Article
Chemistry, Inorganic & Nuclear
Wuying Zhang, Qian He, Yaju Chen, Rongchang Luo, Xiantai Zhou, Hongbing Ji
Summary: Quaternary phosphine type hypercrosslinked polymer catalysts were prepared using Friedel-Crafts alkylation reactions, benefitting from the synergistic effects between the Bronsted acidity of the hydroxyl group, nucleophilicity of the Br- group, and CO2 capture of the ionic liquids. The metal-free catalysts obtained facilitate cycloaddition reactions and the synthesis of high value-added fine chemicals.
DALTON TRANSACTIONS
(2022)
Article
Chemistry, Physical
Giulia Tuci, Andree Iemhoff, Andrea Rossin, Dmitry Yakhvarov, Marco Filippo Gatto, Rafael Balderas-Xicohtencatl, Linda Zhang, Michael Hirscher, Regina Palkovits, Cuong Pham-Huu, Giuliano Giambastiani
Summary: The development of functional porous samples for gas adsorption is a significant challenge in modern materials chemistry, particularly in addressing global warming and renewable energy storage solutions. In this study, a series of Covalent Triazine Frameworks (CTFs) with high specific surface area and nitrogen content were prepared and investigated for their gas uptake properties. Among the CTFs examined, CTF-pDCB/DCIHT(4) exhibited ideal morphological and chemical features for CO2 and H2 adsorption, outperforming other materials in terms of adsorption capacity.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Polymer Science
Tzu-Ling Yang, Jhu-You Chen, Shiao-Wei Kuo, Chen-Tsyr Lo, Ahmed F. M. El-Mahdy
Summary: In this research, two novel hydroxy-functionalized COFs were synthesized through Schiff-base polycondensations. These COFs exhibited high surface areas and excellent stability, making them suitable electrode materials for supercapacitor applications.
Article
Materials Science, Multidisciplinary
Na Yang, Lan Yang, Xiang Zhu, Peiqing Zhao, Honglai Liu, Chungu Xia, Sheng Dai, Chengcheng Tian
Summary: Highly crystalline covalent triazine frameworks (CTFs) were synthesized for the first time using a solvent-and catalyst-free approach. The CTFs were then transformed into isolated single-atom catalysts (SACs) through a new condensation reaction. These SACs exhibited efficient performance in electrochemical carbon dioxide reduction.
ACS MATERIALS LETTERS
(2022)
Article
Chemistry, Inorganic & Nuclear
Lianlian Wang, Wanzhen Qiao, Han Liu, Shuwen Li, Jie Wu, Hongwei Hou
Summary: The incorporation of Lewis acid-base sites in catalysts has been considered as a significant approach to fabricating bifunctional catalysts with efficient catalytic activity for CO2 fixation. In this paper, a series of Hafnium-based metal-organic frameworks (Hf-MOFs), NU-912(Hf)-I, has been successfully synthesized and demonstrated to be an efficient heterogeneous catalyst for CO2 cycloaddition reaction.
INORGANIC CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
James N. Burrow, Ryan A. Ciufo, Lettie A. Smith, Yu Wang, David C. Calabro, Graeme Henkelman, C. Buddie Mullins
Summary: Ca2+ acts as a structure-directing agent to transform melon-based carbon nitride to crystalline CaPHI with ordered pore channels, extended visible light absorption, and altered band structure as compared to KPHI. Protons can replace Ca2+ atoms in CaPHI to enhance porosity without disrupting crystal structure. The proton-exchanged PHI frameworks exhibit high adsorption affinity for CO2 and exceptional performance for selective carbon capture.
Article
Chemistry, Multidisciplinary
Junhua Wang, Xin Lian, Zhiyuan Zhang, Xiongli Liu, Qiao Zhao, Jian Xu, Xichuan Cao, Baiyan Li, Xian-He Bu
Summary: A highly stable thiazole functionalized covalent triazine framework, CTF-BT-500, has been developed for C2H6/C2H4 separation, exhibiting the highest ethane uptake among all reported COFs. This work not only presents an excellent C2H6-selective adsorbent, but also provides guidance for the construction of robust adsorbents for value-added gas purification.
CHEMICAL COMMUNICATIONS
(2023)
Article
Chemistry, Multidisciplinary
Yu-Lan Zhu, Ping Guo, Yu-Ping Yang, Xiao-Yan Ran, Cheng Liu, Bang-Jin Wang, Jun-Hui Zhang, Sheng-Ming Xie, Li-Ming Yuan
Summary: A novel chiral core-shell composite CCTF@SiO2 was synthesized and used for HPLC enantioseparation, exhibiting high separation performance and stability.
