Article
Multidisciplinary Sciences
Atia Mahmoud, Alaa Fahmy, Abdelrahman Naser, Mohamed Abu Saied
Summary: Novel polyelectrolytic hybrid membranes with improved chemical and mechanical stability were prepared by blending different materials, and showed potential feasibility for polyelectrolyte membrane applications.
SCIENTIFIC REPORTS
(2022)
Article
Chemistry, Organic
Danyal Tahseen, Jemima R. Sackey-Addo, Zachary T. Allen, Joseph T. Anderson, Jordan B. McMurry, Christina B. Cooley
Summary: Fluorogenic atom transfer radical polymerization (ATRP) can detect initiator-dependent polymer formation through visible fluorescence activation of initially non-fluorescent polycyclic aromatic probe monomers. Hydrogenation of simple monomers reveals probe fluorescence, independent of polymerization, emphasizing the critical role of covalent enone attachment in fluorogenic probe activation. Bioorthogonal, protein-initiated fluorogenic ATRP allows for real-time visualization of polymer formation, showing potential as a robust, bioorthogonal method for biomolecular-initiated polymerization.
ORGANIC & BIOMOLECULAR CHEMISTRY
(2022)
Article
Polymer Science
Kosar Arab, Mahdi Tohidian, Amirsaeed Shamsabadi
Summary: In this study, nanocomposite polyelectrolyte membranes based on sulfonated polystyrene (SPS) and imidazole-2-acetic acid (Im) blend (SPSIm), incorporated with halloysite nanotubes (HNTs), were investigated for direct methanol fuel cell (DMFC) applications. The optimal degree of sulfonation for PS was selected based on hydrolytic stability, and SPS was blended with Im to improve proton conductivity and decrease methanol permeability. The addition of HNTs further reduced methanol crossover by introducing tortuous diffusion pathways. The resulting SPSIm/HNT membrane showed significantly decreased methanol permeability and improved membrane selectivity parameter, making it a potential candidate for DMFC applications.
JOURNAL OF APPLIED POLYMER SCIENCE
(2023)
Article
Chemistry, Physical
Loc T. Nguyen, Uyen N-P. Tran, Tam V-T. Mai, Trang T. Nguyen, Lam K. Huynh
Summary: This study investigates the chemical transformation of vinyl butyrate (VB) initiated by OH radicals in the atmosphere. The results show that H-abstraction from C-beta is the dominant reaction at low temperatures. The study also characterizes the secondary reactions and identifies NO2 as a new environmental concern.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2023)
Article
Engineering, Chemical
Hui Ye, Yining Zhou, Guodong Yang, Tengfei Yu, Yuzhong Zhang, Lizhi Zhao, Qingping Xin, Shurui Han
Summary: In this study, a pH-responsive membrane was developed for protein fractionation. The membrane successfully separated different milk proteins by controlling the pH value.
POLYMER ENGINEERING AND SCIENCE
(2022)
Article
Chemistry, Physical
Bolin Wang, Zhao Jiang, Ting Wang, Qi Tang, Mingde Yu, Tao Feng, Min Tian, Renqin Chang, Yuxue Yue, Zhiyan Pan, Jia Zhao, Xiaonian Li
Summary: The study focuses on designing favorable structures for active sites to narrow the gap in activity between Cu-based and noble-metal-based catalytic systems for vinyl chloride production. A method for fabricating Cu single-atom catalysts is reported, with gradual release of C-Cl derivatives promoting vacancy-defect generation and significantly reducing the activity gap. Competitive adsorption between acetylene and hydrogen chloride on the CuCl2V-N site was found to enhance catalytic performance, and DFT calculations revealed a specific reaction mechanism catalyzed on the vacancy-defect CuCl2V-N site.
Article
Chemistry, Physical
Di Liu, Bo Dong, Haibo Zhang, Yunji Xie, Jinhui Pang, Zhenhua Jiang
Summary: Semi-crystalline PEK-SPx membranes, consisting of a crystalline poly(ether ketone) main chain and densely sulfonated side chain, exhibit excellent dimensional stability and methanol resistance. PEK-SP20 membrane shows stable performance in pure methanol, making it suitable for direct methanol fuel cells.
