Review
Environmental Sciences
Malsawmdawngkima Hnamte, Ajmal Koya Pulikkal
Summary: Wastewater treatment is crucial for protecting water sources, and clay-polymer nanocomposites (CPNs) have shown promise as efficient adsorbents for pollutants in water.
Article
Engineering, Environmental
Estefania Baigorria, Leonardo F. Fraceto
Summary: This study develops nanocomposite biopolymeric hydrogels of chitosan and clay and examines their biosorption capacity of the pesticide paraquat from water. The results show that the nanocomposite hydrogels have a high adsorption capacity, and the presence of clay is crucial for the adsorption process. These low-cost and sustainable nanocomposite hydrogels have promising applications in pollutant-free water purification.
JOURNAL OF WATER PROCESS ENGINEERING
(2022)
Article
Chemistry, Physical
Hemant Mittal, Ali Al Alili, Pranay P. Morajkar, Saeed M. Alhassan
Summary: The synthesized GO/PEI-NCH hydrogel demonstrated high adsorption capacity for Cr(VI) contaminated water, good stability, and reusability through multiple adsorption-desorption cycles, making it a promising candidate for wastewater treatment.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2021)
Article
Multidisciplinary Sciences
Zahra Rezanejad Gatabi, Niloofar Heshmati, Mehri Mirhoseini, Maedeh Dabbaghianamiri
Summary: In this paper, the application of nanoclays in the wound healing field is thoroughly discussed. The common types of nanoclays and their physical and chemical characteristics are introduced, as well as the methods for forming hydrogels. The potential of nanoclays in wound healing is highlighted.
ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING
(2023)
Review
Engineering, Environmental
Itamar A. Shabtai, Laurel M. Lynch, Yael G. Mishael
Summary: This review presents the latest progress in CPN research through a meta-analysis approach, highlighting the correlation between CPN and pollutant properties. Results indicate that CPNs have higher adsorption capacities for different classes of pollutants, with adsorption being influenced by CPN fabrication method, polymer functional groups, and pollutant properties.
Article
Chemistry, Physical
Jefferson C. S. da Silva, D. B. Franca, Francisco Rodrigues, Dyego M. Oliveira, Pollyana Trigueiro, E. C. Silva Filho, M. G. Fonseca
Summary: In this study, bionanocomposites of chitosan and bentonite were prepared using microwave heating, showing successful adsorption of dye. The optimal adsorption conditions were found to be at a pH of 1.0 and a contact time of 20 minutes. The adsorption capacity increased with higher proportions of the cation exchange capacity (CEC), indicating the effectiveness of the nanocomposites as dye adsorbents.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2021)
Article
Environmental Sciences
Sanjida Aktar, Shamim Mia, Tomoyuki Makino, Mohammad Mahmudur Rahman, Anushka Upamali Rajapaksha
Summary: Removal of arsenic from drinking water is a global concern, and adsorptive removal is considered the most viable method. This study aimed to assess the effectiveness of various adsorbents and evaluate the influence of experimental conditions on maximum adsorption. The results showed that nanoparticles and pre-doped biochar demonstrated the highest sorption capacity among the sorbents.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Chemistry, Multidisciplinary
Fabrizio Bernini, Elena Castellini, Maria Franca Brigatti, Beatrice Bighi, Marco Borsari, Daniele Malferrari
Summary: Kaolinite functionalized with mu-oxo Fe3+-phenanthroline complex was found to efficiently remove and store gaseous heptanethiol. The continuous catalytic activity of Fe3+ towards the oxidation of thiol to disulfide explained the significant removal of the smelly gas and the high thiol/Fe(3+)Phen molar ratio.
Article
Polymer Science
Hafida Ferfera-Harrar, Tayeb Benhalima, Amina Sadi
Summary: Hydrogel nanocomposites comprised of chitosan-grafted-hydrolyzed polyacrylamide as matrix and montmorillonite clay as nanofiller were successfully synthesized as efficient adsorbents for removing Basic Red 46 dye. The nanohybrid hydrogels showed superior water-absorbing ability, thermal stability, pH-sensitivity, and high adsorption efficiency for the dye due to electrostatic interactions and hydrogen bonding. Effective regeneration and multiple cycles of dye release indicate their promising potential in treating water contaminated with cationic dyes.
