Article
Materials Science, Ceramics
Jose Rodrigo Fernandez Caresani, Alexsandro Dallegrave, Joao Henrique Zimnoch Dos Santos
Summary: The study found that the nature of organosilanes and the type of encapsulated enzymes significantly affect biocatalytic activity, with organosilanes containing amine groups generally leading to lower conversion rates. Encapsulating beta-amylase resulted in increased biocatalytic activity, and the properties of organosilanes also influenced the porosity of the matrix and the production of reducing sugars.
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
(2021)
Article
Acoustics
Youwen Tian, Wei Luo, Yedan Wang, Yun Yu, Wanzhen Huang, Haodong Tang, Yifan Zheng, Zongjian Liu
Summary: The ultrasound-assisted, interface-confined sol-gel method proposed in this study allows for fast encapsulation of metal microparticles in SiO2, resulting in a continuous and uniform SiO2 layer. The key steps for success include ensuring the liquid films stay attached to the particle surfaces, using proper amounts of alcohol and water, and selecting an appropriate ultrasonic power level.
ULTRASONICS SONOCHEMISTRY
(2021)
Article
Polymer Science
David del-Bosque, Josefina Vila-Crespo, Violeta Ruiperez, Encarnacion Fernandez-Fernandez, Jose Manuel Rodriguez-Nogales
Summary: Higher temperatures due to climate change are increasing sugar production in grapes, resulting in more alcoholic wines. The use of glucose oxidase (GOX) and catalase (CAT) in grape must is an effective biotechnological approach to produce reduced-alcohol wines. GOX and CAT were successfully co-immobilized in silica-calcium-alginate hydrogel capsules, demonstrating good operational stability and a significant reduction in glucose content.
Article
Chemistry, Multidisciplinary
Thomas Dippong, Iosif Grigore Deac, Oana Cadar, Erika Andrea Levei
Summary: The presence of SiO2 embedding affects the structure, morphology, and magnetic properties of (Zn0.6Mn0.4Fe2O4)(delta)(SiO2)(100-delta) nanoparticles synthesized by sol-gel method. The variation in crystallite size plays a significant role in determining the magnetic behavior of the particles.
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
Multidisciplinary Sciences
Yiyuan Zhang, Zhandong Huang, Zheren Cai, Yuqing Ye, Zheng Li, Feifei Qin, Junfeng Xiao, Dongxing Zhang, Qiuquan Guo, Yanlin Song, Jun Yang
Summary: This study proposes a magnetic-actuated capillary container for creating three-dimensional fluid interfaces with pre-designed shapes and sizes in different media. By adjusting the structure of the container and magnetic field, various motion modes can be achieved, demonstrating feasibility in different fluids.
Article
Nanoscience & Nanotechnology
Olga A. Kamanina, Elizaveta A. Lantsova, Pavel V. Rybochkin, Vyacheslav A. Arlyapov, Evgeniya A. Saverina, Natalia S. Kulikovskaya, Alexander M. Perepukhov, Anatoly N. Vereshchagin, Valentine P. Ananikov
Summary: This study presents a novel hybrid biocatalyst design that combines the individual efficiency of microorganisms while avoiding negative interactions between them. The immobilized microorganism mixture showed excellent performance in determining the biochemical oxygen demand in real water samples.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Materials Science, Ceramics
Jingang Guo, Hui Zhang, Yule Li, Shengan Yang, Junfeng Li, Qingming Chen
Summary: The effects of different substitution elements on the structure, electrical transport properties, and magnetic properties of La0.64RE0.06Ca0.3MnO3 polycrystalline ceramics were analyzed. The results showed that as the ionic radius of the substitution elements decreases, the cell volume decreases, the grain size increases, the peak resistivity increases exponentially, the metal-insulator transition temperature decreases linearly, the temperature coefficient of resistance first decreases and then increases, and the magnetoresistance gradually increases.
CERAMICS INTERNATIONAL
(2022)
Article
Materials Science, Ceramics
R. Pena-Garcia, Y. Guerra, S. Castro-Lopes, Y. M. Camejo, Joao M. Soares, A. Franco, E. Padron-Hernandez, M. Cabrera-Baez
Summary: This study analyzed the effects of Sr and Ni doping on the morphological, electronic, and magnetic properties of ZnO nanoparticles, revealing differences in particle shapes, lattice structure changes, and magnetic contributions.
