Article
Chemistry, Physical
Tushar Roy, Sunil Kumar Wanchoo, Kaushik Pal
Summary: The introduction of SiO2@CNT and ZrO2@CNT as nanofillers dramatically enhances the proton conductivity and thermal stability of the proton exchange membrane at high temperatures. Proton migration is mainly achieved through vehicle mechanism at low temperatures and Grotthuss mechanism at high temperatures, while the combined proton transfer effect significantly improves conductivity in the composite membrane.
Article
Materials Science, Paper & Wood
Thomas Bayer, Benjamin Vaughan Cunning, Bretislav Smid, Roman Selyanchyn, Shigenori Fujikawa, Kazunari Sasaki, Stephen Matthew Lyth
Summary: Nanocellulose, after sulfonation, shows enhanced conductivity and is promising for fuel cell applications. Spray-coated cellulose membranes exhibit high current density and power density in fuel cells.
Article
Chemistry, Physical
Nan Zhou, Jin Jia, Shuyuan Zhao, Dongxing Zhang, Mingxiang Feng
Summary: The surface of carbon fibers is modified by a sizing agent composed of sulfonated polyether ether ketone (SPEEK) and carboxylated carbon nanotubes (MWCNTS), which improves the interfacial binding between carbon fibers and polyetheretherketone (PEEK) matrix. The flexural strength and interlaminar shear strength of the modified composites are significantly enhanced by 74.2% and 84.2% compared to CF/PEEK composites without sizing agent. Coating with SPEEK-MWCNTS is confirmed to be an essential approach to construct an excellent interface between the reinforcement phase and thermoplastic matrix.
SURFACES AND INTERFACES
(2023)
Article
Chemistry, Physical
F. T. Chikumba, M. Tamer, L. Akyalcin, S. Kaytakoglu
Summary: This study aimed to develop composite membranes based on sPEEK polymer matrix with TiSiO4 for DMFC applications. The sPEEK polymer with a 53% degree of sulfonation (DS) was used to avoid dissolution and swelling issues. TiSiO4, obtained by calcination of TiO2 and SiO2 nano-powders, was incorporated into the sPEEK matrix through solution-casting method. The composite membranes were characterized for their thermal and physicochemical properties. The composite sPEEK membrane with 2.5 wt% TiSiO4 showed the highest DMFC performance compared to sPEEK and NafionTM 117 membranes. It can be concluded that these composite membranes with TiSiO4 could be a promising and cost-effective alternative for DMFC applications.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Chemistry, Multidisciplinary
Guilong Yan, Zihao Yang, Jiayi Li, Han Li, Jiabing Wei, Letian Shi, Zhenyu Li, Jingyu Chen, Li Wang, Yuanpeng Wu
Summary: Researchers have developed a 3D waterproof MF-PVA nanofibrous membrane with excellent air filtration performance and low air resistance, exhibiting ultra-stable performance in various practical environments.
Article
Engineering, Chemical
Wei Li, Bingyang Bai, Jianfeng Song, Tao Huang, Hailong He, Yue-Biao Zhang, Tao He
Summary: Membrane extraction (ME) is a potential technology for efficiently separating lithium from salt-lake brine with high Mg/Li ratio. A new finding of strong interaction between extractant (TBP) and PEEK substrate was reported, leading to reduction in Li extraction flux. Coating a sulfonated PEEK (SPEEK) layer effectively improved the lithium extraction flux by 154%. This new finding advances the practical applications of membrane extraction.
Article
Engineering, Mechanical
Shihua Yuan, Chenhui Zhang
Summary: Polyether ether ketone (PEEK) is a versatile material for friction pairs, and it can be modified through sulfonation to achieve ultralow friction, good wear resistance, and high loading capacity when used as a water-lubricated friction pair.
