Article
Polymer Science
Javad Yekrang, Habib Etemadi
Summary: In this study, nanocomposite membranes were fabricated by electrospinning polymers (PVC, TPU, PC) with varying levels of ?-alumina nanoparticles. SEM analysis revealed nanofiber diameters ranging from 155-491 nm. EDS and FTIR confirmed the presence of ?-alumina nanoparticles and characteristic chemical groups in the membranes. Contact angle tests showed improved hydrophilicity with decreasing contact angle as ?-alumina nanoparticles were incorporated. Mechanical tests demonstrated decreased tensile strength and strain with increasing nanoparticle content.
JOURNAL OF POLYMER RESEARCH
(2023)
Article
Engineering, Chemical
Habib Etemadi, Naser Ghasemian, Zahra Ghesmati, Milad Hermani
Summary: A novel polycarbonate nanocomposite membrane was prepared by incorporating iron oxide nanoparticles. The addition of Fe3O4 increased the hydrophilicity and porosity of the membrane. The Fe3O4 nanoparticles also enhanced the pore size and number on the membrane surface and resulted in a smoother surface. The PC/Fe3O4-0.5 membrane showed better antifouling properties with higher flux recovery ratios compared to the neat PC membrane.
POLYMER ENGINEERING AND SCIENCE
(2023)
Article
Biotechnology & Applied Microbiology
Feng Yang, Chenyi Wu, Yuanzhang Jiang, Lin Tan, Rui Shu
Summary: Due to the advantages of aesthetics, designability, convenient removal, and comfortable experience, invisible orthodontics (IO) have gained wide recognition and acceptance. However, most of the membranes used for IO only retain their shape and neglect other important functions such as antibacterial and antifouling activities. In this study, antibacterial composite membranes (ACMs) were manufactured with favorable transparency and excellent antibacterial ability. The bactericidal rates of ACMs against Staphylococcus aureus, Escherichia coli, and Streptococcus mutans were all above 99.99%. The amount of protein adhered to the surface of ACMs was also significantly low, indicating ideal antifouling performance. These multifunctional ACMs are expected to be promising alternatives for current IO treatments.
FRONTIERS IN BIOENGINEERING AND BIOTECHNOLOGY
(2023)
Article
Polymer Science
Habib Etemadi, Hamidreza Qazvini
Summary: The study prepared PVC/Al2O3 nanocomposite ultrafiltration membranes with different Al2O3 contents, with the 1.5 wt.% Al2O3 nanoparticles membrane showing higher porosity and hydrophilicity. FE-SEM images showed that more and larger pores were formed on the membrane surface with the addition of Al2O3.
Article
Polymer Science
Homayun Khezraqa, Habib Etemadi, Hamidreza Qazvini, Mehdi Salami-Kalajahi
Summary: Flat sheet polycarbonate/multi-walled carbon nanotube (PC/MWCNT) nanocomposite membranes with different nanoparticle contents were prepared using the phase inversion method. Membrane characteristics were analyzed, and membranes containing 0.1 wt% MWCNTs showed better hydrophilicity, porosity, PWF, and mechanical properties. Addition of 0.1 wt% MWCNTs led to significant improvement in fouling recovery ratio in filtration of humic acid and bovine serum albumin.
Article
Engineering, Biomedical
Monir Riasad Fadle Aziz, Lukasz Wlodarek, Faisal Alibhai, Jun Wu, Shuhong Li, Yu Sun, J. Paul Santerre, Ren-Ke Li
Summary: Myocardial fibrosis, resulting from myocardial infarction, alters cardiac electrophysiological properties and can lead to arrhythmias. A new bio-conductive epicardial patch has been developed and shown to synchronize cardiomyocytes and alleviate atrial fibrillation in rat hearts. This patch could potentially be a novel approach for the treatment of cardiac arrhythmias.
ADVANCED HEALTHCARE MATERIALS
(2023)
Article
Polymer Science
Alireza Yousefi, Habib Etemadi, Milad Hermani, Farid Aftabi, Ghader Hosseinzadeh
Summary: This study focuses on improving the performance of PVC membranes by adding different concentrations (0.5-1.5 wt.%) of polydopamine-modified alumina nanoparticles. The fabricated nanocomposite membranes were tested for the removal of oily wastewater in a cross-flow filtration system. Various characterization techniques were used to analyze the membranes, and it was found that the addition of 0.5 wt.% Al2O3-PDA nanoparticles resulted in increased hydrophilicity, porosity, and pure water flux. However, the mechanical strength of the membranes decreased by 33% when 1.5 wt.% Al2O3-PDA nanoparticles were added. The permeation flux of the PVC/Al2O3-PDA-0.5 sample reached 38.2 Lm(-2) h(-1) with a TOC content of 56.3 mg L-1.
