Article
Chemistry, Multidisciplinary
Valentina Petrelli, Maria Michela Dell'Anna, Piero Mastrorilli, Veronica Viola, Michelina Catauro, Antonio D'Angelo
Summary: Hybrid materials composed of organic and inorganic components at the nanometer or molecular level have been studied for their potential applications in the biological and medical fields. This study focuses on the synthesis and characterization of a sol-gel-derived hybrid material consisting of silica, polyethylene glycol, and the antioxidant flavonoid quercetin. The structural and biological properties of the hybrid systems were investigated by varying the concentrations of quercetin and polyethylene glycol, and results showed a controlled release of quercetin over time, indicating its potential use in drug delivery.
APPLIED SCIENCES-BASEL
(2023)
Article
Polymer Science
Hartina Mohd Yusop, Annur Isma Husna Mohd Ismail, Wan Norfazilah Wan Ismail
Summary: A new biopolymer-silica hybrid material composed of inulin and TEOS was successfully synthesized via sol-gel method for use as an adsorbent. Analysis using FTIR, EDX, FESEM, XRD, BET, and TGA confirmed the strong interaction between inulin and TEOS, optimal morphology and characteristics for absorption properties, mesoporous structure, and thermal stability of the composite material.
Article
Materials Science, Ceramics
Valentin Smeets, Ales Styskalik, Damien P. Debecker
Summary: Sol-gel chemistry tools enable the synthesis of functional materials in a controlled manner, with the use of hybrid heterogeneous catalysts showing promise in enhancing catalytic performance through combinations of inorganic and organic components.
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
(2021)
Article
Biochemistry & Molecular Biology
Ignazio Blanco, Alberta Latteri, Gianluca Cicala, Antonio D'Angelo, Veronica Viola, Vincenzo Arconati, Michelina Catauro
Summary: This paper aims to synthesize a biomaterial usable in the medical field through the sol-gel method. The study evaluates the silica-PEG-quercetin system in relation to different concentrations of PEG and quercetin. FT-IR, SEM, and Kirby-Bauer analyses were performed to evaluate hybrid formation, morphological properties, and the ability to inhibit bacterial growth.
Article
Materials Science, Ceramics
Kazuki Yamamoto, Tomoya Shimoda, Yohei Sato, Toshimi Nakaya, Joji Ohshita, Takahiro Gunji
Summary: In this study, 1,1,1,5,5,5-Hexaethoxy-3,3-dimethyltrisiloxane (QDQ) and its polymer (pQDQ) were synthesized and compared to a copolymer of diethoxy(dimethyl)silane (DEDMS) and tetraethoxysilane (TEOS). The polymer structure and film properties were investigated, and it was found that the arrangement of D and Q units affected the mechanical strength of the gel film.
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
(2022)
Article
Materials Science, Multidisciplinary
Zhen Zhang, Zhifang Fei, Shuang Zhao, Wenhao Wu, Kunfeng Li, Guobing Chen, Zichun Yang
Summary: Researchers have prepared amine in-situ hybrid SiO2 aerogels with hierarchically porous structure, which overcome the limitations of high cost and low CO2 adsorption capacity in silica aerogels. The micropores constructed by the steric hindrance effect of long organic chain from bis[3-(triethoxysilyl)propyl]amine facilitate faster and more uptake of CO2. The obtained aerogels have high amine content, high specific surface area (up to 579.63 m2/g), and high pore volume, resulting in a fascinating CO2 capture ability of 6.57 mmol/g at 273 K, significantly higher than other silica-based aerogels.
Article
Chemistry, Physical
Pengyu Zhang, Xiaotong Yin, Wenyang Li, Liming Feng
Summary: A two-step synthesis method was used to prepare a new hybrid coating with strong hydrophobicity and light transmittance. By controlling the co-hydrolysis time, the octyl content and properties of the coating can be adjusted accordingly.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2021)
Review
Chemistry, Multidisciplinary
Olga A. Kamanina, Evgeniya A. Saverina, Pavel Rybochkin, Vyacheslav A. Arlyapov, Anatoly N. Vereshchagin, Valentine P. Ananikov
Summary: Microorganism-cell-based biohybrid materials have gained significant attention and have been applied in various fields. Sol-gel technology is a preferred technique for creating high-purity organic-inorganic matrices for biocomponent immobilization. This review focuses on the synthesis and application of hybrid sol-gel materials obtained by encapsulating microorganism cells in inorganic matrices. Techniques for increasing microorganism effective time and the potential use of sol-gel hybrid materials in catalysis are discussed.
