Article
Engineering, Environmental
Xiaoyang Li, Xinyu Hu, Yida Qiao, Tianying Lu, Yunxiu Bai, Jiarong Xiong, Xinyang Li, Qingqiang Gou, Jun Ge
Summary: By constructing an enzyme-bimetallic hybrid catalyst on cross-linked lipase aggregates, the intrinsic incompatibility between enzyme and chemical catalysts in one-pot chemoenzymatic cascade reactions was overcome, resulting in improved activity and lower reaction temperature.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Multidisciplinary
Tian Yang, Juntao Yang, Xin Deng, Evanie Franz, Lukas Fromm, Nicola Taccardi, Zhi Liu, Andreas Goerling, Peter Wasserscheid, Olaf Brummel, Joerg Libuda
Summary: The solid catalyst with ionic liquid layer (SCILL) is a successful concept in heterogeneous catalysis and electrocatalysis for selective transformation of organic compounds.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Chemistry, Multidisciplinary
Guo-Yi Duan, Xiao-Qiang Li, Guang-Rong Ding, Li-Jun Han, Bao-Hua Xu, Suo-Jiang Zhang
Summary: A poly(ionic liquid) (PIL)-based Cu-0-Cu-I tandem catalyst was designed for the electroreduction of CO2 to C2+ products. The catalyst showed high reaction rate and selectivity, with a high Faradaic efficiency and partial current density. Mechanistic studies revealed the importance of Cu-0-PIL and PIL-Cu-I interfaces in achieving the desired reactivity.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Chemistry, Physical
Antonio Leyva-Perez, Cristina Bilanin, Matea Bacic, Rossella Greco
Summary: The study reveals that commercial ionic liquids can stabilize microdroplets of water with pH < 0 and pH > 14 simultaneously and without any additive, and this micro-structured liquid medium catalyzes organic reactions.
Article
Chemistry, Applied
Xiaoyang Li, Yufei Cao, Jiarong Xiong, Jun Li, Hai Xiao, Xinyang Li, Qingqiang Gou, Jun Ge
Summary: Combining enzymatic and single-metal-atom catalysis shows promise for green chemical synthesis. This study presents a one-pot chemoenzymatic cascade reaction for the asymmetric synthesis of (R)-1-(4-biphenyl) ethanol, using a highly active and selective enzyme-metal-single-atom hybrid as the catalyst. The Pd single atoms anchored lipase (Pd1/CALB-P) efficiently drives cascade reactions in aqueous solution, achieving facile synthesis of chiral biaryl alcohols.
CHINESE JOURNAL OF CATALYSIS
(2023)
Article
Chemistry, Multidisciplinary
Ben Ma, Qi Xia, Deyang Wang, Ji-Kang Jin, Zekun Li, Qiu-Jiang Liang, Meng-Ying Sun, Dongyi Liu, Li-Juan Liu, Hui-Xing Shu, Jun Yang, Dan Li, Jian He
Summary: Visible-light copper photocatalysis has become a viable technology for sustainable synthetic processes. In this study, a metal-organic framework (MOF)-supported copper(I) photocatalyst was developed for iminyl radical-mediated reactions. The heterogenized copper photosensitizer exhibited higher catalytic activity than its homogeneous counterpart due to site isolation. The immobilization of copper species on MOF supports using a hydroxamic acid linker allowed for high recyclability of the heterogeneous catalysts and the preparation of previously unavailable monomeric copper species through post-synthetic modification on MOF surfaces. This study highlights the potential of MOF-based heterogeneous catalytic systems in addressing challenges in synthetic methodologies and mechanistic investigations of transition-metal photoredox catalysis.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Multidisciplinary
Roberta A. Kehoe, Mark E. Light, David J. Jones, Gerard P. McGlacken
Summary: One-pot processes offer an environmentally friendly and time-saving approach to building complex molecules. This study presents a phosphine-free, inorganic base free, multi-step, one-pot reaction sequence for the rapid synthesis of complex medicinally relevant heterocycles. The approach combines three distinct reactions using a single pre-catalyst and achieves excellent yields. The study also reports favorable mass productivity, environmental impact factor, solvent intensity, and process mass intensity values.
Article
Chemistry, Physical
Mohsen Bakhtiarian, Mohammad Mehdi Khodaei
Summary: In this study, a pectin-supported dual acidic pyridinium ionic liquid catalyst was developed for the efficient synthesis of pyrazole derivatives. The catalyst exhibited remarkable catalytic activity and good recyclability in the multi-component reaction.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
Article
Chemistry, Physical
Roberto Calmanti, Nicola Sargentoni, Maurizio Selva, Alvise Perosa
Summary: The study presents a new catalytic protocol capable of converting unsaturated methyl oleate into carbonate in a single step, achieving high yield and retention of cis-configuration.
