Article
Polymer Science
Hiromitsu Sogawa, Jun Sawada, Hisashi Kokubo, Haruna Mizuno, Yumi Kobayashi, Masayoshi Watanabe, Toshikazu Takata
Summary: Rotaxane cross-linked polymers (RCPs) were prepared through radical copolymerization using ionic liquid monomer (ILm) and butyl acrylate, with the addition of a vinyl-based rotaxane crosslinker. Compared to network polymers prepared with conventional covalent crosslinkers, the developed RCPs showed superior mechanical properties. Additionally, a small amount of ILm toughened the formed RCPs and increased their toughness, while also achieving ionic conductivity of 10(-7) S cm(-1) at 25 degrees C.
Article
Chemistry, Physical
Mickael Henrion, Yorck Mohr, Kwinten Janssens, Simon Smolders, Aram L. Bugaev, Oleg A. Usoltsev, Elsje Alessandra Quadrelli, Florian M. Wisser, Dirk E. De Vos, Jerome Canivet
Summary: New catechol-based porous polymers were synthesized and used as platforms for the heterogenization of molecular Cu complexes. The resulting Cu@CatMP-1 materials proved to be highly stable and performing catalysts with turnover numbers up to 6000, about 1 to 2 orders of magnitude higher than the current relevant state of the art. The solid catalyst showed recyclability for over 10 runs without metal leaching and has been scaled to the gram scale. The coordination of Cu to catechol within the polymer has been confirmed by X-ray absorption spectroscopy.
Article
Biochemistry & Molecular Biology
Yohan Martinetto, Salome Basset, Bruce Pegot, Catherine Roch-Marchal, Franck Camerel, Jelena Jeftic, Betty Cottyn-Boitte, Emmanuel Magnier, Sebastien Floquet
Summary: This study focuses on the preparation and characterization of four new ionic liquids formed by different polyoxotungstates or polyoxomolybdates pairing with the cation trihexyltetradecylphosphonium. It was found that the physical properties, viscosity, and rheological behaviors of POM-based ionic liquids (POM-ILs) are heavily dependent on the nature of the POM, particularly its charge. Additionally, the study demonstrates the potential of using these materials as solvents and catalysts for alcohol oxidation, as well as a simple method for catalyst recycling.
Article
Chemistry, Physical
Kai Wang, Weiwei Cui, Zhengyun Bian, Yangqing Liu, Shi Jiang, Yu Zhou, Jun Wang
Summary: This study unexpectedly showed the high activity of heterogeneous Pd(0) nanoparticles in the intramolecular oxidative coupling reaction. The constructed Pd(0) NPs, with different average particle sizes, mimic an effective catalytic mechanism in the reaction.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2021)
Article
Chemistry, Multidisciplinary
Christopher M. Brown, David J. Lundberg, Jessica R. Lamb, Ilia Kevlishvili, Denise Kleinschmidt, Yasmeen S. Alfaraj, Heather J. Kulik, Maria Francesca Ottaviani, Nathan J. Oldenhuis, Jeremiah A. Johnson
Summary: This study introduces a modular heterogeneous catalysis platform that immobilizes catalysts onto supports to improve recyclability and efficiency. The approach utilizes self-assembled metal-organic cages/polyhedra to create well-defined catalyst-functionalized junctions, resulting in nanoconfined catalyst domains.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2022)
Article
Engineering, Chemical
Ekaterina A. Eseva, Maksim O. Lukashov, Kirill A. Cherednichenko, Ivan S. Levin, Argam Akopyan
Summary: The study focused on the synthesis and characterization of new efficient heterogeneous catalysts based on various immobilization methods, with the most effective method being the use of N-methylimidazole as a cation-forming agent.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2021)
Article
Chemistry, Multidisciplinary
Yuanyuan Shan, Chang Yu, Mengdi Zhang, Qianbing Wei, Jialong An, Huihui Lv, Lin Ni, Jieshan Qiu
Summary: A widely pH-stable and novel emulsifier was synthesized by passivating the pH-responsive sites on graphene oxide nanoribbon (GONR) surface using ionic liquid (IL). The emulsifier exhibited suitable wettability and stability in a wide pH range, and its stabilized emulsion microreactor showed remarkable catalytic activity in benzyl alcohol oxidation.
