Article
Chemistry, Analytical
Silvia Mena, Esteve Ribas, Clara Richart, Iluminada Gallardo, Jordi Faraudo, Scott K. Shaw, Gonzalo Guirado
Summary: The paper focuses on the role of carbon dioxide in controlling the Earth's temperature and the environmental problems caused by its increased concentration in the atmosphere. It discusses the use of ionic liquids for efficient CO2 capture and conversion, utilizing electrochemical, spectroscopic, and molecular dynamics techniques to understand the reduction mechanism under various conditions. The research opens up possibilities for theoretical-experimental approaches to determine the CO2 reduction mechanism and the dependency of product formation on the electrode material and solvent used.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2021)
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, Multidisciplinary
Guillaume Zante, Christopher E. Elgar, Katherine George, Andrew P. Abbott, Jennifer M. Hartley
Summary: The study explores the properties of concentrated ionic fluids and distinguishes them from concentrated aqueous brines. It demonstrates a continuous relationship between molar conductivity and fluidity, regardless of cation, charge density, or ionic radius. The diffusion coefficients of specific metal chlorides in various ionic fluids show a linear correlation with fluidity. By adjusting chloride and water activity, selective etching of mixed metal waste streams can be achieved.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Review
Chemistry, Physical
Kranthi Kumar Maniam, Shiladitya Paul
Summary: This review explores the potential uses of ionic liquids in renewable energy, focusing on CO2 electroreduction and organic molecule electrosynthesis via CO2 transformation. Recent advances and future prospects in the field are briefly summarized, along with discussions on the application of deep eutectic solvents in CO2 electroreduction. The critical techno-commercial issues related to the use of ILs and DESs in various processes are also reviewed.
Article
Chemistry, Multidisciplinary
Ming Ren, Jian Qiao, Yulian Wang, Kunjie Wu, Lizhong Dong, Xiaofan Shen, Huichao Zhang, Wei Yang, Yulong Wu, Zhenzhong Yong, Wei Chen, Yongyi Zhang, Jiangtao Di, Qingwen Li
Summary: An ionic-liquid-in-nanofibers sheathed carbon nanotube yarn muscle has been developed, which is strong, stable, and able to achieve a high contraction rate through utilizing accumulated isometric stress. These yarn muscles are tightly bundled, making them suitable for lifting heavy weights and gripping objects, and can serve as desirable actuation components for robotic devices.
Article
Chemistry, Multidisciplinary
Matthew A. Stalcup, Christian K. Nilles, Bala Subramaniam, James D. Blakemore, Kevin C. Leonard
Summary: We elucidate the mechanism and rate-determining steps of the electrochemical carboxylation of acetophenone as a function of CO2 concentration using a robust finite element analysis model. The first electrochemical reduction of acetophenone is followed by the homogeneous chemical addition of CO2. The electrochemical reduction of the acetophenone-CO2 adduct is more facile than that of acetophenone, resulting in an Electrochemical-Chemical-Electrochemical (ECE) reaction pathway.
CHEMICAL COMMUNICATIONS
(2023)
Review
Chemistry, Multidisciplinary
Shaohua Zhang, Shusong Liu, Yiying Sun, Shihao Li, Jiafu Shi, Zhongyi Jiang
Summary: Efficient chemical transformation is essential for modern society's sustainable development. Enzyme-photo-coupled catalytic systems (EPCS) show promise in solar-driven 'molecular editing', but the design of efficient and stable EPCS is challenged by the involvement of multiple components and catalytic processes. Identifying connectivity and compatibility between biocatalytic and photocatalytic ensembles as crucial factors governing EPCS performance, solutions for undesirable connectivity and low compatibility are discussed to propose designing principles for EPCS and provide a future perspective.
CHEMICAL SOCIETY REVIEWS
(2021)
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
Engineering, Chemical
Mingdong Sun, Dongxin Pan, Tingting Ye, Jing Gu, Yu Zhou, Jun Wang
Summary: Ionic porous polyamides were used as precursors to prepare functional carbon materials via one-step pyrolysis process, showing promise for thefabrication of metal-free electrocatalysts for CO2RR.
CHINESE JOURNAL OF CHEMICAL ENGINEERING
(2023)
Article
Chemistry, Multidisciplinary
Jocasta Avila, Chiara Corsini, Cintia M. Correa, Martin Rosenthal, Agilio Padua, Margarida Costa Gomes
Summary: This Perspective highlights the pathways to prepare porous ionic liquids using easily accessible materials for reduced environmental impact. The study demonstrates that suspensions of porous solids are stable in eutectic mixtures, which indicates their potential in preparing porous ionic liquids. Porous ionic liquids maintain the wide electrochemical window observed in their precursor pure ionic liquids, making them suitable for green electrochemical reactions, especially those involving gases with enhanced solubility in the porous suspensions. Furthermore, their capacity as gas-rich media suggests potential sustainable biomedical and pharmaceutical applications, provided that non-toxic, biocompatible ionic liquids and porous solids are utilized.