NEW JOURNAL OF CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Ruixue Sun, Xiaoyan Wang, Xuepeng Wang, Bien Tan
Summary: This research reports the design and synthesis of two 3D crystalline CTFs with moderate crystallinity, relatively large surface area, and high CO2 uptake capacity. These 3D CTFs exhibit ultrastability and provide a synthetic strategy and structural basis for expanding practical applications of CTF materials.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Chemistry, Multidisciplinary
Acquah Ebenezer Kojo, Wansu Cho, Chiyoung Park
Summary: Two microporous and amorphous covalent triazine-based frameworks (CTFs) were synthesized using phenanthrene and anthracene as monomers, and further functionalized to CTF derivatives (CTF-OXs) with excellent adsorption capacities for aqueous organic micropollutants.
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
(2022)
Article
Energy & Fuels
H. Shanavaz, B. P. Prasanna, S. Archana, M. K. Prashanth, Fahad A. Alharthi, Rui Zhou, M. S. Raghu, Byong-Hun Jeon, K. Yogesh
Summary: Covalent organic frameworks (COFs) are important materials in energy storage systems due to their uniform porosity and versatile functionality. This study focuses on the fabrication and characterization of a triazine-based COF and its decoration with Niobium to form Nb@COF. The results show successful doping of Nb into the COF and improved electrochemical performance in Nb@COF. The stability, specific capacitance, and reliability of Nb@COF indicate its potential application in energy storage devices.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Chemistry, Multidisciplinary
Siquan Zhang, Loris Lombardo, Masahiko Tsujimoto, Zeyu Fan, Ellan K. Berdichevsky, Yong-Sheng Wei, Kotoha Kageyama, Yusuke Nishiyama, Satoshi Horike
Summary: In this study, a environmentally friendly method for synthesizing crystalline COFs from CO2 molecules as a precursor was proposed. The COFs showed high stability and a large surface area, and remained stable under strong acid, base, and high temperature conditions. The hydrophobicity and proton conductivity of the COFs could be modulated through post-modification.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Environmental Sciences
Shiwen Dong, Xuan Liu, Xianxian Kong, Feilong Dong, Yan Yu, Lizhang Wang, Da Wang, Zhiqiao He, Shuang Song
Summary: Metal-organic frameworks (MOFs) and covalent organic frameworks (COFs) have been proven to be efficient catalysts for photocatalytic hydrogen evolution due to their tunable functionalities, permanent porosity, excellent visible light response, and physicochemical stability. In this study, a series of photocatalysts (NUBC) were prepared by loading different amounts of Zr-UiO-66-NH2 onto a benzoic acid-modified covalent triazine-based framework (BC). The resulting NUBC catalysts exhibited a type-II Z-scheme heterojunction structure formed via amide covalent bonds between NU and BC. The optimal loading of NU on BC was 30 wt.% (30NUBC), which showed a significantly higher photocatalytic H-2 evolution rate compared to NU and BC alone. The synergistic effect between the type-II Z-scheme heterojunctions and amide bonds contributed to enhanced visible light harvesting and improved charge transportation and separation. Furthermore, the NUBC catalysts showed excellent reusability and stability. Overall, this work provides insights into the design of novel MOF/COF hybrid materials and offers a systematic exploration of their photocatalytic H2 evolution properties.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Chemistry, Inorganic & Nuclear
Luo-Gang Ding, Bing-Jian Yao, Wen-Xiu Wu, Zhi-Gao Yu, Xiao-Yu Wang, Jing-Lan Kan, Yu-Bin Dong
Summary: A porphyrin and imidazolium-ionic liquid-decorated quinoline-linked covalent organic framework (COF-P1-1) was synthesized via a three-component one-pot Povarov reaction, followed by post-synthetic metallization to form a chemically stable and highly selective CO2 adsorbing metallized COF-P1-2 with good visible-light-induced photothermal conversion ability. The presence of Co(II)-porphyrin and imidazolium-IL within COF-P1-2 ensures highly efficient activity for CO2 cycloaddition, with thermal energy derived from visible-light irradiation. This research offers a novel approach for eco-friendly and energy-saving COF-based greenhouse gas disposal.
INORGANIC CHEMISTRY
(2021)
Article
Chemistry, Multidisciplinary
Renata Avena Maia, Felipe Lopes Oliveira, Vincent Ritleng, Qiang Wang, Benoit Louis, Pierre Mothe Esteves
Summary: The study on the CO2 capture properties of COFs revealed that their adsorption capacity is influenced by the material's texture and chemical properties, with the relative number of hydroxyl groups in the COF backbone acting as an adsorption threshold. This research provides insights into the potential applications of COFs in CO2 capture.
