Article
Engineering, Chemical
Md Shahjahan Kabir Chowdury, Young Jin Cho, Sung Bum Park, Yong-il Park
Summary: This study focuses on improving the proton conductivity of graphene oxide (GO) by modifying its surface with a silane compound. The modified GO showed enhanced proton conductivity and improved properties such as water uptake and dimensional stability. The findings suggest that the modified GO could be a promising material for proton exchange, gas permeation, and fuel cell applications.
JOURNAL OF MEMBRANE SCIENCE
(2022)
Article
Electrochemistry
Md Shahjahan Kabir Chowdury, Young Jin Cho, Sung Bum Park, Yong-il Park
Summary: The modification of GOM with MPTS has significantly improved its proton conductivity, although it still falls short of Nafion (R). Through comparative measurements, M-GOM exhibits better performance and shows potential to replace Nafion (R) in electrochemical devices.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2021)
Article
Chemistry, Multidisciplinary
Youli Feng, Haojie Tian, Ning Mao
Summary: The adsorption characteristics of silanized zeolite for Ni2+ and Cu2+ ions in water solutions were analyzed, with an optimum adsorption ratio of 1 g/L. Equilibrium states for Ni2+ and Cu2+ were reached at 220 and 108 minutes, respectively, and the modified zeolite showed excellent resistance to acids in a pH range of 2-6, with increasing adsorption capacity as pH increased.
JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY
(2021)
Article
Engineering, Environmental
Titus Chinedu Egbosiuba, Michael Chika Egwunyenga, Jimoh Oladejo Tijani, Saheed Mustapha, Ambali Saka Abdulkareem, Abdulsalami Sanni Kovo, Vida Krikstolaityte, Andrei Veksha, Michal Wagner, Grzegorz Lisak
Summary: Nickel nanoparticles supported on activated multi-walled carbon nanotubes were used as an efficient adsorbent for the removal of Pb(II), As(V), and Cd(II) from industrial wastewater. The nanocomposite showed enhanced adsorption capacity and good recycling performance, making it a promising candidate for wastewater treatment applications.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Chemistry, Analytical
Eshraq Aljamal, Mohmmed Rasheed, Fawwaz Khalili
Summary: Carbonate and silicate natural sediments from the gulf of Aqaba-Jordan were studied for the adsorption of nickel, lead, and cadmium ions. The adsorption process was found to be spontaneous and endothermic, with an increase in adsorption capacity with increasing pH.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL ANALYTICAL CHEMISTRY
(2022)
Article
Materials Science, Multidisciplinary
Sushil Kumar, Ganga Ram Chaudhary, Savita Chaudhary, Ahmad Umar
Summary: This study successfully synthesized highly fluorescent and surface-functionalized gadolinium oxide nanoparticles, and enhanced the stability and solubility of the nanoprobe in aqueous media through surface modification. The nanoprobe exhibited reliable detection of cysteine in body fluids using a simple fluorescence-based methodology, with the characteristics of being economical, highly sensitive, and selective.
Article
Biochemistry & Molecular Biology
Basel Al-Saida, Arwa Sandouqa, Reyad A. Shawabkeh, Ibnelwaleed Hussein
Summary: This study focuses on utilizing nanosilica for the adsorption of Cd2+ and Cu2+ from water. The experimental results show that Cd2+ has a higher uptake than Cu2+ and the affinity for Cd2+ decreases with increasing Cu2+ equilibrium concentration. Theoretical interpretations and molecular dynamics simulations support the experimental data. This study provides important insights into the removal of heavy metals from water using nanosilica.
Article
Chemistry, Multidisciplinary
Veeranmaril Sudheeshkumar, Charles Soong, Stas Dogel, Robert W. J. Scott
Summary: High-surface-area gold catalysts are promising for selective oxidation and reduction reactions, but often deactivate at high temperatures due to sintering. This study discusses a method to synthesize Au-25 clusters stabilized with MPTS ligands and shows that fabricating overlayers of silica around the clusters can alleviate their mobility, leading to improved sinter-resistance up to 650 degrees C.
