Article
Biochemistry & Molecular Biology
Fatima Zohra Yakdoumi, Assia Siham Hadj-Hamou, Nahla Rahoui, Md Mushfequr Rahman, Volker Abetz
Summary: In this study, poly(lactic acid) nanocomposite films with improved properties for food packaging were prepared by incorporating modified carbon nanotubes. The modified carbon nanotubes showed significantly enhanced crystallization rate, mechanical properties, barrier properties, and antimicrobial and antifungal activity. The nanocomposite films exhibited increased Young modulus, hardness, and improved barrier properties compared to pure poly(lactic acid) films.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2022)
Article
Polymer Science
Seham S. Alterary, Raya M. Alyabes, Ahmed A. Alshahrani, Monirah A. Al-Alshaikh
Summary: Reverse osmosis is the most widely used strategy in membrane technology. This study focuses on improving the performance of thin-film membranes by modifying the surface characteristics of support layers. Different membranes were fabricated using interfacial polymerization, with varying concentrations of multiwalled carbon nanotubes and ethanol. The results showed that the membrane with a selective layer of PA-EtOH 30% exhibited the best salt rejection, while the membrane with PA-MWCNTs 0.15% had the lowest salt rejection due to its hydrophobic nature.
Article
Nanoscience & Nanotechnology
Vasuki Durairaj, Panpan Li, Touko Liljestrom, Niklas Wester, Jarkko Etula, Ilona Leppanen, Yanling Ge, Katri S. Kontturi, Tekla Tammelin, Tomi Laurila, Jari Koskinen
Summary: Four types of nanocellulosic materials with different functional groups were used to disperse multiwalled carbon nanotubes, resulting in composite electrodes with excellent stability and electrochemical properties in different electrolytes. Anionic fibrillar nanocellulosic composites showed strong electrostatic and physical enrichment effects, while denser crystalline composites did not exhibit such behavior. This study provides insights for developing customizable nanocellulose/carbon nanomaterial hybrid platforms for various electrochemical applications.
ACS APPLIED NANO MATERIALS
(2021)
Article
Materials Science, Multidisciplinary
Jesus Antonio Carlos Cornelio, Edwin Espinel Blanco, Javier Lara Romero, Juan Sebastian Rudas, Gustavo Suarez Guerrero, Alejandro Toro, Lina Marcela Hoyos-Palacio
Summary: Carbon nanotubes were synthesized and functionalized with molybdenum disulfide nanoparticles. The functionalized nanotubes showed variations in crystal structure, chemical composition, and thermal response, indicating potential use in diverse engineering fields.
DIAMOND AND RELATED MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Panagiota Zygouri, Antrea M. M. Athinodorou, Konstantinos Spyrou, Yannis V. V. Simos, Mohammed Subrati, Georgios Asimakopoulos, Konstantinos C. C. Vasilopoulos, Patra Vezyraki, Dimitrios Peschos, Konstantinos Tsamis, Dimitrios P. P. Gournis
Summary: Carbon nanotubes (CNTs) are promising nanocarriers for drug delivery due to their excellent physicochemical and structural properties. In this study, hydroxytyrosol (HT) was immobilized on functionalized CNTs to enhance its oral absorption and stability. The effects of cellular oxidized multiwall carbon nanotubes (oxMWCNTs) as carriers for HT were investigated, revealing their biocompatibility and potential as nanocarriers for targeted drug delivery.
Article
Chemistry, Physical
Zeynab Khazaee, Ali Reza Mahjoub, Amir Hossein Cheshme Khavar
Summary: A new low-cost bimetallic nanoalloy of CuBi was successfully fabricated on carboxylated MWCNTs, demonstrating significantly enhanced visible light-driven photocatalytic removal of fluoroquinolone-type antibiotics (Ciprofloxacin and Ofloxacin) compared to pure CNTs. The ultrathin 2D nanosheets of CuBi alloy were uniformly distributed on the CNTs bundles, contributing to the high photocatalytic oxidation rate of the CuBi-nanoalloy/MWCNTs.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2021)
Article
Chemistry, Physical
Balamurugan Arumugam, Selvakumar Palanisamy, Sayee Kannan Ramaraj, Matteo Chiesa
Summary: A hydrothermal technique was used to generate a MoO3/f-MWCNTs nanocomposite as an electrode material for electrochemical detection of PTZ. Extensive characterization of the nanocomposite was done using spectroscopic and microscopic techniques. The MoO3/f-MWCNTs nanocomposite electrode showed superior electrocatalytic activity, low oxidation overpotential, low detection limit, wide linear response range, and high sensitivity for PTZ detection.
