Article
Chemistry, Multidisciplinary
J. Lemus, C. Paramio, D. Hospital-Benito, C. Moya, R. Santiago, J. Palomar
Summary: The performance of encapsulated ionic liquid (ENIL) sorbents in CO2/CH4 separation was evaluated experimentally. It was found that ENIL sorbents have high CO2 uptake capacity and selectivity, with faster chemical sorption rates compared to physical sorbents. Acetate-based ENIL materials exhibited the best performance in terms of thermodynamics.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2022)
Article
Energy & Fuels
Lanyun Wang, Yuan Yang, Yan Wang, Yongliang Xu, Yao Li, Jianping Wei, Xiaodong Feng, Kun Zhang
Summary: The slow formation rate and low storage capacity of gas hydrates, as well as the harsh conditions and contaminating promoters, pose major challenges to the application of carbon capture and storage (CCS) technology based on hydrate formation. In this study, three types of graphene nanoparticles (nonfunctionalized graphene, graphene oxide, and amino graphene) were tested as additives to accelerate CO2 and CH4 hydrate formation. The results showed that nonfunctionalized graphene promoted the thermodynamics of CO2 hydrate formation, while graphene oxide and amino graphene had no effect or even inhibited the formation. However, graphene oxide and amino graphene effectively enhanced gas consumption. Overall, nonfunctionalized graphene shortened the induction time, while graphene oxide and amino graphene showed potential as additives to improve gas consumption. The presence of oxidized and amine groups was found to inhibit gas hydrate nucleation.
Article
Chemistry, Physical
Linlin Zhao, Yandong Guo, Peng Liu, Peng Xu, Zhenlei Wang, Qixin Wang, Xiaochun Zhang
Summary: In this study, the pore size of nanoporous graphene oxide (NPGO) was modulated by supporting ionic liquid (IL), resulting in enhanced CO2/CH4 selectivity. The optimal pore size was found to be 5.6 Å. Among the ILs studied, NPGO-[EMIM][TF2N] membrane showed the best CO2/CH4 separation performance.
JOURNAL OF MOLECULAR LIQUIDS
(2023)
Article
Environmental Sciences
Imran Khan Swati, Qazi Sohaib, Shuyun Cao, Mohammad Younas, Dan Liu, Jianzhou Gui, Mashallah Rezakazemi
Summary: Four ionic liquids were synthesized for the separation of gases CO2/N-2 and CO2/CH4 through supported ionic liquid membranes (SILMs), with [BSmim][tos] showing the highest solubility coefficient and permeability, as well as the highest selectivity values. The ILs synthesized for this work can be ranked as [BSmim][tos] > [BSmpy][tos] > [Bmim][Cl] > [Bpy][Cl], indicating their potential use for CO2 separation through SILMs.
Article
Energy & Fuels
Xiaoxuan Guo, Fenglei Zhang, Yaseen Muhammad, Zhaotian Cai, Lijing Gao, Ruiping Wei, Guomin Xiao
Summary: This work reports the preparation of a poly(ionic liquid)s catalyst Ag@Co-PIN-NH2 with dual functions of adsorption and activation, which enables the carboxylative cyclization and hydration reactions of propargylic alcohols under low pressure and concentration of CO2. The catalyst demonstrates broad substrate scope, excellent catalytic diversity and reusability. It provides important reference information for the conversion of carbon resources in industrial flue gas into valuable chemicals.