Article
Chemistry, Inorganic & Nuclear
Hui Dan, Li Chen, Zhen Li, Xinmiao He, Yi Ding
Summary: Amorphous ZrO2 powders were successfully prepared using a novel hydrothermal-assisted sol-gel method. The obtained powders exhibited features of small and uniform particle size, as well as high purity.
INORGANIC CHEMISTRY COMMUNICATIONS
(2022)
Article
Materials Science, Multidisciplinary
Ahmed Ali, Mansour M. Hassan, G. Goda Mohammed, Hossam Youssef Abdel El-Hamid, Hilmy Awad
Summary: Nano-composites ceramic of (Al2O3/BaTiO3) were successfully fabricated by Sol. Gel. technique. The addition of Al2O3 changed the structure and particle size of BaTiO3, resulting in uniform distribution of nano-sized particles. The infrared, Raman, and UV/Vis spectroscopy revealed distinct peaks and splits for Al2O3/BaTiO3. Moreover, Al2O3 exhibited a significant effect on the dielectric properties of the composites.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Materials Science, Multidisciplinary
Z. A. A. Halim, M. A. Mat Yajid, N. Ahmad
Summary: The thermal degradation of mesoporous hydrated silica (MHS), mesoporous silica (MS), and alumina trihydrate (ATH) hybrid systems for flame retardant materials was investigated. The results show that MHS-ATH has higher thermal stability and a wider range of water release temperature, improving the flame retardancy effect compared to ATH.
Article
Materials Science, Multidisciplinary
Zhen Zhang, Shuang Zhao, Kunfeng Li, Zhifang Fei, Guobing Chen, Peng Zhang, Zichun Yang
Summary: In this study, hydrophobic and low-density silica-based gels were prepared using a self-catalyzed gelling process and ambient drying method. These gels have potential to be used as alternatives in cryogenic applications due to their reversible deformation, high failure strength, and low thermal conductivity at low temperatures.
Article
Chemistry, Applied
Barbara Popanda, Jaroslaw Grolik, Wojciech Gieszczyk, Marcin Sroda
Summary: This study prepared a series of sol-gel hybrids using different acids, bases, solvents, and luminophore concentrations to immobilize zinc phthalocyanine. The immobilization was achieved by coordinating the zinc phthalocyanine with an isonicotinamide substituted by alkoxysilane. Hybrid materials of variable hydrophilicity were obtained by using siloxane precursors to optimize the conditions for phthalocyanine immobilization. The optical properties and photostability of the hybrids were investigated.
Article
Materials Science, Ceramics
Nina Velikova, Ivanka Spassova
Summary: Bifunctionalized mesoporous silica materials were successfully prepared by altering the sequence of addition of silanols, leading to improved texture and CO2 sorption capacity. The type of silsesquioxane precursors and the presence of isocyanurate groups also significantly influenced the material's texture, morphology, and CO2 sorption properties.
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
(2021)
Review
Materials Science, Ceramics
Leandro Trupp, Maria Claudia Marchi, Beatriz C. Barja
Summary: Research on lanthanide-based luminescent hybrid silica materials has grown significantly in recent decades, with the sol-gel technique being one of the most powerful methods for achieving this goal. This review focuses on the commonly used strategies for inserting luminescent lanthanide(III) complexes into a silica host and their potential applications.
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
(2022)
Article
Engineering, Biomedical
Nathalie Barroca, Liam J. Collins, Brian M. Rodriguez, M. Helena V. Fernandes, Paula M. Vilarinho
Summary: This article reports the fabrication of poly(L-lactic acid) (PLLA) thin films with mechanical stress-responsive behavior. Local electrical polarization was generated by applying mechanical stress using an AFM tip, and the magnitude of polarization could be manipulated by varying the thickness or crystallization state of the films. These mechanically responsive PLLA films exhibit potential for energy harvesting, sensor applications, and physiological force sensing.
