Article
Biotechnology & Applied Microbiology
Asma Rhimi, Khira Zlaoui, Bart Van Der Bruggen, Karima Horchani-Naifer, Dorra Jellouli Ennigrou
Summary: Polysulfone ultrafiltration membranes were prepared with additives of poly (vinyl pyrrolidone) and polyethylene glycol. The concentration and nature of the additives had an impact on the performance of the membranes. The membrane with 2 wt% poly (vinyl pyrrolidone) demonstrated optimal retention and permeation. The membrane showed high retention of bovine serum albumin, cobalt, and copper in the ultrafiltration process.
JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY
(2022)
Article
Chemistry, Physical
Fei Fang, Hai-Yang Zhao, Rui Wang, Qi Chen, Qiong-Yan Wang, Qing-Hua Zhang
Summary: In this study, polysulfone (PSF), sulfonated polysulfone (SPSF), and sulfonated polysulfone/dextran (SPSF/GLU) membranes were successfully fabricated for LDL adsorption. The SPSF/GLU membrane exhibited high resistance to protein adsorption and a similar adsorption capacity to PSF. The SPSF membrane showed excellent selective affinity for LDL in single and binary protein solutions, suggesting potential applications in LDL removal.
Article
Engineering, Chemical
Jingjing Zhang, Shouwen Chen, Jiansheng Li, Weiqing Han, Xiuyun Sun, Na Li, Zhaoxia Hu, Lianjun Wang
Summary: The novel highly hydrophilic nanocomposite additive, sulfonated carbon nano onion (SCNO), was synthesized and incorporated into polyethersulfone (PES) to fabricate high-performance nanocomposite ultrafiltration (UF) membranes. The addition of SCNO nanoparticles enhanced the hydrophilicity, permeability, and antifouling properties of the PES-based UF membrane.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Article
Polymer Science
Berlina Maria Mahimai, Poonkuzhali Kulasekaran, Paradesi Deivanayagam
Summary: A new series of polymer nanocomposite membranes were successfully prepared using solution casting technique, showcasing potential applications in fuel cells. The addition of niobium pentoxide significantly improved the membrane's ionic conductivity and thermal oxidative stability.
JOURNAL OF APPLIED POLYMER SCIENCE
(2021)
Article
Chemistry, Physical
Tatiana Plisko, Yana Karslyan, Alexandr Bildyukevich
Summary: This study focused on modifying polyphenylsulfone ultrafiltration membranes by introducing incompatible polymer polysulfone to improve its permeability. The blend solutions were found to significantly affect the membrane structure and performance, resulting in ultrafiltration membranes with high pure water flux and high rejection rate for human serum albumin.
Article
Polymer Science
Masaud Azhar, Juhana Jaafar, Madzlan Aziz, Yunusa Umar, Mohammad A. Jafar Mazumder, Mazen K. Nazal
Summary: The study developed a new PEM for MFC by mild sulfonation of PEKEKK, which showed improved conductivity and water uptake, potentially enhancing the efficiency of MFCs.
JOURNAL OF APPLIED POLYMER SCIENCE
(2021)
Article
Biochemistry & Molecular Biology
Abelline Fionah, Kate McLarney, Aviana Judd, Isabel C. Escobar
Summary: The global water crisis has led to increased research on membrane technology, which is favored for water treatment due to its chemical-free operation and low temperature capabilities. The high demand for membranes that reject contaminants and salts while requiring minimal cleaning remains a challenge, as most synthesized membranes suffer from fouling, inverse flux-solute rejection relationships, and high costs. This study focused on improving the performance of polysulfone membranes by incorporating sulfonate-functionalized poly-ether-ether-ketone (SPEEK). The results showed that incorporating SPEEK into the membranes increased hydrophilicity and allowed for ion rejection through charge repulsion.
Article
Engineering, Chemical
Christine N. Matindi, Mengyang Hu, Sania Kadanyo, Quang Viet Ly, Nozipho N. Gumbi, Derrick S. Dlamini, Jiaye Li, Yunxia Hu, Zhenyu Cui, Jianxin Li
Summary: PES/SPSf/TiO2 mixed matrix membranes were fabricated for oil-in-water emulsion separation using non-solvent induced phase inversion technique. The addition of TiO2 nanoparticles and variation of polymer concentrations resulted in membranes with excellent water permeability, oil rejection, and permeance recovery rate. Molecular dynamic simulations and spectroscopic analyses showed that the TiO2 NPs formed hydrogen bonds with polymer chains, leading to desirable morphological changes in the membranes.
