A5074585625- biodegradable polymer synthesis and properties
- Microplastics and Plastic Pollution
- Recycling and Waste Management Techniques
- Gold and Silver Nanoparticles Synthesis and Applications
- Bone Tissue Engineering Materials
- Carbon Nanotubes in Composites
- Advanced biosensing and bioanalysis techniques
- Plasmonic and Surface Plasmon Research
- Nonlinear Optical Materials Studies
- Advanced Cellulose Research Studies
- Nanoparticles: synthesis and applications
- Nanocomposite Films for Food Packaging
- Additive Manufacturing and 3D Printing Technologies
- Electromagnetic Launch and Propulsion Technology
- Mechanical and Optical Resonators
- Dental Implant Techniques and Outcomes
- Carbon dioxide utilization in catalysis
- Protein Hydrolysis and Bioactive Peptides
- Microgrid Control and Optimization
- Particle accelerators and beam dynamics
- Fullerene Chemistry and Applications
- Advanced Nanomaterials in Catalysis
- Silk-based biomaterials and applications
- Silicon Nanostructures and Photoluminescence
- Biosensors and Analytical Detection
Technological University of the Shannon: Midlands Midwest
2021-2025
Shannon Applied Biotechnology Centre
2022-2025
Athlone Institute of Technology
2019-2024
University of Belgrade
2021
Mines Saint-Étienne
2014-2017
Institut des Matériaux, de Microélectronique et des Nanosciences de Provence
2015
Ollscoil na Gaillimhe – University of Galway
2008-2014
Réseau pour la Transition Énergétique
2014
National University of Ireland
2014
Dublin City University
2011-2012
Solution phase triangular silver nanoplates (TSNP) with versatile tunability throughout the visible−NIR wavelengths are presented as highly sensitive localized surface plasmon refractive index sensors. A range of 20 TSNP solutions edge lengths ranging from 11 to 200 nm and aspect ratios 2 13 have been studied comprehensively using AFM, TEM, UV−vis−NIR spectroscopy. Studies resonance (LSPR) peak's sensitivity changes performed a simple sucrose concentration method whereby surrounding can...
Using agarose gel electrophoresis, we measured the effectiveness of high-Z metal particles different sizes on SSB and DSB yields for plasmid DNA irradiated with 160 kVp X rays. For samples prepared in Tris-EDTA buffer, gold nanoparticles were shown to increase G'(SSB) typically by a factor greater than 2 while G'(DSB) increased less 2. Similar dose-modifying effects also observed using microspheres. Addition 10(-1) M DMSO decreased damage 0.5. Plasmid PBS showed significantly compared those...
The protection of silver nanoprisms against etching by the epitaxial deposition a thin layer gold in solution has been investigated. It found that at low Au/Ag ratios (∼0.08 to 0.17) is deposited on edges as expected, but without structural damage typically associated with galvanic replacement. Furthermore, this provides robust chloride and strong evidence face-selective does not take place flat {111} faces nanoprisms. Additionally, protecting results only small red shift position main...
Nanotechnology has vast potential for expanded development and novel application in numerous sectors of society. With growing use applications, substantial production volumes associated environmental release can be anticipated. Exposure effect nanoparticles (NP) on biological systems may intrinsic to their physicochemical properties introducing unknown risk. Herein, we expand the knowledge health impact silver (AgNPs), testing acute toxicity 14 AgNP preparations developing zebrafish embryos...
Efficient low carbon foot print methods are critical to achieving circularity for the dominant post-consumer plastic polyethylene terephthalate (PET). In a strong sustainability advancement over previous technologies, depolymerization of waste PET bottles was performed using dissolution/degradation approach optimized in accordance with polymer mechanical parameter inter-relationships. A dual functioning deep eutectic solvent (DES), comprising m-cresol and choline chloride, served as both...
Effective and efficient hybrid depolymerisation technologies are emerging as high potential sustainable routes with considerable benefits over conventional recycling methods for the achievement of circular economies plastics. Herein, combined green fast glycolysis-hydrolysis depolymerization polyethylene terephthalate (PET) was carried out under microwave irradiation (MW) excellent efficiencies. In MW assisted glycolysis PET, catalytic activity two deep eutectic solvents (DES) based on...
Abstract Blends of poly(lactic acid) (PLA)/poly(3‐hydroxybutyrate) (PHB) (70/30 wt%) were prepared, and the effects multiple mechanical recycling up to 5 times on rheology–morphology relationships, thermal, properties investigated. Rheological morphological investigations indicated a degree immiscibility two combined polymers. Notably, served improve interfacial interaction phases through limited transesterification reactions increased homogeneous morphologies. While there was significant...
A large bone defect is defined as a that exceeds the regenerative capacity of bone. Nowadays, autologous grafting still gold standard treatment. In this study, hybrid tissue engineering scaffold (BTE) was designed with biocompatibility, biodegradability and adequate mechanical strength primary objectives. Chitosan (CS) biocompatible biodegradable polymer can be used in wide range applications engineering. Hydroxyapatite (HAp) fluorapatite (FAp) have potential to improve properties CS....