CHEMISTRY-A EUROPEAN JOURNAL
(2021)
Article
Chemistry, Applied
Lulu Wan, Gan Ye, Yuying Chang, Zhaohan Yang, Guangming Shi, Qiuli Zhang, Jin Wang
Summary: This study developed an efficient approach to upgrade the oxidative desulfurization (ODS) performance of Zr-MOFs with proton stimulation. Experimental results showed that the introduction of protons can significantly improve the ODS efficiency. This work provides a facile and efficient strategy for enhancing the ODS performance of pristine MOFs.
MICROPOROUS AND MESOPOROUS MATERIALS
(2024)
Article
Chemistry, Applied
Qiqi Lu, Xiu-Zhi Wei, Qi Zhang, Xinghua Zhang, Lungang Chen, Jianguo Liu, Yubao Chen, Longlong Ma
Summary: The application of Pd-M bimetallic clusters in the selective hydrogenation reaction was investigated, and the Pd0.6Ni@S-1 catalyst was found to exhibit high selectivity in the conversion of phenylacetylene to styrene. The confinement effect of zeolite inhibited over-hydrogenation and improved the stability of the catalysts. Furthermore, the solvent properties also influenced the product distribution.
MICROPOROUS AND MESOPOROUS MATERIALS
(2024)
Review
Chemistry, Applied
Bo Li, Lumin Hong, Changdi Jing, Xianyang Yue, Huabo Huang, Qianqian Jiang, Jianguo Tang
Summary: MOF materials with adjustable pore structure and polymetallic sites have been explored as electrocatalysts for OER. Bimetallic materials show higher electrocatalytic activity than monometallic materials, while carbon-coated and doped MOF catalysts exhibit stable and good OER activity. The synergistic interaction between polymetallic active sites effectively improves the intrinsic activity of MOF on OER.
MICROPOROUS AND MESOPOROUS MATERIALS
(2024)
Article
Chemistry, Applied
Shichun Gu, Ruyi Wang, Junxiong Zhang, Hairong Dong, Liping Deng, Xue Wang, Yapeng He
Summary: In this study, monodispersed hollow mesoporous organosilica nanospheres with controlled core cavity and mesoporous shell were successfully synthesized. These hollow nanospheres showed a high adsorption capacity for Pb2+ in water solution and exhibited acceptable recycling and stability.
MICROPOROUS AND MESOPOROUS MATERIALS
(2024)
Article
Chemistry, Applied
Lucie Havelkova, Bogdana Bashta, Michaela Vankova, Jiri Zednik, Jiri Brus, Jan Svoboda, Alice Vagenknechtova, Jan Sedlacek
Summary: An atom-economic one-step chain-growth coordination homopolymerization providing high yields of functionalized hyper-cross-linked polyacetylenes with a permanent micro/mesoporous texture and a BET area of up to 1062 m2/g is reported. The homopolymerization is highly compatible with the heteroatom groups of the monomers and allows the preparation of well-defined porous networks with a wide spectrum of univalent groups.
MICROPOROUS AND MESOPOROUS MATERIALS
(2024)
Article
Chemistry, Applied
Shirui Pang, Yuxin Liu, Zhe Zhang, Yuxin Li, Chunguang Li, Zhan Shi, Shouhua Feng
Summary: This study focuses on using a functional separator to suppress the shuttle effect of soluble lithium polysulfides in Li-S batteries. It is found that the functionalized sulfonic acid group not only accelerates the conduction of lithium ions, but also repels polysulfide anions through electrostatic interactions. The performance of the batteries is significantly improved with the use of this functionalized separator.
MICROPOROUS AND MESOPOROUS MATERIALS
(2024)
Article
Chemistry, Applied
Pingping Li, Lei Han, Donghun Kim, Kemal Celebi
Summary: This study presents a fast synthetic strategy for the preparation of high-quality platelike MFI crystals using a thin-wall tubular reactor. The strategy is efficient, time-saving, and can be optimized, making it applicable to the preparation and optimization of other important materials.
MICROPOROUS AND MESOPOROUS MATERIALS
(2024)
Article
Chemistry, Applied
Haitao Yin, Wei Wang, Yuxin Li, Hu Wen, Shuang Chen, Nanzhe Jiang
Summary: This study presents a template-free and solid-state-like crystallisation method for the synthesis of ZSM-5 zeolite, which can be scaled-up in production. Mechanical mixing of starting material components improves the dispersion of materials, leading to ZSM-5 zeolite with high crystallinity and size uniformity.