Article
Polymer Science
Cigdem Akduman
Summary: This study fabricated PTFE membranes using different ratios of PVA and PEO polymers as carriers through electrospinning, followed by sintering at 380 degrees C. The SEM images revealed that the PEO/PTFE membranes better preserved their fibrous structure. Though the mean pore sizes of PEO/PTFE and PVA/PTFE membranes were higher than commercial membranes, bacterial removal tests showed promising results for PEO/PTFE membranes, with a reduction of 1.3 3log CFU/mL.
JOURNAL OF APPLIED POLYMER SCIENCE
(2023)
Article
Chemistry, Physical
Merve G. Seden, Emre Basturk, Tulay Y. Inan, Nilhan K. Apohan, Atilla Gungor
Summary: In this study, molecular weight-controlled and fluorine-containing polyarylethers (MWCPAEs) were synthesized and blend membranes with excellent properties were prepared through sulfonation and blending. The chemical, mechanical, thermal, and hydrolytic properties of the blend membranes are comparable to or better than Nafion.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Engineering, Chemical
Bianca Swanckaert, Eva Loccufier, Jozefien Geltmeyer, Korneel Rabaey, Klaartje De Buysser, Luiza Bonin, Karen De Clerck
Summary: Electrochemical treatments in wastewater management have high potential, but the performance of ion-exchange membranes (IEMs) often limits their effectiveness. Sulfonated silica-based nanofiber cation-exchange membranes (CEMs) offer a solution to these limitations, thanks to their chemical resistance and self-cleaning properties. These nanofiber CEMs can be produced without the need for additional material and have excellent performance in lab-scale electrochemical tests, exhibiting resistance to strong acids and self-cleaning properties.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Polymer Science
Maryam Taufiq Musa, Norazuwana Shaari, Nor Fatina Raduwan, Siti Kartom Kamarudin, Wai Yin Wong
Summary: In this study, a sodium alginate/poly (vinyl alcohol) (SA/PVA) blended membrane modified by montmorillonite (MMT) was produced, which showed great potential as an alternative membrane with a much cheaper cost. The optimal performance was achieved when the content of MMT in the membrane was 10%, which resulted in the highest proton conductivity and the lowest methanol uptake.
Article
Polymer Science
David Minguez-Garcia, Noel Breve, Lucia Capablanca, Mariles Bonet-Aracil, Pablo Diaz-Garcia, Jaime Gisbert-Paya
Summary: Electrospinning allows for the production of solid fibers and core-shell fibers, but meticulous control of parameters is necessary to obtain core-shell fibers. This study aimed to prevent coalescence and create a network of nanofibers encapsulating oil microcapsules using electrospinning. The results showed that oil was present in the electrospun web, with the microcapsules retaining the oil and maintaining a liquid state. Additionally, the size of the emulsion influenced the size of the final microcapsules, and the nanofiber diameter decreased compared to fibers without oil.
Article
Polymer Science
Marwa H. Gouda, Noha A. Elessawy, Sami A. Al-Hussain, Arafat Toghan
Summary: The study demonstrates that incorporating super-acidic sulfated zirconia into a binary polymer blend can enhance the physicochemical properties of composite membranes, leading to increased power density and decreased permeability and swelling ratio. Membranes with 7.5% SO4ZrO2 exhibit power density close to that of commercial Nafion117, highlighting the promising future applications of cost-effective and eco-friendly DBFC membranes.
Article
Engineering, Chemical
Xiulan Li, Xiaohong He, Yao Ling, Zhongxiang Bai, Chenchen Liu, Xiaobo Liu, Kun Jia
Summary: In this study, a super-engineering polyarylene ether nanofibrous membrane with covalently immobilized silver nanoparticles was synthesized. The composite membrane exhibited excellent hydrophilic/underwater super-hydrophobic surface wettability and strong antibacterial effects. After 20 cycles of separation, the membrane maintained high separation flux and efficiency, indicating its mechanical stability and anti-fouling features. The research holds significant importance and is rated as 9 out of 10.
