Article
Engineering, Electrical & Electronic
K. P. Safna Hussan, Haroon Hussain Moidu, Mohamed Shahin Thayyil, T. V. Jinitha, Anu Antony, G. Govindaraj
Summary: This study reported the fabrication of a novel, low-cost chemiresistive carbon dioxide sensor based on the PVA/[EMIM][SCN] ionogel membrane and evaluated its performance. The sensor showed good selectivity and reliability for CO2 gas, indicating its potential for various industrial applications and future air quality control.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2021)
Article
Chemistry, Physical
Timing Fang, Xiangshuai Meng, Guohui Zhou, Kun Jiang, Xiaomin Liu
Summary: Based on molecular dynamic simulation, this study investigated the mechanism of gas separation and transfer in SILMs. The study found that functional groups indirectly affected the presence and selectivity of CO2 in separation systems, as well as controlled the distribution of ionic liquids. Increasing the width of nanoslits reduced the impact of functional groups on the migration of gas molecules, while the complex structure within the liquid membrane, aided by the addition of graphene nanosheets, contributed to the stable existence of CO2. This study highlights the impact of flexibility on gas separation at a molecular level, which could optimize the development of 2D materials.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
Article
Chemistry, Analytical
Simon Doblinger, Catherine E. Hay, Liliana C. Tome, David Mecerreyes, Debbie S. Silvester
Summary: This research investigates the use of mixed membranes composed of conductive poly(IL)s and ionic liquids in amperometric gas sensors. The study finds that the membranes exhibit high robustness and non-flowing properties, while also showing excellent and reproducible analytical responses towards gases. The results demonstrate the potential of these membranes as designer gas sensor materials for robust sensor devices.
ANALYTICA CHIMICA ACTA
(2022)
Article
Engineering, Chemical
Francesco Galiano, Raffaella Mancuso, Lorenzo Guazzelli, Michele Mauri, Cinzia Chiappe, Roberto Simonutti, Adele Brunetti, Christian S. Pomelli, Giuseppe Barbieri, Bartolo Gabriele, Alberto Figoli
Summary: This study developed novel polymeric membranes based on polymerized ionic liquids for CO2 separation, which showed a preference towards CO2 permeation in wet conditions and some membranes exceeded the Robeson upper bound for the CO2/H2 gas pair.
JOURNAL OF MEMBRANE SCIENCE
(2021)
Article
Biochemistry & Molecular Biology
Ksenia V. Otvagina, Alexey A. Maslov, Diana G. Fukina, Anton N. Petukhov, Yulia B. Malysheva, Andrey V. Vorotyntsev, Tatyana S. Sazanova, Artem A. Atlaskin, Alexander A. Kapinos, Alexandra V. Barysheva, Sergey S. Suvorov, Ivan D. Zanozin, Egor S. Dokin, Ilya V. Vorotyntsev, Olga V. Kazarina
Summary: The current research is focused on developing composite membranes based on polymeric ionic liquids (PILs) containing imidazolium and pyridinium polycations with different counterions. Spectroscopic methods were used to identify the synthesized PILs and study their interaction with carbon dioxide. Wettability measurements were carried out to determine the density and surface free energy of the polymers, which correlated well with the permeability and selectivity observed in gas transport tests. The study found that membranes with selective layers based on PILs exhibited high permeability to CO2 and high ideal selectivity for CO2/CH4 and CO2/N-2. Additionally, the type of counterion had a significant effect on the membrane performance, with polymers based on bis-triflimide showing the highest permeability coefficient. These findings provide valuable insights for the design and optimization of PIL-based membranes for natural and flue gas treatment.
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
Siying Che, Jiachen Guo, Lu Gan, Qiaoxin Xiao, Haoran Li, Yuanbin She, Congmin Wang
Summary: The introduction of fluorophore into ionic liquid (IL) to amplify fluorescence signal via thermally activated delayed fluorescence process resulted in up to 15 fold enhancements. This enhanced luminescence strategy can reduce single-triplet energy split by the tunability of ILs, and has the potential to be extended to more IL types. Additionally, the optical feature of IL sensor makes it a promising candidate for gas fluorescence sensor applications.