JOURNAL OF POWER SOURCES
(2021)
Article
Materials Science, Multidisciplinary
Pankaj Kumar, Paramita Das
Summary: This study focuses on the preparation of composite proton exchange membranes based on sulfonated poly(vinyl alcohol) and exfoliated molybdenum disulfide. The membranes exhibit excellent selectivity and proton conductivity, making them suitable for direct methanol fuel cell applications.
ACS APPLIED POLYMER MATERIALS
(2023)
Article
Engineering, Environmental
Lukka Thuyavan Yogarathinam, Juhana Jaafar, Ahmad Fauzi Ismail, Pei Sean Goh, Arthanareeswaran Gangasalam, Mohamad Fahrul Radzi Hanifah, Kar Chun Wong, Mahesan Naidu Subramaniam, Jerome Peter
Summary: Nanostructured materials, such as polyaniline coated activated boron nitride, have been embedded in sulfonated poly (ether ether ketone) membranes to enhance proton conductivity and reduce methanol permeability in direct methanol fuel cell applications. The addition of functionalized boron nitride improves water uptake, ion exchange capacity, and chemical stability of the membranes, while significantly reducing methanol permeability. These nanocomposite membranes exhibit improved performance compared to commercial Nafion membranes, with higher open circuit voltage and power density.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Energy & Fuels
Chun Yik Wong, Wai Yin Wong, Kee Shyuan Loh, Mohammad Khalid, Wan Ramli Wan Daud, Kean Long Lim, Rashmi Walvekar
Summary: This study aimed to optimize the hydrolytic stability and ion conduction properties of a CS/SPVA membrane using the Taguchi method. The optimal conditions were found, and it was observed that incorporating inorganic fillers improved the thermomechanical properties while slightly reducing ionic conductivity. The CS/SPVA15-SGO sample showed the most optimized performance with a trade-off in ionic conductivity but exceptional hydrolytic stability.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2021)
Article
Materials Science, Multidisciplinary
Qiao Qiao, Zhi-Rong Feng, Ya-Ru Kong, Yu-Ping Wu, Xiao-Ming Ren
Summary: In this study, double-network hydrogels, with antifreezing and highly proton-conductive properties, were prepared for potential applications in flexible electrochemical devices. The CS-SO3H@PVA-1.5 hydrogel exhibited high proton conduction in a wide temperature range, excellent mechanical performance, and a potential application in extreme conditions.
ACS APPLIED POLYMER MATERIALS
(2022)
Article
Engineering, Environmental
Wei Wuen Ng, Hui San Thiam, Yean Ling Pang, Yun Seng Lim, Jianhui Wong, Lip Huat Saw
Summary: In this study, a self-healable proton exchange membrane (PEM) with methanol-blocking properties was successfully demonstrated by assembling sulfonated graphene oxide (SGO) with Nafion and poly(vinyl alcohol) (PVA). The hybrid membrane showed higher proton conductivity and better methanol-blocking effect compared to recast Nafion, and exhibited excellent performance in a single DMFC.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Engineering, Environmental
Lei Zhuang, Zhijun Jia, Yi Wang, Xiaoming Zhang, Suli Wang, Jing Song, Liangliang Tian, Tao Qi
Summary: This study develops a unique composite catalyst comprised of partial Pd nanoparticles and partial Pd single atoms for commercially viable direct methanol fuel cells. The catalyst exhibits remarkable activity and long-time stability in alkaline solution for the methanol oxidation reaction.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Green & Sustainable Science & Technology
Sandip Pal, Rakhi Mondal, Uma Chatterjee
Summary: Blending copolymers of PMMA-co-PAMPS with PVDF and S-PVDF in different weight ratios resulted in proton exchange membranes with high proton conductivity and low methanol permeability, showing promise for application in fuel cells. The blend membranes exhibited improved performance compared to Nafion (R) 117 membrane, making them a potential candidate for PEMFCs or DMFCs application.
