Article
Nanoscience & Nanotechnology
Bryon W. Larson, Kira A. Thurman, Hyun Suk Kang, Andrew J. Ferguson, Jeffrey L. Blackburn, Mark Steger
Summary: The study shows dramatic changes in SWCNT sidewall defects when optically pumped in ambient conditions, leading to rapid decay in absorption and emission properties. Encapsulation or exciton quenching is an effective route for stabilizing against photodegradation.
ACS APPLIED NANO MATERIALS
(2022)
Article
Pharmacology & Pharmacy
Cecilia Espindola, Alejandro Javier Correa, Manuel Lopez-Lopez, Pilar Lopez-Cornejo, Eva Bernal, Jose Antonio Lebron, Francisco Jose Ostos, Mohammed Rafii-El-Idrissi Benhnia, Maria Luisa Moya
Summary: Research on flavonoids has grown significantly since their first therapeutic evidence in 1937. They have shown effective antioxidant activity in a wide range of human diseases. However, their applications have been limited due to their low solubility, poor absorption, and rapid metabolism. Encapsulating flavonoids in nanocarriers, such as carbon nanotubes, can improve their oral absorption and stability. This study investigated the encapsulation of 7-hydroxyflavone (7-HF) in different types of carbon nanotubes and studied its release at different pHs, simulating biological barriers.
Article
Polymer Science
Rinu Elizabeth Roy, R. S. Rajeev
Summary: PVDF-FSWCNT composites were prepared under different process conditions and with optimized functionalization of the nanotubes. The results showed that FSWCNAT-4, functionalized for 4 hours, can create a polar gamma phase in PVDF, leading to improved properties. The processing conditions also affect the appearance and transparency of the composite films, making them suitable for different applications.
POLYMERS FOR ADVANCED TECHNOLOGIES
(2023)
Article
Chemistry, Multidisciplinary
Arjun Menon, Peter W. Muenich, Pawel Wagner, David L. Officer, Dirk M. Guldi
Summary: The study describes a novel non-covalent electron donor-acceptor system involving metalloporphyrins and SWCNT, with microscopy and spectroscopy confirming efficient charge-transfer interactions. The fastest charge-separation and recombination dynamics were observed in 2-SWCNT, showing strong interactions and fast excited state decay.
Article
Chemistry, Physical
Enxiang Jiao, Ziru Sun, Hangzhen Zhang, Yifei Wu, Yuanbiao Liu, Kai Guo, Haijun Zhang
Summary: The development of thermal interface materials (TIMs) with excellent mechanical properties and efficient heat dissipation capability has become necessary for the next generation of integrated electronics and flexible devices. In this study, a covalently cross-linked cellulose nanofiber/MXene/single-walled carbon nanotube (CNF/MXene/SWCNT-KH550, K-CMC) nanocomposite film was successfully fabricated. This unique cross-linked ternary nanocomposite film greatly promoted load transfer and energy dissipation between components, thereby improving its mechanical properties.
APPLIED SURFACE SCIENCE
(2023)
Article
Mathematics, Interdisciplinary Applications
Zhen Wang, Weipeng Hu
Summary: This paper investigates the resonance behavior of carbon nanotube sensors under various perturbations, exploring the dynamic stability and complex behavior of nonlinear systems in nanotube devices. Theoretical analysis and numerical simulations are used to verify the research results.
CHAOS SOLITONS & FRACTALS
(2021)
Article
Chemistry, Physical
Chenmaya Xia, Daqi Zhang, Henan Li, Sheng Li, Haoming Liu, Li Ding, Xiyan Liu, Min Lyu, Ruoming Li, Juan Yang, Yan Li
Summary: SWNTs can be used to construct reusable SERS substrates with single molecule sensitivity and preservation of intrinsic properties, utilizing polyhedral gold nanocrystals to create effective hot spots. Using SWNTs to build SERS substrates may become a powerful strategy in various single molecule studies.
Review
Chemistry, Multidisciplinary
Marianna V. V. Kharlamova, Christian Kramberger
Summary: This paper explores the growth mechanism, structure, growth processes, growth kinetics, and optical, vibronic and electronic properties of metallocene-filled single-walled carbon nanotubes (SWCNTs). The procedures used to fill the nanotubes are described. The doping effects on metallicity-mixed and sorted SWCNTs filled with metallocenes are investigated through various spectroscopy techniques. The modification of the electronic properties of filled SWCNTs and the applications of metallocene-filled SWCNTs in various fields are discussed.