JOURNAL OF MEMBRANE SCIENCE
(2021)
Article
Environmental Sciences
Yi Wang, Daxue Li, Jian Li, Jun Li, Mao Fan, Mengwei Han, Zequn Liu, Zhanguo Li, Fanxin Kong
Summary: This work fabricated a new type of UiO-66 incorporated polysulfone ultrafiltration membranes, which exhibited enhanced antifouling properties and heavy metal ions removal efficiency. The incorporation of UiO-66 fillers improved the hydrophilicity, porosity, and HA removal ratios of the membranes. The modified membranes also showed excellent antifouling abilities and were highly-effective in removing heavy metal ions.
ENVIRONMENTAL RESEARCH
(2022)
Article
Engineering, Chemical
Jiulong Yin, Hai Tang, Zhaozan Xu, Nanwen Li
Summary: Blending TB polymer into SPSf ultrafiltration membranes improves the pore structure, water contact angle, and pure water flux. The acid-base crosslinking structure enhances mechanical strength and reduces protein adsorption, while maintaining similar retention factors for foulants.
JOURNAL OF MEMBRANE SCIENCE
(2021)
Article
Materials Science, Multidisciplinary
Jing Li, Jian Lu, Haoqi Sang, Yu Zhang, Benkun Qi, Jianquan Luo, Yinhua Wan, Yongbing Zhuang
Summary: In this study, three synthesized DES-resistant polyimides (PIs) were used to prepare UF membranes for the direct separation of LS from DES solutions. The resulting UF membranes exhibited smaller pore sizes and higher LS rejections and DES fluxes, with the B-PI membrane showing the best separation performance and excellent operating stability.
ACS APPLIED POLYMER MATERIALS
(2023)
Article
Engineering, Environmental
Xiao-Tong Yuan, Lei Wu, Hong-Zhang Geng, Luda Wang, Wenyi Wang, Xue-Shuang Yuan, Benqiao He, Yi-Xuan Jiang, Yu-jie Ning, Ze-Ru Zhu, Jianxin Li
Summary: Introducing polyaniline nanofibers can enhance the anti-fouling performance and tensile strength of polysulfone membranes, improving overall membrane performance. Experimental results confirm that the blended membranes exhibit significant anti-fouling properties when filtering solutions containing albumin, humic acid, and sodium alginate.
JOURNAL OF WATER PROCESS ENGINEERING
(2021)
Article
Environmental Sciences
Jenny Nambikkattu, Noel Jacob Kaleekkal, Joel Parayil Jacob
Summary: This study successfully addressed the issue of removing glucose from effluents in food, fermentation, and sugar industries, while ensuring compliance with COD standards for water discharge. By incorporating MgFe2O4 and ZnFe2O4 nanoparticles, the thin-film nanocomposite membranes achieved a glucose rejection rate of 96.52%.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Engineering, Chemical
Sania Kadanyo, Nozipho N. Gumbi, Christine N. Matindi, Derrick S. Dlamini, Yunxia Hu, Zhenyu Cui, Hong Wang, Mengyang Hu, Jianxin Li
Summary: In this study, hydrophilic poly (ethylene-co-vinyl alcohol) (EVOH) and hydrophobic polysulfone (PSF) were blended together using polyethylene glycol (PEG) as a hydrophilic additive and compatibilizer, which resulted in ultrafiltration (UF) membranes with high porosity and antifouling properties. The optimal PEG content for blending with PSF/EVOH was found to be 20 wt%. The blended membranes exhibited improved miscibility, pure water permeance, and antifouling properties, making them suitable for wastewater treatment.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Chemistry, Multidisciplinary
Shweta Chaubey, Sanjay Mehra, Anshul Yadav, Arvind Kumar, Vinod K. Shahi
Summary: In this study, antibacterial membranes with curcumin-enriched Cur-NaDBS nanoparticles were synthesized and characterized. The membranes showed improved resistance to fouling and exhibited antibacterial properties.