Article
Chemistry, Physical
Sushil Kumar, Ganga Ram Chaudhary, Savita Chaudhary, Ahmad Umar
Summary: This study reports a facile fabrication method for functionalized gadolinium oxide nanoparticles and their application in sensing L-Cysteine. The fabricated sensor exhibited good linear response and high sensitivity, and maintained stability and reproducibility in the presence of various interfering substances. The application of the sensor in human urine samples increased its potential prospects in the biomedical field.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Review
Chemistry, Applied
Ayodele Akinterinwa, Usaku Reuben, Jamila Umar Atiku, Mustapha Adamu
Summary: Lead and cadmium, typical heavy metals, pose environmental and health risks when discharged indiscriminately. Starch derivatives adsorbents (SDAs) offer an economical and sustainable water treatment technique for removing heavy metal ions from water.
CARBOHYDRATE POLYMERS
(2022)
Review
Environmental Sciences
Kaviyarasi Renu, Rituraj Chakraborty, Haritha Myakala, Rajeshwari Koti, Ademola C. Famurewa, Harishkumar Madhyastha, Balachandar Vellingiri, Alex George, Abilash Valsala Gopalakrishnan
Summary: Exposure to heavy metals beyond permissible limits poses a serious threat to human health, causing hepatotoxicity, cellular damage, and inflammatory responses.
Article
Materials Science, Ceramics
Natthida Lamaiphan, Chinawooth Sakaew, Phitchan Sricharoen, Prawit Nuengmatcha, Saksit Chanthai, Nunticha Limchoowong
Summary: In this study, thiol-functionalized graphene oxide-iron oxide (Fe3O4-GO-SH) nanocomposites were prepared and characterized for the simultaneous preconcentration and determination of heavy metal ions, such as Ag(I), Pb(II), and Cd(II), from water samples. The method showed high sensitivity and a wide linear range, making it suitable for the analysis of heavy metal ions in various types of water samples.
JOURNAL OF THE KOREAN CERAMIC SOCIETY
(2021)
Article
Engineering, Environmental
Chunli Han, Jian Deng, Guangsheng Luo
Summary: The hydrolysis and condensation kinetics of MPTMS were studied using in-situ Raman spectroscopy. The hydrolysis reaction kinetics of MPTMS were investigated with CH3OH as the solvent and NH4OH as the catalyst. The reaction orders for MPTMS, H2O, and NH4OH are 1.0, 1.0, and 1.0, respectively. The activation energy and pre-exponential factor of the hydrolysis reaction were determined. Then, the condensation reaction kinetics of the hydrolysates HS(CH2)(3)Si(OH)(3) were studied using an acid-catalyzed hydrolysis and base-catalyzed condensation strategy. The reaction orders for HS(CH2)(3)Si(OH)(3) and NH4OH were determined, along with the activation energy and pre-exponential factor of the condensation reaction. The kinetic parameters obtained in this study provide quantitative guidance for the design and control of MPTMS reactions.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Green & Sustainable Science & Technology
Shamim Umer, Zaheer Abbas, Irfan Aziz, Maria Hanif, Zainul Abideen, Simeen Mansoor, Neelofar Hamid, Mohammad Ajmal Ali, Fahad M. M. Al-Hemaid
Summary: Heavy metals, such as cadmium and nickel, were found to be present at high levels in urban areas of Faisalabad. Different tree species showed variation in their uptake of these metals from soil. Certain species, like Conocarpus erectus, Dalbergia sissoo, and Bismarckia nobilis, had higher accumulation potential. The study suggests that ornamental tree species can play a role in reducing heavy metal pollution and creating a healthier urban environment.
Article
Engineering, Chemical
Faizah Altaf, Shakeel Ahmed, Muhammad Usman, Tahira Batool, Jaweria Shamshad, Patrizia Bocchetta, Rida Batool
Summary: In this study, composite membranes of PD-CNTs and polysulfone were prepared and their potential for removing heavy metals chromium, lead, and cadmium from water was investigated. The results demonstrated that PDCNS membranes have great potential for the removal of heavy metals from water.