Article
Chemistry, Physical
Lipiao Bao, Oliver Martin, Tao Wei, M. Eugenia Perez-Ojeda, Frank Hauke, Andreas Hirsch
Summary: This study presents a straightforward reductive approach for the deoxygenation, activation, and functionalization of ultrashort single-walled carbon nanotubes. Reduction with potassium efficiently removes oxidized groups, recovers tube structures and properties, activates inert nanotubes, and allows for efficient covalent binding of different building blocks. Additionally, the first hydrogenation of nanotubes is achieved using a Birch-type reductive approach with water as a proton source and lithium as a reducing agent.
Review
Chemistry, Multidisciplinary
Jianping Zou, Qing Zhang
Summary: Single-walled carbon nanotubes (SWCNTs) are considered a promising electronic material for the future of electronics, with sub-10 nm SWCNT-field effect transistors (FETs) outperforming Si-based FETs. Recent advances in SWCNT electronics focus on fundamental electronic structures, carrier transport mechanisms, and metal/SWCNT contact properties, highlighting subthreshold switching properties for low-power device operations. Challenges and prospects for future SWCNT-based electronics include material preparation, device fabrication, and large-scale ICs integration.
Article
Biochemistry & Molecular Biology
Matthew M. Noor, Alinne L. R. Santana-Pereira, Mark R. Liles, Virginia A. Davis
Summary: Researchers are interested in whether nanomaterials with outstanding mechanical or electrical properties also possess antibacterial properties. The study showed that the purported antibacterial activity of SWNTs may only be effective against bacteria that are sensitized by the dispersant.
Article
Materials Science, Multidisciplinary
Karolina Z. Milowska, Maciej Krzywiecki, Mike C. Payne, Dawid Janas
Summary: Carbon nanomaterials such as graphene and carbon nanotubes have attracted significant interest due to their extraordinary properties, with the potential to play a key role in future applications. The sensitivity of carbon nanostructures to chemical stimuli allows for enhanced charge propagation capabilities, as seen in the impact of bromine addition on the electrical and thermoelectric properties of single-walled carbon nanotube films. Experimental results show a two orders of magnitude enhancement in thermoelectric capabilities through sonication-assisted introduction of Br2 into the SWCNT network, with computational analyses revealing the dopant's influence on electronic and charge transport properties.
MATERIALS & DESIGN
(2022)
Article
Biochemistry & Molecular Biology
Jin-Myung Choi, Hiroki Suko, Kyusun Kim, Jiye Han, Sangsu Lee, Yutaka Matsuo, Shigeo Maruyama, Il Jeon, Hirofumi Daiguji
Summary: This study improved the moisture and oxygen barrier ability as well as heat releasing capability in the passivation of perovskite solar cells (PSCs) by adding multi-walled carbon nanotubes to the epoxy resin used for encapsulation. The PSCs encapsulated with carbon nanotube-added resin exhibited more stable operation and only experienced a ca. 30% efficiency decrease over one week compared to the ca. 63% decrease in the reference devices.
Article
Chemistry, Physical
Ya Feng, Yuta Sato, Taiki Inoue, Ming Liu, Shohei Chiashi, Rong Xiang, Kazu Suenaga, Shigeo Maruyama
Summary: After self-bundling, the thermal conductivity of the carbon nanotube is significantly reduced, and the center temperature of the suspended nanotube increases, showing the effect of bundling on thermal conductivity.
Article
Chemistry, Physical
Javier A. B. Ramirez, Dmitry Krasnikov, Vladimir V. Gubarev, Ilya Novikov, Vladislav A. Kondrashov, Andrei Starkov, Mikhail S. Krivokorytov, Vyacheslav V. Medvedev, Yuriy G. Gladush, Albert G. Nasibulin
Summary: We propose a facile, cost-efficient, environmentally friendly, and scalable process to renew single-walled carbon nanotube membranes serving as extreme ultraviolet (EUV) protective pellicles. The method involves high-temperature treatment of the membrane to clean it without damaging the carbon nanotube structure, opening up possibilities for multiple membrane renovations.
Article
Chemistry, Physical
Meisam Ashrafivala, Seyed Borhan Mousavi, Saeed Zeinali Heris, Mohammad Heidari, Mousa Mohammadpourfard, Hassan Aslani
Summary: Wastewater recycling and reuse are particularly important in countries with water scarcity issues, and disinfection is a crucial step in achieving this goal. This research investigates the use of the advanced oxidation process combining UV and H2O2 for fecal coliform inactivation in industrial effluent. Optimal disinfection conditions were determined based on parameters such as pH, H2O2 concentration, and contact time. The results show that acidic conditions, increased H2O2 concentration, and longer contact time contribute to higher inactivation rates. The combined UV/H2O2 process is more effective than using UV or H2O2 alone and can meet irrigation standards.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Engineering, Chemical
Zahra Karimi Shoar, Hadi Pourpasha, Saeed Zeinali Heris, Seyed Borhan Mousavi, Mousa Mohammadpourfard
Summary: At CGSs, natural gas is heated by a heater to prevent hydrate formation in the throttle valve. Heat exchangers are essential in industrial processes and fouling was dynamically simulated in this study. Different operating conditions were evaluated for their effects on fouling growth.