JOURNAL OF MEMBRANE SCIENCE
(2023)
Article
Materials Science, Biomaterials
Yingxiao Sun, Xingdan Liu, Ji Tan, Dan Lv, Wengang Song, Rui Su, Ling Li, Xuanyong Liu, Liping Ouyang, Yun Liao
Summary: The study investigated the loading of strontium ranelate onto sulfonated three-dimensional PEEK porous structures, showing enhanced cell adhesion and improved bioactivity of MC3T3-E1 cells.
REGENERATIVE BIOMATERIALS
(2021)
Article
Polymer Science
Jorge Escorihuela, Abel Garcia-Bernabe, Vicente Compan
Article
Chemistry, Multidisciplinary
Suzan Saber, Bernabe Mari, Andreu Andrio, Jorge Escorihuela, Nagwa Khattab, Ali Eid, Amany El Nahrawy, Mohamed Abo Aly, Vicente Compan
Summary: A new method for synthesizing nanopowders and thin films of CuInGaSe2 (CIGS) chalcopyrite material doped with Cr was presented, showing promising results for thin film solar cell applications. The electrical properties of the doped materials were found to be highly dependent on the Cr content, highlighting the potential for these materials as dopants in solar cell fabrication.
Editorial Material
Biochemistry & Molecular Biology
Vicente Compan
Article
Engineering, Chemical
Arturo Barjola, Jose Luis Reyes-Rodriguez, Omar Solorza-Feria, Enrique Gimenez, Vicente Compan
Summary: Nanocomposite membranes containing ZIF-67 were successfully prepared and evaluated for their performance in proton conductivity and thermal stability. The addition of ZIF improved the proton conductivity of the membranes, with SPEEK-Z1 membrane showing the best results in a H-2/O-2 single cell test. The nanocomposite membranes also exhibited enhanced thermal stability, making them promising for use in PEMFC applications at intermediate temperatures above 100 degrees C.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2021)
Article
Polymer Science
Jorge Luis Apatiga, Roxana Mitzaye del Castillo, Luis Felipe del Castillo, Alipio G. Calles, Raul Espejel-Morales, Jose F. Favela, Vicente Compan
Summary: The study reveals that embedding graphene nanoparticles in polymers can enhance electrical conductivity and change the insulating properties of the polymers. The type of interaction and its impact can vary depending on the specific polymer and graphene nanoparticle combination used.
Article
Polymer Science
Ricardo Diaz-Calleja, Damian Ginestar, Vicente Compan Moreno, Pedro Llovera-Segovia, Clara Burgos-Simon, Juan Carlos Cortes, Alfredo Quijano, Joaquin Diaz-Boils
Summary: Electroelastic materials like 3M VHB 4910 are being studied as actuators or generators due to their ability to deform under an electric field. Viscoelastic models have been proposed to explain the dissipative behavior of these materials, and the introduction of fractional derivatives has been shown to provide a better description of material behavior. Additionally, the adoption of the Mooney-Rivlin equation and the modification of the free energy density model can predict bifurcation phenomena in equibiaxial dead loads.
Review
Polymer Science
Miriam M. Tellez-Cruz, Jorge Escorihuela, Omar Solorza-Feria, Vicente Compan
Summary: The study of electrochemical catalyst conversion of renewable electricity and carbon oxides into chemical fuels is crucial for mitigating the global energy crisis. Research efforts are currently focused on developing high-performance membranes and nanomaterials with high catalytic activity to improve fuel cell performance and reduce the use of expensive platinum group metals.
