Review
Chemistry, Physical
Mahnaz Najafi
Summary: Chiral and bi/multifunctional catalysts play important roles in sustainable organic transformations. Polyoxometalates (POMs) have great potential in asymmetric and one-pot tandem reactions due to their diverse structures, good redox properties, and oxidation abilities. However, the solubility of POM catalysts in many solvents limits their applications. To overcome this issue, researchers have proposed the combination of POMs with organic units to generate POM-based inorganic-organic hybrid materials with unique structural characteristics, serving as heterogeneous catalysts for asymmetric and one-pot tandem reactions.
Article
Chemistry, Multidisciplinary
Xiao-Yang Yu, Yanxin Lv, Xiaoyu Weng, Jiaqi Geng, Yanyan Yang, Hua Jin, Hao Cui, Bo Fu, Xiaoshu Qu, Hongfei Shi, Xueling Cao
Summary: Five new inorganic-organic hybrid compounds, based on Keggin-type polyoxometalates, have been synthesized and characterized. Their electrochemical behaviors, catalytic properties, organic dye removal capabilities, antibacterial/antifungal activities, and photoluminescence properties have been investigated.
Article
Chemistry, Inorganic & Nuclear
Zhongzhong Cao, Wen Yang, Xin Min, Jianhua Liu, Xiaohua Cao
Summary: Inorganic polyoxometalates (POMs) have shown promising potential as novel anti-tumor drug materials due to their remarkable bioactivity in anti-tumor and anti-virus applications. Efforts have been made to improve the solubility and anti-tumor activity of POMs by grafting organic functional groups onto their inorganic structure. These inorganic-organic hybrids have become a hot research topic worldwide.
INORGANIC CHEMISTRY COMMUNICATIONS
(2021)
Article
Polymer Science
Zhuo-Qun Lu, Lan-Lan Zhang, Yukun Yan, Wei Wang
Summary: Hybrid polyelectrolytes composed of polynorbornene backbone and pendant polyoxometalate (POM) groups were prepared with different degrees of polymerization, showing potential applications in electrochemistry, catalysis, and materials science. The exchange of tetrabutylammonium counterions associated with POM groups for protons and alkali-metal cations did not break the covalent bond between the POM cluster and the polymer chain, maintaining the structural integrity of the POM clusters. POM polyelectrolytes have promising prospects in various fields, including electrochromic and photochromic devices.
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.
Review
Biochemistry & Molecular Biology
Ruhollah Khajavian, Vida Jodaian, Fatemeh Taghipour, Joel T. Mague, Masoud Mirzaei
Summary: This review focuses on the role of organic fragments in the self-assembling process of POM-based architectures and discusses the relationship between the nature and structure of organic ligands and properties of lacunary Keggin-type POMs in RE and TM-RE heterometallic derivatives. The effects of organic fragments in mixed ligand hybrids are also briefly reviewed.
Article
Chemistry, Physical
Vladislav Gorbunov, Aleksey Buryak, Kirill Oskolok, Andrey G. Popov, Irina Tarkhanova
Summary: In this article, a series of effective catalysts based on betaine and sulfuric or phosphomolybdic acids were obtained. These compositions were characterized and tested in the oxidation of sulfur- and nitrogenous-containing compounds by H2O2. The acidity change is non-linearly influenced by the amount of heteropolyacid (HPA), and the removal of sulfur-containing compounds is correlated with the concentration of Bronsted acid sites on the catalyst surface. On the other hand, the removal of pyridine is primarily determined by the content of heteropolyacids in the catalyst.
Article
Chemistry, Multidisciplinary
Shun-Shun Qin, Ze-Kun Wang, Lei Hu, Xing-Hao Du, Zheng Wu, Maria Stromme, Qian-Feng Zhang, Chao Xu
Summary: Porous organic frameworks (POFs) with tunable structures have been widely studied in adsorption and catalysis. Introducing ionic structures into POFs enhances their functionalities for applications in metal scavenging and catalysis. This study reports a guanidinium-based ionic POF with excellent performance in palladium scavenging and heterogeneous catalysis.