CANADIAN JOURNAL OF CHEMICAL ENGINEERING
(2023)
Article
Energy & Fuels
Asma Gholami, Seyed Borhan Mousavi, Saeed Zeinali Heris, Mousa Mohammadpourfard
Summary: This research aims to reduce the COD and TOC from the used caustic effluent of the olefin unit of Ilam Petrochemical Company employing the electro-Fenton method. The affecting parameters on the COD and TOC removal rate were investigated, and an experimental design by response surface methodology based on the Box-Behnken method was considered. The optimal conditions for the electro-Fenton treatment were determined and proved to be effective in treating the spent caustic.
BIOMASS CONVERSION AND BIOREFINERY
(2023)
Article
Thermodynamics
Hadi Pourpasha, Saeed Zeinali Heris, Mousa Mohammadpourfard
Summary: This study investigated the effects of adding hydrophobic TiO2 doped MWCNTs on the heat transfer performance, BDV, and thermophysical properties of transformer oil. It is novel in its use of TiO2 doped MWCNTs nanoparticles synthesized in TO and comprehensive experimental investigation of nanofluid properties.
CASE STUDIES IN THERMAL ENGINEERING
(2023)
Article
Chemistry, Multidisciplinary
R. Ravandi, S. Zeinali Heris, S. Hemmati, S. Davaran
Summary: The aim of this research was to develop a self-healing dental nanocomposite and evaluate its mechanical properties, crack-healing, and self-healing longevity after water aging. Nanocapsules were synthesized as they are biocompatible for dental materials, and nanoclay was used as a filler to improve mechanical properties. The results showed that incorporating nanocapsules into the nanocomposite increased mechanical properties and achieved good self-healing efficiency, which was not affected by water aging.
MATERIALS TODAY CHEMISTRY
(2023)
Review
Thermodynamics
Mahyar Kargaran, Hamid Reza Goshayeshi, Hadi Pourpasha, Issa Chaer, Saeed Zeinali Heris
Summary: The use of oscillating heat pipe in photovoltaic-thermal systems can enhance the thermal and electrical efficiency of PV-T modules and prolong their lifespan. Incorporating advanced cooling techniques and utilizing nanofluids as coolants can further improve the overall system efficiency.
THERMAL SCIENCE AND ENGINEERING PROGRESS
(2022)
Article
Energy & Fuels
Mehrdad Zolfalizadeh, Saeed Zeinali Heris, Hadi Pourpasha, Mousa Mohammadpourfard, Josua P. P. Meyer
Summary: This study investigated the use of graphene nanoplate (GNP)/water nanofluids in a new shell-and-tube heat exchanger (STHE) and examined their impact on thermal efficiency, pressure drop, and heat transfer characteristics. The results showed that the addition of 0.06 wt.% GNP in the nanofluid improved the heat exchanger efficiency and heat transfer rate, but also increased pressure drops.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2023)
Article
Thermodynamics
Nazanin Karimi Bakhtiyar, Sama Esmaeili, Reza Javadpour, Saeed Zeinali Heris
Summary: This study aimed to investigate the influence of functionalized multi-walled carbon nanotubes (MWCNTs-COOH and MWCNTs-OH) on the performance of a novel indirect laboratory heater redesigned with a helical tube. The experiments showed that as the concentration levels of the nanofluids increased, the system's performance also improved. The study demonstrated the potential of using nanofluids in indirect bath heating to reduce thermal energy consumption and improve efficiency.
CASE STUDIES IN THERMAL ENGINEERING
(2023)
Article
Thermodynamics
Reza Nazerifard, Mousa Mohammadpourfard, Saeed Zeinali Heris
Summary: This paper investigates the conversion of refinery furnaces' flue gas into gasoline through the MTG process. The proposed integrated system comprises an organic Rankine cycle, an amine-based carbon capture unit, a methanol synthesis unit, and an MTG unit. The study evaluates the technical and economic aspects of the conversion process and optimizes the system to minimize gasoline production cost.