MATERIALS TODAY CHEMISTRY
(2022)
Article
Chemistry, Analytical
Umesh Fegade, Ganesh Jethave, Sanjay Attarde, Sachin Kolate, Inamuddin, Tariq Altalhi, Suvardhan Kanchi
Summary: Pb(II) doped zinc oxide nanoparticles (Pb-ZnONPs) were synthesized and used as an adsorbent for removing Erichrome Black T (EBT) from wastewater. The adsorption of EBT onto Pb-ZnONPs followed pseudo-second-order kinetics model, indicating chemisorption. Pb-ZnONPs exhibited a higher adsorption potential for EBT compared to other adsorbents. The adsorption process was described by a multi-layer process based on freundlich regression coefficient.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL ANALYTICAL CHEMISTRY
(2023)
Article
Chemistry, Analytical
Umesh Fegade, Inamuddin, Tariq Altalhi, Mohd Imran Ahamed, Suvardhan Kanchi
Summary: FeZnOAC was successfully synthesized as an adsorbent for the removal of Fuchsine dye, showing efficient performance and high adsorption capacity. The adsorption behavior followed a pseudo-second-order model and the Langmuir isothermal model, with adsorption capacity dependent on temperature and system nature. FeZnOAC proves to be a potential adsorbent for Fuchsine dye removal from industrial wastewater and can be regenerated for multiple uses.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL ANALYTICAL CHEMISTRY
(2023)
Article
Chemistry, Analytical
Nilima Patil, R. B. Dhake, Umesh Fegade, Kannan Gokulakrishnan, Chennan Ramalingan, Inamuddin, Tariq Altalhi, Suvardhan Kanchi
Summary: A novel Schiff base, S1, was synthesized and found to exhibit fair selectivity and sensitivity towards Ni2+. It showed no significant interference from co-existing cations and anions. The complexation ratio of S1 and Ni2+ was confirmed as 1:1, and the binding constant (Kb) was calculated. A paper test strip kit using S1 was successfully designed for the recovery of Ni2+ from real water samples in the environmental monitoring assessment laboratory.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL ANALYTICAL CHEMISTRY
(2023)
Article
Chemistry, Inorganic & Nuclear
Ganesh Jethave, Inamuddin, Umesh Fegade, Tariq Altalhi, Suvardhan Kanchi, Rajesh Dhake
Summary: An efficient activated carbon based on ZnMnO nanocomposite was synthesized and characterized. This material showed good adsorption performance for toxic chromium. The effects of parameter variations on adsorption efficiency were studied, and the pseudo-second-order reaction was found to be the most suitable kinetic model. The Langmuir model was found to be more appropriate for describing the adsorption process compared to other models. The negative values of thermodynamic parameters indicated that the adsorption process was spontaneous and stable. Among the statistical models used, the double-layer model was the best fit for the adsorption process.
INORGANIC AND NANO-METAL CHEMISTRY
(2023)
Article
Environmental Sciences
Sadia Bano, Saadia Rashid Tariq, Tanzila Anjum, Mohsin Najam, Muhammad Usman, Muhammad Yasin, H. Z. Shafi, Asim Laeeq Khan
Summary: This study developed mixed matrix membranes (MMMs) with hybrid organic-inorganic characteristics by incorporating lanthanum-Metal Organic Frameworks (La-MOFs) into Matrimid. The MMMs exhibited enhanced CO2 permeation and selectivity with increasing loading of the nano-filler. The results suggest that these membranes have potential for important applications in gas separation industries.
Review
Biochemistry & Molecular Biology
Ubaid Ur Rahman, Muhammad Humayun, Usman Ghani, Muhammad Usman, Habib Ullah, Adil Khan, Nashwa M. El-Metwaly, Abbas Khan
Summary: Due to their unique layered microstructure, presence of various functional groups, earth abundance, and attractive electrical, optical, and thermal properties, MXenes are considered promising materials for addressing energy and environmental challenges. This review provides an overview of the fabrication, properties, and potential applications of MXenes, as well as the enhancement of their properties and applications through modification and functionalization approaches.
Article
Environmental Sciences
Zain Iqbal, Zufishan Shamair, Muhammad Usman, Mazhar Amjad Gilani, Muhammad Yasin, Sidra Saqib, Asim Laeeq Khan
Summary: A facile approach was used to synthesize ionic liquid in a porous metal organic framework, leading to enhanced CO2 separation performance.