GREEN ENERGY & ENVIRONMENT
(2022)
Article
Chemistry, Inorganic & Nuclear
Manish Kumar Mishra, Volodymyr Smetana, Ethan A. Hiti, Hannah B. Wineinger, Fengrui Qu, Anja-Verena Mudring, Robin D. Rogers
Summary: This study serendipitously found that aqueous solutions of short carbon chain tetra(n-alkyl)ammonium hydroxides can be potential candidates for direct air carbon capture when used as reagents. The presence of certain compounds can enhance the sorption efficiency of carbon dioxide.
DALTON TRANSACTIONS
(2022)
Article
Biochemistry & Molecular Biology
Bruna F. Soares, Daniil R. Nosov, Jose M. Pires, Andrey A. Tyutyunov, Elena I. Lozinskaya, Dmitrii Y. Antonov, Alexander S. Shaplov, Isabel M. Marrucho
Summary: This work explores the gas permeation performance of two newly-designed ionic liquids in supported ionic liquid membranes (SILM) and compares them with the overall gas permeation performance of functionalized ionic liquids. The results show that one of the ionic liquids exhibits unexpectedly high CO2 permeability, surpassing the others. The prepared membranes have varying selectivities. In addition, the thermophysical properties of the ionic liquids were investigated and compared with others.
Article
Engineering, Chemical
Yifeng Chen, Biao Li, Jian Wu, Zhuhong Yang, Xiaohua Lu, Xiaoyan Ji
Summary: In this study, the kinetic properties of CO2 in aqueous choline-amino acids were systematically investigated, resulting in the proposal of a new absorption ability index. The results indicated that 30 wt% aqueous choline-serine is a promising absorbent for CO2 separation.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Article
Engineering, Chemical
Yifeng Chen, Sida Liu, Kang Sun, Jianchun Jiang, Dong Wang, Zhuhong Yang, Xiaoyan Ji
Summary: The kinetic properties of CO2 in a hybrid absorbent were determined, and an index called absorbility was proposed to evaluate the CO2 separation performance, combining the kinetic and thermodynamic properties. The results indicate that the hybrid absorbent performs comparably to traditional aqueous monoethanolamine, with the advantages of low regeneration temperature and low environmental impact.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Chemistry, Multidisciplinary
Weiwei Guo, Shoujie Liu, Xingxing Tan, Ruizhi Wu, Xupeng Yan, Chunjun Chen, Qinggong Zhu, Lirong Zheng, Jingyuan Ma, Jing Zhang, Yuying Huang, Xiaofu Sun, Buxing Han
Summary: This study reports a new catalyst design with atomically dispersed Sn sites anchored on defective CuO catalysts for CO2 electroreduction to methanol, demonstrating high efficiency and stability in H-cells.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Chemistry, Physical
Zongyang Liu, Xiao-Qiang Bian, Suling Duan, Lianguo Wang, Rayhanul Islam Fahim
Summary: In this study, machine learning methods were used to predict the solubility of carbon dioxide in ionic liquids. Experimental and simulated data were collected to train the models, and different machine learning algorithms were employed. The performance of the models was evaluated using various error indexes, and the results showed that the PSO-SVR model had the highest accuracy and the lowest time consumption.
JOURNAL OF MOLECULAR LIQUIDS
(2023)
Article
Thermodynamics
Anirban Dey, Sweta Chetananand Balchandani
Summary: Statistical non-rigorous models are developed to predict CO2 solubility in different aqueous blends, which can estimate the liquid phase CO2 loading in different solvent formulations. The proposed models show good agreement with experimental data on CO2 solubility.
INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER
(2022)
Article
Chemistry, Multidisciplinary
Narges Mokhtarinori, Zhenzhen Yang, Sheng Dai
Summary: Porous liquids (PLs) are a promising category of sorbents in carbon capture and separation, integrating the advantages of flowing liquid and porous solid systems. Various methods have been used to engineer pores into liquid sorbents. PLs have shown significant progress and potential in carbon capture and separation.
CURRENT OPINION IN GREEN AND SUSTAINABLE CHEMISTRY
(2022)