SURFACES AND INTERFACES
(2023)
Article
Nanoscience & Nanotechnology
Megha Saxena, Disha Mittal, Richa Boudh, Kapinder Kumar, Anita K. Verma, Reena Saxena
Summary: The study focused on the application potential of oxidized and functionalized MWCNTs in water treatment and antimicrobial activity. The results showed that the MWCNTs were effective in removing drugs from water and exhibited antimicrobial activity against both gram-negative and gram-positive bacteria.
ADVANCES IN NANO RESEARCH
(2021)
Article
Chemistry, Physical
Pawel Smolen, Tomasz Czujko, Zenon Komorek, Dominik Grochala, Anna Rutkowska, Malgorzata Osiewicz-Powezka
Summary: This study successfully obtained electrically conductive materials by adding functionalized multiwalled carbon nanotubes, and confirmed that carbon nanotubes as polymer reinforcements can increase tensile strength and strain percentage. However, increasing nanofiller percentages resulted in a drastic decrease in Young's modulus values.
Article
Chemistry, Multidisciplinary
Arya Uthaman, Hiran Mayookh Lal, Chenggao Li, Guijun Xian, Sabu Thomas
Summary: The study investigated the thermal, mechanical, and water uptake properties of epoxy nanocomposites with surfactant-modified MWCNTs, showing that the addition of surfactant-modified CNTs into the epoxy significantly improved mechanical and thermal properties. However, excessive concentration of CNTs led to agglomeration and decreased the performance of the nanocomposites.
Article
Chemistry, Analytical
Renato Hisashi Okina, Eliana Maira Agostini Valle, Fabio Ruiz Simoes, Lucia Codognoto
Summary: A glassy carbon electrode modified with carboxylic groups functionalized multiwalled carbon nanotubes was used to determine estrone hormone in seawater samples, showing excellent performance in detecting the target analyte in marine environments.
Article
Nanoscience & Nanotechnology
Amy Chall, John Stagg, Andrew Mixson, Eric Gato, Rafael Quirino, Vinoth Sittaramane
Summary: This study demonstrates the potential of using microwaves in combination with multiwalled carbon nanotubes for in vivo localized hyperthermic ablation of cells as a promising methodology for targeted cancer treatment. The experiments on mice show no toxicity associated with the treatment strategy, suggesting a safe and effective approach for cancer therapy.
Article
Chemistry, Physical
Kamil Peckh, Beata Orlinska
Summary: In this study, transition metal salts of carboxylated carbon nanotubes were synthesized and their catalytic activity in the oxidation of ethylbenzene was studied. Results showed that the Cu (II) salt exhibited the highest conversion of ethylbenzene.
Article
Environmental Sciences
Krassimira Ilieva-Makulec, Anna Augustyniuk-Kram, Izabella Olejniczak, Kamil Karaban, Marek Nowicki, Tomasz Runka, Andrzej Kulczycki, Jaroslaw Kaluzny
Summary: The study found that multiwalled carbon nanotubes had a potential impact on soil organisms, especially with higher sensitivity in nematodes. Contamination by CNTs significantly affected the dynamics and diversity of soil fauna and microbial communities, potentially leading to long-term consequences for soil functioning and nutrient cycling.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Pharmacology & Pharmacy
Lijuan Ye, Weibin Chen, Yuan Chen, Yuqin Qiu, Jun Yi, Xiaofang Li, Qiuxiao Lin, Bohong Guo
Summary: A hybrid nanocarrier was developed to facilitate transdermal delivery of drugs. The f-MWCNTs-KP-ES preparation showed sustained release effect and faster skin penetration rate compared to commercial gel. Fluorescence microscopy and in vivo pharmacokinetic experiments confirmed the faster and deeper penetration of f-MWCNTs-RB-ES. The overall data demonstrate the promising transdermal drug delivery system of f-MWCNTs composite ethosomes formulation.