Article
Engineering, Environmental
Mirtha A. O. Lourenco, Tania Frade, Marta Bordonhos, Micaela Castellino, Sergio Bocchini, Moises L. Pinto
Summary: Sponge-like biochar sorbents with enhanced CO2 uptake were prepared from chitosan through dissolution, freeze-drying, and pyrolysis at different temperatures. The pyrolysis temperature influenced the textural properties of the biochar, as well as the type and amount of N-species present. XPS analysis revealed the transformation of amino groups into different N-species during pyrolysis. The biochar adsorbed higher amounts of CO2 compared to CH4 and N-2 gases, with the highest selectivity for CO2/N-2 separation observed for the sample pyrolyzed at 800 degrees C. The adsorption process was predominantly governed by physisorption, and the biochar showed tolerance to water vapor adsorption, indicating its suitability for use in moisture-rich environments.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Nanoscience & Nanotechnology
Farzin Rahmani, Paul Scovazzo, Melissa A. Pasquinelli, Sasan Nouranian
Summary: The study revealed that nanoconfinement of a highly CO2/CH4-selective ionic liquid ([EMIM][SCN]) in porous poly(vinylidene fluoride) (PVDF) matrices can enhance the gas separation performance of membranes. Experimental and simulation results show that decreasing the IL nanoconfinement length can suppress CH4 sorption and increase CO2 affinity to nonpolar PVDF surfaces. Analysis of the IL charge/density distribution in PVDF-confined regions provides insights for better molecular design of membranes for critical gas separation and CO2 capture applications.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Green & Sustainable Science & Technology
Jinwei Zhang, Xiaopeng Li, Zheng Zhu, Tao Chang, Xiying Fu, Yongjing Hao, Xiaocai Meng, Balaji Panchal, Shenjun Qin
Summary: The study introduces a series of hydroxylamino-tethered polymeric ionic liquids with adjustable alkyl length substitutes, which efficiently and stably convert CO2 into cyclic carbonates without the need for metals and solvents.
ADVANCED SUSTAINABLE SYSTEMS
(2021)
Article
Chemistry, Physical
Yizhen Zou, Yuansheng Ge, Qiang Zhang, Wei Liu, Xiaoguang Li, Guoe Cheng, Hanzhong Ke
Summary: Global warming has become a challenging issue due to the emission of large quantities of greenhouse gases, mainly CO2. The transformation of CO2 into chemicals with high additional value is seen as a promising and sustainable method to combat the greenhouse effect. The polyamine-functionalized imidazolyl poly(ionic liquid)s (PILs) modified by triethylenetetramine (TETA) were synthesized as heterogeneous catalysts to convert CO2 into cyclic carbonates, showing high efficiency and stability in the process.
CATALYSIS SCIENCE & TECHNOLOGY
(2022)
Article
Polymer Science
Murilo da Luz, Guilherme Dias, Henrique Zimmer, Franciele L. Bernard, Jailton F. do Nascimento, Sandra Einloft
Summary: This study focused on the essential issue of capturing CO2 from natural gas and flue gas, using PILs assembled with ILs and polymers to enhance CO2 sorption capacity. Different polyols and ILs cations were blended to improve the performance of PILs in CO2 capture, resulting in higher sorption capacity compared to other Poly(ionic liquid)s reported in the literature. The best CO2 sorption result was achieved with a PIL blend containing imidazolium.
Article
Chemistry, Multidisciplinary
Wen-Hsiung Lai, David K. Wang, Hui-Hsin Tseng, Ming-Yen Wey
Summary: Highly selective poly(S-IL) hollow fiber membranes were developed by synthesizing and coating a styrene-based IL monomer, achieving an increased CO2/N-2 selectivity of 29 and a final CO2 permeance of 3.6 GPU through optimization of polymerization conditions. Testing at higher temperatures led to increased gas permeance and selectivity, with a peak CO2/N-2 selectivity of 35 at 50 degrees C.
JOURNAL OF CO2 UTILIZATION
(2022)
Article
Engineering, Environmental
Narmin Noorani, Abbas Mehrdad
Summary: In this study, seven biocompatible poly(ionic liquid)s based on amino acids (AAPIL) were synthesized and their CO2 absorption capacities were investigated. It was found that AAPILs have higher adsorption capacity than normal ionic liquids, mainly due to the amino groups attached to the cation. The results showed that CO2 absorption capacity increases with increase in pressure and reduce in temperature, and the number of amino groups in the AAPILs is responsible for their absorption capacities.
