Combining experimental data with statistical methods to evaluate hydrolyzed reactive dye removal by α-Fe2 O3 in a cellulose-based membrane Mónica A. Silva, Efres Belmonte-Reche, Maria T. P. de Amorim Fibers, 2021 Water contaminated with toxic dyes poses serious problems for human health and environmental ecosystems. Unfixed reactive dyes and their hydrolyzed form are soluble in water, thus, their removal is particularly challenging. Among the different methodologies, adsorption is probably the most common since it is easy to handle and has a low cost. Here, the removal by adsorption of hydrolyzed Reactive Black 5 (hydRB5) from a model wastewater through cellulose acetate/hematite membranes (CA/α-Fe2O3), designated as M1, M2 and M3, was performed. The pristine cellulose acetate membrane (CA) was designated as M0. Toward understanding the adsorption mechanism of hydRB5 on membranes, the rate of adsorption and maximum value of the adsorption capacity were evaluated using kinetic and isothermal studies, respectively. The results showed that the adsorption mechanism follows pseudo-first-order kinetics, and data are best fitted by the Langmuir isotherm method with a maximum adsorption capacity of 105.26 mg g−1 in pH~7. Furthermore, these membranes can be also regenerated by washing with NaOH and NaCl solutions, and the regeneration efficiency remains effective over five cycles. To complete the work, two statistical models were applied, an Analysis of Variance (ANOVA) and a Response Surface Methodology (RSM). The optimum value found is located in the usable region, and the experimental validation shows good agreement between the predicted optimum values and the experimental data. These composite membranes are also good candidates for the adsorption of other pollutants, even at industrial scale, due to their effective regeneration process and low production costs.
Preparation and characterization of poly(urethane–urea) microcapsules containing limonene. Kinetic analysis Mónica Silva, Isabel Martins, Filomena Barreiro, Madalena Dias, Alírio E. Rodrigues International Journal of Polymer Analysis and Characterization, 2017 The synthesis of poly(urethane–urea) shells (PUU) using poly(ethylene glycols) of different molecular weights and methylene-bis(4-cyclohexylisocyanate) was performed for the microencapsulation of limonene, using a step-growth polymerization process. The obtained microcapsules were structurally characterized by dynamic light scattering, optical microscopy, scanning electron microscopy, Fourier transform infrared spectroscopy, and thermogravimetric analysis. The results showed that the core–shell microcapsules had spherical shape, a mean diameter in between 10 and 20 µm, and characteristic urethane-urea bonds. Furthermore, the molecular weight of polyol influences the entrapment efficiency, which ranged from 38 to 55%. The release data were analyzed by applying the Korsmeyer–Peppas model.
Functionalized textiles with PUU/limonene microcapsules: effect of finishing methods on fragrance release Mónica Silva, Isabel M. Martins, Maria F. Barreiro, Madalena M. Dias, Alírio E. Rodrigues Journal of the Textile Institute, 2017 The majority of the commercially available microencapsulated fragrance systems with interest for textile applications are based on phenol–formaldehyde/melamine–formaldehyde resins. Recognized human health problems concerning formaldehyde emissions led to the use of poly(urethane–urea) (PUU) systems. In this work, fabrics were impregnated with PUU microcapsules containing limonene produced by interfacial polymerization. To aid the microcapsule impregnation, a specific binder was used followed by a drying and thermofixation process. The textiles were then subjected to abrasion and dry cleaning tests. Fragrance release was analysed for different binder to microcapsule ratios. SEM images of the impregnated samples indicate good adhesion of the microcapsules to the fabric fibres, but some capsule breakage was observed. Fragrance release tests were followed by GC–FID–HS and showed good resistance to abrasion tests with 30% of the initial limonene detected after 9000 abrasion cycles. A lower resistance was observed for the dry cleaning tests, although 20% of the limonene was still present after five dry cleaning cycles.
