Engineering & Architecture , Ghent University , Sint-Pietersnieuwstraat 41, B4 , 9000 Ghent , Belgium
| | - Nathalie De Geyter
- Department of Applied Physics, Research Unit Plasma Technology (RUPT), Faculty of Engineering & Architecture , Ghent University , Sint-Pietersnieuwstraat 41, B4 , 9000 Ghent , Belgium
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Ghobeira R, Asadian M, Vercruysse C, Declercq H, De Geyter N, Morent R. Wide-ranging diameter scale of random and highly aligned PCL fibers electrospun using controlled working parameters. POLYMER 2018. [DOI: 10.1016/j.polymer.2018.10.022] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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Grande S, Cools P, Asadian M, Van Guyse J, Onyshchenko I, Declercq H, Morent R, Hoogenboom R, De Geyter N. Fabrication of PEOT/PBT Nanofibers by Atmospheric Pressure Plasma Jet Treatment of Electrospinning Solutions for Tissue Engineering. Macromol Biosci 2018; 18:e1800309. [PMID: 30353664 DOI: 10.1002/mabi.201800309] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [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: 08/10/2018] [Revised: 09/26/2018] [Indexed: 01/13/2023]
Abstract
This study focuses on the enhanced electrospinning of 300-Polyethylene oxide-polyethylene oxide terephthalate/polybutylene terephthalate (PEOT/PBT). An atmospheric pressure plasma jet for liquid treatment is applied to a solution with 9 w/v% PEOT/PBT dissolved in either chloroform (CHCl3 ), CHCl3 + N,N-dimethylformamide (DMF), CHCl3 + methanol (MeOH), or CHCl3 + hexafluoroisopropanol (HFIP). For all conditions, the plasma-treated samples present better-quality fibers: less or no-beads and uniform fiber diameter distribution. Except for CHCl3 + DMF, no significant changes to the material bulk are detected, as shown with size exclusion chromatography (SEC). X-ray photoelectron spectroscopy (XPS) spectra performed on nanofibers record an increase in C-C bonds for the CHCl3 + DMF combination upon plasma modification, while a shift and slight increase in oxygen-containing bonds is found for the CHCl3 + HFIP and CHCl3 + MeOH mixtures. MTT assay shows no-cytotoxic effects for CHCl3 + DMF, while a better cellular adhesion is found on nanofibers from CHCl3 + MeOH and CHCl3 + HFIP. Among the examined additives, MeOH is preferable as it produces beadless electrospun nanofibers with an average diameter of 290 ± 100 nm without causing significant changes to the final nanofiber surface properties.
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Affiliation(s)
- Silvia Grande
- Department of Applied Physics, Research Unit Plasma Technology (RUPT), Faculty of Engineering and Architecture, Ghent University, Sint-Pietersnieuwstraat 41 B4, 9000, Ghent, Belgium
| | - Pieter Cools
- Department of Applied Physics, Research Unit Plasma Technology (RUPT), Faculty of Engineering and Architecture, Ghent University, Sint-Pietersnieuwstraat 41 B4, 9000, Ghent, Belgium
| | - Mahtab Asadian
- Department of Applied Physics, Research Unit Plasma Technology (RUPT), Faculty of Engineering and Architecture, Ghent University, Sint-Pietersnieuwstraat 41 B4, 9000, Ghent, Belgium
| | - Joachim Van Guyse
- Department of Organic and Macromolecular Chemistry, Supramolecular Chemistry Group, Faculty of Sciences, Ghent University, Krijgslaan 281 S4, 9000, Ghent, Belgium
| | - Iuliia Onyshchenko
- Department of Applied Physics, Research Unit Plasma Technology (RUPT), Faculty of Engineering and Architecture, Ghent University, Sint-Pietersnieuwstraat 41 B4, 9000, Ghent, Belgium
| | - Heidi Declercq
- Department of Basic Medical Sciences, Tissue Engineering Group, Faculty of Medicine and Health Sciences, Ghent University, De Pintelaan 185, B3, 9000, Ghent, Belgium
| | - Rino Morent
- Department of Applied Physics, Research Unit Plasma Technology (RUPT), Faculty of Engineering and Architecture, Ghent University, Sint-Pietersnieuwstraat 41 B4, 9000, Ghent, Belgium
| | - Richard Hoogenboom
- Department of Organic and Macromolecular Chemistry, Supramolecular Chemistry Group, Faculty of Sciences, Ghent University, Krijgslaan 281 S4, 9000, Ghent, Belgium
| | - Nathalie De Geyter
- Department of Applied Physics, Research Unit Plasma Technology (RUPT), Faculty of Engineering and Architecture, Ghent University, Sint-Pietersnieuwstraat 41 B4, 9000, Ghent, Belgium
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Pandiyaraj KN, Ramkumar MC, Arun Kumar A, Padmanabhan PVA, Pichumani M, Bendavid A, Cools P, De Geyter N, Morent R, Kumar V, Gopinath P, Su PG, Deshmukh RR. Evaluation of surface properties of low density polyethylene (LDPE) films tailored by atmospheric pressure non-thermal plasma (APNTP) assisted co-polymerization and immobilization of chitosan for improvement of antifouling properties. Mater Sci Eng C Mater Biol Appl 2018; 94:150-160. [PMID: 30423696 DOI: 10.1016/j.msec.2018.08.062] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/29/2017] [Revised: 06/25/2018] [Accepted: 08/30/2018] [Indexed: 11/26/2022]
Abstract