Article
Chemistry, Physical
C. Le Coeur, C. Lorthioir, A. Feoktystov, B. Wu, G. Volet, C. Amiel
Summary: The study investigated the adsorption behavior and local structures within nanocomposite gels based on Laponite and POXA, revealing the unique evolution of the storage modulus G' with POXA concentration. In contrast to PEO, the stronger affinity of POXA chains for clay surfaces reduced the inhomogeneities for Laponite disks within the gels, leading to the strengthening of POXA-based hydrogels.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2021)
Review
Engineering, Environmental
Suhail Ayoub Khan, Tabrez Alam Khan
Summary: This review highlights the importance and applications of clay-hydrogel nanocomposites in wastewater treatment, emphasizing their high sorption capacity and environmental viability, and summarizing their adsorption and regeneration mechanisms.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Biochemistry & Molecular Biology
Pilar Alaman-Diez, Carlos Borau, Pedro Enrique Guerrero, Hippolyte Amaveda, Mario Mora, Jose Maria Fraile, Elena Garcia-Gareta, Jose Manuel Garcia-Aznar, Maria Angeles Perez
Summary: The extracellular matrix (ECM) plays a crucial role in the development and progression of tumoral tissue, affecting tumor cell behavior such as invasion, migration, and malignancy. Our study examines the role of collagen type I in cancer development and spread using engineered tumor models grown in collagen-based hydrogels. We utilize microfluidic techniques to investigate the effects of modifying the mechanical properties of collagen hydrogels with Laponite nanoclay and changing the stiffness of the collagen microenvironment on tumor spheroid growth. Our findings support the use of ECM components and engineered tumor models in cancer research, providing a biocompatible and biomimetic approach to tailor the mechanical properties of conventional collagen hydrogels.
Review
Environmental Sciences
Pratik Das, Suvendu Manna, Ajaya K. Behera, Moumita Shee, Piyali Basak, Amit Kumar Sharma
Summary: Clays and their composites have gained significant attention due to their affordability, accessibility, and environmental friendliness. The development of innovative polymer-nanoclay composites has been facilitated by recent advancements in material technologies. These composite materials, possessing superior qualities such as increased density, strength, large surface areas, flame retardancy, and various capabilities, are considered potential advanced materials, finding applications in aerospace, automotive, construction, petroleum, biomedical, and wastewater treatment industries. This review paper discusses the progress made in the synthesis and preparation of clay-polymer nanocomposites, as well as characterization techniques and their applications in the biomedical sector.
ENVIRONMENTAL RESEARCH
(2022)
Article
Polymer Science
Caroline Akinyi, Jude O. Iroh
Summary: Polyimide matrix nanocomposites have gained attention for their high thermal stability, good interfacial bonding, light weight, and good wear resistance and corrosion, making them suitable for aerospace and advanced equipment applications. The use of nanofillers such as carbon nanotubes, graphene, graphene oxide, clay, and alumina has been studied to improve the properties of polyimide nanocomposites. This study focused on the interaction between clay and graphene to enhance thermal stability. The addition of clay improved the thermal decomposition temperature by 50 degrees C and increased the decomposition temperature of the char formed in air atmosphere by 80 degrees C.
Article
Polymer Science
Gauthier Legrand, Sebastien Manneville, Gareth H. McKinley, Thibaut Divoux
Summary: Nanocomposite gels formed by mixing nanoparticles and polymers offer a limitless creative space for the design of functional advanced materials. In this study, we focused on aqueous dispersions of hydrophobic colloidal soot particles, namely, carbon black (CB) dispersed with a sodium salt of carboxymethylcellulose (CMC). Varying the relative content of CB particles and cellulose gum allows us to explore a rich phase diagram that includes a gel phase. Our results provide an extensive experimental characterization of CB-CMC dispersions for designing soft nanocomposite gels based on hydrophobic interactions.