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
Chemistry, Multidisciplinary
Ahmed M. Sheta, Anas Alkayal, Mohammad A. Mashaly, Samy B. Said, Saad S. Elmorsy, Andrei V. Malkov, Benjamin R. Buckley
Summary: In this study, an electrochemical approach was explored for the hydrocarboxylation of α,β-unsaturated alkenes with excellent regioselectivity and the ability to carboxylate hindered substrates to afford α-quaternary center carboxylic acids. The process reported requires no chromatography, and products can be purified by simple crystallization from the reaction mixture after work-up.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
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
Engineering, Environmental
Jonathan Albo, Muhammad I. Qadir, Mario Samperi, Jesum Alves Fernandes, Imanol de Pedro, Jairton Dupont
Summary: The study achieved continuous conversion of CO2 into methanol using Cu nanoparticles synthesized in TiO2 photocatalyst in an optofluidic microreactor, outperforming previous Cu/TiO2-based systems and common CO2 photoreactors.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Chemistry, Multidisciplinary
Alexander J. Kibler, Virginia S. Souza, Jesum Alves Fernandes, William Lewis, Stephen P. Argent, Jairton Dupont, Graham N. Newton
Summary: In this study, an organic-inorganic hybrid species based on the Wells-Dawson polyoxotungstate and novel fluorescent benzothiadiazole-imidazolium cations has been synthesized. X-ray crystallographic analysis revealed a hydrogen-bonded superstructure between the inorganic and organic components, with non-equivalent cations showing varying degrees of rotation between the BTD and imidazolium rings. UV-vis diffuse reflectance spectra indicated a band gap of 3.13 eV, while solid-state fluorescence properties suggested electron transfer between the inorganic and organic components.
FRONTIERS IN CHEMISTRY
(2021)
Article
Chemistry, Physical
Muhammad Qadir, Daniel L. Baptista, Jairton Dupont
Summary: This study demonstrates that ruthenium nanoparticles decorated on TiO2 nanomaterials with different morphologies show high efficiency and selectivity for the allylic oxidation of cycloalkenes. The Ru/TiO2 nanofibers display the highest activity, while Ru/TiO2 nanoparticles and nanotubes also exhibit good conversion rates. The catalytic efficiency of Ru/TiO2 nanomaterials is higher compared to Ru NPs and TiO2 nanomaterials individually, indicating a positive synergistic effect. The results suggest that the crystalline structure, pore volume, and surface area of the supports play a role in determining the activity of Ru/TiO2 NPs and NFs.
Article
Chemistry, Physical
Johnlee Inacio Pacheco, Felipe Antonio Lucca Sanchez, Wellington D. Goncalves, Gustavo Chacon, Vania Caldas de Sousa
Summary: The generation of energy by thermoelectric plants powered by biomass in Brazil has grown by approximately 3%, with 8.8% of electric energy in Brazil being generated using biomass. The use of residues and electrochemical processes to evaluate gases as clean energy sources are becoming more common.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Chemistry, Physical
Michele O. Vieira, Wesley F. Monteiro, Thuany M. Ferreira, Josiel B. Domingos, Jairton Dupont, Francisco P. dos Santos, Jackson D. Scholten
Summary: Surface active ionic liquids, particularly dicationic ILs, have attracted interest for their sustainable catalytic and extraction properties. The anion plays a crucial role in modulating the ILs' properties in solution, with some ILs showing superior ionic organization.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Article
Chemistry, Physical
Michael Nazarkovsky, Bozena Czech, Alicja Zmudka, Viktor M. Bogatyrov, Olena Artiushenko, Vladimir Zaitsev, Tatiana D. Saint-Pierre, Rafael C. Rocha, Jiang Kai, Yutao Xing, Wellington D. G. Goncalves, Amanda G. Veiga, Maria Luiza M. Rocco, Syed Hamza Safeer, Mariia Galaburda, Victor Carozo, Ricardo Q. Aucelio, Richard J. Caraballo-Vivas, Olena Oranska, Jairton Dupont
Summary: Novel colorized zinc oxide-nanosilica composites were synthesized and analyzed, showing a direct correlation between ZnO concentration and color/optical properties. The most active sample had a higher ZnO concentration and exhibited significant visible light absorbance and luminescence. XPS studies revealed the formation of nanocomposites and impurities in ZnO that contributed to the optical and catalytic behavior, confirming the potential for wastewater detoxification.
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
(2021)
Article
Chemistry, Physical
Muhammad Qadir, Jonathan Albo, Imanol de Pedro, Miroslav Cieslar, Ignacio Hernandez, Philipp Bruener, Thomas Grehl, Marcus Castegnaro, Jonder Morais, Paulo R. Martins, Cristiane G. Silva, Muhammad Nisar, Jairton Dupont
Summary: Efficient and robust photocatalysts have been developed by combining bimetallic CuNi nanoparticles and TiO2. The CuNi NPs decorated TiO2 significantly promote the generation of CH3OH and syngas under visible light irradiation, achieving high yields and quantum efficiency.