MICROPOROUS AND MESOPOROUS MATERIALS
(2024)
Article
Chemistry, Applied
Congli Li, Jiang Wang, Zhenfei Wang, Jinxiang Dong, Qi Shi
Summary: This study investigates the evolution and autoreduction behavior of Cu species in CuCl/NaY adsorbent during vacuum thermal activation. It is found that Cu species migrate from supercages to the nearby plane of the six-membered ring connecting the supercage and sod cage during vacuum activation. At 150 degrees C, vacuum autoreduction occurs, resulting in the formation of Cu+Cl- species. The results provide reference for the preparation of pi-complex adsorbents.
MICROPOROUS AND MESOPOROUS MATERIALS
(2024)
Article
Chemistry, Applied
Irena Khatrin, Iman Abdullah, Alan J. Mccue, Yuni K. Krisnandi
Summary: Hierarchical porous system with two types of mesopores provides a solution to the diffusion limitation in conventional zeolites. Cobalt oxide impregnated hierarchical ZSM-5 zeolite samples with intra- and inter-crystalline mesopores were synthesized using two different strategies. The physicochemical properties of the modified catalysts were analyzed, revealing distinct features given by the two mesoporous configurations. Catalytic activity analysis showed that Co-oxide/ZSM-5 with inter-crystalline mesopores exhibited higher activity in methane partial oxidation reaction compared to Co-oxide/ZSM-5 with intra-crystalline mesopores.
MICROPOROUS AND MESOPOROUS MATERIALS
(2024)
Article
Chemistry, Applied
Nataliia Reinders, Martin Durovic, Pavla Honcova, Zaneta Dohnalova, Jana Luxova, Stanislav Slang, Jhonatan Rodriguez-Pereira, Petra S. Sulcova
Summary: This study presents a new method for preparing a microporous Ni2P/C catalyst with high catalytic activity. The redox reaction and carbon matrix formation during high-temperature treatment contribute to the stability and activity of the catalyst. Experimental and analytical results suggest that the microporous structure of the composite plays a crucial role in its catalytic performance. These findings are important for practical applications of efficient hydrogen production by water electrolysis.
MICROPOROUS AND MESOPOROUS MATERIALS
(2024)
Article
Chemistry, Applied
Ana Raquel Bertao, Viktoriya Ivasiv, Cristina Almeida-Aguiar, Patricia R. Correia, Antonio M. Fonseca, Manuel Banobre-Lopez, Fatima Baltazar, Isabel C. Neves
Summary: This study developed a zeolite-based delivery system (ZDS) using silver and 5-Fluorouracil as antimicrobial and antineoplastic agents. The ZDS was characterized and its antimicrobial properties were investigated, showing better antibacterial effectiveness for the ZDS containing both silver and 5-FU.
MICROPOROUS AND MESOPOROUS MATERIALS
(2024)
Article
Chemistry, Applied
Naonobu Katada, Nobuki Ozawa, Etsushi Tsuji, Keigo Kanehara, Akiho Otsuka, Taiga Sakamoto, Kirari Umezawa, Hitoshi Matsubara, Satoshi Suganuma, Momoji Kubo
Summary: First principles calculations were used to investigate the pathway for methylation of benzene with methane catalyzed by MFI type zeolite-supported Co species. The strong adsorption of benzene on Co is found to lower the activation energy for methane dissociation and promote the formation of toluene precursor. The activation energy of methane dissociation is also affected by the Al-Al distance.
MICROPOROUS AND MESOPOROUS MATERIALS
(2024)
Article
Chemistry, Applied
Yuan Liu, An T. Ta, Kyoung Chul Park, Shenyang Hu, Natalia B. Shustova, Simon R. Phillpot
Summary: We use density functional theory to investigate the interactions of cerium, americium, and curium cations with crown ethers. Our results demonstrate that crown ethers can capture cerium, americium, and curium ions, and modifying the crown ether structure by substituting nitrogen atoms for oxygen atoms significantly increases their binding energies with radionuclides.
MICROPOROUS AND MESOPOROUS MATERIALS
(2024)
Article
Chemistry, Applied
Zhengwu Peng, Shixing Wang, Yihui Wu, Xiang Liu, Hongliang Liu, Dekun Zhang, Likang Fu
Summary: An efficient adsorbent for recovery of germanium was prepared and characterized in this study. The adsorption behavior of Ge(IV) on the adsorbent was analyzed, and the results showed that it follows pseudo-secondary kinetic model and Langmuir isotherm model. The adsorbent exhibited good anionic anti-interference ability and can still maintain high adsorption efficiency after repeated adsorption.
MICROPOROUS AND MESOPOROUS MATERIALS
(2024)