Article
Electrochemistry
Vicente Compan, Ricardo Diaz-Calleja, Joaquin Diaz-Boils, Jorge Escorihuela
Summary: In this study, we propose an alternative approach to calculate the mobility, diffusivity, and charge density in polyelectrolytes using a distribution of the Debye length (L-D), which provides a more concise way to consider these parameters.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2022)
Article
Polymer Science
Carlos Sanchez, Francisco J. Espinos, Arturo Barjola, Jorge Escorihuela, Vicente Compan
Summary: In this study, Nafion membranes containing two different nanocomposite MF-4SC membranes modified with polyaniline were prepared and evaluated as a polymer electrolyte membrane for water electrolysis. The operating conditions were optimized, and the effects of various parameters on cell performance were studied. The results showed that the composite PANI membranes exhibited improved performance over pristine perfluorinated sulfocationic membranes, and methanol-water electrolysis required less electrical power than water electrolysis.
Article
Chemistry, Multidisciplinary
Vicente Compan, Andreu Andrio, Jorge Escorihuela, Josua Velasco, Alejandro Porras-Vazquez, Jose Gamez-Perez
Summary: In this study, poly(vinyl alcohol)/graphene oxide/clay aerogels filled with montmorillonite or kaolinite were prepared. The addition of graphene oxide enhanced the mechanical properties and thermal stability of the composite materials. However, the conductivity drastically decreased after compressing the samples.
Article
Materials Science, Multidisciplinary
Fernando Gisbert Roca, Cristina Martinez-Ramos, Sergiy Ivashchenko, Abel Garcia-Bernabe, Vicente Compan, Manuel Monleon Pradas
Summary: Electroconductive materials based on poly(lactic acid) electrospinning membranes grafted with carboxylic group functionalized carbon nanotubes (CNTs) were obtained. The PLA membranes were oxidized with sulfuric acid and subsequently grafted with CNTs, resulting in improved mechanical and conductive properties. The uniform distribution of CNTs on the PLA nanofiber surface and the elimination of the insulating barrier of PLA contributed to the enhanced functionality of the PLA-CNTs membranes for medical and industrial applications.
ACS APPLIED POLYMER MATERIALS
(2023)
Article
Chemistry, Physical
S. Hernandez, Belen Altava, J. A. Portillo-Rodriguez, Ivan Santamaria-Holek, C. Garcia-Alcantara, Santiago Luis, Vicente Compan
Summary: The analysis of the ionic transport properties of BMIM [NTf2] in supported ionic-liquid-like phase (SILLP)-based membranes has been conducted based on experimental impedance spectroscopy measurements. The addition of an ionic liquid to the polymeric matrix containing imidazolium fragments significantly increases the conductivity. The study provides insights into how the local entropy restrictions, due to the porosity of the polymeric matrix, control the conductive process.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2022)
Article
Chemistry, Physical
Jewel Ann Maria Xavier, Isabel Fuentes, Miquel Nuez-Martinez, Zsolt Kelemen, Andreu Andrio, Clara Vinas, Vicente Compan, Francesc Teixidor
Summary: By intimately blending PEDOT and metallacarboranes, a dual redox reversible material is formed, which lowers the over-potential for the oxygen evolution reaction and shows promise for practical applications.
JOURNAL OF MATERIALS CHEMISTRY A
(2022)
Article
Chemistry, Multidisciplinary
Arturo Barjola, Jorge Escorihuela, Abel Garcia-Bernabe, Oscar Sahuquillo, Enrique Gimenez, Vicente Compan
Summary: PBI composite membranes with varying amounts of ionic liquid were prepared, leading to increased conductivity and the formation of porous channels. The membranes were characterized for thermal and mechanical stability, as well as ion transport properties through electrochemical impedance spectroscopy analysis.
Correction
Chemistry, Physical
Andreu Andrio, S. I. Hernandez, C. Garcia-Alcantara, L. F. del Castillo, Vicente Compan, Ivan Santamaria-Holek
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2021)
Article
Engineering, Chemical
Jiawei Hou, Shixuan Guo, Nigel Graham, Wenzheng Yu, Kening Sun, Ting Liu
Summary: A novel 2D composite membrane based on r-HGO and MXene materials was developed, demonstrating exceptional performance for water treatment in terms of permeability, pollutant rejection, and physical stability. The optimization of preparation conditions and material proportions can result in high water flux and efficient removal of pollutants.
