Article
Polymer Science
Zohreh Taghizadeh Tabari, Majid Baniadam, Morteza Maghrebi, Gholam Hossein Zohuri
Summary: In this study, a novel functionalization method was used to localize carbon nanotubes (CNTs) at the interface of immiscible polymers. The asymmetric functionalization promoted interfacial adhesion between polymers and enhanced the mechanical strength of the composites.
JOURNAL OF POLYMER RESEARCH
(2022)
Article
Polymer Science
Josue A. Torres-Avalos, Leonardo R. Cajero-Zul, Milton Vazquez-Lepe, Fernando A. Lopez-Dellamary, Antonio Martinez-Richa, Karla A. Barrera-Rivera, Francisco Lopez-Serrano, Sergio M. Nuno-Donlucas
Summary: The study focused on the synthesis of polymer nanocomposites with functionalized carbon nanotubes through in situ emulsion polymerization. Characterization techniques such as FT-IR and Raman spectroscopies were used to investigate the chemical structure and drug release capability. The release profile of hydrocortisone in some nanocomposites was found to be influenced by a change in hydrogen bond balance.
Article
Chemistry, Multidisciplinary
Cecile A. C. Chazot, Behzad Damirchi, Byeongdu Lee, Adri C. T. van Duin, A. John Hart
Summary: Molecularly organized nanocomposites of polymers and carbon nanotubes show great promise as high-performance materials. However, achieving controllable interaction between the polymer and carbon nanotubes remains a challenge. In this study, the researchers successfully coated carbon nanotubes with a conformal coating of meta-aramid, providing insights for future investigation of the mechanical properties of these composites and the application of in situ polymerization to other substrates.
Article
Materials Science, Composites
Afrooz Eshraghian, Milad Kamkar, Mohammad Asgari, Mohammad Arjmand, Uttandaraman Sundararaj
Summary: This study investigates the effect of functionalized nanoclay on the dielectric properties of synthesized nitrogen-doped carbon nanotube (N-CNT)/nanoclay/polyvinylidene fluoride (PVDF) nanocomposites prepared via melt-mixing in the X-band. The results show that the incorporation of nanoclay improved the dielectric properties, reduced dissipation factor, and expanded the percolation region of the N-CNT/PVDF nanocomposites. The addition of nanoclay also reduced the agglomeration area ratio and caused the collapse of N-CNT networks in the nanocomposites.
POLYMER COMPOSITES
(2021)
Article
Materials Science, Multidisciplinary
Somayeh Abazari, Ali Shamsipur, Hamid Reza Bakhsheshi-Rad, Filippo Berto
Summary: Magnesium-based composites, such as the Mg-3Zn/xfCNTs composite studied in this paper, have been investigated as biodegradable materials for orthopedic implants. The incorporation of zinc and functionalized carbon nanotubes (fCNTs) in the magnesium matrix has been successfully achieved using a ball milling process. The composite exhibits excellent mechanical properties, corrosion resistance, and biocompatibility, making it a potential candidate for biodegradable implant applications.
MATERIALS & DESIGN
(2022)
Article
Materials Science, Composites
Sinan Feng, Cong Liu, Hung-Jue Sue
Summary: This study presents an alternative strategy for the preparation of high-performance PEEK/MWCNT nanocomposites using an interfacial crystallization approach. By utilizing a polyetheretherketimine (PEEKt) to prepare PEEK nanocomposites, good dispersion of MWCNTs in the PEEK matrix is achieved without the need for surfactants or compatibilizers. The resulting nanocomposites exhibit improved properties and have potential applications in fields such as energy production, electrochemical devices, and coatings under harsh conditions.
COMPOSITES SCIENCE AND TECHNOLOGY
(2022)
Article
Polymer Science
Neazar Baghdadi, M. Sh. Zoromba, M. H. Abdel-Aziz, A. F. Al-Hossainy, M. Bassyouni, Numan Salah
Summary: The study engineered PPy in one-dimensional nanostructured form using MWCNTs as a core template, enhancing its thermoelectric performance and forming MWCNTs/PPy nanocomposites. These nanocomposites, grown at different concentrations of MWCNTs, exhibit core-shell structures with varying thicknesses of PPy layers. Samples with higher MWCNTs content demonstrated improved thermoelectric performance.