Article
Construction & Building Technology
Mahdi Zakerzadeh, Sayyed Mahdi Abtahi, Alireza Allafchian, Mohamad Reza Chamani
Summary: The study aims to investigate the impact of superhydrophobic coating on reducing hydroplaning risk and decreasing water film thickness on asphalt pavements. Results show that the mean hydroplaning speed of vehicles on coated asphalt samples was roughly 1.33 times higher than on uncoated samples, indicating the potential of superhydrophobic coatings in mitigating hydroplaning risk.
INTERNATIONAL JOURNAL OF PAVEMENT ENGINEERING
(2021)
Article
Materials Science, Textiles
Saeed Reza Zahabi, Mohammad Sheikhzadeh, Saleh Akbarzadeh, RamazanAli Abuzade, Frank Ko
Summary: In this study, a hybrid PTFE/glass fiber braided structure was used as composite reinforcement, and composites were prepared through vacuum assisted resin transfer molding process. The tribological experiments showed self-lubricating and low friction coefficient due to PTFE transfer film formation, with friction coefficients of 0.112, 0.105, and 0.096 obtained under loading forces of 20, 30, and 40 N, respectively.
JOURNAL OF INDUSTRIAL TEXTILES
(2022)
Article
Biochemistry & Molecular Biology
Hadi Rahnama, Saied Nouri Khorasani, Alireza Aminoroaya, Mohammad Reza Molavian, Alireza Allafchian, Shahla Khalili
Summary: Chitosan-based hydrogels are explored as a versatile system for localized and controlled drug delivery, with the study demonstrating the successful preparation of CS/DA/IA hydrogels for sustained release of Indomethacin. The interaction between chitosan and inulin aldehyde as a crosslinking agent is verified through various analyses, while the hydrogels also exhibit good cytocompatibility against fibroblast cell line according to MTT assay.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2021)
Article
Materials Science, Composites
Saeed Reza Zahabi, Mohammad Sheikhzadeh, Fatemeh Shahramforouz, Frank Ko
Summary: The study investigated the mechanical properties of self-lubricating composites, showing that PTFE/epoxy matrix has poor adhesion. Composites with higher PTFE volume fraction displayed good energy absorption but lower shear strength. The higher modulus of carbon composites was a concern.
JOURNAL OF COMPOSITE MATERIALS
(2021)
Article
Nanoscience & Nanotechnology
Zohreh Zakeri, Alireza Allafchian, Mohammad Reza Vahabi, Seyed Amir Hossein Jalali
Summary: In this study, essential oils extracted from the leaves, bulbs, and petals of the crown imperial plant were used as reducing agents to synthesize silver nanoparticles. The sample obtained from petals showed the strongest antibacterial effect among all tested bacteria, with significant inhibition capability. The cell viability assay using Vero cell line demonstrated a nearly constant viability rate above 125 μg/mL of silver nanoparticles.
MICRO & NANO LETTERS
(2021)
Article
Chemistry, Physical
Mehri Karimi Jabali, Ali Reza Allafchian, Seyed Amir Hossein Jalali, Hamideh Shakeripour, Rezvan Mohammadinezhad, Fahime Rahmani
Summary: The study introduces the use of ascorbic acid-modified chitosan as a pDNA nanocarrier, demonstrating promising pDNA release in intestinal fluids and potential biocompatibility with cell lines Vero and EPC. Chitosan effectively shields pDNA in gastric environments and allows for release in alkaline intestinal tissues, presenting a novel approach for gene delivery through oral administration.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2022)
Article
Nanoscience & Nanotechnology
Raana Hatami, Alireza Allafchian, Fathallah Karimzadeh, Mohammad Hosein Enayati
Summary: Water pollution is a major cause of fatality in less developed parts of the world, with Gram-positive and Gram-negative bacteria being significant concerns. The Fe3O4/Ag-TiO2 nanocomposite prepared in this study shows potential as a magnetic antibacterial agent for treating pathogen-polluted aqueous media. The nanocomposite demonstrates multifunctionality with photocatalytic effects of TiO2 components, Ag nanoparticles, and magnetic separation capabilities of Fe3O4 particles.
MICRO & NANO LETTERS
(2022)
Article
Nanoscience & Nanotechnology
Bahar Nikforouz, Alireza Allafchian, Seyed Amir Hossein Jalali, Hamideh Shakeripour, Rezvan Mohammadinezhad
Summary: This study demonstrates that iron oxide nanoparticles and quince seed mucilage can be used as efficient carriers for plasmid DNA delivery. The synthesized nanoparticles exhibit good stability and release performance in simulated gastrointestinal environments.