Article
Energy & Fuels
Xinqi Yao, Shuaishuai Yuan, Chuandong Li, Lei Wang, Xinhai Yu, Pengfei Tian, Shan-tung Tu
Summary: Methanol steam reforming (MSR) is an efficient method for hydrogen production in fuel cell applications, and Pd-Zn catalysts are commonly used. To minimize Pd loading, PdZn nanoparticles (NPs) and Pd1/ZnO single-atom catalysts (SACs) were prepared through ball milling. The 2PdZn/Al2O3 NP catalyst exhibited excellent antioxidation ability and stability at 350 degrees C, with methanol conversion maintained at 99.5% and CO concentration below 0.71%. It showed promising potential for on-board hydrogen production for fuel cell vehicles.
Article
Polymer Science
Yahya Ebrahimabadi, Mohammad Mehrshad, Masoud Mokhtary, Mahdi Abdollahi
Summary: This study examines the sedimentation severity of CTBN with DEO in the presence of basic catalysts in epoxy resins, as well as the physical properties and curing kinetics of copolymer materials synthesized with pyridine as a catalyst. The results show an improvement in mechanical properties and a decrease in glass transition temperature of the copolymer when pyridine is used as a catalyst, with consistent curing kinetic values obtained through different methods.
JOURNAL OF APPLIED POLYMER SCIENCE
(2021)
Article
Materials Science, Characterization & Testing
Farzaneh Besharat, Mehrdad Manteghian, Mahdi Abdollahi
Summary: The study synthesized CaSO4 nanoparticles and fabricated polystyrene/calcium sulfate nanocomposites, analyzing them through SEM, TEM, and FTIR to characterize the materials. Results indicated differences in water diffusivity between PS/CaSO4 and pure PS samples.
POLYMERS & POLYMER COMPOSITES
(2021)
Article
Polymer Science
Farzaneh Besharat, Mehrdad Manteghian, Francesca Russo, Francesco Galiano, Alberto Figoli, Mahdi Abdollahi, Andrea Lazzeri
Summary: The study successfully prepared aligned/oriented PES/EOGO nanocomposite films at low-to-moderate EOGO loadings, with increased water permeability at 0.5 wt% nanoplatelet content but decreased at 1 wt%. Membrane samples processed with horizontal electric field exhibited lower PWP compared to vertical-field and No-field samples, with better dye molecule rejection at 0.1 wt% loading level.
POLYMERS FOR ADVANCED TECHNOLOGIES
(2021)
Article
Green & Sustainable Science & Technology
Golnoosh Abdeali, Mahdi Abdollahi, Ahmad Reza Bahramian
Summary: The research focuses on synthesizing nanoencapsulated Paraffin wax core/Thermoplastic elastomer Polyurethane shell with various particle size distribution for thermal energy storage. The findings demonstrate high thermal performance and potential for applications, indicating effective time-temperature history.
Article
Multidisciplinary Sciences
Ali Dinari, Mahdi Abdollahi, Majid Sadeghizadeh
Summary: A novel lignin-based nanogel was synthesized using atom transfer radical polymerization (ATRP) method, exhibiting dual temperature and pH responsiveness, showing potential as a safe and effective system for drug delivery in the future.
SCIENTIFIC REPORTS
(2021)
Article
Biochemistry & Molecular Biology
Ghazal Bashiri, Seyed Abbas Shojaosadati, Mahdi Abdollahi
Summary: The study successfully synthesized hybrid bovine serum albumin-gum arabic aldehyde (BSA-GAA) nanogels using periodate modified gum arabic as a cross-linker, and demonstrated their potential in drug delivery and biomedical applications through various analyses and experiments.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2021)
Article
Energy & Fuels
Sara Barati, Mohsen Mehdipourghazi, Mahdi Abdollahi, Khadijeh Hooshyari, Behnam Khoshandam
Summary: By incorporating TiO2 nanoparticles, the high-temperature porous nanocomposite membranes showed increased acid storage ability, leading to enhanced proton conductivity and high performance in fuel cell applications.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2021)
Article
Green & Sustainable Science & Technology
Bita Roshanravan, Habibollah Younesi, Mahdi Abdollahi, Mostafa Rahimnejad, Sang-Hyun Pyo
Summary: This research evaluated a microbial fuel cell (MFC) device equipped with a novel composite polymer-electrolyte membrane for simultaneous treatment of meat poultry wastewater and power generation. The results showed that the SPSU/MIL7 composite membrane performed better in the MFC, achieving higher voltage, power density, and COD removal rate, suitable for application in proton exchange membrane MFCs (PEMMFCs).