JOURNAL OF INORGANIC AND ORGANOMETALLIC POLYMERS AND MATERIALS
(2023)
Article
Polymer Science
Diew Saijun, Phetdaphat Boonsuk, Watchanida Chinpa
Summary: Composite membranes were fabricated using recovered polycarbonate from waste compact discs, polysulfone, and chitin nanowhisker. The addition of polysulfone improved the alkaline resistance of the membranes. Furthermore, the incorporation of chitin nanowhisker enhanced the tensile properties, permeability, and hydrophilicity of the composite membranes, resulting in good pure water flux and rejection rate.
JOURNAL OF POLYMER RESEARCH
(2022)
Article
Polymer Science
Juraij Kandiyil, Suni Vasudevan, Sujith Athiyanathil
Summary: A new multifunctional polyurethane/montmorillonite-oxidized multi-walled carbon nanotube (PU/MMT) nanofibrous composite membrane with high flexibility, hydrophilicity, antifouling property, and dye adsorption capacity has been developed. The sample with 20 wt% Mt showed a minimum water contact angle of 57 degrees and exhibited high water flux, oil rejection, and flux recovery ratio. It selectively adsorbed cationic dye methylene blue (MB) from a dye mixture.
JOURNAL OF APPLIED POLYMER SCIENCE
(2023)
Article
Polymer Science
Ying-Chi Huang, Yu-Hsiang Huang, Li-Yun Chen, Chi-An Dai, Shenghong A. Dai, Ying-Hsiao Chen, Chien-Hsin Wu, Ru-Jong Jeng
Summary: This study demonstrated the development of recycling feasibility, monomers reactivity, and the chemical-recycled polymer properties from polycarbonate (PC) waste, resulting in the production of thermoplastic polyurethanes (TPUs) with improved elastomeric properties. The TPUs exhibited a unique phase separation morphology with domain sizes ranging from similar to 10 nm to similar to 25 nm, showing potential for applications in various fields.
Article
Engineering, Chemical
Habib Etemadi, Hamidreza Qazvini, Naser Hosseinnezhad Alishah
Summary: Ultrafiltration membranes were prepared from blends of polycarbonate (PC) and acrylonitrile-butadiene-styrene (ABS) using a non-solvent induced phase separation technique. Field-emission scanning electron microscopy (FESEM) revealed the formation of macrovoids and finger-like pores when ABS was added to the PC membrane. The blend membrane showed higher antifouling properties and increased removal of humic acid compared to the neat PC membrane.
DESALINATION AND WATER TREATMENT
(2021)
Article
Biochemistry & Molecular Biology
Benoit Rhone, Anouk Galtayries, Vincent Semetey
Summary: In this study, poly(ethylene glycol) (PEG) was successfully grafted onto polyurethane (PU) surfaces using a simple and efficient transurethanization reaction. The surface modification resulted in the formation of antiadhesive hydrophilic surfaces, which showed lower protein adsorption, cell, platelet, and bacterial adhesion compared to untreated surfaces. This study demonstrates the potential of the modified surfaces for biomedical applications.
MACROMOLECULAR BIOSCIENCE
(2023)
Article
Engineering, Environmental
Liangtao Pu, Yeming Xu, Qiancheng Xia, Jie Ding, Yanfeng Wang, Chao Shan, Di Wu, Quanxing Zhang, Guandao Gao, Bingcai Pan
Summary: By assembling ferroelectric BaTiO3 nanoparticles into conventional polyamide nanofiltration membranes and charging them, researchers have discovered that the polarized ferroelectric membrane shows higher permeability and rejection ratio for arsenic removal compared to common membranes and unpolarized membranes.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Engineering, Environmental
Meng Zhang, Shu Jiang, Xishou Guo, Xiaobin Tang, Langming Bai, Jinlong Wang, Han Zhang, Daliang Xu, Rui Wu, Luming Liu, Heng Liang
Summary: This study incorporated Fe3O4 nanoparticles into a polyethersulfone membrane to mitigate membrane fouling. The combination of a magnetic field and Fe3O4 nanoparticles enhanced the permeability and separation performance of the membrane. The optimization of the membrane preparation process resulted in a composite membrane with significantly enhanced antifouling capability.