Review
Chemistry, Inorganic & Nuclear
Marina M. Seitkalieva, Dmitriy E. Samoylenko, Kristina A. Lotsman, Konstantin S. Rodygin, Valentine P. Ananikov
Summary: The development of metal nanoparticle chemistry in ionic liquids has made a significant impact on fields such as catalysis, energy research, nanotechnology, and materials science. Various methods for producing metal nanoparticles in ILs are highlighted, with a focus on catalytic activity in different reactions.
COORDINATION CHEMISTRY REVIEWS
(2021)
Review
Biochemistry & Molecular Biology
Anna Wolny, Anna Chrobok
Summary: Supported ionic liquid phases offer several advantages in catalysis, providing catalytic activity or efficient matrix and improving mass transport. Silica-based materials, due to their cost-efficiency and specific properties, are widely used in this field.
Article
Chemistry, Physical
Geeta Durga, Pooja Kalra, Vinay Kumar Verma, Kanjur Wangdi, Anuradha Mishra
Summary: Ionic liquids have established themselves as a preferred solvent in synthetic chemistry, particularly in polymer chemistry. They are versatile solvents used for polymeric reactions and can also be polymerized to enhance their inherent properties, finding applications in various fields such as electrochemical devices, nanocomposites, optoelectronics, and more. This comprehensive review covers both aspects of ILs as a solvent in polymeric reactions and their polymeric form, poly(ionic liquids), presenting their diverse potential applications.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Article
Chemistry, Multidisciplinary
Ying Liu, Yi Wang, Bowen Jiang, Leizhi Zheng, Zhibing Zhang, Jia Liu, Zheng Zhou
Summary: A halogen-free ionic liquid catalytic system was designed for the conversion of CO2 and glycerol into glycerol carbonate. The system showed high catalytic activity, resulting in a 91% yield of chloropropylene carbonate and a 93% yield of glycerol carbonate. The mechanism verification experiments indicated that the synergistic activation of substrates by the anion and cation contributed to the high catalytic activity.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2023)
Article
Chemistry, Physical
Jixia Wang, Yabing Tian, Shiguo Zhang, Yan Zhang
Summary: This study successfully synthesized chiral porous poly(ionic liquid)s (CPPILs) containing chiral salen Mn(III) complex, which showed excellent catalytic performance in asymmetric synthesis. These catalysts possess large specific surface area, abundant pore structure, and ionic active sites, and can efficiently catalyze the epoxidation of styrene. Moreover, these catalysts exhibit good stability and recyclability.
APPLIED CATALYSIS A-GENERAL
(2022)
Article
Agricultural Engineering
Baskaran Sangeetha, Srinivasan Mohana Priya, Ravichandran Pravin, Krishnamurthi Tamilarasan, Gurunathan Baskar
Summary: In this study, Ricinus communis seed oil with high free fatty acid content was used to produce biodiesel using 1-(2,3-dihydroxy)-propyl-3-methylimidazolium hydroxide as a catalyst. The optimized conditions resulted in a biodiesel yield of 97.83%. The technoeconomic analysis showed a total revenue of 20,455,431 $/yr, with various profitability indicators.
BIORESOURCE TECHNOLOGY
(2023)
Article
Chemistry, Physical
Sami Sainio, Niklas Wester, Anja Aarva, Charles J. Titus, Dennis Nordlund, Esko Kauppinen, Elli Leppanen, Tommi Palomaki, Jessica E. Koehne, Olli Pitkanen, Krisztian Kordas, Maria Kim, Harri Lipsanen, Miran Mozetic, Miguel A. Caro, M. Meyyappan, Jari Koskinen, Tomi Laurila
Summary: Successful deployment of carbon nanomaterials in various applications relies on selecting, synthesizing, and tailoring surface properties. By analyzing soft X-ray absorption spectroscopy spectra, a comprehensive understanding of the chemical trends and surface properties of carbon nanomaterials has been achieved.
JOURNAL OF PHYSICAL CHEMISTRY C
(2021)
Article
Chemistry, Physical
Petra S. Palvolgyi, Daniel Sebok, Imre Szenti, Eva Bozo, Henri Ervasti, Olli Pitkanen, Jari Hannu, Heli Jantunen, Marko E. Leinonen, Sami Myllymaki, Akos Kukovecz, Krisztian Kordas
Summary: In this study, highly porous and lightweight silica foams with extremely low permittivity and loss factor were synthesized by a template-assisted sol-gel method for applications in next generation wireless communication systems. Micropatterns of electrically conductive metals, such as Ag thin films, were successfully deposited on the smooth surfaces of the foams for radio frequency filter structures.
