Article
Polymer Science
Tahmineh Barzegar, Shadi Hassanajili
Summary: A new method of fabricating thin film composite (TFC) membranes was presented using a one-step co-casting technique. The addition of SiO2 nanoparticles to the PEBAX matrix affected the microstructure of the membranes and enhanced the CO2/CH4 selectivity.
JOURNAL OF APPLIED POLYMER SCIENCE
(2022)
Review
Biotechnology & Applied Microbiology
Harshita Jain, Manoj Chandra Garg
Summary: Osmosis is being applied in membrane technologies like Forward Osmosis and Pressure-Retarded Osmosis, with a focus on thin-film nanocomposite membranes for enhanced selectivity and permeability in water treatment. This helps meet the increasing global demand for water purification.
ENVIRONMENTAL TECHNOLOGY & INNOVATION
(2021)
Article
Chemistry, Multidisciplinary
Yan Xue Xue, Fei Fei Dai, Qian Yang, Jian Hua Chen, Qiao Jing Lin, Li Jun Fang, Wei Wei Lin
Summary: Phenol and its derivatives are important chemical materials, but they are toxic and carcinogenic. Recovery of phenol from wastewater is challenging. In this study, a hybrid membrane containing PEBA matrix and HZIF-8 fillers was prepared. The presence of PS on the surface of HZIF-8 and the imidazole ring skeleton in ZIF-8 enhanced the interaction between HZIF-8 and phenol molecules. The PEBA/HZIF-8-10 membrane showed promising pervaporation performance at 80 degrees C and 0.2 wt % feed phenol concentration.
Article
Chemistry, Physical
Feifei Li, Mingyue Wang, Jinming Zhang, Xingtao Lin, Dazhi Wang, Weijie Cai
Summary: In this study, a sandwich-type Co core@shell catalyst (SiO2@Co@CeO2) was synthesized and showed outstanding activity and stability in the CO2 reforming of ethanol compared to the Co-SiO2 catalyst. The catalyst exhibited a bi-functional mechanism involving active sites on the CeO2 shell. The high dispersion and stable Co-ceria interface area contributed to the continuous cleaning of coke.
APPLIED CATALYSIS A-GENERAL
(2022)
Article
Engineering, Chemical
B. Sasikumar, Sanjay Bisht, G. Arthanareeswaran, A. F. Ismail, M. H. D. Othman
Summary: The incorporation of an amine group in S/ZIF-8 nanofillers enhances the interaction with PSf matrices, improving gas separation performance. The addition of nanofillers significantly enhances gas separation performance due to their high surface area.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Article
Chemistry, Multidisciplinary
Mengyu Yan, Jing Yang, Ruihua Mu, Yingming Guo, Xinshui Cui, Jinghua Song
Summary: To overcome the poor performance and poor hydrothermal stability of silica membranes in industrial gas treatments, a new membrane preparation method involving methyl group modification and nickel-cobalt doping was developed. The results showed that the nickel-cobalt-doped methyl-modified silica membranes exhibited high hydrogen permeance, hydrogen/carbon dioxide permselectivity, and excellent hydrothermal stability.
JOURNAL OF CO2 UTILIZATION
(2023)
Article
Chemistry, Physical
Yu-Shih Lin, Jia-Yun Tu, De-Hao Tsai
Summary: This study demonstrates a facile aerosol-based method to prepare hybrid nanostructures for catalyzing steam-promoted CO2 reforming with methane. The resulting NiPdOx-CeO2 nanoparticles deposited on SiO2 nanoparticle clusters exhibit superior catalytic performance at low temperatures, with high turnover frequency, tunable H2/CO ratio, and long-term operation stability. Incorporating SiO2 nanoparticle clusters as support material helps to enhance the dispersion of active metals and suppress metal sintering.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Physical
Elmira Velayi, Reza Norouzbeigi
Summary: Superhydrophobic nanocomposite mesh membranes were successfully constructed using a scalable spray deposition method without the need for low surface energy modifiers. The main fabrication parameters, including spray solution concentration, SiO2:ZnO mass ratio, and epoxy resin to total nanoparticles mass ratio, were studied using a Box-Behnken design to optimize the permeation flux of the membranes. The results showed that increasing spray solution concentration led to decreased oil flux due to thicker coatings, while the permeation flux first decreased and then slowly increased with an increase in epoxy resin content. The best-performing membrane exhibited high chloroform flux and separation efficiency with specific fabrication parameters.