Article
Materials Science, Textiles
Mohammad Farsi, Fatemeh Maashi Sani, Masoud Ebadi, Majid Shahbabaei
Summary: This study proposes a strategy to enhance the performance of wood-plastic composites (WPCs) using functionalized carbon nanotubes (CNTs). The results show that increasing the content of raw CNTs and Maleic Anhydride grafted Polyethylene (MAPE) can improve the mechanical and physical properties of the composite.
FIBERS AND POLYMERS
(2023)
Article
Chemistry, Physical
S. J. Shivaraja, R. K. Gupta, V Manjuladevi
Summary: Polymer dispersed liquid crystals (PDLCs) containing ODA-SWCNT dispersions were prepared and their electro-optical properties were studied. Compared to pure PDLCs, the PDLCs with ODA-SWCNT dispersions showed a shorter response time, lower threshold voltage, higher optical transparency, and better image sharpness in the ON-state.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
Article
Chemistry, Analytical
Jinge Li, Liying Zhao, Wenbin Wang, Yanju Liu, Huaixia Yang, Jinming Kong, Fuchun Si
Summary: A novel sandwich-type electrochemical aptasensor was constructed for CEA detection, showing a wide detection range and low detection limit. PFcGE-CNTs composites prepared by ring-opening polymerization served as a platform, significantly amplifying the electrochemical signal.
SENSORS AND ACTUATORS B-CHEMICAL
(2021)
Article
Materials Science, Composites
Junwei Lv, Yitian Qin, Zheng Li, Jiaxiang Liu, Xu Wang, Xiangyang Liu, Yang Liu
Summary: This article investigates the enhancement effect of FCNTs on the properties of natural rubber, revealing the influence of temperature on dormant radicals and the correlation between initiation abilities of FCNTs and their fluorine contents. The introduction of FCNTs successfully increases the tensile strength of rubber composites and exhibits excellent microwave absorption properties.
COMPOSITES SCIENCE AND TECHNOLOGY
(2021)
Article
Materials Science, Paper & Wood
Mohammad Shak Sadi, Egle Kumpikaite
Summary: Highly conductive polypyrrole (PPy)/single-walled carbon nanotube (SWCNT)/polydopamine (PDA)/cotton composite fabrics were developed for wearable sensing and joule heating applications. The presence of PPy significantly improved the electrical conductance of the SWCNT/PDA/cotton fabric and exhibited a superior conductivity of 8 Ω/sq. The fabrication of PPy/SWCNT/PDA/cotton composite fabric offers a facile but effective approach to develop durable electronic textiles for wearable applications.
Article
Chemistry, Multidisciplinary
Prathamesh P. Deshpande, Matthew S. Radue, Prashik Gaikwad, Swapnil Bamane, Sagar U. Patil, William A. Pisani, Gregory M. Odegard
Summary: In this study, molecular dynamics simulation was used to investigate the interface properties of flCNT with epoxy, bismaleimide (BMI), and benzoxazine high-performance resins, revealing differences in interfacial interactions between different resins and flCNT.
Article
Automation & Control Systems
Ana V. De Leon, O. Arda Vanli, Rebekah D. Sweat
Summary: Understanding the interfacial bonding behavior of nanocomposites under environmental conditions is crucial for their applications in various industries. This study investigated the effect of temperature, strain rate, and polymer matrices on the interfacial shear strength of carbon nanotube (CNT) nanocomposites. Statistical analysis revealed that temperature has a significant impact on the interfacial shear strength, independent of the matrix and strain rate. Additionally, there were interactions between the matrix and temperature, as well as all three factors. The study also found that the interfacial shear strength decreases non-linearly with temperature.
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
(2023)
Article
Engineering, Electrical & Electronic
Fan Wang, Guanzheng Xu, Wenhao Shen, Sukho Park, Qinchuan Li
Summary: This study reports a low voltage ionic soft actuator based on nanofibers, ionic liquid, and polypyrrole electrodes, which exhibits high actuation performance and long working durability. The actuator also demonstrates various bioinspired applications, showing great potential for wide-ranging applications.