JOURNAL OF WATER PROCESS ENGINEERING
(2023)
Article
Chemistry, Physical
Susan Davari, Mohammadreza Omidkhah, Simin Salari
Summary: In this study, polydopamine (PDA) was used to enhance the adhesion of titanium dioxide (TiO2) nanoparticles (NPs) onto polyethersulfone (PES) ultrafiltration membrane, leading to improved stability and antifouling properties. However, the coatings also resulted in decreased flux due to increased hydraulic resistance.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2021)
Article
Acoustics
Sahar Zinatloo-Ajabshir, Naser Ghasemian, Mehdi Mousavi-Kamazani, Masoud Salavati-Niasari
Summary: In this study, Nd2Zr2O7 nanostructures and nanocomposites were successfully fabricated using a sonochemical pathway with Morus nigra extract as a capping agent. The fabricated materials showed potential as nanocatalysts for propane-SCR-NOx, with the best sample achieving a 70% conversion of NOx to N-2. The Nd2Zr2O7-ZrO2 nanocomposite also exhibited lower CO emission compared to other samples.
ULTRASONICS SONOCHEMISTRY
(2021)
Article
Materials Science, Ceramics
Sahar Zinatloo-Ajabshir, Seyed Ali Heidari-Asil, Masoud Salavati-Niasari
Summary: The study introduces a novel sonochemical method to prepare ZnCo2O4/Co3O4 nanocomposite for efficient degradation of organic contaminants under visible radiation. The optimized sample exhibited high removal efficiency of various contaminants, excellent durability and reusability, making it a competitive catalyst for environmental remediation.
CERAMICS INTERNATIONAL
(2021)
Article
Chemistry, Physical
Hamed Safajou, Mojgan Ghanbari, Omid Amiri, Hossein Khojasteh, Farzad Namvar, Sahar Zinatloo-Ajabshir, Masoud Salavati-Niasari
Summary: A green and ecofriendly fabrication technique was employed to synthesize RGO/Cu nanocomposite, which showed high efficiency in degrading organic pollutants through photocatalytic performance.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Acoustics
Sahar Zinatloo-Ajabshir, Mahin Baladi, Masoud Salavati-Niasari
Summary: The study presents the fabrication of spindle-shaped PbWO4 nanostructure using sono-chemical method, showing excellent catalytic yield and durability, which has the potential to be an effective solution for water contamination issues.
ULTRASONICS SONOCHEMISTRY
(2021)
Review
Materials Science, Ceramics
Sahar Zinatloo-Ajabshir, Mehdi Mousavi-Kamazani
Summary: The review provides a comprehensive overview of current research progress on the application of mixed-metal oxides in solar photocatalysis for removal of undesirable contaminants, summarizing fabrication techniques, experimental outcomes, and factors influencing the photocatalytic process. Inspirational outlooks on prevailing challenges in this research area are also offered.
CERAMICS INTERNATIONAL
(2021)
Article
Materials Science, Ceramics
Atena Zonarsaghar, Mehdi Mousavi-Kamazani, Sahar Zinatloo-Ajabshir
Summary: CeVO4 nanostructures were successfully synthesized using a controlled hydrothermal method with hydrazine, cerium nitrate, and ammonium vanadate. By adjusting the reaction conditions and optimizing parameters such as solvents and surfactants, rod-shaped structures with suitable porosity were achieved. These nanostructures showed significant improvement in hydrogen storage capacity compared to products obtained with a different morphology.
CERAMICS INTERNATIONAL
(2021)
Article
Chemistry, Inorganic & Nuclear
Ghader Hosseinzadeh, Naser Ghasemian, Sahar Zinatloo-Ajabshir
Summary: The TiO2/graphene nanocomposite supported on clinoptilolite nanoplate prepared by hydrothermal method showed significantly higher photocatalytic degradation efficiency for nitenpyram insecticide under visible light, mainly due to the advantages of clinoptilolite and graphene, such as microporous structure and enhancement of effective surface area. The hydroxyl radicals were identified as the main active species responsible for the photocatalytic degradation of nitenpyram. This study provides a new insight for fabricating more effective zeolite and graphene-based nanocomposite photocatalysts for environmental remediation.