Review
Chemistry, Multidisciplinary
Ria Ayu Pramudita, Ken Motokura
Summary: This article presents the current development of utilizing hydrosilanes in the chemical reduction of CO2, with a focus on organic catalysts. The use of heterogeneous organocatalysts with precisely designed active sites is emphasized for their recyclability and higher efficiency in these transformations.
Article
Chemistry, Physical
Helapiyumi Weerathunga, Cheng Tang, Aidan J. Brock, Sarina Sarina, Tony Wang, Qiong Liu, Huai-Yong Zhu, Aijun Du, Eric R. Waclawik
Summary: Selective oxidation of alcohols is crucial for fine chemical production, and the photocatalytic oxidation of benzyl alcohol using ZnO nanocrystals was investigated in this study. Different shapes of ZnO nanocrystals displayed varying kinetics for the benzyl alcohol oxidation reaction, with nanocones showing the highest conversion rate. The {10 (1) over bar1} facet of ZnO was found to expose undercoordinated O atoms, leading to the highest adsorption of benzyl alcohol and ultimately resulting in 100% selectivity for benzaldehyde as the product.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Nanoscience & Nanotechnology
Ziyi Su, Chenghan Yang, Qinghua Deng, Yuming Zhou, Chunfeng Mao, Zhiwei Fu, Chenzi Zhu, Yiwei Zhang
Summary: A novel noble metal catalyst based on polymer ionic liquids with a core-shell structure was synthesized for the selective oxidation of benzyl alcohol. The PILM/Au/Al(OH)3 catalyst was prepared by in situ adsorption of Au nanoparticles on the surface of polymer ionic liquid microspheres (PILMs) and the addition of Al(OH)3 to prevent aggregation. The catalyst exhibited good effectiveness and reusability after five cycles of experiments, and a potential catalytic mechanism for the oxidation of benzyl alcohol was proposed.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Polymer Science
Dongyuan Wei, Fei Wang, Hanxue Sun, Zhaoqi Zhu, Weidong Liang, An Li
Summary: The study presents a method for synthesizing efficient solar steam generators using photothermal materials, with the CHCP-MINs showing high energy conversion efficiency and mechanical flexibility, making them suitable for various applications such as power generation, seawater desalination, and wastewater treatment.
EUROPEAN POLYMER JOURNAL
(2021)
Article
Polymer Science
Tian-Xiong Wang, Xuesong Ding, Bao-Hang Han
Summary: This study presents the synthesis of hypercrosslinked polymer (TA-HCP) using tannic acid (TA) and its catalytic performance in thioether oxidation reaction. The results demonstrate that TA-HCP-VO exhibits excellent catalytic activity and stability in thioether oxidation reaction, with high conversion rates and selectivities.
Review
Chemistry, Multidisciplinary
Anna Wolny, Anna Chrobok
Summary: This research focused on supported ionic liquid phases as efficient enzyme stabilization carriers and their applications in various biocatalytic processes.
Article
Polymer Science
Tianlin Wang, Chuanchao Shen, Guangren Yu, Xiaochun Chen
Summary: A polymer ionic liquid containing [NTf2](-) was synthesized and used to immobilize metal ions for catalyzing glycolysis of PET, showing high catalytic performance and easy recovery. The interaction energy of the polymer ionic liquid-metal ion complex was higher than that of ethylene glycol-metal ion complex, and the catalyst showed good reusability in promoting the glycolysis of PET.
POLYMER DEGRADATION AND STABILITY
(2021)
Article
Chemistry, Inorganic & Nuclear
Qun Chen, Cheng-Yang Jiao, Hu Xu, Si-Man Li, Jian-Bo Yang, Hua Mei, Yan Xu
Summary: In this study, a copper-modified isolated dimeric hybrid nanocluster was synthesized for efficient and clean photocatalytic one-step oxidation to phenol. The modified cluster not only solves some problems in the traditional phenol production process but also introduces copper atoms as a second active center, improving the catalytic performance.
DALTON TRANSACTIONS
(2023)
