A5009378401- Supercapacitor Materials and Fabrication
- Electrospun Nanofibers in Biomedical Applications
- Advanced Sensor and Energy Harvesting Materials
- Advanced Cellulose Research Studies
- biodegradable polymer synthesis and properties
- Laser-Ablation Synthesis of Nanoparticles
- Electrochemical sensors and biosensors
- Quantum Dots Synthesis And Properties
- Nonlinear Optical Materials Studies
- Biosensors and Analytical Detection
- Graphene and Nanomaterials Applications
- Recycling and Waste Management Techniques
- Nanomaterials and Printing Technologies
- Electrohydrodynamics and Fluid Dynamics
- Biofuel production and bioconversion
- Surface Modification and Superhydrophobicity
- Advanced Battery Materials and Technologies
- Ocular Surface and Contact Lens
- Nanomaterials for catalytic reactions
- Advanced biosensing and bioanalysis techniques
- 2D Materials and Applications
- Graphene research and applications
- Bee Products Chemical Analysis
- Adsorption and biosorption for pollutant removal
- Advancements in Transdermal Drug Delivery
Universidade Nova de Lisboa
2020-2024
Uninova
2024
University of Lisbon
2022
Rede de Química e Tecnologia
2020
University of Évora
2007
The ability to synthesize laser-induced graphene (LIG) on cellulosic materials such as paper opens the door a wide range of potential applications, from consumer electronics biomonitoring. In this work, strain and bending sensors fabricated by irradiation regular filter with CO2 laser are presented. A systematic study influence different process parameters conversion cellulose fibers into LIG is undertaken, analyzing resulting morphology, structure, conductivity, surface chemistry. obtained...
Since the discovery of laser-induced graphene (LIG), significant advances have been made to obtain green LIG (gLIG) from abundant, eco-friendly, natural, and organic renewable bio-based carbon sources. Recently, some sustainable cost-effective electronic devices designed with gLIG, resulting in diverse solutions environmental impact caused by waste (e-waste). However, there are still several challenges that must be addressed regarding widespread market implementation gLIG-based products,...
Direct Laser Writing (DLW) has been increasingly selected as a microfabrication route for efficient, cost-effective, high-resolution material synthesis and conversion. Concurrently, lasers participate in the patterning assembly of functional geometries several fields application, which electronics stand out. In this review, recent advances strategies based on DLW are surveyed outlined, laser growth strategies. First, main parameters influencing transformation mechanisms summarized, aimed at...
Abstract Laser irradiation to induce networks of graphene‐based structures toward cost‐effective, flexible device fabrication is a highly pursued area, with applications in various polymeric substrates. This work reports the application this approach commonly available, eco‐friendly, low‐cost substrates, namely, chromatographic and office papers. Through an appropriate chemical treatment sodium tetraborate as fire‐retardant agent, photothermal conversion porous laser‐induced graphene (LIG)...
Abstract Laser-induced graphene (LIG) is as a promising material for flexible microsupercapacitors (MSCs) due to its simple and cost-effective processing. However, LIG-MSC research production has been centered on non-sustainable polymeric substrates, such polyimide. In this work, it presented cost-effective, reproducible, robust approach the preparation of LIG structures via one-step laser direct writing chromatography paper. The developed strategy relies soaking paper in 0.1 M sodium...
Abstract The demand for smart, wearable devices has been dictating our daily life with the evolution of integrated miniaturized electronics. With technological innovations, comes impactful human footprint left on planet’s ecosystems. Therefore, it is necessary to explore renewable materials and sustainable methodologies industrial processes. Here, an eco-friendly approach producing flexible electrodes based a single-step direct laser writing reported. A 1.06 µ m wavelength fiber was used...
Abstract Extensive research into green technologies is driven by the worldwide push for eco‐friendly materials and energy solutions. The focus on synergies that prioritize sustainability environmental benefits. This study explores potential of abundant, non‐toxic, sustainable resources such as paper, lignin‐enriched cork producing laser‐induced graphene (LIG) supercapacitor electrodes with improved capacitance. A single‐step methodology using a CO 2 laser system developed fabricating these...
Poly(hydroxyalkanoates) (PHAs) with differing material properties, namely, the homopolymer poly(3-hydroxybutyrate), P(3HB), copolymer poly(3-hydroxybutyrate-co-3-hydroxyvalerate), P(3HB-co-3HV), a 3HV content of 25 wt.% and medium chain length PHA, mcl-PHA, mainly composed 3-hydroxydecanoate, were studied as scaffolding for cell culture. P(3HB) P(3HB-co-3HV) individually spun into fibers, well blends mcl-PHA each scl-PHAs. An overall biopolymer concentration 4 was used to prepare...
Komagataeibacter xylinus strains DSM 2004 and 46604 were evaluated for their ability to grow produce bacterial cellulose (BC) upon cultivation on terephthalic acid (TA) ethylene glycol (EG), which are monomers of the petrochemical-derived plastic polyethylene terephthalate (PET). Both able utilize TA, EG, mixtures BC synthesis, with different performances. K. achieved higher production from TA (0.81 ± 0.01 g/L), EG (0.64 0.02 + (0.6 0.1 g/L) than strain 46604. The latter was unable as sole...
Although many delivery systems have been proposed to improve drug permeation through the skin, all of them suffer from several limitations. This drives a continuous search for innovative that can provide safe and effective transdermal solutions. In line with this, microneedle (MN) arrays, hybrid combination hypodermic injections patches, proposed. MNs consist microscale needles pierce skin by simple, minimally invasive, painless route, enabling transport drugs macromolecules into human body....
The adsorption of HgCl 2 , [HgCl 4 ] 2– and Hg 2+ onto a series activated carbon fibres was studied. These included the as-received commercial fibre (K), that obtained after modification via by sulphuric acid oxidation (K AC ) reaction with pentaethylenehexamine BAS ). effects concentration (10–1500 mg/l), solution pH (1–10) temperature (25°C, 35°C 45°C) were mercury(II) isotherms followed Langmuir model maximum capacities 361.0, 142.2 300.3 mg/g for respectively. Fibre K proved to have...
Gel polymer electrolytes (GPEs) are regarded as a promising alternative to conventional electrolytes, combining the advantages of solid and liquid electrolytes. Leveraging abundance eco-friendliness cellulose-based materials, GPEs were produced using methyl cellulose incorporating various doping agents, either an ionic (1-Butyl-1-methylpyrrolidinium bis(trifluoromethylsulfonyl)imide [Pyr14][TFSI]), its polymeric analogue (Poly(diallyldimethylammonium bis(trifluoromethylsulfonyl)imide)...