JOURNAL OF POLYMERS AND THE ENVIRONMENT
(2023)
Article
Chemistry, Multidisciplinary
Hamid Reza Mahdavi, Mehran Arzani, Hamed Faramarzi, Omid Bakhtiari, Toraj Mohammadi
Summary: This study investigated the stability of ceramic supported liquid membranes (SLMs) for CO2/CH4 separation. Different materials were used to prepare the SLMs through pressing and coating, and an ionic liquid was immobilized to improve the separation performance. Experimental results demonstrated that the prepared SLMs exhibited stable and reliable separation performance under specific conditions.
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
(2023)
Article
Materials Science, Multidisciplinary
Qianmeng Zhao, Jian Chen, Mengqian Fu, Lili Deng, Yunong Li, Qian Su, Weiguo Cheng
Summary: This study developed a new strategy to enhance the catalytic activity of PILs by regulating their structure. A gradient structure with enriched ionic liquids on the surface was formed by shortening the alkyl chain length of the IL monomer, allowing for better utilization of the active sites. The PIL with a 4-carbon alkyl chain exhibited the best catalytic activity, and further analysis revealed that the release of Br- enhanced the catalytic activity.
APPLIED MATERIALS TODAY
(2023)
Article
Energy & Fuels
Go Iijima, Junichi Naruse, Hajime Shingai, Kyohei Usami, Takanobu Kajino, Hiroaki Yoto, Youhei Morimoto, Ryota Nakajima, Tomohiko Inomata, Hideki Masuda
Summary: The mechanism of faradaic electro-swing for CO2 capture/release on a redox-active organic electrode is studied through cyclic voltammograms and spectroscopic analysis. The electrode exhibited altered waveforms and shifted reduction potentials under CO2 atmosphere. DFT calculations and ATR-SEIRAS analysis confirmed the adsorption of CO2 on the electrode.
Article
Chemistry, Physical
Xabier Telleria-Allika, Jesus M. Ugalde, Eduard Matito, Eloy Ramos-Cordoba, Mauricio Rodriguez-Mayorga, Xabier Lopez
Summary: In this study, the singlet and triplet spin state energies for three-dimensional Hooke atoms, specifically with an even number of electrons, were investigated using Full-CI and CASSCF wavefunctions and various basis sets. The screening effect of electron-electron interaction was also examined using a Yukawa-type potential. The results reveal that the ground state is a singlet for two and eight electron Hooke atoms, while it is a triplet for 4, 6, and 10-electron systems. This study provides insights into the energy components and effects of confinement and electron-electron interaction.
INTERNATIONAL JOURNAL OF QUANTUM CHEMISTRY
(2023)
Article
Materials Science, Ceramics
Nusrat Shaheen, Muhammad Farooq Warsi, Sonia Zulfiqar, Jalal T. Althakafy, Abdullah K. Alanazi, Muhammad Imran Din, Hala M. Abo-Dief, Muhammad Shahid
Summary: The hydrothermal approach was used to synthesize gCN supported carbon coated Lanthanum doped tungsten oxide (C@LWO/gCN) composite. The photodegradation of malachite green (MG), crystal violet (CV), and methylene blue (MB) cationic dyes was carried out using the prepared C@LWO/gCN composite. Characterization techniques such as XRD, FESEM, EDX, FTIR, BET, and UV/Vis spectroscopy were used to analyze the synthesized samples. The results showed that the incorporation of La ions into WO3 lattice and the reduced band gap of the doped sample significantly enhanced the photodegradation capability of the material.
CERAMICS INTERNATIONAL
(2023)
Article
Chemistry, Physical
Gregorio Guzman-Gonzalez, Marta Alvarez-Tirado, Jorge L. Olmedo-Martinez, Matias L. Picchio, Nerea Casado, Maria Forsyth, David Mecerreyes
Summary: This article demonstrates the use of single-component electrolytes in lithium batteries based on new lithium borate ionic liquids at room temperature. The optimized lithium ionic liquids (LiILs) show high ionic conductivity, lithium transference numbers, and electrochemical stability. These LiILs also exhibit high compatibility with lithium-metal electrodes, resulting in excellent electrochemical performance in lithium-metal battery cells.