ACTA BIOMATERIALIA
(2022)
Article
Engineering, Biomedical
A. L. Alves, J. Costa-Gouveia, J. Vieira de castro, C. G. Sotelo, J. A. Vazquez, R. I. Perez-Martin, E. Torrado, N. Neves, R. L. Reis, A. G. Castro, T. H. Silva
Summary: This study evaluated the immune response to collagen and gelatin extracted from blue shark and codfish. The results demonstrated that these materials can induce a macrophage phenotype related to anti-inflammatory resolution and act as immuno-modulators and anti-inflammatory inducible materials.
ACTA BIOMATERIALIA
(2022)
Article
Biochemistry & Molecular Biology
Sonia Andre, Morgane Picard, Renaud Cezar, Florence Roux-Dalvai, Aurelie Alleaume-Butaux, Calaiselvy Soundaramourty, Andre Santa Cruz, Ana Mendes-Frias, Clarisse Gotti, Mickael Leclercq, Alexandre Nicolas, Alexandra Tauzin, Alexandre Carvalho, Carlos Capela, Jorge Pedrosa, Antonio Gil Castro, Lucy Kundura, Paul Loubet, Albert Sotto, Laurent Muller, Jean-Yves Lefrant, Claire Roger, Pierre-Geraud Claret, Sandra Duvnjak, Tu-Anh Tran, Gina Racine, Ouafa Zghidi-Abouzid, Pierre Nioche, Ricardo Silvestre, Arnaud Droit, Fabrizio Mammano, Pierre Corbeau, Jerome Estaquier
Summary: By comparing COVID-19 patients with healthy donors, the study found a strong correlation between T cell apoptosis and lymphopenia in severe cases. The plasma levels of soluble FasL (sFasL) and T cell surface expression of Fas/CD95 were positively correlated with T cell death and CD4 T cell counts. The study also identified modulations in the Bcl-2 family and demonstrated the potential of a pan-caspase inhibitor, Q-VD, to prevent T cell apoptosis and enhance Th1 transcripts.
CELL DEATH AND DIFFERENTIATION
(2022)
Review
Food Science & Technology
Joana Madureira, Fernanda M. A. Margaca, Celestino Santos-Buelga, Isabel C. F. R. Ferreira, Sandra Cabo Verde, Lillian Barros
Summary: Although wastes generated during the olive oil extraction process have a negative impact on the environment, they contain bioactive compounds that have significant health benefits. These compounds, such as hydroxytyrosol and oleuropein, can be used as food antioxidants, nutraceutical and cosmetic ingredients, and also possess antimicrobial, anticancer, and anti-inflammatory properties. Collaboration between industries and researchers is essential to create strategies to utilize these byproducts while ensuring environmental sustainability.
COMPREHENSIVE REVIEWS IN FOOD SCIENCE AND FOOD SAFETY
(2022)
Article
Materials Science, Ceramics
Manuel Fellipe Rodrigues Pais Alves, Bruno Galvao Simba, Maria Helena Figueira Vaz Fernandes, Carlos Nelson Elias, Jose Eduardo Vasconcellos Amarante, Claudinei dos Santos
Summary: In dental clinics, it is common to perform small fitting adjustments in dentures using a micro-grinding tool. However, this can increase surface roughness and cause microcracks. A post-finishing heat treatment at 840 degrees C for 5 minutes was found to significantly improve the bending strength and reduce surface roughness of LD dental glass-ceramics, thus increasing the lifespan of dental prostheses.
CERAMICS INTERNATIONAL
(2022)
Article
Immunology
Catarina M. Ferreira, Consuelo Micheli, Palmira Barreira-Silva, Ana Margarida Barbosa, Mariana Resende, Manuel Vilanova, Ricardo Silvestre, Cristina Cunha, Agostinho Carvalho, Fernando Rodrigues, Margarida Correia-Neves, Antonio Gil Castro, Egidio Torrado
Summary: The control of tuberculosis relies on the rapid activation of protective CD4(+) T-cell responses in the lungs. The immunomodulatory cytokine IL-10 hinders this response by impairing the migratory capacity of CD4(+) T cells. However, BCG vaccination can prevent the immunosuppressive effects of IL-10 and accelerate the CD4(+) T-cell response, leading to better control of tuberculosis infection.