JOURNAL OF DRUG DELIVERY SCIENCE AND TECHNOLOGY
(2022)
Article
Chemistry, Physical
Yuanyuan Lu, Xiuting Li, Archana Kaliyaraj Selva Kumar, Richard G. Compton
Summary: Single-entity electrochemistry measurements were used to compare the electrocatalysis of the oxygen reduction reaction (ORR) by multiwalled carbon nanotubes (MWCNTs) or amino-functionalized multiwalled carbon nanotubes (MWCNTs-NH2). The evidence showed that the electroactive surface oxygen functionality played the most important role in the catalysis process, not the nitrogen content.
Article
Chemistry, Physical
Archana Kaliyaraj Selva Kumar, Yuanyuan Lu, Richard G. Compton
Summary: The use of carbon nanotubes (CNTs) as electrocatalysts is analyzed in this paper. The limitations of using voltammetry based on CNT-modified electrodes are explained, and the role of mass transport and electrode kinetics in dictating the voltammetric responses is discussed. The paper advocates for the use of single-entity electrochemistry as a complement or potential replacement for ensemble voltammetry, emphasizing the importance of purity in CNT voltammetry.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2022)
Article
Chemistry, Analytical
Haotian Chen, Yuqi Chen, Richard G. Compton
Summary: In this study, the voltammetry of electrochemically reversible couples, particularly the Ag/AgBr/Br(-) redox couple, was investigated computationally and experimentally. The voltammetric waveshape was characterized and analyzed to understand the electrode reactions involving solution and solid phase reactants, revealing the presence of apparent transfer coefficients significantly exceeding unity.
ANALYTICAL CHEMISTRY
(2023)
Article
Chemistry, Physical
Valentin Mirceski, Rubin Gulaboski, Richard G. Compton
Summary: A theoretical study on the electrode mechanism in square-wave voltammetry (SWV) is presented, where the electrode reaction (E) is preceded by a chemical reaction solely occurring at the electrode surface (Chet). Mathematical solutions in the form of integral equations derived by Laplace transforms are provided for the surface concentration of all species involved in the electrode mechanism, allowing the simulation of the voltammetric response. It is demonstrated that SWV can differentiate between the common CE mechanism and the current C-hetE mechanism, which is relevant for various electrocatalytic processes.
JOURNAL OF PHYSICAL CHEMISTRY C
(2023)
Article
Electrochemistry
Richard G. Compton, Stanislav V. Sokolov
Summary: The essential need for expert electrochemists is highlighted in various examples, such as the use of rotating electrodes and impedance spectroscopy, where non-experts using these techniques in a black box mode are likely to face disappointment or embarrassment.
JOURNAL OF SOLID STATE ELECTROCHEMISTRY
(2023)
Article
Materials Science, Multidisciplinary
Yuanmin Zhang, Yuqi Chen, Sonia Contera, Richard G. Compton
Summary: Poly(3,4-ethylenedioxythiophene) (PEDOT), a conducting polymer, is used to coat metal neural electrodes for improved performance. However, PEDOT-coated electrodes often suffer from mechanical instability. This study systematically evaluates the electropolymerization and surface morphology of PEDOT:PSS, optimizing the deposition for recording neural electrodes. The modified electrodes demonstrate good electrochemical performance without triggering redox reactions.