Ubiquitous post-consumer plastic waste is often physically mixed combining recalcitrant petroleum-based plastics with bioplastics, forming (petro-bio)plastic streams. Finding appropriate end-of-life (EoL) strategies for highly pertinent in achieving environmental protection, sustainability value chain industries including recyclers and government policy makers worldwide. The presence of bioplastic polyethylene terephthalate (PET) or other streams poses a substantial drawback to mechanical...
Fossil-based plastics pose significant environmental challenges due to their persistence and carbon footprint, resulting in pollution long-term climate change. In the present study innovative bioplastic films trays for packaging applications were developed from protein-rich microbial biomass with glycerol as plasticizer. The demonstrated excellent film-forming properties through compression molding, final materials exhibited good mechanical gas barrier - an average oxygen permeability...
Experimental measurements of nonlinear optical extinction nanosecond laser pulses by a set conjugated copolymer/multiwalled carbon-nanotube composites dispersed in solution are reported here. The polymer poly(para-phenylenevinylene-co-2,5-dioctyloxy-meta-phenylenevinylene) and multiwalled were varied according to nanotube mass content. experiments performed with an open-aperture Z scan 6-ns Gaussian at 532 nm from frequency-doubled, Q-switched Nd:YAG laser. the incident displays enhanced...
This paper reports our progress towards developing a reproducible and rapid method to prepare triangular silver nanoplates.The methods are all based on seed-mediated procedure involving the reduction of ions with ascorbic acid in aqueous solution have variously involved polyvinylalcohol, citrate, polystyrenesulphonate as modiers.The nanoplate sols well dened local surface plasmon resonances, which can be tuned throughout visible near IR.Aspect ratio (the edge length thickness) is shown...
Naturally colored packaging systems with improved color stability are essential as alternatives to mainstay synthetic conventional plastics, which typically present high toxicity and environmental pollution challenges. Herein, we report a versatile all green fabrication process for bioplastic films. Curcumin (CUR), model plant-based colorant, was incorporated newly developed natural hybrid fillers of montmorillonite (MMT) biomass waste-recovered cellulose (CEL) performance. The CUR-based...
The exposure of microorganisms to conventional plastics is a relatively recent occurrence, affording limited time for evolutionary adaptation. As part the EU-funded project BioICEP, this study delves into plastic degradation potential isolated from sites with prolonged pollution, such as plastic-polluted forests, biopolymer-contaminated soil, oil-contaminated municipal landfill, but also distinctive soil sample pieces buried three decades ago. Additionally, samples Arthropoda species were...
Van Hove singularities (VHS) in the density of states multiwalled carbon nanotubes (MWNTs) have been observed by optical spectroscopy for first time to authors' knowledge. Additionally, unexpected visible luminescence has on photoexcitation at 1064 nm. This is believed arise from radiative transitions between energy VHS. A mechanism describing underlying processes, which involve multiphoton absorption followed upconverted VHS states, presented. Our results show that presence readily...
Rapid, wash-free highly sensitive detection of C-reactive protein is reported using nanoplate biosensor sols.
Stereolithography (SLA) is a form of 3D printing technology used for the production parts and patterns in layer by fashion. Traditionally, has been manufacture prototypes, however it increasingly being small volumes. However, there are limited materials that can be to produce using this process they commonly need additional processes finished part. Additionally, time-consuming currently not suitable large scale low-cost parts. Injection moulding, on other hand, where molten polymer forced...
Meeting the challenge of circularity for plastics requires amenability to repurposing post-use, as equivalent or upcycled products. In a compelling advancement, complete biodegradable polyvinyl alcohol/thermoplastic starch (PVA/TPS) food packaging film was demonstrated by bioconversion high-market-value biopigments and polyhydroxybutyrate (PHB) polyesters. The PVA/TPS mechanical properties (tensile strength (σu), 22.2 ± 4.3 MPa; strain at break (εu), 325 73%; Young’s modulus (E), 53–250 MPa)...
Triangular silver nanoplates (TSNPs) exhibit unique optical and antimicrobial properties due to their shape, sharp edges, vertices. In this study, TSNPs were incorporated into biopolymer blends (bacterial cellulose (BC) with polylactic acid (PLA), polycaprolactone (PCL), polyhydroxybutyrate (PHB)). Antimicrobial activity of materials was tested against Escherichia coli ATCC 95922 Staphylococcus aureus 25923 (106 CFU/mL). After incubation (24 h at 37 °C, 100 rpm), density measured 630 nm....
The circular economy is emerging with new sustainable solutions to the ever-growing plastic waste challenge, garnering increasing attention. In this study, possibility modify expensive Hestrin–Schramm medium (HS) for bacterial nanocellulose (BNC) production and replace significant amounts of glucose terephthalic acid (TPA) derived after reactive extrusion processing mixed yielding post consumer TPA (pcTPA), was evaluated from laboratory scale fermentation at pilot scale. Fourier-transform...