Article
Chemistry, Multidisciplinary
Mana Abdirahman Mohamed, Stefanie Arnold, Oliver Janka, Antje Quade, Volker Presser, Guido Kickelbick
Summary: Inorganic-organic hybrid materials with redox-active components were synthesized by precipitating ammonium heptamolybdate (AHM) with para-phenylenediamine (PPD) in an aqueous reaction. The scalable microjet process was employed to produce submicrometer particles with high purity and reproducibility on a large scale. By varying the molybdate-to-organic ligand ratio and pH, two different crystalline hybrid products were obtained. The electrochemical behavior of the hybrid materials was tested, and one of them exhibited exceptional capacity for lithium-ion battery applications.
Review
Chemistry, Multidisciplinary
Lifei Lian, Huaiying Zhang, Sai An, Wei Chen, Yu-Fei Song
Summary: POMs, as a class of discrete anionic metal-oxygen clusters with tunable structure, exhibit super strong Bransted acidity, high proton mobility, and thermal stability, making them potential green alternatives to conventional homogeneous acid catalysts. Through design strategies such as functionalized cations, covalent interactions, non-precious metal support, and porous polymer framework, POMs-based heterogeneous catalysts have shown excellent catalytic performance in specific acid-catalyzed reactions.
SCIENCE CHINA-CHEMISTRY
(2021)
Article
Chemistry, Inorganic & Nuclear
Jingjing Zhi, Xueying Xu, Sijie Duan, Weilin Chen, Fengrui Li, Xiangwei Guo, Yinan Hou
Summary: The dependence of perovskite-based photovoltaic devices on toxic solvents limits their applications. Therefore, we added polyoxometalates into ionic liquids as green solvents to improve device performance. By delaying the crystallization process of perovskite thin films and enhancing electron transmission, the champion device achieved a photocurrent of 95.99 μA (about 2.7 times the original device) and maintained 80% of the initial value after 700 hours of environmental exposure.
EUROPEAN JOURNAL OF INORGANIC CHEMISTRY
(2023)
Article
Chemistry, Inorganic & Nuclear
Kalpana Chintakrinda, Nagaraju Narayanam, Guang-Hui Chen, Fei Wang, Jian Zhang, Lei Zhang
Summary: We report the discovery of inorganic toroidal and capsule titanium oxysulfate clusters through ionothermal synthesis. The ratio between geometrically different anions (tetrahedral SO(4)(2-) vs. pseudo-tetrahedral PO(3)(3-)) shows an interesting influence on the formation of cluster structure.
DALTON TRANSACTIONS
(2022)
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)
Article
Chemistry, Physical
Francisco de Azambuja, Jille Lenie, Tatjana N. Parac-Vogt
Summary: Inorganic clusters, specifically polyoxometalates (POMs), can serve as effective ligands for Hf(IV) Lewis acid metals in homogeneous metal catalysis. The interplay between the dielectric constant of the medium and the ligand structure is crucial for optimizing catalytic activity and promoting efficient amide bond formation. Changes in the dielectric constant can significantly impact the performance of the catalyst, highlighting the importance of understanding the relationship between medium properties and catalyst reactivity.
Article
Chemistry, Physical
Hanxiang Chen, Shuting Hou, Haoyuan Cui, Chao Wang, Ming Zhang, Hongping Li, Hui Xu, Jiqing Wu, Wenshuai Zhu
Summary: The interfacial properties and active site distribution of catalysts have a significant impact on catalytic oxidative desulfurization activity, which has been a research focus in recent years. In this study, an amphiphilic and polyoxometalate poly(ionic liquids) were prepared through cross-linking copolymerization and ion exchange reaction for desulfurization in fuel. The resulting sample, p-C2VIM-DVB-2-PMo, exhibited enhanced desulfurization performance and good thermal stability, meeting the requirements for deep desulfurization. Density functional theory calculations were also utilized to investigate the adsorption strength and interaction nature between the cation and sulfide compounds.
JOURNAL OF MOLECULAR LIQUIDS
(2023)
Article
Engineering, Chemical
Mingdong Sun, Zhengyun Bian, Weiwei Cui, Xiaolong Zhao, Shu Dong, Xuebin Ke, Yu Zhou, Jun Wang
Summary: Heteroatom-doped carbon materials have great potential in the electrochemical reduction reaction of CO2. This study reports a unique carbon precursor of soft template-containing porous poly(ionic liquid) that can be directly synthesized via free-radical self-polymerization. The carbonization process without any additive yields carbon materials with adjustable textural properties and N species. The integration of soft-template leads to the formation of hierarchical porous carbon material with a higher surface area and larger pore size. The champion catalyst exhibits high Faraday efficiency and current density in the CO2RR to CO reaction, which is attributed to the abundant graphite N species and hierarchical pore structure.