FRONTIERS IN IMMUNOLOGY
(2022)
Article
Materials Science, Ceramics
L. S. O. Pires, J. Luis, M. H. Fernandes, M. Oliveira
Summary: Porcelain pastes were studied for their use in additive manufacturing, specifically in the robocasting technique. The morphological and thermal characteristics of the material were evaluated, along with the rheology and electrical potential of the ceramic particles. Shifting the pH to acidic conditions led to changes in surface charge and increased viscosity, which was utilized to optimize the paste's rheological behavior. The study also found that small variations in pressure and speed affected the dimensional accuracy of the printed models, highlighting the disruptive potential of porcelain robocasting in customized ceramic product production.
CERAMICS INTERNATIONAL
(2023)
Article
Dentistry, Oral Surgery & Medicine
Ines O. Baptista, M. F. R. P. Alves, S. Ferreira, C. Santos, S. I. Vieira, M. H. V. Fernandes
Summary: This study investigated the effects of incorporating an antibacterial nanoceramic (AgVO3) on the properties of a restorative dental glass-ceramic. The results showed that adding 8-AgVO3 to the glass-ceramic improved its antibacterial potential but also increased its chemical solubility.
Article
Engineering, Biomedical
Andreia Leal Pereira, Angela Semitela, Andre F. Girao, Antonio Completo, Paula A. A. P. Marques, Samuel Guieu, Maria Helena V. Fernandes
Summary: One tissue engineering strategy involves creating scaffolds that resemble the extracellular matrix (ECM) to aid tissue regeneration. In this study, a technique called thermally-induced self-agglomeration (TISA) was used to convert two-dimensional electrospun membranes into highly functional three-dimensional porous-fibrous systems, overcoming the limitations of cell infiltration and proliferation. By electrospinning polycaprolactone/chitosan blends and adjusting the amount of chitosan, the researchers were able to modulate the properties of the resulting 3D nanofibrous scaffolds, leading to porous constructs with distinct morphologic and mechanical features. Viability and proliferation studies with adult human chondrocytes confirmed the biocompatibility of the scaffolds, making them promising for musculoskeletal tissue engineering applications, particularly cartilage repair.
JOURNAL OF BIOMEDICAL MATERIALS RESEARCH PART A
(2023)
Article
Materials Science, Multidisciplinary
Tania S. S. Carvalho, Nilza Ribeiro, Paula M. C. Torres, Jose C. Almeida, Joao H. Belo, J. P. Araujo, Antonio Ramos, Monica Oliveira, Susana M. Olhero
Summary: This study aims to enhance the magnetic susceptibility of PLA-based biocomposites by incorporating 5 wt% of iron doped biphasic calcium phosphate (FeBCP) powders into the PLA matrix, avoiding the use of magnetic nanoparticles with unclear long-term side effects. The FeBCP composites showed ferromagnetic-like behavior, superior tensile strength, and cytocompatibility compared to PLA or non-doped composites. This proof of concept opens up possibilities for future development of biomedical applications utilizing magnetic PLA-based biocomposites.
MATERIALS CHEMISTRY AND PHYSICS
(2023)
Article
Multidisciplinary Sciences
Andre Santa Cruz, Ana Mendes-Frias, Marne Azarias-da-Silva, Sonia Andre, Ana Isabel Oliveira, Olga Pires, Marta Mendes, Barbara Oliveira, Marta Braga, Joana Rita Lopes, Rui Domingues, Ricardo Costa, Luis Neves Silva, Ana Rita Matos, Cristina Angela, Patricio Costa, Alexandre Carvalho, Carlos Capela, Jorge Pedrosa, Antonio Gil Castro, Jerome Estaquier, Ricardo Silvestre
Summary: Based on our study, individuals with post-acute sequelae SARS-CoV-2 (PASC) exhibit persisting immunological dysfunction, including changes in mucosal immune parameters, redistribution of mucosal CD8(+)beta 7Integrin(+) T cells, and IgA, indicating potential viral persistence and mucosal involvement in the etiopathology of PASC at six months following infection.