ENERGY CONVERSION AND MANAGEMENT
(2023)
Article
Thermodynamics
Zahra Hajimohammadi Tabriz, Mousa Mohammadpourfard, Gulden Gokcen Akkurt, Saeed Zeinali Heris
Summary: In this study, a new multigeneration system based on urban sewage bio-waste has been designed and evaluated for power, hydrogen, freshwater, and heating production. Various analyses have been conducted to assess the system's thermodynamic performance and environmental impact. The results show that the system can generate 17750 kW of power, produce 3180 kg/h of hydrogen and more than 18 l/h of freshwater, with energy and exergy efficiencies of 35.48% and 40.18%, respectively. The unit cost of total products is calculated as 13.05 $/GJ and the unit emission of carbon dioxide is 0.2327 t/MWh.
ENERGY CONVERSION AND MANAGEMENT
(2023)
Article
Chemistry, Physical
Saeed Zeinali Heris, Martin Etemadi, Seyed Borhan Mousavi, Mousa Mohammadpourfard, Bahman Ramavandi
Summary: The photodegradation of tetracycline antibiotics in aqueous solution using TiO2 nanoparticles, ZnO microparticles, and TiO2/ZnO composite under UV lamp was studied. The effects of different parameters such as initial concentration, medium pH, photocatalyst ratio, and flow rate were comprehensively investigated. The results show that increasing pH to 11 enhances the efficiency of tetracycline degradation, while higher flow rates lead to lower efficiency.
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
(2023)
Review
Thermodynamics
A. Mohammadian Soodmand, B. Azimi, S. Nejatbakhsh, H. Pourpasha, M. Ebrahimi Farshchi, H. Aghdasinia, M. Mohammadpourfard, S. Zeinali Heris
Summary: Thermal energy storage systems and phase change materials (PCMs) have gained significant attention worldwide for maximizing energy utilization and reducing dependence on fossil fuels. Computational fluid dynamics (CFD) studies on PCMs have been thoroughly evaluated in terms of materials, modeling, simulation, advantages, and disadvantages. The study discusses PCM applications in various areas, summarizes different geometries used in thermal energy storage systems, and investigates various PCM materials.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2023)
Article
Energy & Fuels
Rasoul Najafi Anamaq, Leyla Khani, Mousa Mohammadpourfard, Saeed Zeinali Heris, Guelden Gokcen Akkurt
Summary: Due to the global energy crisis and the negative environmental effects of fossil fuels, renewable energy sources and multigeneration systems have become alternative options for conventional thermodynamic systems. This research introduces a multigeneration system that utilizes solar energy for simultaneous generation of various products. The proposed system includes a solar energy collector, thermal energy storage tanks, organic Rankine and Kalina cycles for electricity generation, a multi-effect distillation unit for fresh water production, an electrolyzer for hydrogen production, and heat recovery units. The performance of the system is studied from various viewpoints using software simulations, and the results show improved efficiency and cost reduction with the addition of a thermosyphon unit to the refrigeration system.
Article
Multidisciplinary Sciences
Fatemeh Yousefi, Seyed Borhan Mousavi, Saeed Zeinali Heris, Samin Naghash-Hamed
Summary: The UV-shielding features of PMMA-based thin film coatings with TiO2 and ZnO nanoparticles were assessed. The concentration of nanoparticles in the hybrid-coated PMMA was found to affect the absorption in the UVA region. The optimal coatings for PMMA were 0.1 wt% TiO2, 0.1 wt% ZnO, and 0.025:0.025 wt% TiO2: ZnO nanohybrid.
SCIENTIFIC REPORTS
(2023)
Article
Chemistry, Physical
Yaghoub Mohammadfam, Saeed Zeinali Heris
Summary: This study investigates the impact of single, hybrid, and doped magnetic nanoparticles on the convective heat transfer capabilities of a water/ethylene glycol-based nanofluid under the influence of a magnetic field. The results show that the application of Fe3O4 and Fe3O4@MWCNT nanoparticles can increase the heat transfer capabilities of the nanofluid, while the application of MWCNT-Fe3O4 nanoparticles decreases the heat transfer capabilities. The performance index evaluation indicates that the use of nanofluids is effective, as all samples have a performance index greater than one.
SURFACES AND INTERFACES
(2023)
Article
Engineering, Chemical
Andrea Coletto, Pietro Poesio
Summary: Experiments and simulations were conducted to study the air volume fraction and hold-up in a bubble channel reactor. A new signal processing method was proposed to avoid the loss of bubble residence time. The results were in agreement with previous studies and a bubble-scale model was developed to explain the relationship between hold-up and air superficial velocity.
CHEMICAL ENGINEERING RESEARCH & DESIGN
(2024)