CHINESE JOURNAL OF CHEMICAL ENGINEERING
(2022)
Article
Chemistry, Multidisciplinary
Yufang Ma, Lei Wang, Lei Chen, Meikun Shen, Xue Yang, Tengteng Wang, Feixiang Yuan, Yu Zhou, Jun Wang, Hongjun Zhu
Summary: This study investigates the influence of heteroatom-substituted tetrahedral sites on the properties of zeolite crystals. By using specific organic structure-directing agents, it is found that boron can be controlled to be located at specific sites within the zeolite framework. This discovery provides a theoretical basis for the development of efficient zeolite catalysts.
Article
Chemistry, Multidisciplinary
Ke Liu, Zixuan Xu, He Huang, Yadong Zhang, Yan Liu, Zhiheng Qiu, Minman Tong, Zhouyang Long, Guojian Chen
Summary: Pyridinium-based ionic porous organic polymers (Py-iPOPs) were constructed from newly designed acetonitrile-functionalized ionic liquids and multi-carbaldehyde monomers by base-catalyzed Knoevenagel condensation. The obtained Py-iPOPs are regarded as efficient metal-free and halogen-free heterogeneous catalysts for atmospheric CO2 fixation under mild conditions.
Article
Chemistry, Physical
Zixuan Xu, Ke Liu, He Huang, Yadong Zhang, Zhouyang Long, Minman Tong, Guojian Chen
Summary: This work presents a facile strategy to fabricate a new class of viologen-linked ionic polyacetylenes (VIPAs) through catalyst-free and initiator-free polymerization. The highly cross-linked VIPAs show excellent catalytic activity for the conversion of CO2 with various epoxides into cyclic carbonates. The reaction temperature has a significant influence on the synthesis of VIPAs, achieving the transformation from soluble oligomers to insoluble polymers.
JOURNAL OF MATERIALS CHEMISTRY A
(2022)
Article
Chemistry, Multidisciplinary
Qizhi Hu, Shi Jiang, Yue Wu, Hongzhong Xu, Guoqing Li, Yu Zhou, Jun Wang
Summary: An efficient catalytic system using a low-cost non-noble-metal catalyst was developed for the conversion of 5-hydroxymethylfurfural (HMF) into N-containing compounds. A carbon-doped Ni catalyst supported on Al2O3 was obtained via pyrolysis-reduction, and it showed high selectivity and yield in the reductive amination of HMF. The catalyst could be recycled and applied to the synthesis of biomass-derived amines at ambient temperature.
Article
Engineering, Chemical
Jiaqiang Wang, Donglin Yang, Bingxiao Feng, Meng Xiao, Hengjun Gai, Tingting Huang, Yu Zhou, Hongbing Song
Summary: Considering the environmental issues caused by oily wastewater, researchers have paid extensive attention to the realization of oil-water separation. In this study, a series of hypercrosslinked poly(ionic liquid)s (HCPILs) were fabricated, which showed adjustable hydrophilicity and hydrophobicity. The designed materials selectively remove water or oil mixture, providing new ideas for solving future environmental problems such as offshore oil spills.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Chemistry, Physical
Tengteng Wang, Xue Yang, Yufang Ma, Lei Chen, Meikun Shen, Yongdan Chen, Guangliang Song, Lei Wang, Yu Zhou, Jun Wang, Hongjun Zhu
Summary: This study successfully fabricated high-quality titanium silicalite-1 (TS-1) and revealed the active center in TS-1 as well as the role of ketones and oximes through various analytical methods. This is of great importance for understanding the catalytic oxidation process.
MOLECULAR CATALYSIS
(2022)
Article
Chemistry, Physical
Tao Chen, Dongxin Pan, Jie Zhu, Menglin Xie, Ting Li, Yu Zhou, Jun Wang
Summary: In this study, a metal-/additive free carbon catalyst was designed from the hydrothermal treatment of biomass-derived sucrose for benzene hydroxylation to phenol. The champion carbon sample gave a high phenol yield of 13.4% and the catalyst could be easily recovered and reused.