ADVANCED ENERGY MATERIALS
(2023)
Article
Polymer Science
Jon Lopez de Lacalle, Antonela Gallastegui, Jorge L. Olmedo-Martinez, Melissa Moya, Naroa Lopez-Larrea, Matias L. Picchio, David Mecerreyes
Summary: In this study, a novel family of deep eutectic monomers and corresponding polymers was reported. These polymers were made of (meth)acrylic ammonium salts and biobased polyphenols bearing catechol or pyrogallol motifs. The phenolic chemistry allowed the modulation of ionic polymer properties, resulting in adhesive or tough materials. Furthermore, the phenolic polymeric deep eutectic solvents (polyDES) exhibited metal complexation ability, antibacterial properties, and fast processability by digital light 3D printing.
Article
Materials Science, Ceramics
Tehmina Kousar, Khadijah Mohammedsaleh Katubi, Sonia Zulfiqar, Z. A. Alrowaili, Mohd Zahid Ansari, M. S. Al-Buriahi, Muhammad Aadil, Warda Hassan, Farzana Mahmood, Mehtab Hussain
Summary: Cobalt-nickel mixed ferrite (CNFO) and gadolinium doped cobalt-nickel mixed ferrite (G-CNFO) materials were synthesized using the microemulsion technique. The physicochemical features of the materials were examined, and G-CNFO showed better photocatalytic activity than CNFO under visible light. The optimal parameters for G-CNFO's catalytic properties were investigated, and its enhanced photocatalytic activity was attributed to its tuned band structure, high light harvesting abilities, reduced electron-hole recombination, and nanostructured morphology.
CERAMICS INTERNATIONAL
(2023)
Article
Chemistry, Physical
Patricia Poths, Borna Zandkarimi, Anastassia N. Alexandrova, Elisa Jimenez-Izal
Summary: This study explores the effect of Ge content on PtGe cluster alloys for ethane dehydrogenation. It is found that the addition of Ge improves the stability and selectivity of the catalyst, with the optimal Ge to Pt ratio being 1:4. The concentration of Ge plays an important role in the stability and selectivity of Pt clusters.
Article
Polymer Science
Gisela C. Luque, Melissa Moya, Matias L. Picchio, Vanessa Bagnarello, Idalia Valerio, Jose Bolanos, Maria Vethencourt, Sue-Hellen Gamboa, Liliana C. Tome, Roque J. Minari, David Mecerreyes
Summary: In this study, soft and bioactive iongel materials based on poly(vinyl alcohol) and four ionic liquids were prepared and characterized for wound healing applications. The iongels exhibited flexibility, elasticity, ionic conductivity, and high biocompatibility. They also showed antibacterial and antioxidant properties, with the PVA-[Ch][Sal] iongel displaying the highest inhibition halo for Escherichia coli and the PVA-[Ch][Van] iongel exhibiting the highest antioxidant activity. Additionally, the iongels demonstrated strong anti-inflammatory activity, especially the PVA-[Ch][Sal] iongel with over 63% inhibition at 200 μg/mL.
Article
Polymer Science
Shaghayegh Hamzehlou, Aitor Barquero, Amaia Agirre, Fernando Ruiperez, Jose Ramon Leiza
Summary: The microstructural differences of homopolymers of 2-octyl acrylate (2-OA, bio-based) and 2-ethylhexyl acrylate (2-EHA, oil-based) were investigated, and the study analyzed the origin through calculations and modeling.
EUROPEAN POLYMER JOURNAL
(2023)
Article
Energy & Fuels
Muhammad Usman Khalid, Khadijah Mohammedsaleh Katubi, Sonia Zulfiqar, Z. A. Alrowaili, Muhammad Aadil, M. S. Al-Buriahi, Muhammad Shahid, Muhammad Farooq Warsi
Summary: A novel Ag-MnO2/MXene@NF electrode was developed by incorporating hydrothermal and post-sonication processes to boost its overall activity. Ag-doping and MXene reinforcement improved the conductivity of MnO2, while the sandwiching of Ag-MnO2 NWs between MXene sheets resulted in a hetero-structured composite with superb conductivity and high surface area. The nanostructured and spongy structure of Ag-MnO2/MXene@NF allowed for higher capacitance, impressive rate capability, and superb cyclic activity, making it suitable for advanced energy storage devices.