APPLIED SURFACE SCIENCE
(2023)
Article
Thermodynamics
Taewoo Lee, Sungyup Jung, Ki-Hyun Kim, Eilhann E. Kwon
Summary: The utilization of CO2 as a raw feedstock during catalytic pyrolysis of pine bark led to an acceleration of gas-phase reactions and suppressed coke formation. The synergistic effect of CO2 and Ni/SiO2 in catalytic pyrolysis was found to be an advanced technical option for production of syngas under favorable conditions.
Article
Engineering, Environmental
Mingyue Wang, Feifei Li, Jiale Dong, Xingtao Lin, Xianyun Liu, Dazhi Wang, Weijie Cai
Summary: This study successfully prepared MOF derived CoCeOx nanocomposite as a catalyst for ethanol dry reforming, showing high conversion rate of ethanol and stability, with low production of byproducts.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Review
Biochemistry & Molecular Biology
Gorkem Memisoglu, Raghavan Chinnambedu Murugesan, Joseba Zubia, Aleksey G. Rozhin
Summary: Graphene, a two-dimensional hexagonal honeycomb carbon structure, is widely used in membrane technologies due to its unique properties. Incorporating nanoparticles like carbon nanotubes and metal oxide into graphene membranes can improve photocatalysis in water treatment systems. Developing sustainable and environmentally friendly applications is crucial for new and groundbreaking water treatment systems.
Article
Polymer Science
Mahmut Tas, Umar Gishiwa Musa, Ifty Ahmed, Fang Xu, Christopher Smartt, Xianghui Hou
Summary: This study developed icephobic nanocomposite electrospun membranes for outdoor electronic equipment, providing high electromagnetic shielding efficiency along with superhydrophobic and icephobic performance. Surface modification using fluorinated silane functionalised SiO2 nanoparticles achieved superhydrophobicity and reduced ice adhesion strength. Addition of magnetite nanoparticles showed high magnetic response and electromagnetic shielding efficiency.
Article
Polymer Science
Rosalin Rath, Piyush Kumar, Lakshmi Unnikrishnan, Smita Mohanty, Sanjay K. K. Nayak
Summary: The aim of this study is to fabricate a ternary hybrid nanocomposite membrane by incorporating low-cost silane functionalized silica nanoparticles (AMPS) into the mixture of Nafion and PVDF-co-HFP, followed by sulfonation. The physicochemical characterizations confirmed the hydrophilic and ion exchange properties of the sulfonated PVDF-co-HFP-AMPS-Nafion (SPAN) membranes. These unique SPAN membranes exhibit improved proton conductivities and optimum methanol permeability, making them suitable for methanol fuel cells.
JOURNAL OF POLYMER RESEARCH
(2023)
Article
Energy & Fuels
Riyadh Ramadhan Ikreedeegh, Muhammad Tahir
Summary: A well-designed 2D/2D graphene oxide modified polymeric graphitic carbon nitride nanosheets composite (g-C3N4-GO) was investigated for photocatalytic dry reforming of methane via CO2 into syngas under visible light system. By varying the GO content, the nanocomposite exhibited enhanced CO and H2 production. The study reveals the role of GO nanosheets as electronic conductive channels for efficient transfer and separation of photo-generated electron-hole pairs, improving the DRM process for syngas production.
Article
Chemistry, Multidisciplinary
Zahra Rezaee, Toraj Mohammadi, Omid Bakhtiari
Summary: In this study, nanocomposite membranes with uniform dispersion of amorphous PANI nanofibers were prepared using different concentrations of Pebax 1657 and PANI. The membranes exhibited defect-free structures and lower crystallinities. As the nanofiber loading increased, the CO2 permeability and selectivity of the membranes increased, surpassing the Robeson upper bound limit and approaching the values in 2008. The CO2 permeability and ideal CO2/CH4 selectivity of the nanocomposite membrane loaded with 10 wt.% PANI nanofibers increased to 121.2 Barrer and 33, respectively, showing increments of 64% and 40%.
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
(2023)
Review
Engineering, Environmental
Romina HMTShirazi, Toraj Mohammadi, Amir Atabak Asadi, Maryam Ahmadzadeh Tofighy
Summary: Protecting freshwater resources and preventing water contamination are critical worldwide issues. Recent studies have focused on the potential of electrospun nanofiber materials as membranes for water reclamation, which have shown promising results.