SENSORS AND ACTUATORS A-PHYSICAL
(2023)
Article
Thermodynamics
Ioanna-Georgia Athanasoulia, Konstantinos Giachalis, Nadia Todorova, Tatiana Giannakopoulou, Petroula Tarantili, Christos Trapalis
Summary: The nanocomposites of PEG/GO prepared by drying ultrasonically homogenized aqueous solution were incorporated into PLLA via melt extrusion, resulting in increased GO structural defects and enhanced PEG penetration. Hydrogen bonding interactions, as identified by FTIR, were found in the hybrids, while DSC tests showed that GO promoted PEG crystallization by increasing its T-c and X-c. The combination of nucleant and plasticizer in the hybrids increased PLLA's Tc and melting temperature, with GO acting as an effective nucleating agent for plasticized PLLA.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2021)
Article
Chemistry, Physical
Dimitris Niarchos, Margaritis Gjoka, Ana Maria Schonhobel, Alex Aubert, Rajasekhar Madugundo, Jose Javier Saiz Garitaonandia, Jose Manuel Barandiaran, George Hadjipanayis
Summary: A series of (Nd1-xSmx)Fe11Ti alloys with the ThMn12 crystal structure have been fabricated to promote a strong uniaxial anisotropy in NdFe11Ti without the need of nitrogenation. The study found that the anisotropy field of the alloys rapidly increases with the incorporation of Sm and is correlated with the quadrupole splitting.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Physics, Applied
E. Hourdakis, A. Kaidatzis, D. Niarchos
Summary: A novel concept for a self-powered photodetector is introduced, which is cost effective and can be easily integrated with Si electronics. The device operates based on the shadow effect and exhibits anisotropic behavior in diodes under illumination, resulting in a measurable open circuit voltage and short circuit current. The device's open circuit voltage has a linear term with respect to illumination power due to the presence of built-in parallel resistance, in addition to the logarithmic term in Schottky solar cells.
JOURNAL OF APPLIED PHYSICS
(2021)
Article
Chemistry, Physical
Martha Pylarinou, Alexia Toumazatou, Elias Sakellis, Evangelia Xenogiannopoulou, Spiros Gardelis, Nikos Boukos, Athanasios Dimoulas, Vlassis Likodimos
Summary: Surface deposition of FeOx nanoclusters on TiO2 photonic crystals was investigated to explore the interplay of slow-photon amplification, visible light absorption, and charge separation in FeOx-TiO2 photocatalytic films. The study found that low amounts of FeOx nanoclusters improved photocatalytic performance under visible light, but higher loading resulted in performance deterioration, particularly under UV-Vis light.
Article
Chemistry, Multidisciplinary
Panagiota Bika, Nikolaos Ioannidis, Maria-Anna Gatou, Yiannis Sanakis, Panagiotis Dallas
Summary: This study reveals the coordination of copper ions absorbed by a series of covalent organic frameworks. The copper retention capacity and efficiency of different morphologies and chemical structures were compared. SEM, XRD, and EPR spectroscopy were used to analyze the morphological changes and coordination structure of copper ions. The study also explores the influence of the environment on the coordination of copper ions.
Article
Chemistry, Physical
Constantinos Moularas, Christos Dimitriou, Yiannis Georgiou, Georgios Evangelakis, Nikos Boukos, Yiannis Deligiannakis
Summary: In this study, the mechanism of hot-electron transfer from plasmonic nanostructures to redox-active metals is quantitatively investigated. The presence of a 1 nm SiO2 shell on the nanoaggregates is found to play a crucial role in facilitating the hot-electron transfer via a decrease in activation energy, effectively suppressing the oxidative path and eliminating photothermal effects.