ACS APPLIED POLYMER MATERIALS
(2023)
Article
Agriculture, Multidisciplinary
Joseph R. Elliott, Joseph Cortvriend, Giovambattista Depietra, Colin Brennan, Richard G. Compton
Summary: This study reports the uptake of a lipophilic fungicide into living leaves of young maize from droplets of a suspension concentrate. The coffee-ring effect during fungicide formulation drying and the fungicide particle distribution are studied. A simple, two-dimensional model of uptake is developed, which leads to a reservoir of cuticular fungicide. The model allows inference of physicochemical properties for fungicides inside the cuticle.
ACS AGRICULTURAL SCIENCE & TECHNOLOGY
(2023)
Article
Chemistry, Analytical
Haotian Chen, Enno Katelhon, Richard G. Compton
Summary: Physics-informed neural networks are applied to model the mass transport in rotating disk electrodes (RDEs), which are widely used in electroanalysis. The accuracy of the PINN approach is verified quantitatively through 1D simulations, showing comparable results with finite difference simulations and analytical equations under the Levich approximation for cyclic voltammetry and chronoamperometry. Moreover, the PINN approach allows for consideration of smaller Schmidt numbers and reveals the edge effect in RDEs due to nonuniform accessibility and radial diffusion. This extended theory demonstrates that PINNs can serve as an easier and more powerful substitute for conventional methods in analyzing RDEs.
ANALYTICAL CHEMISTRY
(2023)
Article
Engineering, Environmental
Yuxin Guo, Yuanyuan Lu, Kamel Mohamed Eltohamy, Chunlong Liu, Yunying Fang, Yajing Guan, Boyi Liu, Jiao Yang, Xinqiang Liang
Summary: This study evaluated the contribution of different-sized biogas slurry-derived colloids to plant available P uptake and phosphatase response. The results indicated that the addition of nanosized colloids can increase the bioavailability of colloidal P and plant biomass.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Article
Chemistry, Multidisciplinary
Minjun Yang, Christopher Batchelor-McAuley, Samuel Barton, Rosalind E. M. Rickaby, Heather A. Bouman, Richard G. Compton
Summary: Fluoroelectrochemical experiments reveal that the presence of a CaCO3 shell in the naturally calcifying coccolithophore Coccolithus braarudii provides protection against extracellular oxidants, as indicated by a longer time required for the switch-off of their chlorophyll signal compared to deshelled counterparts. This suggests that calcification offers survival advantages in radical-rich seawater.
Article
Chemistry, Multidisciplinary
Haotian Chen, Samuel Barton, Minjun Yang, Rosalind E. M. Rickaby, Heather A. Bouman, Richard G. Compton
Summary: A combination of fluoro-electrochemical microscopy and neural network technology can accurately distinguish different taxonomies of marine phytoplankton, providing a flexible and highly accurate solution for phytoplankton classification and autonomous ocean monitoring.
Article
Chemistry, Physical
Valentin Mirceski, Rubin Gulaboski, Richard G. Compton
Summary: A theoretical study is presented on an electrode mechanism involving a chemical reaction (C-het) occurring solely at the electrode surface (E), under conditions of square-wave voltammetry (SWV). The study derives rigorous mathematical solutions using Laplace transforms, allowing for explicit recurrent formulas for simulating the voltammetric response. The theory predicts that the chemical reaction starts at the beginning of the voltammetric experiment, disregarding its occurrence in the short time period between inserting the electrode in the solution and starting the experiment. SWV is shown to differentiate between the CE mechanism, involving a homogeneous chemical reaction near the electrode, and the ChetE mechanism, relevant for electrocatalytic processes involving enzymes and/or noble-metal nanoparticles.
JOURNAL OF PHYSICAL CHEMISTRY C
(2023)
Article
Chemistry, Analytical
Xinmeng Fan, Christopher Batchelor-McAuley, Minjun Yang, Richard G. Compton
Summary: The kinetics of calcite dissolution at the single particle scale are determined, showing that the dissolution rate of particulate minerals is controlled by the saturated calcite surface in local equilibrium with dissolved Ca2+ and CO32- ions, and further influenced by the diffusive transport of these ions away from the surface. Previous research assumptions are revisited and inconsistencies due to surface-controlled reactions are emphasized. These findings have implications for simulating climate change in the ocean.