Reusable MCM-41 immobilized Rh(I) hydroformylation catalysts built on binaphthyl-based phosphoramidite and phosphite ligands César A. Henriques, Fábio M. S. Rodrigues, Rui M. B. Carrilho, Mónica Silva, Auguste Fernandes, M. Filipa Ribeiro, Mariette M. Pereira Current Organic Chemistry, 2016 The immobilization of Rh/phosphorus complexes in MCM-41 was performed using two different methodologies. The first synthetic strategy was based on the covalent attachment of a new binaphthyl-based phosphoramidite ligand through a trimethoxysilyl linkage, followed by its complexation with the rhodium(I) precursor Rh(CO)2(acac). The resulting heterogeneized Rh(I)/phosphoramidite complex was characterized by FT-IR, N2 adsorption and TG-DSC techniques, which indicated its effective bonding to the mesoporous material. A second approach was based on the physical adsorption of Rh(CO)2(acac) in MCM-41, followed by addition of tris[(R)-2'-(benzyloxy)-1,1'-binaphthyl-2- yl]phosphite, to generate in situ a Rh(I)/phosphite complex, whose rhodium content was determined by chemical analysis (ICP). The two hybrid materials were applied as catalysts in styrene hydroformylation, where both achieved high conversions and regioselectivity for the branched aldehyde, under moderate reaction conditions. The covalent immobilization strategy allowed the reutilization of the Rh/phosphoramidite catalyst, without loss of activity after four runs, while the physically adsorbed Rh/phosphite catalyst lost most of its activity, with occurrence of rhodium leaching. Keywords: Binaphthyl, phosphoramidite, phosphite, rhodium, covalent immobilization, MCM-41, supported catalyst, heterogeneous catalysis, hydroformylation, FT-IR, N2-adsorption, thermogravimetry.
Synthesis, structure, and spectral and electrochemical properties of chromium(iii) tris-(8-hydroxyquinolinate) Ana R. Freitas, Mónica Silva, M. Luísa Ramos, Licínia L. G. Justino, Sofia M. Fonseca, Madalina M. Barsan, Christopher M. A. Brett, M. Ramos Silva, Hugh D. Burrows Dalton Transactions, 2015 Having the HOMO of chromium(iii) tris-(8-hydroxyquinolinate) mainly on metal 3d orbitals and the LUMO on the ligand leads to increased electrochemical stability.
A Road Map to Next Generation Electric Work Class ROV: Market Drivers, Design, Reliability, and Testing N Rouge, M Silva, G Boyle, C Leon Offshore Technology Conference, D021S026R002 , 2026 2026
Detecting Fin Whale Calls from Ocean-Bottom Seismometer Data with Deep Learning J Japnanto, A Saoulis, M Romagosa, R Leitão, MA Silva, M Graham, ... EGU26 , 2026 2026
Vulnerability of marine megafauna to global at‐sea anthropogenic threats M VanCompernolle, J Morris, HJ Calich, JP Rodríguez, SA Marley, ... Conservation biology 40 (1), e70147 , 2026 2026 Citations: 3
Population Genomics and the Environmental Drivers of Population Structure in a Cosmopolitan Marine Predator, Tursiops truncatus DM Moore, AE Moura, A Natoli, E Papale, EG Cunningham, MA Silva, ... Molecular ecology 34 (24), e70182 , 2025 2025 Citations: 1
124-PREDICTORS OF RECENT STIS AND HEPATITIS TESTING: FINDINGS FROM THE LISBON COHORT OF MSM (2015-2020) MA Silva, MA Leal, MI Rocha, MI Oliveira, LU Veríssimo, MI Plankey, ... Gac Sanit 39 (S2), 11 , 2025 2025
Calcium carbonate production by the massive coral Mussismilia hispida in subtropical reefs of the Southwestern Atlantic LS Oliveira, FHC Sanches, MA Silva, PAS Longo, IRA Laurino, ... Marine Environmental Research 209, 107218 , 2025 2025 Citations: 1
Contribution of mesopelagic fish and cephalopods to the diet of rorquals ( Balaenoptera spp ) and sperm whales ( Physeter macrocephalus ) beyond their feeding … C Claver, LG de Amézaga, I Mendibil, O Canals, R Prieto, I Cascão, ... bioRxiv, 2025.03. 14.643344 , 2025 2025 Citations: 1