JOURNAL OF MEMBRANE SCIENCE
(2024)
Retraction
Engineering, Chemical
Chang Liu, Jinghong Liu, Liang Zhu, Shanfu Tang, Huixin Xiong
JOURNAL OF MEMBRANE SCIENCE
(2024)
Article
Engineering, Chemical
Rui Gao, Caihong Liu, Andreia F. Faria, Qiang He, Chun Yang, Jun Ma
Summary: A novel copolymer architecture has been developed to address biofouling concerns in thin-film composite (TFC) membranes by integrating anti-fouling, bactericidal, and fouling-release functions. The multifunctional membrane demonstrates promising anti-adhesive properties, self-cleaning ability, and high flux recovery rate.
JOURNAL OF MEMBRANE SCIENCE
(2024)
Article
Engineering, Chemical
Alexander T. Bridge, Noah P. Wamble, Matthew S. Santoso, Joan F. Brennecke, Benny D. Freeman
Summary: This study demonstrates the reproducible preparation of high-flux defect-free asymmetric gas separation membranes using Cyrene(TM) as a majority dope formulation component. By adjusting the volume ratios of Cyrene(TM) and THF, as well as the concentrations of Matrimid(R) and the dry step time, optimal membrane performance is achieved.
JOURNAL OF MEMBRANE SCIENCE
(2024)
Article
Engineering, Chemical
Alessandra Imbrogno, Han Ya Lin, Babak Minofar, Andrea Iris Schaefer
Summary: In this study, a composite nanofiber membrane containing cross-linked beta-cyclodextrin-epichlorohydrin was prepared and evaluated for the removal of steroid hormones. The results showed that the membrane had high adsorption capacity and the ability to form a specific inclusion complex interaction with the hormones, indicating its potential application in hormone removal.
JOURNAL OF MEMBRANE SCIENCE
(2024)
Article
Engineering, Chemical
Bora Shin, Jaewon Shin, Yanuar Chandra Wirasembada, Ki Young Park, Jinwoo Cho
Summary: This study develops a mathematical model to estimate the initial flux of volatile fatty acids in the direct contact membrane distillation process. It identifies the parameters affecting the flux and their relationship with pH.
JOURNAL OF MEMBRANE SCIENCE
(2024)
Article
Engineering, Chemical
Yi-Jui Yeh, Jr Rong Liou, Wei Lin, Kuo-Lun Tung, Wei-Hung Chiang
Summary: This study demonstrates an effective plasma engineering method to create nitrogen-doped graphene quantum dot (NGQD)-inorganic nanocomposites for tunable molecular separation. The composite materials show high separation efficiency and controllable nanopore structures, making them potentially valuable for various applications.
JOURNAL OF MEMBRANE SCIENCE
(2024)
Article
Engineering, Chemical
Horacio Lopez-Marques, Kristofer L. Gleason, Manuel Aguilar-Vega, Rita Sulub-Sulub, J. Ehren Eichler, Hyeonji Oh, C. Buddie Mullins, Benny D. Freeman, Manish Kumar
Summary: In this study, water transport properties in Carbon Molecular Sieve (CMS) membranes were investigated. It was found that membranes synthesized at different pyrolysis temperatures exhibited varying water permeabilities. Compared to other polymeric materials, CMS membranes showed high water permeability, indicating potential for dehydration applications.
JOURNAL OF MEMBRANE SCIENCE
(2024)
Article
Engineering, Chemical
Dmitry A. Alentiev, Roman Yu. Nikiforov, Marina A. Rudakova, Danil P. Zarezin, Maxim A. Topchiy, Andrey F. Asachenko, Nikolay A. Belov, Maxim Bermeshev
Summary: A series of new norbornene-type monomers containing linear and branched substituents were synthesized, and robust thin membranes were prepared by vinyl-addition polymerization. Gas separation performance for the synthesized polymers was evaluated, and the structure of substituent side chains was found to significantly affect gas permeability and CO2 facilitated transport.