ACS MEASUREMENT SCIENCE AU
(2022)
Article
Agriculture, Multidisciplinary
Joseph R. Elliott, Richard G. Compton
Summary: A mathematical model for the uptake of lipophilic agrochemicals from dispersed spherical particles within a formulation droplet across the leaf cuticle is presented. Two potential uptake pathways are identified and investigated through numerical simulation, highlighting the factors that influence the absorption process.
ACS AGRICULTURAL SCIENCE & TECHNOLOGY
(2022)
Article
Chemistry, Physical
Dariusz Guziejewski, Leon Stojanov, Zuzanna Zwierzak, Richard G. Compton, Valentin Mirceski
Summary: The recently introduced technique of square-wave chronoamperometry (SWCA) and its improved version, multi-amplitude square-wave chronoamperometry (MA-SWCA), allow for the fast and reliable estimation of kinetic parameters within a single experiment by progressively increasing the height of potential pulses.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2022)
Article
Chemistry, Multidisciplinary
Alexander M. Prophet, Kritanjan Polley, Gary J. Van Berkel, David T. Limmer, Kevin R. Wilson
Summary: The oxidation kinetics of iodide by ozone at the air-water interface is studied in single microdroplets. Molecular simulations and kinetic modeling are used to understand the underlying multiphase mechanism.
Article
Chemistry, Multidisciplinary
Rong Zhang, Jiajing Lan, Fei Wang, Shumei Chen, Jian Zhang
Summary: By utilizing 1,1'-ferrocene dicarboxylic acid as a chelating and surface protection ligand, we have synthesized multi-nuclear indium oxide clusters with varying nuclear sizes, including heptanuclear and thirteen-nuclear clusters. These clusters possess labile coordination sites, allowing for structural modification and self-assembly, resulting in the formation of various cluster structures.
Article
Chemistry, Multidisciplinary
Hui Wang, Hui Liu, Mingsen Wang, Jiaheng Hou, Yongjun Li, Yuancheng Wang, Yingjie Zhao
Summary: Two supramolecular complexes were prepared using CBs and M1, and their single-crystal structures were analyzed by SCXRD. The unexpected 1:2 self-assembly structure between M1 and CB[8] was discovered for the first time. These complexes exhibit unique photophysical properties and provide valuable information about the structure and photophysical properties of supramolecular complexes.
Article
Chemistry, Multidisciplinary
Chang-Hee Lee, Sookil Park, Sanggil Kim, Ji Young Hyun, Hyun Soo Lee, Injae Shin
Summary: The epidermal growth factor receptor (EGFR) is a cell-surface glycoprotein involved in cell proliferation and tumor development. This study used a fluorescently labeled EGFR to investigate its time-dependent endocytosis in live cells and found that appended glycans affect EGFR internalization. Additionally, the study detected sialic acid residues attached to EGFR on the live cell surface using FRET-based imaging. This research provides valuable insights into the cellular functions of EGFR.
Article
Chemistry, Multidisciplinary
Subhankar Sahu, Lokesh Kumar, Sumita Das, Dipti Gupta, Ruchi Anand
Summary: This study proposes a strategy that combines organic electronics with biosensor scaffolds to create a compact device for monitoring environmental aromatic pollution. By coupling biosensing protein MopR with an organic electrochemical transistor (OECT), a sensor module capable of efficient detection of phenol was designed. Exclusive phenol detection with minimal loss of sensitivity could be achieved in complex pollutant mixtures and real environmental samples.
Review
Chemistry, Multidisciplinary
Changseok Lee, Hyung-Joon Kang, Sungwoo Hong
Summary: The formation of C-N bonds through hydroamination reactions catalyzed by nickel hydrides has been a topic of recent interest. This approach offers a way to efficiently transform a variety of alkene and alkyne substrates into compounds enriched with C-N bonds. The review provides a concise overview of the underlying reaction mechanisms and aims to stimulate further progress in NiH-catalytic techniques and catalyst design.