FAMÍLIAS, POLÍTICA DE ASSISTÊNCIA SOCIAL E PODER JUDICIÁRIO: A INVISIBILIDADE DAS DESIGUALDADES DE CLASSE, DE GÊNERO E ÉTNICO-RACIAL C BRAGA, SM TEIXEIRA, M SILVA, LA SILVA, G BARACHO DE POLÍTICAS PÚBLICAS Учредители: Universidade Federal do Maranhao eISSN … , 2025 2025
Estudo da influência da covariância entre os efeitos direto e materno nas avaliações genéticas das características de crescimento em rebanho Tabapuã. SHA RIBEIRO, JCC PEREIRA, RS VERNEQUE, MA SILVA, ... 2025
Infecção dermonecrótica generalizada por Staphylococcus hyicus em cão: Relato de caso MP da Silva Carvalho, KJ Almeiada, J de Oliveira Siqueira, FJ Souto, ... Pubvet 18 (12), e1705-e1705 , 2024 2024
Rugby Union Match Injury Surveillance in Portuguese Top-Tier Competition L NPdS, AM Cruz-Ferreira, TL DF, MA Silva, LM Santiago 2024
Vascular units as advanced living materials for bottom-up engineering of perfusable 3D microvascular networks ID Orge, HN Pinto, MA Silva, SJ Bidarra, SA Ferreira, I Calejo, ... Bioactive Materials 38, 499-511 , 2024 2024 Citations: 23
Between Delusions and Borders: Diagnosing Delusional Disorder in Migratory Contexts LM Carrasqueira, MD Pereira, I Marques, M Silva, C Laureano European Psychiatry 67 (S1), S613-S613 , 2024 2024
Baleen whale navigation in astronomically referenced magnetic coordinates T Horton, ND Hauser, A Zerbini, D Palacios, A Rikardsen, C Lydersen, ... Under Review at Nature Portfolio. , 2024 2024
Cloning and molecular characterization of RpgAVR1 and RpgAVR2 avirulence genes from Ramulariopsis pseudoglycines, main etiological agent of ramularia … MAD Silva, DF Milanesi, JMC Lourenco, VC Holtman, LZ Goulart, ... MOLECULAR PLANT-MICROBE INTERACTIONS 37 (5), 63-63 , 2024 2024
Design of experiments for increasing of methylene blue adsorption onto cellulose derivative-based composites MA Silva Sustainable Chemical Engineering, 227-251 , 2024 2024 Citations: 1
POSTHARVEST LOSSES OF FRUITS AND VEGETABLES IN DIFFERENT MICROREGIONS OF MARANHÃO, BRAZIL L FERREIRA, A FERREIRA, D AMORIM, M SILVA, LR SILVA, ... IBERO-AMERICANA DE CIÊNCIAS AMBIENTAIS Учредители: Companhia Brasileira de … , 2024 2024
THE SUSTAINABILITY OF REGIONS AS A CHALLENGE FOR HIGHER EDUCATION-THE PROBLEM-SOLVING METHODOLOGY IN TEACHING CULTURAL MANAGEMENT. THE CASE OF THE'PORTO COMERCIAL DE CAMBRES' PA Marques dos Santos, D Santos, M Lopes, M Silva 2024
FIBROMATOSE GENGIVAL HEREDITÁRIA. TRATAMENTO USANDO DUAS TÉCNICAS CIRÚRGICAS: RELATO DE CASO L AMBRÓSIO, M ALBIERO, A BERSI, B VIEIRA, NP FOGAÇA, M SILVA, ... BRAZILIAN JOURNAL OF PERIODONTOLOGY Учредители: Dental Press International … , 2024 2024
JOGO DIDÁTICO “TRÊS PISTAS EM AÇÃO”: DESVENDANDO OS SISTEMAS” PARA O ENSINO INTEGRADO DOS SISTEMAS FISIOLÓGICOS M SILVA, KVM SILVA ARQUIVOS DO MUDI Учредители: Universidade Estadual de Maringa 28 (2), 01-14 , 2024 2024
MOST CITED SCHOLAR PUBLICATIONS
Modeling the potential distribution and richness of cetaceans in the Azores from fisheries observer program data M Tobeña, R Prieto, M Machete, MA Silva Frontiers in Marine Science 3, 202 , 2016 2016 Citations: 112
Biocompatibility evaluation of DLC-coated Si3N4 substrates for biomedical applications E Salgueiredo, M Vila, MA Silva, MA Lopes, JD Santos, FM Costa, ... Diamond and related Materials 17 (4-5), 878-881 , 2008 2008 Citations: 109
Styrene oxidation by manganese Schiff base complexes encapsulated in zeolite structures M Silva, C Freire, B de Castro, JL Figueiredo Journal of Molecular Catalysis A: Chemical 258 (1-2), 327-333 , 2006 2006 Citations: 105
Performance of new gellan gum hydrogels combined with human articular chondrocytes for cartilage regeneration when subcutaneously implanted in nude mice JT Oliveira, TC Santos, L Martins, MA Silva, AP Marques, AG Castro, ... Journal of tissue engineering and regenerative medicine 3 (7), 493-500 , 2009 2009 Citations: 87