MOLECULAR CATALYSIS
(2022)
Review
Chemistry, Multidisciplinary
Pedro Migowski, Pedro Lozano, Jairton Dupont
Summary: 1,3-Dialkyl imidazolium salts are versatile ionic liquids (ILs) that can function as solvents, supports, or modifiers for catalytic processes. They can modify the properties of catalysts and control the access of substrates and expulsion of products. The miscibility, hydrophobicity, ionicity, and basicity of ILs can be adjusted by choosing the appropriate alkyl side chain and anions, allowing fine-tuning of the catalytic system. ILs also offer the possibility of designing greener catalytic tools and various methods for product separation.
Review
Chemistry, Multidisciplinary
Muhammad I. Qadir, Jairton Dupont
Summary: Ionic liquids (ILs) are potential materials for capturing and converting CO2 to energy-adducts. They create a confined space around catalysts, controlling the diffusion of reactants, intermediates, and products through their hydrophobicity and contact ion pairs. By combining ILs with semiconductors, the electronic properties of the catalysts can be modulated to facilitate CO2 activation and increase photoreduction.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Multidisciplinary
Vinicius K. Tomazett, Gustavo Chacon, Graciane Marin, Marcus V. Castegnaro, Rafael P. das Chagas, Luciano M. Liao, Jairton Dupont, Muhammad I. Qadir
Summary: Chemical fixation of CO2 to epoxides is an efficient and environmentally friendly approach to produce cyclic carbonates. By using the n-butyl-3-methylimidazulim trichlorozincate (BMIm.ZnCl3) ionic liquid as catalyst, high conversion rates (56-95%) of different aromatic and aliphatic epoxides were achieved under ambient reaction conditions. The activity of the catalyst was further enhanced by supporting the IL on SiO2, resulting in a maximum conversion and yield (99%) of cyclic carbonates at higher reaction conditions. The reaction mechanism was found to involve strong hydrogen bonding between the epoxide oxygen and the C2-H of the imidazolium cation, with the ZnCl3 anion acting as a nucleophile to facilitate ring opening without dissociation.
JOURNAL OF CO2 UTILIZATION
(2023)
Article
Chemistry, Physical
Muhammad I. Qadir, Marcus V. Castegnaro, Felipe F. Selau, Daniel L. Baptista, Gustavo Chacon, Renato B. Pontes, Allan M. Lisboa, Dario Eberhardt, Jairton Dupont
Summary: Reducing atmospheric CO2 is a major challenge due to increased industrial activities and its contribution to global warming. One effective approach is converting CO2 into C1 feedstocks like formic acid (FA). Ruthenium clusters and nanoparticles prepared by magnetron sputtering in different supported ionic liquid phases (SILPs) showed high efficiency in producing free FA. DFT calculations supported the hydrogenation of HCO3* to FA as the mechanistic approach.
APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY
(2024)
Article
Materials Science, Multidisciplinary
Niqab Khan, Rogerio Nunes Wolff, Hameed Ullah, Gustavo J. Chacon, Washington Santa Rosa, Jairton Dupont, Renato Vitalino Goncalves, Sherdil Khan
Summary: A dopant-free synthesis approach is presented to control the electronic structure of a semiconductor. BiVO4 synthesized using ionic liquids (ILs) showed improved photocatalytic performance, although it had a higher defect density and chemisorption compared to the conventional hydrothermal process.
MATERIALS ADVANCES
(2022)
Article
Chemistry, Multidisciplinary
Emerson C. Kohlrausch, Roberto dos Reis, Rhys W. Lodge, Isabel Vicente, Alexandre G. Brolo, Jairton Dupont, Jesum Alves Fernandes, Marcos J. L. Santos
Summary: The presence of a specific fraction of {112} facets on the TiO2 surface is found to be the key limiting step for anatase-to-rutile phase transition, instead of the crystallite size. This discovery allows for controlling the phase transition over a wide range of temperatures by suppressing the formation of {112} facets on anatase particles using specific concentrations of fluorinated ionic liquid during TiO2 synthesis.
NANOSCALE ADVANCES
(2021)
Article
Chemistry, Multidisciplinary
Gabriel Abarca, Wellington D. G. Goncalves, Brunno L. Albuquerque, Jairton Dupont, Martin H. G. Prechtl, Jackson D. Scholten
Summary: Bimetallic RuPd nanoparticles immobilized in ionic liquids showed high catalytic activity for the selective hydrogenation of benzene and phenol, producing cyclohexane and cyclohexanol. The activity and selectivity are dependent on the ratio of Ru to Pd in the bimetallic nanoparticles.
NEW JOURNAL OF CHEMISTRY
(2021)