Article
Chemistry, Multidisciplinary
Yueci Wu, Lu-Lu Sun, Hai-Hao Han, Xiao-Peng He, Weiguo Cao, Tony D. James
Summary: Drug-induced liver injury (DILI) is a common cause of acute liver failure in the USA and Europe, but most cases can be recovered or prevented by discontinuing the offending drug. Recent research has found that peroxynitrite (ONOO-) can be used as a potential indicator for early diagnosis of DILI, and there is an urgent need to establish a method to detect and track peroxynitrite in DILI cases. In this study, a FRET-based nano fluorescent probe CD-N-I was developed, which showed high selectivity and sensitivity in detecting peroxynitrite. The probe successfully detected exogenous peroxynitrite in live cells and endogenous peroxynitrite in APAP-induced liver injury of HepG2 cells.
Article
Chemistry, Multidisciplinary
Dmitry L. Lipilin, Mikhail O. Zubkov, Mikhail D. Kosobokov, Alexander D. Dilman
Summary: This article describes a direct photocatalytic method for the thiolation of unprotected acids, which was previously challenging. By using a thionocarbonate reagent with an N-O bond, the efficient conversion of carboxylic acids to thiols is achieved.
Article
Chemistry, Multidisciplinary
Jason Malenfant, Lucille Kuster, Yohann Gagne, Kouassi Signo, Maxime Denis, Sylvain Canesi, Mathieu Frenette
Summary: Raman microscopy can reveal compound-specific vibrational fingerprints without sample preparation. The combination of efficient theoretical calculations and a user-friendly software can accurately predict peak positions and provide match scores to assist with structure determination.
Article
Chemistry, Multidisciplinary
Jayoh A. Hernandez, Paul S. Micus, Sean Alec Lois Sunga, Luca Mazzei, Stefano Ciurli, Gabriele Meloni
Summary: Essential trace metals play crucial roles in the survival and virulence of bacterial pathogens. Helicobacter pylori requires nickel for colonization and persistence in the stomach, and NixA is an essential nickel transporter in this process. This study characterizes the selectivity and electrogenic nature of NixA-mediated nickel transport.
Article
Chemistry, Multidisciplinary
Tarali Devi, Kuheli Dutta, Jennifer Deutscher, Stefan Mebs, Uwe Kuhlmann, Michael Haumann, Beatrice Cula, Holger Dau, Peter Hildebrandt, Kallol Ray
Summary: This study emphasizes the importance of subtle electronic changes and secondary interactions in the stability of biologically relevant metal-dioxygen intermediates. It also shows that the role of the chloride ligand in stabilizing the Fe-III-(OOBu)-Bu-t moiety can extend to other anions, including the thiolate ligand.
Article
Chemistry, Multidisciplinary
Jacqueline R. Santhouse, Jeremy M. G. Leung, Lillian T. Chong, W. Seth Horne
Summary: By studying the folding kinetics and mechanism of the BdpA sequence, researchers found that altering the backbone connectivity can affect protein folding. This suggests that protein mimetic chains have a significant degree of plasticity in transitioning between unfolded and folded states.
Article
Chemistry, Multidisciplinary
Divanshu Gupta, Ralf Einholz, Holger F. Bettinger
Summary: This study presents the first direct spectroscopic evidence of a cyclic seven-membered iminoborane. Compared to linear amino-iminoboranes, this cyclic iminoborane exhibits weakened bond strength and lower Lewis acidity value. The study suggests that the reduced ring strain of cyclic iminoborane prevents nitrogen fixation but allows facile (2 + 2) cycloaddition reaction with C2H4.
Article
Chemistry, Multidisciplinary
Renny Mathew, Aniruddha Mazumder, Praveen Kumar, Julie Matula, Sharmarke Mohamed, Petr Brazda, Mahesh Hariharan, Brijith Thomas
Summary: This study reveals the packing arrangement of partially disordered nitro-perylenediimide (NO2-PDI) using a synergistic approach that combines 3D ED, ssNMR, and DFT techniques. By overcoming these challenges, this methodology opens up new avenues for material characterization, driving exciting advancements in the field.