Article
Nanoscience & Nanotechnology
Alireza Allafchian, Shiva Saeedi, Seyed Amir Hossein Jalali
Summary: The study investigates the synthesis of Balangu seed mucilage (BSM) combined with polyvinyl alcohol (PVA) to produce 3D electrospun cell culture scaffolds. The addition of PVA facilitated the formation of BSM/PVA nanofibers. Different BSM/PVA ratios were explored to achieve the desired structure for cell proliferation. Physiochemical assays and thermal analysis confirmed the positive effect of PVA incorporation on the samples. The biocompatibility of the scaffolds was verified through a cell culture experiment.
Article
Nanoscience & Nanotechnology
Salim Albukhaty, Hassan Al-Karagoly, Ali Reza Allafchian, Seyed Amir Hossein Jalali, Thair Al-Kelabi, Mustafa Muhannad
Summary: In this study, electrospun nanofibrous scaffolds containing poorly water-soluble beta-Sitosterol (beta-S) were successfully developed. By optimizing the electrospinning parameters, uniform nanofibers suitable for cell culture were obtained. The experimental results showed that the nanofiber scaffolds exhibited good biocompatibility and promoted cell growth and penetration. Therefore, electrospinning is a promising technique for the biomedical applications of poorly water-soluble drugs.
Article
Engineering, Mechanical
Saeed Reza Zahabi, Mohammad Sheikhzadeh, Saleh Akbarzadeh, Addie Bahi, Frank Ko
Summary: A hierarchical braided polymer composite was designed with PTFE fibers, reinforcement fibers, and epoxy resin as a self-lubricant composite and bearing. The study revealed that carbon fibers led to greater wear weight loss and friction coefficient compared to glass and Kevlar fibers. Additionally, the wear stability of the composites decreased significantly with increased load, and the tribological features became inappropriate with the deployment of 3D braid structure.
PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART J-JOURNAL OF ENGINEERING TRIBOLOGY
(2022)
Article
Chemistry, Analytical
Razieh Ghasemi, Seyede Zohreh Mirahmadi-zare, Alireza Allafchian, Mehrdad Behmanesh
Summary: This study utilized an electrochemical sensor modified with fluorescent-immune nanofibers for the detection and determination of Streptococcus agalactiae, providing qualitative and quantitative recognition of bacteria with high specificity and sensitivity, thus enabling real-time detection in clinical samples.
SENSORS AND ACTUATORS B-CHEMICAL
(2022)
Article
Nanoscience & Nanotechnology
Alireza Allafchian, Mohammad Fathi, Seyed Amir Hossein Jalali
Summary: Hybrid nanofibrous 3D scaffolds containing Aloe vera, polyvinyl alcohol, and tetracycline hydrochloride are fabricated by electrospinning for cell culture applications. The polysaccharides in Aloe vera gel enhance the biocompatibility of the scaffolds. The scaffolds show favorable fiber diameter, tensile strength, and inhibitory effect against bacteria, making them promising for cell growth.
Article
Materials Science, Composites
Saeed Reza Zahabi, Mohammad Sheikhzadeh, Saleh Akbarzadeh, Addie Bahi, Frank Ko
Summary: This study investigated the tribological and thermal properties of a three-dimensional braid composite under different operating conditions. The results showed that the friction coefficient varied with different composites and test conditions.
POLYMER COMPOSITES
(2022)
Article
Environmental Sciences
Ali Seraj, Alireza Allafchian, Fathallah Karimzadeh, Arian Valikhani, Seyed Amir Hossein Jalali
Summary: In this study, an enhanced antibacterial agent was developed by inlaying silver nanoparticles (AgNPs) on a kappa-carrageenan (KC) base and coating them on Fe3O4 magnetic cores (Fe3O4@KC@Ag). The resulting Fe3O4@KC@Ag nanocomposites showed improved antibacterial activity due to the decreased agglomeration of AgNPs. These findings suggest that Fe3O4@KC@Ag nanocomposites could be promising agents for combating bacterial infections in aqueous environments.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)