JOURNAL OF PHYSICAL CHEMISTRY C
(2023)
Article
Chemistry, Multidisciplinary
Pavlos Psathas, Areti Zindrou, Christina Papachristodoulou, Nikos Boukos, Yiannis Deligiannakis
Summary: ABO(3) perovskites are versatile photoactive materials that can be optimized for specific technologies by doping or heterojunction engineering. In this study, high crystallinity SrTiO3 nanoparticles with controlled La-doping and SrTiO3/CuO heterojunction formation were synthesized using Double-Nozzle Flame Spray Pyrolysis (DN-FSP) technology. The La:SrTiO3/CuO nanocatalysts showed improved photocatalytic activity for H2O/CH3OH mixtures compared to CuO-free La:SrTiO3, with the optimized La:SrTiO3/0.5%CuO catalyst achieving a photocatalytic CH4 production of 1.5 mmol g(-1) h(-1). The study demonstrates the potential of DN-FSP for scalable production of complex nanomaterials with controlled doping and heterojunction in a single-step synthesis.
Article
Pharmacology & Pharmacy
Nefeli Papadopoulou-Fermeli, Nefeli Lagopati, Natassa Pippa, Elias Sakellis, Nikos Boukos, Vassilis G. Gorgoulis, Maria Gazouli, Evangelia A. Pavlatou
Summary: The aim of this study is to synthesize titania-based composite materials with anticancer potential under visible-light irradiation. Specifically, silver-modified titanium dioxide nanoparticles are embedded in a stimuli-responsive microgel to form composite particles. The goal is to develop a drug-delivery system that uses optical fibers to photoactivate nanoparticles for targeting cancer cells. The resulting Ag-TiO2 nanoparticles and composite materials demonstrate high photocatalytic degradation efficiency and significant anticancer potential when exposed to visible light.
Article
Chemistry, Physical
Maria-Athina Apostolaki, Elias Sakellis, Polychronis Tsipas, Maria Giannouri, Spiros Gardelis, Nikos Boukos, Athanasios Dimoulas, Vlassis Likodimos
Summary: Heterostructured WO3/TiO2 photonic crystal films in the form of three-dimensional macroporous inverse opals were developed by single-step, three-phase co-assembly of colloidal templates with water soluble precursors. The properties of the inverse opals could be controlled by adjusting the W/Ti molar ratio and macropore diameter. This method provides a promising route for the development of heterostructured inverse opal networks with tailored electronic properties and improved solar light harvesting.
APPLIED SURFACE SCIENCE
(2023)
Article
Chemistry, Multidisciplinary
Ruben Canton-Vitoria, Nikolaos Heliopoulos, Nikos Boukos, Sozon Vasilakos, Dionysios Siamidis, Kostas Stamatakis, Nikos Tagmatarchis
Summary: This work presents a multi-step modification process to incorporate graphene oxide (GO) nanosheets into Kevlar fabric. Spectroscopic, thermal and microscopy imaging techniques were used to track the modification of Kevlar and the formation of the Kevlar-GO hybrid fabric. The level of functionalization of Kevlar can be controlled by nitration time, allowing for a content of GO up to 30%. The covalent modification of Kevlar does not compromise its mechanical properties and the Kevlar-GO hybrid fabric shows enhanced ultimate strength and significant antibacterial behavior.
CHEMISTRY-A EUROPEAN JOURNAL
(2023)
Article
Engineering, Environmental
Ioannis Tournis, Dimitris Tsiourvas, Zili Sideratou, Lamprini G. Boutsika, Aggeliki Papavasiliou, Nikos K. Boukos, Andreas A. Sapalidis
Summary: Water is a precious natural resource, and its demand is expected to increase in the future. Scientists have developed innovative nanocomposite membranes to enhance the performance of membrane distillation for desalination. By introducing superhydrophobic nanoparticles on the membrane surface, these membranes exhibit improved fouling resistance and permeability, addressing critical issues in the membrane distillation process.
ENVIRONMENTAL SCIENCE-WATER RESEARCH & TECHNOLOGY
(2022)
Article
Chemistry, Physical
Ali K. Ismael, Laura Rincon-Garcia, Charalambos Evangeli, Panagiotis Dallas, Turki Alotaibi, Alaa A. Al-Jobory, Gabino Rubio-Bollinger, Kyriakos Porfyrakis, Nicolas Agrait, Colin J. Lambert
Summary: This study demonstrates that insight into molecular-scale thermoelectricity can be obtained by examining the widths and extreme values of Seebeck histograms. The researchers investigate the electrical conductance and Seebeck coefficient of different endohedral metallofullerenes (EMFs) and find that the standard deviations in the Seebeck coefficient of EMF-based junctions are correlated with geometric standard deviation and charge inhomogeneity. They also compare these molecules with C-60 and show that sigma(q) and sigma(S) are the largest for Sc3C2@C-80 and the smallest for C-60. A large value of sigma(S) indicates that a molecule can exhibit a wide range of Seebeck coefficients, suggesting the potential for high-performance thermoelectricity. All the EMFs studied are bi-thermoelectric materials.