JOURNAL OF MEMBRANE SCIENCE
(2024)
Article
Engineering, Chemical
Lei Yan, Qi Zhang, Ze Zhang, Gui-Jie Li, Yi Jin, Xin-Lin Zhang, Yan-Yun Sun
Summary: In this study, a continuous, stable and fast ion transport channel was established through in-situ guided cross-linking of zinc alginate hydrogels on a porous membrane, overcoming the negative pore effect and effectively inhibiting the dendrite growth of zinc anodes and interfacial side reactions.
JOURNAL OF MEMBRANE SCIENCE
(2024)
Article
Engineering, Chemical
Yuqing Zhang, Ailing Zhang, Huiyang He, Yuting Fan, Yongjiang Li, Song Wang, Sanxi Li
Summary: The Langmuir-Blodgett self-assembly process is used to create an ordered SPEEK membrane, which enhances the proton conductivity by three times compared to conventional solution casting method.
JOURNAL OF MEMBRANE SCIENCE
(2024)
Article
Engineering, Chemical
Hasan Ismaeel, David Gibson, Eleonora Ricci, Maria Grazia De Angelis
Summary: In this study, a machine learning-based group contribution method (ML-GC) was developed to predict pure polymer parameters and successfully applied to predict gas solubility and gas solubility isotherms in glassy polymeric membranes. The model showed satisfactory performance on a small dataset, but has the potential to provide more accurate predictions for a wider range of polymers as more data becomes available.
JOURNAL OF MEMBRANE SCIENCE
(2024)
Article
Engineering, Chemical
Yi Ji, Yu Sun, Huilin Li, Qiang Fu, Yan Zhang
Summary: Previous studies have shown that vibration- or rotation-based techniques can effectively mitigate fouling during membrane filtration. However, it is difficult to incorporate these techniques with spiral wound modules (SWMs) widely used in water and wastewater treatment. This study developed a prototype membrane system to accommodate angular vibrations with a modified SWM, and experimental results showed that applying angular vibrations can effectively control algal fouling in an SWM with lower energy consumption compared to traditional methods.
JOURNAL OF MEMBRANE SCIENCE
(2024)
Article
Engineering, Chemical
Lakshmeesha Upadhayaya, Abaynesh Yihdego Gebreyohannes, Muhammad Wakil Shahzad, Usman T. Syed, Sandra L. Aristizabal, Radoslaw Gorecki, Suzana P. Nunes
Summary: Increasing temperatures worldwide pose a significant health risk, exacerbated by high humidity. Conventional air conditioners contribute heavily to carbon dioxide emissions, with dehumidification being a major factor. Membrane-based dehumidification system offers energy efficiency and non-toxic water vapor removal. This study demonstrates a membrane dehumidification system with polymeric hollow fibers coated with a green polyphenol coating, showing remarkable water vapor transport rate and selectivity. Long-term testing reveals minimal decline in vapor transport and a 4-5 times higher coefficient of performance (COP) compared to conventional dehumidifiers, making it a highly competitive, energy-saving device with reduced emissions and a smaller footprint.
JOURNAL OF MEMBRANE SCIENCE
(2024)
Article
Engineering, Chemical
Zhengzhong Zhou, Xue Zhu, Yi Yuan, Shaoqiang Wang, Xiaoshan Meng, Taoli Huhe, Qian Wang
Summary: In this study, lignin, a biomass material, was chemically modified and utilized in the interfacial polymerization process to improve the performance of nanofiltration membranes. The modified membranes showed enhanced hydrophilicity and anti-fouling properties, and the optimization of membrane pore size increased permeability. The study also demonstrated the potential application of the membranes in biogas slurry valorization.
JOURNAL OF MEMBRANE SCIENCE
(2024)