INORGANIC CHEMISTRY COMMUNICATIONS
(2022)
Article
Chemistry, Physical
Atena Zonarsaghar, Mehdi Mousavi-Kamazani, Sahar Zinatloo-Ajabshir
Summary: This study synthesized cerium vanadate nanoparticles using ammonium metavanadate and cerium (III) nitrate hexahydrate, and investigated the effects of different conditions on the nanostructures. Ultrasonic irradiation resulted in fine spherical nanoparticles, while a two-step process produced uniform spherical nanostructures. The spherical nanoparticles of cerium vanadate exhibited a high discharge capacity for hydrogen electrochemical storage.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Engineering, Electrical & Electronic
Atena Zonarsaghar, Mehdi Mousavi-Kamazani, Sahar Zinatloo-Ajabshir
Summary: In this study, cerium vanadate nanoparticles were synthesized using a co-precipitation method. The synthesized nanoparticles exhibited a spherical shape and showed stacking in some areas. These spherical nanoparticles of CeVO4 demonstrated a high energy storage capacity for hydrogen.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2022)
Article
Engineering, Chemical
Sahar Zinatloo-Ajabshir, Seyed Ali Heidari-Asil, Masoud Salavati-Niasari
Summary: The study introduces an efficient magnetic separable structure as a visible light photocatalyst for practical use to eliminate organic contaminants. The use of diverse saccharides as capping agents and fuels resulted in the successful fabrication of magnetic separable zinc-cobalt mixed-metal oxides as visible light photocatalysts. These nanostructures exhibited superb catalytic activity, with almost 94.3% of acid brown 14 being decomposed within 75 minutes, offering a feasible and eco-friendly approach for environmental remediation.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Acoustics
Kamran Mahdavi, Sahar Zinatloo-Ajabshir, Qahtan A. Yousif, Masoud Salavati-Niasari
Summary: This study focused on the fabrication of new photocatalytic nanocomposites (Dy2O3-SiO2) using a basic agent, tetraethylenepentamine (Tetrene), through a simple and efficient sonochemical approach. The fabricated nanocomposite exhibited sphere-shaped nanoparticles with a particle size ranging from 20 to 60 nm. It showed superior efficiency in decomposing various contaminants and hydroxyl radicals played a crucial role in the degradation process.
ULTRASONICS SONOCHEMISTRY
(2022)
Article
Materials Science, Ceramics
Sahar Zinatloo-Ajabshir, Erfan Shafaati, Ahmad Bahrami
Summary: In this study, environmentally friendly A2Ce2O7 nanostructures and cerium dioxide nanoparticles were synthesized using barberry extract and applied for the decomposition and elimination of hazardous contaminants in wastewater. The introduction of different trivalent elements significantly influenced the characteristics and catalytic performance of the samples.
CERAMICS INTERNATIONAL
(2022)
Article
Materials Science, Ceramics
Ghader Hosseinzadeh, Sahar Zinatloo-Ajabshir, Alireza Yousefi
Summary: Developing interfacial connections is an important strategy to improve the photocatalytic activity of graphene/p-n heterojunction systems. In this study, natural tragacanth mucilage was used as a surfactant to prepare a highly efficient ZnO-ZnBi2O4/graphene hybrid photocatalyst. The results showed that the hybrid photocatalyst exhibited significantly higher degradation efficiency compared to other samples, which could be attributed to the advantages of natural mucilage, such as uniform distribution of nanoparticles, increased surface area, and improved charge carriers separation. This study provides new insights for the fabrication of more efficient graphene-based hybrid photocatalytic systems.
CERAMICS INTERNATIONAL
(2022)
Article
Chemistry, Physical
Ghader Hosseinzadeh, Seyed Mehdi Sajjadi, Loghman Mostafa, Alireza Yousefi, Reza Hadjiaghaie Vafaie, Sahar Zinatloo-Ajabshir
Summary: In this study, a direct Z-scheme heterojunction nanocomposite with abundant oxygen vacancy defects was fabricated and used as a powerful photocatalyst for decomposition of the insecticide nitenpyram. The findings showed that the nanocomposite with 30wt% of SrTiO3 had the best photocatalytic efficiency. The improvement in photocatalytic ability was attributed to the existence of oxygen vacancy defects, facilitating charge carriers separation and effective generation of radicals. The study also detected possible decomposition intermediates of nitenpyram through HPLC-MS analysis.
SURFACES AND INTERFACES
(2023)
Article
Chemistry, Multidisciplinary
Seyed Milad Tabatabaeinejad, Sahar Zinatloo-Ajabshir, Omid Amiri, Masoud Salavati-Niasari
Summary: This study developed a new type of Lu2Cu2O5-Lu2O3 nanocomposite that can efficiently photocatalytically degrade various toxic pollutants. The material was fabricated via an eco-friendly approach and exhibited high catalytic activity.