NANOSCALE HORIZONS
(2022)
Article
Materials Science, Multidisciplinary
Elias Sakellis, Antonis Markopoulos, Christos Tzouvelekis, Manolis Chatzigeorgiou, Anastasios Travlos, Nikos Boukos
Summary: This paper presents a low-cost, simple electrochemical method for large-area growth of single crystal ZnO nanorods on ITO glass slides. By varying growth parameters, the length and diameter of the nanorods can be tuned. Additionally, different types of seed layers have been tested to influence the growth results.
Article
Chemistry, Multidisciplinary
T. Giannakopoulou, G. Pilatos, N. Todorova, N. Boukos, T. Vaimakis, I. Karatasios, C. Trapalis
Summary: This article presents a simple and eco-friendly method for the fabrication of carbon nanotubes with different morphologies, showing that the growth of tubular or bamboo-like nanostructures is determined by the surface and bulk diffusions of carbon onto and into the catalyst surface at different temperatures. The experimental results suggest that bamboo-like CNTs grow more effectively at 850 degrees Celsius.
MATERIALS TODAY CHEMISTRY
(2021)
Article
Materials Science, Multidisciplinary
Katerina Skopalova, Itana Nusa Bubanja, Dragomir Stanisavljev, Nikola Cvjeticanin, Vera Kasparkova, Eliska Dad'ova, Erika Pavlikova, Marek Koutny, Marija Gizdavic-Nikolaidis, Petr Humpolicek
Summary: This study compares the biological properties of PANI prepared by different synthesis methods and oxidizing agents, which improves its potential applications in the biomedical field.
Article
Materials Science, Multidisciplinary
Hui-Ping Li, Cai-Yan Gao, Zhi-Ping Chen, Xin-Heng Fan, Lian-Ming Yang
Summary: In this study, a novel type of D-A non-fused-ring copolymers was designed and synthesized to overcome the trade-off relationship between electrical conductivity and Seebeck coefficient in organic semiconductors. The incorporation of fluorine atoms into the polymer backbone effectively increased the ordered degree of molecular stacking and improved both the electrical conductivity and Seebeck coefficient. The bimodal orientation of polymers played a crucial role in decoupling the correlation between electrical conductivity and Seebeck coefficient.
Article
Materials Science, Multidisciplinary
Mansour A. S. Salem, Amjad Mumtaz Khan, Hatem A. M. Saleh, Khalil M. A. Qasem, Mizna Ahmed, Aadil Shafi Bhat, Abdulaziz Abdullah Qasem Ali, Younes S. A. Ghanem, Ali Alrabie, Abdel-Basit Al-Odayni, Waseem Sharaf Saeed, Basheer Al-Anesi
Summary: This research focuses on the versatile substance, polyaniline/layered double hydroxide (PANI@Nd-Co/LDH), under solvothermal conditions. A thorough analysis of its structure and morphology was conducted using various analytical methods. The findings showed that PANI@Nd-Co/LDH exhibited highly sensitive and specific fluorescence detection of Pb(II) and Al(III), outperforming other heavy metal ions. The sensor demonstrated a turn-off fluorescence response for Pb(II) ions and a turn-on fluorescence response for Al(III) ions. The minimum detectable limits (MDL) were determined to be 9.6 nM for Pb(II) and 220 nM for Al(III). PANI@Nd-Co/LDH could be easily regenerated and reused for multiple cycles. The detection mechanisms involved the inner filter effect (IFE) for Pb(II) and the chelation-enhanced fluorescence (CHEF) effect for Al(III). These results highlight the excellent potential of PANI@Nd-Co/LDH in the detection and recognition of Pb(II) and Al(III) ions.