MOLECULAR CATALYSIS
(2022)
Article
Chemistry, Physical
Zhe Chen, Mingxu Zou, Guoqing Li, Xiaoling Liu, Yu Zhou, Jun Wang
Summary: In this study, an effective non-noble metal catalyst was demonstrated for the solvent-free synthesis of aromatic aldehydes. The catalyst showed high yields, stable reusability, and wide substrate scope. The high performance of the catalyst was attributed to the abundant low valence Mo species derived from the strong cation-anion interaction.
MOLECULAR CATALYSIS
(2022)
Article
Engineering, Chemical
TingTing Wang, Biao Meng, Yang Zhou, Yuan Wang, Lei Wang, Lifeng Ding, Yu Zhou, Jun Wang
Summary: By confining organic cations of ILs into Cu-BTC, a high CO2 adsorption IL/MOF composite with improved CO2/N-2(CH4) selectivities was obtained.
Article
Polymer Science
He Huang, Chaoran Meng, Zixuan Xu, Shijie Wang, Yanan Chang, Shuo Wang, Juan Chen, Zhouyang Long, Guojian Chen
Summary: A facile method was reported to construct polyhedral oligomeric silsesquioxane (POSS) and phosphonium-based ionic porous hypercrosslinked polymers (P-iPHCPs) with multiple catalytic active sites. These polymers, with hierarchical micro/mesoporous structures and flower-like nano-morphology, serve as efficient heterogeneous catalysts for the conversion of carbon dioxide (CO2) to valuable cyclic carbonates. Particularly, polymer P-iPHCP-14 exhibits high efficiency in the synergistic catalytic conversion of CO2 with various epoxides to cyclic carbonates under mild conditions, and is recyclable.
JOURNAL OF POLYMER SCIENCE
(2023)
Article
Engineering, Environmental
Tao Chen, Fangpei Ma, Zhe Chen, Menglin Xie, Ting Li, Yu Zhou, Jun Wang
Summary: A facile microwave assisted strategy was reported for defect engineering of two-dimensional tungsten oxide, promoting the photochemical and O-2 activation behaviors. The catalyst achieved a high phenol yield with high selectivity under visible-light-driven conditions.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Multidisciplinary
Shiqi Huang, Xianglei Meng, Yanzhao Gao, Minmin Liu, Junjie Zhang, Yu Zhou, Yuting Song, Yanyan Diao
Summary: According to the requirements of sustainable green development, the efficient green synthesis of fluorine chemical products is an inevitable trend. In this study, ionic liquids were used as an effective catalyst in the dimerization reaction of hexafluoropropylene for the first time. The effects of different ionic liquids on the catalytic performance were systematically studied. The results showed that the most active catalyst was the trisubstituted thiocyanate imidazole ionic liquid [C(6)mmim][SCN], which had a high turnover frequency (TOF) of 108.36 h(-1) and a selectivity of 97.96%. Compared to traditional metal salt catalysts, the catalytic activity of ionic liquids was twice as high.
Article
Chemistry, Multidisciplinary
Qizhi Hu, Hongzhong Xu, Yue Wu, Shi Jiang, Jun Wang, Yu Zhou
Summary: In this study, we demonstrate that ionic polyamide stabilized Ru nanoparticles act as a highly effective catalyst for the reductive amination of carbonyl compounds, providing high yield, large turnover frequency, stable recycling performance, and compatibility with a wide range of primary amines. The ionic polyamide support allows for easy adjustment of the surface chemical state and dispersion, leading to the formation of metallic Ru-0 species with high dispersion and suitable hydrogenation ability. The presence of ionic moieties is crucial for stabilizing the Ru species and enabling stable recyclability.
MATERIALS CHEMISTRY FRONTIERS
(2023)
Review
Chemistry, Multidisciplinary
Guoqing Li, Shu Dong, Ping Fu, Qihong Yue, Yu Zhou, Jun Wang
Summary: This review summarizes the recent progress in the synthesis and post-synthesis of porous poly(ionic liquid)s (PILs) catalysts for carbon dioxide (CO2) cycloaddition. The synthesis methods and catalytic behaviors of porous PILs in CO2 cycloaddition are discussed. It is highlighted that the rational design of IL monomers and optimization of synthetic parameters are crucial for developing high-performance catalysts.