CERAMICS INTERNATIONAL
(2021)
Article
Materials Science, Ceramics
Ananthakrishnan Nitu, Ananthakrishnan Srinivasan
Summary: Magnetic interactions in sol-gel-derived bioactive magnetic glass-ceramics (MGCs) were studied using EPR, magnetic susceptibility, and magnetization techniques. The intensity and linewidth of resonance absorptions showed composition dependence. Dipolar interaction dominated in MGC samples with iron oxide content ≤ 4 wt.%, while a crossover to super-exchange interaction occurred in samples with higher iron oxide content. The magnetic behavior differed between MGC samples with iron oxide content ≤ 6 and ≥ 8 wt.%, with the latter exhibiting superparamagnetic behavior correlated with the percentage of magnetic phases present.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2023)
Article
Materials Science, Ceramics
Gertrud Kraeuter, Angela Eberhardt, Florian Peskoller, Nusret Sena Gueldal, Alfred Lell, Riina Ritasalo, Tero Pilvi, Manfred Roemer, Gerhard Domann, Peer Loebmann
Summary: By using Sol-gel formulations instead of silicone as the matrix material for phosphors in pc-LEDs, organic groups were minimized to reduce yellowing during operation. YAG:Ce particles were evenly embedded in Sol-gel binders, resulting in operational light sources that were compared to standard silicone-based elements for performance. Additional ALD laminates were deposited to seal possible defects within the Sol-gel matrix for extra protection of the phosphors and underlying LEDs.
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
(2021)
Article
Materials Science, Multidisciplinary
B. L. Choudhary, Namita Kumari, Jyoti Kumari, Arvind Kumar, S. N. Dolia
Summary: This paper discusses the relaxation mechanism at a lower temperature in the Ni0.5Zn0.5Fe2O4 sample prepared using the sol-gel method. The crystal structure and elemental composition were analyzed using XRD and EDAX techniques, revealing a decrease in magnetic domain size with increasing temperature and supporting relaxation at lower temperatures.
Article
Environmental Sciences
Devaraj Manoj, Lalitha Gnanasekaran, Saravanan Rajendran, A. A. Jalil, Mohammad Nahid Siddiqui, F. Gracia, Matias Soto-Moscoso
Summary: The subject of water contamination and its impact on society and humans has been a topic of discussion for several decades. Phenolic compounds are widely found in water sources and it is crucial to determine their toxicity in natural and drinking water due to their harmful effects on humans. This study focuses on the development of an effective electrochemical sensor using a mesoporous structure of Fe3O4-TiO2 decorated on a glassy carbon electrode to detect catechol. The resulting Fe3O4-TiO2 based nanocomposite exhibited a mesoporous structure with highly active magnetite nanoparticles, showing a significant increase in the electrochemical response compared to pure TiO2.
ENVIRONMENTAL RESEARCH
(2023)
Article
Biochemistry & Molecular Biology
Patricia Gomes, Barbara Costa, Joao P. F. Carvalho, Paula I. P. Soares, Tania Vieira, Celia Henriques, Manuel Almeida Valente, Silvia Soreto Teixeira
Summary: Cancer is a leading cause of death worldwide and traditional treatments have limitations and severe side effects. Magnetic hyperthermia is an alternative method that can be used alone or in conjunction with chemotherapy or radiotherapy. The use of cobalt ferrite particles synthesized through an innovative biogenic sol-gel method was evaluated for its suitability in magnetic hyperthermia applications through thermal, structural, magnetic, and cytotoxic analyses.
Article
Chemistry, Physical
Andrius Pakalnis, Gediminas Niaura, Rimantas Ramanauskas, Dmitry Karpinsky, Guillaume Rogez, Marc Lenertz, Jerome Robert, Pierre Rabu, Shih-Wen Chen, Thomas Chung-Kuang Yang, Ramunas Skaudz, Aivaras Kareiva
Summary: Novel metastable hexagonal Lu(1-x)ScxFeO3 compounds were prepared and characterized. The phase composition was found to vary with the Sc content, and the reversible polar to nonpolar phase transition temperature decreased with increasing Sc content. The magnetization measurements showed non-zero room temperature magnetization and spin reorientation transitions.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Engineering, Biomedical
Sophie Maillard, Ludovic Sicard, Caroline Andrique, Coralie Torrens, Julie Lesieur, Brigitte Baroukh, Thibaud Coradin, Anne Poliard, Lotfi Slimani, Catherine Chaussain
Summary: Combining implantation of dense collagen hydrogels hosting murine dental pulp stem cells (mDPSC) with systemic injections of a sclerostin antibody leads to increased bone regeneration in large bone defects. The study also suggests that implantation of sclerostin-deficient MSC promotes new bone formation similarly to complete sclerostin deficiency.