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Polymer Science
Mahdi Abdollahi, Masoud Akbari Hajiataloo
Summary: Homopolymerization of butadiene in 1,4-dioxane was conducted using molecular iodine in the presence of ACVA, resulting in heterotelechelic polybutadiene. The effect of reaction conditions on butadiene conversion was studied, showing the interactions between molecular iodine and butadiene. The study provided insights into the factors affecting the conversion rate of butadiene in this system.
JOURNAL OF POLYMER RESEARCH
(2021)
Article
Polymer Science
Seyedeh Mahboobeh Razavi Estakhrposhti, Mahdi Abdollahi
Summary: Random copolymers of poly (styrene-co-acrylonitrile) with different compositions of acrylonitrile and monocarboxylic acid functionality were successfully synthesized through reverse iodine transfer copolymerization. The kinetics results, reactivity ratios, and glass transition temperatures of the copolymers were analyzed and showed promising characteristics for potential applications.
JOURNAL OF POLYMER RESEARCH
(2021)
Article
Chemistry, Physical
Zohre Taherkhani, Mahdi Abdollahi, Alireza Sharif, Sara Barati
Summary: The PBI:PVPA polymer electrolyte membranes were fabricated and characterized for proton conductivity at high temperatures. The results indicate that these membranes have promising potential for high-temperature proton exchange membrane fuel cell applications.
SOLID STATE IONICS
(2021)
Article
Engineering, Chemical
Masoumeh Hasani, Hamidreza Soltani Panah, Mahdi Abdollahi
Summary: The solubility of carbon dioxide and methane in three miscible, glassy, and amorphous polymer blends and their homopolymer components was studied using the non-equilibrium theory for glassy polymer model. The obtained results showed good agreement between experimental and calculated values.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2021)
Article
Chemistry, Applied
Mahsa Gholami Enderati, Mahdi Abdollahi, Habibollah Younesi, Eshagh Khaki
Summary: The study focused on improving the CO2 affinity of blend membranes based on poly(ethylene oxide-b-amid 6) by adding acrylonitrile-based polymers and their amidoximated derivatives. The glassy nature of the additives increased the glass transition temperature of the polyethylene oxide domains, while decreasing the crystallinity and melting temperature of the polyamide domains. By optimizing the amount of additives, the permeability and selectivity of the membranes were enhanced, but excessive addition resulted in performance deterioration.
REACTIVE & FUNCTIONAL POLYMERS
(2021)
Article
Energy & Fuels
Bita Roshanravan, Habibollah Younesi, Mahdi Abdollahi, Mostafa Rahimnejad, Sang-Hyun Pyo
Summary: This study aims to synthesize a proton exchange membrane by incorporating a sulfonated MIL-100(Fe) metal-organic framework into the sulfonated polysulfone, and investigate its capability in organic degradation and electricity generation in microbial fuel cells. The results show that the composite membrane with sulfonated MIL-100(Fe) significantly improves proton conductivity and power output.
Article
Energy & Fuels
Maryam Pourmahdi, Mahdi Abdollahi, Alireza Nasiri
Summary: In this study, the effect of functional groups and initiation condition on the chemical modification of lignin via graft copolymerization method was investigated. It was found that lignin-based graft copolymers can improve the viscosity and thermal stability of water-based drilling fluids, as well as provide resistance to salt contamination.
GEOENERGY SCIENCE AND ENGINEERING
(2023)