NATURE COMMUNICATIONS
(2023)
Article
Chemistry, Multidisciplinary
S. A. R. Coelho, J. Kniep, N. Barroca, J. C. Almeida, M. H. V. Fernandes
Summary: Tissue regeneration is a critical issue that requires the development of innovative scaffolds to mimic the natural extracellular matrix. Hybrid biomaterials based on biodegradable polymers and bioactive glasses show promise for tissue engineering, with tailored properties and controlled degradation. This research aimed to develop a hybrid nanofibrous membrane composed of a synthetic polymeric matrix and boron and calcium silicate glass through electrospinning, using non-aqueous and green fabrication methods.
MATERIALS TODAY CHEMISTRY
(2023)
Meeting Abstract
Endocrinology & Metabolism
F. Zamboni, A. M. Barbosa, I. F. Cengiz, A. G. Castro, M. J. Oliveira, R. L. Reis, M. Collins
DIABETES RESEARCH AND CLINICAL PRACTICE
(2022)
Article
Engineering, Biomedical
Daniel B. Rodrigues, Helena R. Moreira, Mariana T. Cerqueira, Alexandra P. Marques, Antonio G. Castro, Rui L. Reis, Rogerio P. Pirraco
Summary: The highly tailorable T cell activator system platform based on GG nanoparticles developed in this study can successfully expand and re-educate T cells, with potential cytotoxicity for application in cancer therapy.
BIOMATERIALS RESEARCH
(2022)
Article
Materials Science, Multidisciplinary
Deyong Zheng, Huihui Jin, Yucong Liao, Pengxia Ji
Summary: In this study, a highly stable and efficient catalyst, fluorine-doped Co3O4 (F-Co3O4), was developed for hydrogen production by water electrolysis. The F-Co3O4 catalyst exhibited a remarkable reduction in overpotential and demonstrated excellent stability for over 100 hours.
Article
Materials Science, Multidisciplinary
Ziwen Lv, Jintao Wang, Fengyi Wang, Jianqiang Wang, Fuquan Li, Hongtao Chen
Summary: Adding Cu6Sn5 nano particles can effectively inhibit the overgrowth of intermetallic compounds at the interfaces of solder joints in electronic devices, providing a solution to this issue. A new growth mechanism of intermetallic compounds at the interfaces was identified.
Article
Materials Science, Multidisciplinary
Jun Wang, Jiawei Chen, Wanru Liao, Fangyang Liu, Min Liu, Liangxing Jiang
Summary: A BiOI/AgI/Ag plasmonic heterostructure photocathode was successfully designed through electrodeposition, ion-exchange, and illumination methods. This photocathode exhibits superior performance in photoelectrochemical water splitting.
Article
Materials Science, Multidisciplinary
Xiaoxiao Liu, Xianxian Zhou, Xiaotao Ma, Qinbo Yuan, Shibin Liu
Summary: In this study, the authors propose a method to accelerate the reaction of polysulfides in lithium-sulfur batteries using a Ni@OC Mott-Schottky heterojunction as a catalyst. The experimental results demonstrate that the charge redistribution at the Ni@OC interface accelerates electron transfer and enhances catalytic activity, leading to improved reaction kinetics and battery performance.
Article
Materials Science, Multidisciplinary
Dayou Ma, Mohammad Rezasefat, Joziel Aparecido da Cruz, Sandro Campos Amico, Marco Giglio, Andrea Manes
Summary: The matrix has a significant effect on the impact resistance of composite materials. Replacing a brittle polymer with a more flexible one can improve impact resistance, but it poses challenges to standard testing methods. This study designs a new fixture for testing the low-velocity impact of soft composites and investigates the effect of the fixture on the mechanical performance.