ACTA BIOMATERIALIA
(2022)
Article
Biochemistry & Molecular Biology
Kun Wang, Marie Camman, Gervaise Mosser, Bernard Haye, Lea Trichet, Thibaud Coradin
Summary: A new protocol for preparing fibrin-collagen composite gels is described, showing potential as biomaterials. The addition of collagen increases the turbidity of the gels and reduces their shrinkage, with minimal influence on the rheological properties. Collagen fibers are observed within the fibrin network. Collagen favors cell proliferation and alignment, but interferes with cell differentiation and myotube formation.
Review
Chemistry, Multidisciplinary
Clemence Sicard
Summary: Enzyme immobilization is a method to enhance enzyme stability and re-usability. In this study, researchers successfully encapsulated enzymes within covalent organic frameworks, demonstrating high enzyme loading, catalytic activity, and stability.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Inorganic & Nuclear
Xavier Kesse, Clemence Sicard, Nathalie Steunou, Jean-Pierre Mahy, Remy Ricoux
Summary: A new biocatalyst MP8@MIL-101(Cr/Fe) was synthesized by immobilizing Microperoxidase 8 (MP8) within MIL-101(Cr/Fe) metal-organic framework. The characterization of MIL-101(Cr/Fe) and MP8@MIL-101(Cr/Fe) was done using PXRD, FTIR spectroscopy, and TGA. The catalytic activity of MP8@MIL-101(Cr/Fe) for styrene oxidation using H2O2 and tBuOOH was investigated under different reaction conditions and compared to MP8 alone. MP8@MIL-101(Cr/Fe) showed approximately 3 times higher efficiency and approximately 50% selectivity for styrene oxide compared to MP8 alone.
EUROPEAN JOURNAL OF INORGANIC CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Benjamin Le Ouay, Ryosuke Minami, Purna K. K. Boruah, Rin Kunitomo, Yuta Ohtsubo, Kohei Torikai, Ryo Ohtani, Cleimence Sicard, Masaaki Ohba
Summary: This study demonstrates the preparation of novel metal-organic polyhedra (MOPs) with anionic or cationic groups, which exhibit high affinity for proteins and can spontaneously form MOP-protein assemblies. The versatility of this method is illustrated using enzymes of different sizes and isoelectric points (pIs). The co-immobilization of cytochrome c with highly charged MOPs leads to a substantial increase in its catalytic activity.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Robotics
Mouna Ben Salem, Laurent Petit, Muneeb Ullah Khan, Jeremy Terrien, Christine Prelle, Frederic Lamarque, Thibaud Coradin, Christophe Egles
Summary: In this paper, a concept of an implantable drug delivery device capable of delivering drugs in the duodenum for a long period of time is presented. The device aims to address therapeutic non-adherence, which is a major barrier to patients receiving the full benefits of their medications. The device is based on a miniature tubular linear actuator that can move at discrete positions inside a tube, and the research work primarily focuses on the actuator design and validation.
JOURNAL OF MICRO-BIO ROBOTICS
(2023)
Article
Engineering, Biomedical
Sophia Houari, Karen Derocher, Tran Thu Thuy, Thibaud Coradin, Vesna Srot, Peter A. van Aken, Helene Lecoq, Thierry Sauvage, Etienne Balan, Julie Aufort, Marco Calemme, Nicolas Roubier, Julia Bosco, Katia Jedeon, Ariane Berdal, Derk Joester, Sylvie Babajko
Summary: Developmental Defects of Enamel (DDE), such as Dental Fluorosis (DF) and Molar Incisor Hypomineralization (MIH), are a significant public health problem. This study used a combination of structural and chemical methods to compare and study MIH, DF, and healthy teeth from 89 patients. The results show that DF is characterized by a homogeneous loss of mineral content and crystallinity on the outer layer of enamel, while MIH is associated with localized defects in the depth of enamel. Minor differences in elemental composition were detected at the nanoscale. The study also proposes the use of colorimetric measurements for clinical diagnosis and improved restoration protocols. The findings contribute to a better understanding of DDE and provide insights for personalized dentistry.