Article
Physics, Multidisciplinary
Sami Ullah, Sajjad Ali, Aziz Ahmad, Nabi Ullah, Jabir Hakami, Muhammad Usman, Sikandar Khan, Firoz Khan
Summary: By employing the first-principles of density functional theory (DFT), this study evaluated the properties of four stoichiometric Weyl semimetal compounds, including structural parameters, elastic, vibrational, electronic properties, and enthalpies of formation. The effects of point defects (vacancies and anti-sites) on the electronic structure of these compounds were highlighted through the calculation of point defect formation energies and electronic band structures using an unfolding technique. The relationship between defect concentrations and temperature was derived for these compounds.
CHINESE JOURNAL OF PHYSICS
(2023)
Article
Chemistry, Physical
Aasif Helal, Mohammed Ahmed Sanhoob, Bosirul Hoque, Muhammad Usman, Md. Hasan Zahir
Summary: In this paper, a bimetallic Metal-Organic Framework (MOF) CoNiBTC was used to fabricate bimetallic nanoalloys CoNi@C evenly dispersed in carbon shells. The nanomaterials were characterized by various techniques and used as catalysts for the synthesis of benzimidazole and methanation of CO2 with high yields and selectivity.
Article
Chemistry, Multidisciplinary
Munzir H. Suliman, Zain H. Yamani, Muhammad Usman
Summary: In this study, copper-melamine complex was used to synthesize copper-based electrocatalysts, specifically copper nanoparticles decorated on nitrogen-doped carbon nanosheets. The as-prepared electrocatalysts showed good dispersion, high current density, electrochemical surface area, electrical conductivity, stability, and faradic efficiency in the electrochemical CO2 reduction reaction.
Article
Chemistry, Physical
Muhammad Usman, Munzir H. Suliman
Summary: By using a simple method, several silver-doped zeolitic imidazole framework (ZIF-8) composites were prepared. CO2 electroreduction on Ag-doped ZIF-8 catalysts shows high faradaic efficiency (almost 100%) in producing CO and H2, and the H2/CO ratio can be easily controlled from 3:1 to 1:3 by adjusting the applied voltage.
Review
Biochemistry & Molecular Biology
Aasif Helal, Mohd Yusuf Khan, Abuzar Khan, Muhammad Usman, Md. Hasan Zahir
Summary: In recent decades, reticular chemistry has significantly developed as a field of porous crystalline molecular materials. This study presents a novel platform for anion recognition based on reticular chemistry, which exhibits high selectivity, sensitivity, and stability.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Review
Green & Sustainable Science & Technology
Adeel Bashir, Sikandar Khan, Naveed Iqbal, Salem Bashmal, Sami Ullah, Muhammad Usman
Summary: Unmanned underwater vehicles (UUVs) are increasingly popular due to their advantages in various applications. However, they also face challenges in communication, navigation, power requirements, maintenance, and payload limitations. Designing a controller that can ensure optimal performance under these conditions is a challenging task. This paper presents a comprehensive review and comparison of different control system design algorithms for UUVs, analyzing the advantages and disadvantages of each algorithm to facilitate the selection of a suitable algorithm for UUV control system design.
Article
Chemistry, Multidisciplinary
Mathkar A. Alharthi, Mohammad Luqman, Nimra Shakeel, Mohd Imran Ahamed, Inamuddin
Summary: In this study, Au@rGO/PIn nanocomposite was successfully synthesized using an eco-friendly method and found to have good electrochemical efficiency in glucose oxidation reactions. Through the analysis of the physical characteristics and electrochemical behavior of the modified bioanodes, it was discovered that a maximum current output was achieved at a glucose concentration of 50 mM. These materials are cost-effective, easy to use, and environmentally friendly, making them suitable for applications such as enzymatic biofuel cells.
JOURNAL OF NANOSTRUCTURE IN CHEMISTRY
(2023)
Article
Engineering, Environmental
Aasif Helal, Fatimah Alahmari, Muhammad Usman, Zain H. Yamani
Summary: The conversion of CO2 into cyclic carbonates is an effective approach for green solvents. This study successfully synthesized a composite material Ch@UiO-67 and demonstrated its superior performance in CO2 uptake and catalytic reactions compared to pristine UiO-67. The catalyst was also capable of reacting with different epoxides and maintained its catalytic activity through multiple cycles.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)