106 documents found, page 1 of 11

Sort by Issue Date

Poly(butylene succinate)-based composites with technical and extracted lignins ...

Melro, Elodie; Duarte, Hugo; Eivazi, Alireza; Costa, Carolina; Faleiro, Maria Leonor; Rosa Da Costa, Ana; Antunes, Filipe E.; Valente, Artur J. M.

Poly(butylene succinate) (PBS) has been drawing attention as a reliable biodegradable and sustainable alternative to synthetic petroleum-based polymers. In this study, PBS-lignin composites were developed using a recently extracted lignin (LA-lignin) from pine wood residues employing an innovative sustainable approach. These composites were systematically compared with PBS-based composites formed with commonly ...


Lignin-furanic rigid foams: Enhanced methylene blue removal capacity, recyclabi...

Duarte, Hugo; Brás, João; Saoudi Hassani, El Mokhtar; Aliaño González, María José; Magalhães, Solange; Alves, Luís; Valente, Artur J. M.

Worldwide, populations face issues related to water and energy consumption. Water scarcity has intensified globally, particularly in arid and semiarid regions. Projections indicate that by 2030, global water demand will rise by 50%, leading to critical shortages, further intensified by the impacts of climate change. Moreover, wastewater treatment needs further development, given the presence of persistent organ...


Triazine-Based Porous Organic Polymers: Synthesis and Application in Dye Adsorp...

Matias, Pedro M. C.; Murtinho, Dina Maria B.; Valente, Artur J. M.

The scientific community has been developing promising materials to increase the sustainability and efficiency of production processes and pollutant environmental remediation strategies. Porous organic polymers (POPs) are of special interest, as they are insoluble custom-built materials at the molecular level, endowed with low densities and high stability, surface areas, and porosity. This paper describes the s...


Straightforward purification method for the determination of the activity of gl...

González-Ceballos, Lara; Carlos Guirado-Moreno, Jose; Utzeri, Gianluca; Miguel García, José; Fernández-Muiño, Miguel A.; Osés, Sandra M.

Glucose oxidase (GOX) and catalase (CAT) regulate the amount of H2O2 in honey, by generating or consuming it, so they are related to the antibacterial and antioxidant activity of honey. However, their activities are hardly analysed, since the process requires a previous dialysis that is non-selective, very time-consuming (>24 h), eco-unfriendly (>6L of buffer) and expensive. This research shows the design and p...


Editorial: Hot topic: luminescence in rare earth coordination compounds

Gawryszewska, Paula; Miller, Lawrence W; Valente, Artur J. M.


Transport Properties of Carbohydrates: Towards the Minimization Toxicological R...

Trindade, Ana C. V.; Fangaia, Sónia I. G.; Nicolau, Pedro M. G.; Messias, Ana; Ribeiro, Ana C. F.; Silva, Daniela S. A.; Valente, Artur J. M.

The influence of oligosaccharides ( -cyclodextrin, -cyclodextrin and -cyclodextrin), and a polysaccharide, sodium hyaluronate (NaHy), on the diffusion of aqueous solutions of cobalt and chromium chlorides has been investigated. Cobalt and chromium are constituents of metal alloys for biomedical use, including dental prostheses. Thus, the release of these ions in the human body can lead to harmful biological eff...


Reduced Chitosan as a Strategy for Removing Copper Ions from Water

Matias, Pedro M. C.; Sousa, Joana F. M.; Bernardino, Eva F.; Vareda, João P.; Durães, Luisa; Abreu, Paulo E.; Marques, Jorge M. C.

Toxic heavy metals are priority pollutants in wastewater, commonly present in dangerous concentrations in many places across the globe. Although in trace quantities copper is a heavy metal essential to human life, in excess it causes various diseases, whereby its removal from wastewater is a necessity. Among several reported materials, chitosan is a highly abundant, non-toxic, low-cost, biodegradable polymer, c...


An Opinion on the Removal of Disinfection Byproducts from Drinking Water

Roque, Maria Inês; Gomes, João; Reva, Igor; Valente, Artur J. M.; Simões, Nuno E.; Morais, Paula V.; Durães, Luisa; Martins, Rui C.

Ensuring drinking water quality is a key factor for public health and it is especially important given the increase in industrialization. Its quality is ensured by a water treatment process that includes a disinfection stage, mainly involving chlorination. However, by applying this disinfection method, unwanted disinfection byproducts (DBPs) are formed. These compounds have, in general, a negative impact on hum...


Crafting and Analyzing Multi-Structured Aramid Materials and Their Pyrolytic Tr...

Trigo-López, Miriam; Miguel, Álvaro; García, José M; Mendía, Aránzazu; Fernández Ruiz, Virginia; Valente, Artur J. M.; Vallejos, Saul

Gradient porous materials, particularly carbon-based materials, hold immense potential in the fields of batteries, energy storage, electrocatalysis, and sensing, among others, by synergistically combining the attributes associated with each pore size within a unified structural framework. In this study, we developed a gradient porous aramid (GP-Aramid) by incorporating cellulose acetate as a porosity promoter i...


Luminescent Papers with Asymmetric Complexes of Eu(III) and Tb(III) in Polymeri...

Aguado, Roberto J; Gomes, Beatriz O.; Durães, Luisa; Valente, Artur J. M.

Complexes of lanthanide ions, such as Eu(III) (red light emission) and Tb(III) (green light emission), with proper ligands can be highly luminescent and color-tunable, also attaining yellow and orange emission under UV radiation. The ligands employed in this work were poly(sodium acrylate), working as polymeric matrix, and 1,10-phenanthroline, taking advantage of its antenna effect. Possibilities of color displ...


106 Results

Queried text

Refine Results

Author





















Date





















Document Type



Funding



Access rights




Resource







Subject