This work describes the development of antifouling functional coatings on the surface of low density polyethylene (LDPE) films by means of atmospheric pressure non-thermal plasma (APNTP) assisted copolymerization using a mixture of acrylic acid and poly (ethylene glycol). The aim of the study was to investigate the antifouling properties of the plasma copolymerized LDPE films and the same was carried out as a function of deposition time with fixed applied potential of 14 kV. In a second stage, the plasma copolymerized LDPE films were functionalized with chitosan (CHT) to further enhance its antifouling properties. The surface hydrophilicity, structural, topographical and chemistry of the plasma copolymerized LDPE films were examined by contact angle (CA), X-ray diffraction (XRD), atomic force microscopy (AFM), Fourier transform infrared spectroscopy (FTIR) and X-ray photoelectron spectroscopy (XPS). Coating stability was also studied in detail over a storage time of 15 days by storing in water and air. The antifouling properties of the plasma copolymerized LDPE films were examined via protein adsorption and platelet adhesion studies. CA study showed significant changes in surface wettability after the coating process. XPS and FTIR analysis proved the presence of a dense multifunctional coating and an efficient immobilization of CHT. Substantial amendments in surface topography were observed, positively enhancing the overall surface hydrophilicity. Finally, in-vitro analysis showed excellent antifouling behavior of the surface modified LDPE films.
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Affiliation(s)
- K N Pandiyaraj
- Surface Engineering Laboratory, Department of Physics, Sri Shakthi Institute of Engineering and Technology, Coimbatore 641062, India.
| | - M C Ramkumar
- Surface Engineering Laboratory, Department of Physics, Sri Shakthi Institute of Engineering and Technology, Coimbatore 641062, India
| | - A Arun Kumar
- Surface Engineering Laboratory, Department of Physics, Sri Shakthi Institute of Engineering and Technology, Coimbatore 641062, India
| | - P V A Padmanabhan
- Surface Engineering Laboratory, Department of Physics, Sri Shakthi Institute of Engineering and Technology, Coimbatore 641062, India
| | - M Pichumani
- Department of Nano Science and Technology, Sri Ramakrishna Engineering College, Coimbatore 641022, India
| | - Avi Bendavid
- Plasma Processing & Deposition Team, CSIRO Manufacturing Flagship, Australia
| | - Pieter Cools
- Research Unit Plasma Technology (RUPT), Department of Applied Physics, Faculty of Engineering, Ghent University, Jozef Plateaustraat 22, 9000 Ghent, Belgium
| | - N De Geyter
- Research Unit Plasma Technology (RUPT), Department of Applied Physics, Faculty of Engineering, Ghent University, Jozef Plateaustraat 22, 9000 Ghent, Belgium
| | - R Morent
- Research Unit Plasma Technology (RUPT), Department of Applied Physics, Faculty of Engineering, Ghent University, Jozef Plateaustraat 22, 9000 Ghent, Belgium
| | - Vinay Kumar
- Nanobiotechnology Laboratory, Centre for Nanotechnology, Indian Institute of Technology Roorkee, Roorkee, Uttarakhand 247667, India
| | - P Gopinath
- Nanobiotechnology Laboratory, Centre for Nanotechnology, Indian Institute of Technology Roorkee, Roorkee, Uttarakhand 247667, India
| | - Pi-Guey Su
- Department of Chemistry, Chinese Culture University, Taipei 111, Taiwan
| | - R R Deshmukh
- Department of Physics, Institute of Chemical Technology, Matunga, Mumbai 400 019, India
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Asadian M, Onyshchenko I, Thukkaram M, Esbah Tabaei PS, Van Guyse J, Cools P, Declercq H, Hoogenboom R, Morent R, De Geyter N. Effects of a dielectric barrier discharge (DBD) treatment on chitosan/polyethylene oxide nanofibers and their cellular interactions. Carbohydr Polym 2018; 201:402-415. [PMID: 30241836 DOI: 10.1016/j.carbpol.2018.08.092] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [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: 06/15/2018] [Revised: 08/14/2018] [Accepted: 08/22/2018] [Indexed: 11/17/2022]
Abstract
In this study, chitosan (CS)/polyethylene oxide (PEO) nanofibrous mats (Ø: 166 ± 43 nm) were fabricated by electrospinning and subsequently surface-modified by a dielectric barrier discharge (DBD) sustained in argon, ammonia/helium or nitrogen. The surface properties of the CS/PEO nanofibers (NFs) before and after plasma treatment were characterized using contact angle measurements, X-ray photoelectron spectroscopy (XPS) and scanning electron microscopy (SEM). Additionally, the mechanical properties and PEO leaching in aqueous conditions of the different NFs under study were examined by tensile tests and nuclear magnetic resonance (1H NMR) spectroscopy respectively. Finally, cell behavior and cell morphology of human foreskin fibroblasts (HFFs) on the CS/PEO NFs were evaluated via live/dead fluorescence microscopy, MTT assays and SEM. The obtained results revealed that the surface free energy of the CS/PEO NFs was significantly increased after plasma modification, which was correlated to an enrichment in surface oxygen (Ar, N2, NH3/He) and nitrogen (N2, NH3/He) functional groups. All performed plasma treatments also led to an increase in ultimate tensile strength, most likely due to an increased fiber-to-fiber friction. Additionally, it was also observed that N2 plasma treatment resulted in a decrease in PEO release, which could be attributed to more pronounced surface cross-linking. Cellular interactions on the CS/PEO NFs also significantly increased due to the performed plasma treatments. The best cellular response was noted for the Ar plasma modification although the surface hydrophilicity was the lowest in this case. These observations thus suggest that not only the wettability characteristics but also the presence of distinct functional groups on plasma-treated CS/PEO NFs have a significant influence on the observed enhanced cellular interactions.