Article
Nanoscience & Nanotechnology
Jin Zhou, Topias Jarvinen, Olli Pitkanen, Zoltan Konya, Akos Kukovecz, Krisztian Kordas
Summary: Simple, low-cost, low-energy, sensitive, and selective gas sensors are in high demand, especially for applications requiring a large number of sensors in networks. By developing a new type of resistive sensor device based on a composite of single-wall carbon nanotubes and an ion-in-conjugation polymer, the detection of H2S and NH3 in air at room temperature is made possible.
Article
Nanoscience & Nanotechnology
Henri Ervasti, Topias Jarvinen, Olli Pitkanen, Eva Bozo, Johanna Hiitola-Keinanen, Olli-Heikki Huttunen, Jussi Hiltunen, Krisztian Kordas
Summary: Printed piezoresistive strain sensors based on stretchable roll-to-roll screen-printed silver electrodes and inkjet-deposited single-wall carbon nanotube micropatterns have been developed in this study, demonstrating high sensitivity, pressure sensitivity, and suitability for skin-mounted monitoring of human movements.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Engineering, Environmental
Nemanja Vucetic, Pasi Virtanen, Andrey Shchukarev, Tapio Salmi, Jyri-Pekka Mikkola
Summary: This study provides a step forward in understanding the Mizoroki-Heck reaction, specifically when iodobenzene and butyl acrylate react using a Pd Supported Ionic Liquid Catalyst (SILCA) in a continuous packed bed reactor. The catalyst leaching was minimized and a simple continuous flow process was proposed, achieving high catalytic activity and productivity.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Materials Science, Multidisciplinary
Jin Zhou, Seyed Hossein Hosseini Shokouh, Hannu-Pekka Komsa, Lassi Rieppo, Linfan Cui, Zhong-Peng Lv, Krisztian Kordas
Summary: This study demonstrates a facile method to prepare a hybrid of Ti3C2Tx and intercalated polysquaraine through microwave-assisted in situ polymerization, which exhibits a good sensing performance for NH3 detection based on gas sensors.
ADVANCED MATERIALS TECHNOLOGIES
(2022)
Correction
Nanoscience & Nanotechnology
Petra S. Palvolgyi, Mikko Nelo, Olli Pitkanen, Jani Perantie, Henrikki Liimatainen, Sami Myllymaki, Heli Jantunen, Krisztian Kordas
Article
Nanoscience & Nanotechnology
Seyed Hossein Hosseini-Shokouh, Jin Zhou, Ethan Berger, Zhong-Peng Lv, Xiaodan Hong, Vesa Virtanen, Krisztian Kordas, Hannu -Pekka Komsa
Summary: Cost-effective and high-performance H2S sensors are in demand for human health and environmental monitoring. MXenes, specifically 2D transition-metal carbides and nitrides, have shown potential for gas sensing due to their good conductivity and abundant surface functional groups. This study reports a negative response of pristine Ti3C2Tx thin films for H2S sensing and further improvement of sensor performance using a composite of Ti3C2Tx flakes and conjugated polymers (PDS-Cl), achieving a thirtyfold sensing enhancement and a low limit of detection. The findings also contribute to a better understanding of the sensing mechanism and selectivity of MXene-based composites.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Engineering, Multidisciplinary
Muthusamy Saranya, Janne T. Koivisto, Ana C. M. Carvalho, Fernando Sato, Andrea Lassenberger, Lionel Porcar, Baleeswaraiah Muchharla, Saikat Talapatra, Birgitte H. McDonagh, Lauriane Janssen, Olli Pitkanen, Minna Kellomaki, Krisztian Kordas, Gabriela S. Lorite
Summary: Injectable scaffolds are a promising strategy for tissue repair and regeneration. The design of an aligned injectable hydrogel-based scaffold via remote-induced alignment is reported in this study. The use of low magnetic field to align carboxylated multi-walled carbon nanotubes into the hydrogel is demonstrated, showing potential for engineering functional tissues with specific cell orientation.
COMPOSITES PART B-ENGINEERING
(2023)
Article
Engineering, Electrical & Electronic
Mikko Kokkonen, Petra S. Palvolgyi, Rafal Sliz, Heli Jantunen, Krisztian Kordas, Sami Myllymaki
Summary: In this study, a 300 GHz Fresnel zone plate lens supported by an ultraporous silica foam substrate with a nanocellulose thin film coating was demonstrated. The experimental results showed that the lens had a total gain of 20 dB and an angular beamwidth of 2.9 degrees when connected to a waveguide, which agreed well with microwave simulations. The proposed lens structure has advantages such as small volume, ultralight weight, and a 60 GHz bandwidth, making it particularly suitable for radio front-ends of future 6G devices.
IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS
(2023)
Correction
Engineering, Electrical & Electronic
Eva Bozo, Aron Dombovari, Melinda Mohl, Vesa K. Virtanen, Simo Saarakkala, Robert Vajtai, Krisztian Kordas
IEEE SENSORS JOURNAL
(2023)
Article
Chemistry, Physical
Jin Zhou, Seyed Hossein Hosseini Shokouh, Linfan Cui, Topias Jarvinen, Olli Pitkanen, Zhong-Peng Lv, Krisztian Kordas
Summary: A core-shell composite, Ti3C2Tx@croconaine (poly(1,5-diaminonaphthalene-croconaine), PDAC), for NH3 detection, was prepared by a facile in situ polymerization reaction, which exhibits significantly enhanced sensitivity and detection limit compared to pristine Ti3C2Tx. The improved sensing performance is attributed to the presence of PDAC facilitating the adsorption of NH3 and changing the tunneling conductivity between Ti3C2Tx domains.
NANOSCALE HORIZONS
(2023)
Article
Materials Science, Multidisciplinary
Petra S. Palvolgyi, Mikko Kokkonen, Rafal Sliz, Heli Jantunen, Krisztian Kordas, Sami Myllymaki
Summary: This study demonstrates a lightweight dielectric bullet-shaped lens operating in the frequency range of 110-170 GHz, which is used to guide the propagation of electromagnetic waves. The material of the lens is a composite of silica nanoshells and poly(methylmethacrylate), which is highly porous and has low dielectric permittivity and loss tangent. The size of the collimated beam and the increase of the corresponding field strength vary depending on the frequency of the waves.
ADVANCED PHOTONICS RESEARCH
(2023)
Article
Chemistry, Multidisciplinary
Topias Jarvinen, Seyed-Hossein Hosseini Shokouh, Sami Sainio, Olli Pitkanen, Krisztian Kordas
Summary: This study shows that vertically oriented polycrystalline thin films of MoS2 and WS2 grown on highly doped silicon can achieve on-chip photodetectors with high sensitivity and ultrafast response time. The results are significantly better than previous lateral probing setups. The easy-to-grow vertically oriented polycrystalline thin film structures may have important applications in photodetectors and devices for imaging, sensing, and telecommunication.
NANOSCALE ADVANCES
(2022)
Article
Chemistry, Physical
He Zhao, Kalyani Chordiya, Petri Leukkunen, Alexey Popov, Mousumi Upadhyay Kahaly, Krisztian Kordas, Satu Ojala
Summary: This study presents a novel approach to stabilize metal halide perovskites in water using dimethylammonium iodide (DAI), without the need for acids or coatings. The stability is achieved through a surface dissolution-recrystallization process, where the concentration of DAI and I- ions play critical roles.
Article
Chemistry, Physical
Yifan Sun, Ye Lv, Wei Li, Jinli Zhang, Yan Fu
Summary: In this study, PtRu electrocatalysts were fabricated on carbon paper via cyclic electrodeposition for the electrocatalytic hydrogenation (ECH) of phenol. The Pt3Ru3 catalyst exhibited excellent activity and stability for the conversion of phenol to cyclohexanol at ambient temperature and various current densities. The in situ Raman spectroscopy and kinetic study revealed the hydrogenation mechanism of phenol over Pt3Ru3 in acidic electrolyte, providing an effective electrochemical strategy for the facile construction of durable electrode materials and efficient phenol hydrogenation.
JOURNAL OF CATALYSIS
(2024)
Article
Chemistry, Physical
Amir Shahzad, Khezina Rafiq, Muhammad Zeeshan Abid, Naseem Ahmad Khan, Syed Shoaib Ahmad Shah, Raed H. Althomali, Abdul Rauf, Ejaz Hussain
Summary: Photocatalytic hydrogen production through water splitting is an effective method for meeting future energy demands. In this study, researchers synthesized a 1 % Ag2S/Cu2S co-doped CdZnS catalyst and found that it can produce hydrogen at a higher rate. The co-doping of Ag2S and Cu2S in the CdZnS catalyst showed a synergistic effect, with Ag2S promoting oxidation reactions and Cu2S promoting reduction reactions.
JOURNAL OF CATALYSIS
(2024)