JOURNAL OF WATER PROCESS ENGINEERING
(2022)
Article
Engineering, Chemical
Sanaz Ghiasi, Toraj Mohammadi, Maryam Ahmadzadeh Tofighy
Summary: This study focused on the removal of boron from water using hybrid nanofiltration thin film composite hollow fiber membranes. The researchers fabricated nanocomposite PVC HF membranes containing bentonite and LDH nanoparticles as adsorbents, and found that LDH interacts better with PVC polymeric chains and results in more hydrophilic membranes with better performance. The fabricated membranes containing LDH also have lower MWCO and more uniform pore size distribution, making them better options as support for the TFC layer formation to fabricate NF TFC membranes. The NF TFC membranes containing LDH exhibited better performance in boron removal compared to those containing bentonite.
JOURNAL OF MEMBRANE SCIENCE
(2022)
Article
Chemistry, Multidisciplinary
Sepideh Roshdi, Norollah Kasiri, Javad Ivakpour, Seyed Hassan Hashemabadi
Summary: This study numerically investigates the effect of open hole area (OHA) on the performance of distillation trays. The results show that increasing OHA leads to an increase in froth density, clear liquid height, and wet pressure drop, while reducing froth height. The efficiency and entrainment values of different trays with varying OHAs are compared using Fr number and air dynamic pressure, and the tray with 14% OHA is found to have the lowest values. Pure hydrodynamic analysis can be used to qualitatively study the effects of geometric changes on entrainment and efficiency.
Review
Polymer Science
Elham Valamohammadi, Fatemeh Behdarvand, Toraj Mohammadi, Maryam Ahmadzadeh Tofighy, Zohreh Moghiseh
Summary: Polymeric membranes used in wastewater treatment and desalination show decreased efficiency over time. Polymer nanocomposite membranes (PNMs) with carbon nanotubes (CNTs) can improve permeability and antifouling properties, while also enhancing other physicochemical characteristics.
Article
Chemistry, Multidisciplinary
Fariba Sadat Kamelian, Fereshteh Naeimpoor, Toraj Mohammadi
Summary: This study investigates the efficient fermentation of high glucose and xylose levels via an innovative two-stage fermentation-pervaporation process. The use of immobilized Zymomonas mobilis and Pichia stipitis in a sequential-co-immobilized culture improves bioethanol productivity and reduces inhibitions. The study also fabricates a tubular superhydrophobic silicalite-1/PDMS pervaporative membrane to reduce inhibitions. The results show improved xylose conversion and ethanol productivity, making it a robust integrated process for second-generation bioethanol production.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2023)
Article
Biochemistry & Molecular Biology
Soha Habibi, Toraj Mohammadi, Romina HMTShirazi, Fatemeh Atyabi, Melika Kiani, Amir Atabak Asadi
Summary: In this study, double-layer CS/PVA/mupirocin (CPM) + CS/PVA/bupivacaine (CPB) electrospun nanofiber mats were prepared and crosslinked to optimize their water-resistant and biodegradation properties. The mats exhibited defect-free and interconnected nanofibers, providing a moist environment for efficient wound breathing and repairing. The highly porous mat absorbed wound exudates and allowed air permeability, reducing the chance of bacterial infections.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2023)
Article
Chemistry, Multidisciplinary
Zahra Rezaee, Toraj Mohammadi, Omid Bakhtiari
Summary: In this study, nanocomposite membranes with uniform dispersion of amorphous PANI nanofibers were prepared using different concentrations of Pebax 1657 and PANI. The membranes exhibited defect-free structures and lower crystallinities. As the nanofiber loading increased, the CO2 permeability and selectivity of the membranes increased, surpassing the Robeson upper bound limit and approaching the values in 2008. The CO2 permeability and ideal CO2/CH4 selectivity of the nanocomposite membrane loaded with 10 wt.% PANI nanofibers increased to 121.2 Barrer and 33, respectively, showing increments of 64% and 40%.