Immobilization of halogenated porphyrins and their copper complexes in MCM-41. Environmentally friendly photocatalysts for the degradation of pesticides M Silva, ME Azenha, M Pereira, et al. Applied Catalysis B: Environmental 100 (1), 1-9 , 2010 2010 Citations: 85
Inorganic helping organic: Recent advances in catalytic heterogeneous oxidations by immobilised tetrapyrrolic macrocycles in micro and mesoporous supports MJF Calvete, M Silva, MM Pereira, HD Burrows RSC advances 3 (45), 22774-22789 , 2013 2013 Citations: 80
The Scotian Shelf: An ecological overview for ocean planning. H Breeze, DG Fenton, RJ Rutherford, MA Silva Can. Tech. Rep. Fish. Aquat. Sci./Rapp. Tech. Can. Sci. Halieut. Aquat., 269 , 2002 2002 Citations: 76
Donepezil inhibits acetylcholinesterase via multiple binding modes at room temperature MA Silva, AS Kiametis, W Treptow Journal of Chemical Information and Modeling 60 (7), 3463-3471 , 2020 2020 Citations: 74
Zinc (II) phthalocyanines immobilized in mesoporous silica Al-MCM-41 and their applications in photocatalytic degradation of pesticides M Silva, MJF Calvete, NPF Gonçalves, HD Burrows, M Sarakha, ... Journal of hazardous materials 233, 79-88 , 2012 2012 Citations: 74
Can feeding the broiler breeder improve chick quality and offspring performance? A Chang, J Halley, M Silva Animal Production Science 56 (8), 1254-1262 , 2016 2016 Citations: 62
Estrutura da prática da terapia ocupacional: domínio e processo DGS Carleto, ACA Souza, M Silva, DMC Cruz, VS Andrade Revista Triângulo, 57-147 , 2010 2010 Citations: 62
Encapsulation of copper(II) complexes with pentadentate N3O2 Schiff base ligands derived from acetylacetone in NaX zeolite R Ferreira, M Silva, C Freire, B de Castro, JL Figueiredo Microporous and Mesoporous Materials 28 (2-3), 391-401 , 2000 2000 Citations: 61
Fine-scale genetic structure of bottlenose dolphins, Tursiops truncatus , in Atlantic coastal waters of the Iberian Peninsula R Fernández, MB Santos, GJ Pierce, A Llavona, A López, MA Silva, ... Hydrobiologia 670 (1), 111-125 , 2011 2011 Citations: 60
Desenvolvimento e implementação de um Sistema de Gestão da Qualidade MÂ Silva Lisboa: Universidade de Arveiro , 2009 2009 Citations: 53
Fabrication of pristine-multiwalled carbon nanotubes/cellulose acetate composites for removal of methylene blue MA Silva, L Hilliou, M Pessoa de Amorim Polymer Bulletin , 2019 2019 Citations: 51
Potential acetylcholinesterase inhibitors: molecular docking, molecular dynamics, and in silico prediction AS Kiametis, MA Silva, LAS Romeiro, JBL Martins, R Gargano Journal of molecular modeling 23 (2), 67 , 2017 2017 Citations: 51
Mapa geológico do estado de Minas Gerais CP Pinto, MA Silva Belo Horizonte: Codemig/CPRM , 2014 2014 Citations: 48
Size and ability do matter! Influence of acidity and pore size on the synthesis of hindered halogenated meso-phenyl porphyrins catalysed by porous solid oxides M Silva, A Fernandes, SS Bebiano, MJF Calvete, MF Ribeiro, HD Burrows, ... Chemical Communications 50 (50), 6571-6573 , 2014 2014 Citations: 48
3‐Hydroxy‐3‐methylglutaryl‐coenzyme A lyase deficiency: Initial presentation in a young adult S Reimão, C Morgado, IT Almeida, M Silva, HC Real, J Campos Journal of Inherited Metabolic Disease: Official Journal of the Society for … , 2009 2009 Citations: 48
Efeito da composição genética e de fatores de meio sobre a produção de leite, a duração da lactação e a produção de leite por dia de intervalo de partos de vacas mestiças … JR Glória, JAG Bergmann, RB Reis, MS Coelho, MA Silva Arquivo Brasileiro de Medicina Veterinária e Zootecnia 58, 1139-1148 , 2006 2006 Citations: 46