Article
Materials Science, Multidisciplinary
Lingchang Wang, Qihang Yang, Huzhen Li, Ming Wei, Qian Wang, Zhenzhong Hu, Mengmeng Zhen
Summary: Bronze titanium dioxide (TiO2(B)) is a promising anode material for lithium-ion batteries due to its high specific capacity. However, its practical applications are hindered by poor conductivity and limited electrochemical kinetics. In this study, TiO2(B)-carbon nanosheets heterostructures are synthesized to enhance the cycling performance and rate capability of TiO2(B).
Article
Materials Science, Multidisciplinary
Atul Thakur, Ritesh Verma, Ankush Chauhan, Fayu Wan, Preeti Thakur
Summary: In this study, BaFe12O19 and BaFe12O19: Epoxy (50:50) nanocomposites were synthesized using the co-precipitation method. The structural information and material properties, such as crystallite size and electrical conductivity, were characterized by XRD, FESEM, EDX, and TEM techniques.
Article
Materials Science, Multidisciplinary
Jingyu Wu, Xinyan Ma, Yong Yang
Summary: A well-defined CoS2@NC(CS-500) hierarchical binder-free catalyst cathode is constructed through in-situ grown of ZIF-67 on carbon cloth and high-temperature carbonization. The cathode shows excellent reaction kinetics and electrochemical performance, providing inspiration for developing advanced Li-CO2 battery catalysts.
Article
Materials Science, Multidisciplinary
Svetlana M. Posokhova, Vladimir A. Morozov, Kirill N. Boldyrev, Dina Deyneko, Erzhena T. Pavlova, Bogdan I. Lazoryak
Summary: This study explores the impact of synthesis method and composition on the structure and luminescence properties of K5Eu1-xHox(MoO4)4 with the palmierite-type matrix. The co-doping of Eu3+ and Ho3+ ions plays a critical role in manipulating charge transfer and luminescence efficiency in the visible and infrared regions.
Article
Materials Science, Multidisciplinary
Jian Wang, Yeting Tao, Jingsheng Wang, Youtian Tao
Summary: A new electron-transport material iTPyBI-CN is developed through non-catalytic C-N coupling reaction. It exhibits better electroluminescence efficiency in organic light-emitting diodes compared to the commercial material TPBI, due to its twisted geometry and higher energy levels.
Article
Materials Science, Multidisciplinary
Tao Zhu, Feng Huang, Shuo Li, Yang Zhou
Summary: This article combines XRD analysis and microscopic structural observation to investigate the changes in limestone after high-temperature treatment. It finds that 500 degrees C is the critical temperature for crystalline and spatial arrangement changes in limestone, and the thermal conductivity, specific heat capacity, and heat storage coefficient gradually decrease after thermal treatment.
Article
Materials Science, Multidisciplinary
Muhammad Haekal Habibie, Fransiska Sri Herwahyu Krismastuti, Abdi Wira Septama, Faiza Maryani, Vivi Fauzia
Summary: This study focuses on the synthesis of zinc oxide nanostructure from zinc recovered from galvanization ash and highlights its potential as a sustainable source of zinc and as an antibacterial agent.
Article
Materials Science, Multidisciplinary
Jingyi Li, Yixin Xing, Wei Gu, Shousi Lu
Summary: In this study, PC@CaP microparticles were fabricated using biomimetic mineralization. The results showed that under environmental stress, PC@CaP exhibited improved stability and antioxidative activity, indicating its potential use in high-added value fields.
Article
Materials Science, Multidisciplinary
Yan Liu, Shunyou Chen
Summary: In this study, TNTs were used as a drug carrier and modified with ZIF-8 and silk fibroin to obtain a new drug loading platform. The results showed that this drug-loaded platform had a good drug release effect in vitro and could promote cell proliferation and osteogenic differentiation.
Article
Materials Science, Multidisciplinary
Chunhui Zhu, Wentao Wang, Qing Zhen, Xinning Huang, Shixin Li, Shaochang Wang, Xiaoping Ma, Xiaoxia Liu, Yalong Jiao, Kai Sun, Zhuangzhi Li, Huaixin Yang, Jianqi Li
Summary: A type of stacking fault is revealed in e-InSe crystal, which is associated with a small stacking-fault energy and shows exceptional plasticity.