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Affiliation(s)
- Mahtab Asadian
- Department of Applied Physics, Research Unit Plasma Technology (RUPT), Faculty of Engineering & Architecture, Ghent University, Sint-Pietersnieuwstraat 41, B4, 9000, Ghent, Belgium.
| | - Iuliia Onyshchenko
- Department of Applied Physics, Research Unit Plasma Technology (RUPT), Faculty of Engineering & Architecture, Ghent University, Sint-Pietersnieuwstraat 41, B4, 9000, Ghent, Belgium.
| | - Monica Thukkaram
- Department of Applied Physics, Research Unit Plasma Technology (RUPT), Faculty of Engineering & Architecture, Ghent University, Sint-Pietersnieuwstraat 41, B4, 9000, Ghent, Belgium.
| | - Parinaz Saadat Esbah Tabaei
- Department of Applied Physics, Research Unit Plasma Technology (RUPT), Faculty of Engineering & Architecture, Ghent University, Sint-Pietersnieuwstraat 41, B4, 9000, Ghent, Belgium.
| | - Joachim Van Guyse
- Department of Organic and Macromolecular Chemistry, Supramolecular Chemistry Group, Faculty of Sciences, Ghent University, Krijgslaan 281, S4, 9000, Ghent, Belgium.
| | - Pieter Cools
- Department of Applied Physics, Research Unit Plasma Technology (RUPT), Faculty of Engineering & Architecture, Ghent University, Sint-Pietersnieuwstraat 41, B4, 9000, Ghent, Belgium.
| | - Heidi Declercq
- Department of Basic Medical Sciences, Tissue Engineering Group, Faculty of Medicine and Health Sciences, Ghent University, De Pintelaan 185, B3, 9000, Ghent, Belgium.
| | - Richard Hoogenboom
- Department of Organic and Macromolecular Chemistry, Supramolecular Chemistry Group, Faculty of Sciences, Ghent University, Krijgslaan 281, S4, 9000, Ghent, Belgium.
| | - Rino Morent
- Department of Applied Physics, Research Unit Plasma Technology (RUPT), Faculty of Engineering & Architecture, Ghent University, Sint-Pietersnieuwstraat 41, B4, 9000, Ghent, Belgium.
| | - Nathalie De Geyter
- Department of Applied Physics, Research Unit Plasma Technology (RUPT), Faculty of Engineering & Architecture, Ghent University, Sint-Pietersnieuwstraat 41, B4, 9000, Ghent, Belgium.
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Conzatti G, Chamary S, De Geyter N, Cavalie S, Morent R, Tourrette A. Surface functionalization of plasticized chitosan films through PNIPAM grafting via UV and plasma graft polymerization. Eur Polym J 2018. [DOI: 10.1016/j.eurpolymj.2018.06.020] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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Sultana S, Ye Z, Veerapandian SK, Löfberg A, De Geyter N, Morent R, Giraudon JM, Lamonier JF. Synthesis and catalytic performances of K-OMS-2, Fe/K-OMS-2 and Fe-K-OMS-2 in post plasma-catalysis for dilute TCE abatement. Catal Today 2018. [DOI: 10.1016/j.cattod.2017.05.078] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Chan KV, Onyshchenko I, Nikiforov A, Aziz G, Morent R, De Geyter N. Plasma polymerization of cyclopropylamine with a sub-atmospheric pressure DBD. Eur Polym J 2018. [DOI: 10.1016/j.eurpolymj.2018.03.040] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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