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Ali Behboudi, Toraj Mohammadi, Mathias Ulbricht
Summary: Surface-modified silver nanoparticles with different functional groups were synthesized and used as functional fillers in nanocomposite membranes for membrane bioreactors (MBRs). The modifications successfully immobilized the nanoparticles inside the membrane, reducing silver release. The modified nanoparticles exhibited enhanced antimicrobial activity and improved the antifouling properties of the membranes. This led to significant improvements in MBR performance, with increased flux, COD removal, and flux recovery.
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
(2023)
Article
Polymer Science
Negin Asadi Arbabi, Mahsa Ostadi, Fariba Sadat Kamelian, Toraj Mohammadi, Soheil Zarghami, Mona Dehghankar
Summary: Membrane bioreactors (MBRs) have gained attention in recent years as biotechnology-based wastewater treatment processes. However, the issue of membrane fouling/biofouling has limited their widespread use. A novel MIL-101(Cr) (MCPs)/polyethersulfone (PES) composite membrane was prepared using the phase inversion method. Adding 0.4 wt% MCPs significantly improved the hydrophilicity and pore characteristics of the membrane, resulting in reduced fouling/biofouling. The optimal composite membrane exhibited improved water flux, fouling resistance, and COD removal efficiency.
Article
Engineering, Chemical
Saeed Seraj, Toraj Mohammadi, Maryam Ahmadzadeh Tofighy
Summary: For the first time, lycopodium was incorporated into a polyvinylidene fluoride matrix to fabricate a lycopodium/polyvinylidene fluoride membrane for desalination applications. The membrane showed superior performance in terms of flux, salt rejection, water contact angle, and hydrophobicity compared to the neat polyvinylidene fluoride membrane. The presence of lycopodium with its hydrophobic nature and interconnected nano-channels in the membrane structure contributed to the improved flux and salt rejection.
FRONTIERS OF CHEMICAL SCIENCE AND ENGINEERING
(2023)
Article
Engineering, Chemical
Romina HMTShirazi, Azarakhsh Heidari, Toraj Mohammadi
Summary: Efficient separation of salts and heavy metal ions from wastewater is crucial for environmental protection and resource recovery. A new hollow fiber nanofiltration membrane (HFNM) with a highly positive charge was developed using HPEI self-assembly and MeI quaternization. The membrane exhibited superb rejection rates of Zn2+ and Mg2+, high water flux, and long-term stability, making it an effective solution for water purification.
Review
Engineering, Chemical
Hamed Faramarzi, Mehran Arzani, Abdollah Khosravanian, Hamidreza Mahdavi, Omid Bakhtiari, Toraj Mohammadi
Summary: The idea of using liquid membranes (LMs) for faster and facilitated transport is theoretically fascinating and promising for various applications. Among the different forms of LMs, supported liquid membranes (SLMs) have shown great selectivity and potential. This review comprehensively analyzes the current state of the art in SLMs for gas separation and discusses the design and application considerations when choosing between polymeric or ceramic supports. The principles of LMs, including their chronology, transport mechanism, and advantages and disadvantages are thoroughly examined, along with the different configurations suggested and their transition from the laboratory to practical implementation.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2023)
Review
Engineering, Environmental
Mona Dehghankar, Romina HMTShirazi, Toraj Mohammadi, Maryam Ahmadzadeh Tofighy
Summary: Metal-organic frameworks (MOFs) with highly flexible structures and extraordinary surface area are considered as promising materials for separation processes. However, the challenge lies in improving MOFs' stability and recyclability in membranes and overcoming membrane fouling. This article presents an overview of current progress in the combination of MOFs with polymeric membranes to address these issues.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Engineering, Chemical
Mohammad Hosein Moghadasin, Toraj Mohammadi, Maryam Ahmadzadeh Tofighy
Summary: This study reports the successful synthesis and integration of a NaP/GO nanohybrid into a PVA matrix to fabricate mixed matrix membranes. The membranes containing 0.5 wt% NaP/GO exhibited superior separation performance at an elevated temperature, with impressive separation factor and permeate flux.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2023)
Article
Engineering, Chemical
Setareh Karimzadeh, Romina Hmtshirazi, Toraj Mohammadi, Amir Atabak Asadi
Summary: In this study, an innovative nanofibrous membrane was fabricated using an electrospinning technique for the removal of Cu(II) and Pb(II) ions from contaminated water. The membrane exhibited high removal percentages, good modeling capability, high water flux, suitable reusability, and long-term stability, making it a potential filter for water treatment applications.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