ACTA BIOMATERIALIA
(2023)
Review
Chemistry, Physical
Nassima Kana, Kaouther Touidjine, Sarah Olivier-Archambaud, Effrosyni Gkaniatsou, Michael Paris, Nicolas Dupre, Nicolas Gautier, Philippe Moreau, Clemence Sicard, Bernard Lestriez, Thomas Devic
Summary: Silicon is a promising alternative to graphite for lithium-ion battery negative electrodes due to its high capacities. Coating silicon particles with metal-organic frameworks (MOFs) has shown improved electrochemical performance. However, a 20 nm thick layer of MOF on the surface of silicon particles did not result in significant modifications of the electrochemical performance in practical electrode loading conditions.
ACS APPLIED ENERGY MATERIALS
(2023)
Review
Polymer Science
Enguerran Devernois, Thibaud Coradin
Summary: Type I collagen and chitosan are commonly used biological macromolecules for tissue engineering scaffolds. While collagen is biocompatible and provides biochemical cues, it has poor mechanical properties. Chitosan, on the other hand, is more versatile but not a good substrate for mammalian cells. Combining these two biomacromolecules allows for the preparation of interesting biomaterials with improved properties. However, there is a lack of understanding regarding chitosan-type I collagen interactions.
Article
Materials Science, Multidisciplinary
Anastasia Permyakova, Alshaba Kakar, Jonathan Bachir, Effrosyni Gkaniatsou, Bernard Haye, Nicolas Menguy, Farid Nouar, Christian Serre, Nathalie Steunou, Thibaud Coradin, Francisco M. Fernandes, Clemence Sicard
Summary: The mesoporous iron polycarboxylate MIL-100(Fe) was synthesized with the presence of Pseudomonas putida bacteria. The synthesis was done under green conditions, using pure aqueous media at 30 degrees C to ensure the integrity of the cell membrane. The resulting biohybrid showed a unique microstructure, with an exoskeleton encapsulating individual bacteria cell, suggesting strong interactions between the exopolysaccharides network and MOF precursors.
ACS MATERIALS LETTERS
(2023)
Article
Chemistry, Physical
Stephanie De Oliveira, Gregor Miklosic, Joelle Veziers, Sebastien Grastilleur, Thibaud Coradin, Catherine Le Visage, Jerome Guicheux, Matteo DEste, Christophe Helary
Summary: Collagen/hyaluronan composite hydrogels with physical properties suitable for biomedical applications can be synthesized by inhibiting the formation of polyionic complexes.
Article
Nanoscience & Nanotechnology
Kankan Qin, Rui F. P. Pereira, Thibaud Coradin, Veronica de Zea Bermudez, Francisco M. Fernandes
Summary: This study demonstrates the fabrication of three-dimensional porous silk foams as dermal patches for wound protection and controlled delivery of antibiotics. The silk foams exhibit good water wicking capacity, deformability, and antibacterial behavior. The method of reassembling natural materials as macroporous foams can be applicable to other multicomponent natural materials, playing a crucial role in applications involving controlled release of molecules and fluid transport.
ACS APPLIED BIO MATERIALS
(2022)
Article
Nanoscience & Nanotechnology
Kankan Qin, Rui F. P. Pereira, Thibaud Coradin, Veronica de Zea Bermudez, Francisco M. Fernandes
Summary: Silk from Bombyx mori has a unique arrangement of its two major components, which provides mechanical and surface properties for protecting the moth during its vulnerable phase. By reshaping the silk fibers into macroporous foam structures, this study demonstrates the potential of using these silk foams as dermal patches for wound protection and controlled drug delivery. This method can be extended to other natural materials and play a crucial role in applications involving controlled release and fluid transport.
ACS APPLIED BIO MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Sarah Christoph, Pierre Barre, Bernard Haye, Thibaud Coradin, Francisco M. Fernandes
Summary: We present a new class of hybrid material composed of a polysaccharide macroporous core surrounded by a thin silica layer, which can be used as adsorption platforms for organic pollutants in soil. These hybrid materials showed structural stability and sorption capacity for organic pollutants significantly higher than the surrounding soils. They possess all the necessary properties to be effective materials for soil depollution and are easy to recover.