Article
Materials Science, Multidisciplinary
Iqra Mustafa, Beriham Basha, Sonia Zulfiqar, Amiza Tahir, Farzana Hanif, M. S. Al-Buriahi, Mehwish Akhtar, Khadija Chaudhary
Summary: L-Cysteine functionalized Ag@MnO2 nanocomposite was synthesized using a hydrothermal method for electrochemical sensing of heavy metal ions (HMIs). Advanced techniques were employed to characterize the composition and morphology of L-Cys/Ag@MnO2. The optimized sensor exhibited high sensitivity towards Cd+2 and Pb+2 ions with LOD of 0.065 nM and 0.052 nM, respectively. The practical applicability of the sensor was also demonstrated in tap water, showing its potential for sensing other toxic metal ions in real samples.
MATERIALS CHEMISTRY AND PHYSICS
(2023)
Article
Materials Science, Multidisciplinary
Muhammad Usman Khalid, Maryam Al Huwayz, Sonia Zulfiqar, Eric W. Cochran, Z. A. Alrowaili, M. S. Al-Buriahi, Muhammad Farooq Warsi, Muhammad Shahid
Summary: This study investigates ultralong MnO2 nanowires reinforced with different Cu contents as a new electrode material for supercapacitors. XRD results showed phase transformation of MnO2 from alpha-MnO2 to beta-MnO2 induced by Cu doping. Ultralong nanowires with interconnected network enhance electron transport and electrical conductivity. CV profile and rate law confirmed preferred charge storage follows faradic mechanism. Nanosized morphology and spongy structure of current collector maximize electrode area and protect from pulverization.
MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS
(2023)
Article
Biochemistry & Molecular Biology
Sharon Monaci, Daniela Minudri, Lorenzo Guazzelli, Andrea Mezzetta, David Mecerreyes, Maria Forsyth, Anthony Somers
Summary: Corrosion is a major problem that affects structures and buildings, leading to premature failure and economic loss. Biobased lignin and ionic liquids have shown potential as corrosion inhibitors. This study investigated the inhibitory properties of new biobased lignin ionic liquids and found that one of them exhibited promising performance.
Article
Polymer Science
Antonela Gallastegui, Fabrizia Foglia, Paul F. McMillan, Nerea Casado, Aurelie Gueguen, David Mecerreyes
Summary: High temperature proton exchange membrane fuel cells have been studied for their high energy efficiency, superior heat/water management, CO tolerance, and electrode reaction kinetics. In this study, new poly(diallylmethylammonium) proton conducting membranes with high ionic conductivity at 120°C were developed. The membranes showed good thermal stability and mechanical properties without the need for additives. The effect of different counter-anions on membrane properties was investigated.
Article
Chemistry, Physical
Slawomir J. Grabowski
Summary: Omega B97XD/aug-cc-pVDZ and Omega B97XD/aug-cc-pVTZ calculations were performed on complexes of imidazol-2-ylidene linked by halogen bonds. The properties of interactions in the complexes were analyzed using DFT calculations, QTAIM and NBO methods, as well as energy decomposition analysis. Most of the complexes were linked by medium and strong halogen bonds, often exhibiting characteristics of covalent bonds. Searches through the Cambridge Structural Database also found analogous structures to the theoretically analyzed complexes, which are discussed in this study.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2023)
Article
Polymer Science
Jacopo Teotonico, Daniele Mantione, Laura Ballester-Bayarri, Marta Ximenis, Haritz Sardon, Nicholas Ballard, Fernando Ruiperez
Summary: This study reveals the bond exchange mechanism between boronic esters and the influence of nucleophiles on the exchange rate through theoretical calculations and experimental measurements. The results demonstrate that nucleophiles can significantly accelerate the exchange rate, and this mechanism can be applied in vitrimer materials to greatly reduce the relaxation time.
