Article
Chemistry, Multidisciplinary
Jaewoong Lim, Seonghwan Lee, Hyeonbin Ha, Junmo Seong, Seok Jeong, Min Kim, Seung Bin Baek, Myoung Soo Lah
Summary: This study reports for the first time the covalent post-synthetic modification of amine-tagged defective Ni-MOF-74, resulting in a highly efficient Pd-II-incorporated Ni-MOF-74 catalyst for the Suzuki-Miyaura cross-coupling reaction. This strategy is also applicable to the covalent modification of amine-tagged defective Ni-2(DOBPDC), an expanded analogue of MOF-74.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Chemistry, Physical
Baiwei Ma, Fujia Hu, Xin Yang, Yongyu Huang, Xiubei Yang, Huijie Qiao, Zhuo Wang, Dehong Yang, Wenying Ai, Liwei Mi
Summary: Recently, crystalline covalent organic frameworks (COFs) have shown excellent performance in photocatalytic conversions due to their great photoelectric properties. Two new conjugated pyrene-based COFs, named PyDF-COF and PyBMT-COF, were successfully synthesized via condensation polymerization. These COFs exhibit highly selective aerobic hydroxylation of arylboronic acids with high yields and wide substrate universality. PyBMT-COF demonstrates a more efficient ability for this aerobic hydroxylation compared to PyDF-COF, which can be attributed to the electron-donating thiomethyl groups, resulting in enhanced distribution of the electron cloud and improved photoelectrochemical properties.
APPLIED CATALYSIS A-GENERAL
(2023)
Article
Chemistry, Physical
Alberto Lopez-Magano, Borja Ortin-Rubio, Inhar Imaz, Daniel Maspoch, Jose Aleman, Ruben Mas-Balleste
Summary: The functionalization of an imine-based layered covalent organic framework has allowed the obtention of a heterobimetallated material with photoactive Ir and Ni fragments immobilized within the porous structure. These heterogeneous light-mediated reactions showed enhanced activity and stability compared to analogous homogeneous systems.
Article
Materials Science, Multidisciplinary
Ze Li, Mengyu Di, Yantao Zhang, Boying Zhang, Zhenni Zhang, Zhiwei Zhang, Aijun Li, Shanlin Qiao
Summary: Catalytic oxidation of styrene to benzaldehyde, an important process in industry and academia, often faces challenges in achieving high yield. In this study, a covalent triazine framework (CTF) loaded with Pd clusters was used as a catalyst for the oxidation reaction, resulting in a high product yield of 95%. The heteropore structure of the CTF anchored more exposed active sites, leading to excellent catalytic performance with high stability. The coordination of pyridine nitrogen atoms in the catalyst framework with Pd clusters improved chemical stability, while well-provided transport channels accelerated mass transfer between reactants and products.
ACS APPLIED POLYMER MATERIALS
(2022)
Article
Chemistry, Physical
Tong Qin, Bowei Wang, Xiangdi Zhang, Shanglong Yang, Ligong Chen, Yang Li, Guoyi Bai, Xilong Yan
Summary: In this study, COF Tp-Azo and Cu-Tp-Azo were synthesized and their photocatalytic performances in the degradation of tetracycline were investigated. The results showed that Cu-Tp-Azo exhibited better degradation efficiency compared to Tp-Azo, indicating that the modification of copper ions can improve the photocatalytic activity of COFs.
Review
Chemistry, Multidisciplinary
Andree Iemhoff, Maurice Vennewald, Regina Palkovits
Summary: Heterogeneous single-site and single-atom catalysts are promising for combining the advantages of molecular catalysts and solid catalysts. Covalent triazine frameworks (CTFs) have been studied as support materials for coordinating and stabilizing metal species, serving as model systems for understanding the interactions between different metal species and the supports.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Multidisciplinary
Qiaobo Liao, Can Ke, Xin Huang, Dongni Wang, Qingwen Han, Yifan Zhang, Yiying Zhang, Kai Xi
Summary: Post-synthetic modification (PSM) is an effective strategy to introduce desired functionalities into COFs while maintaining their crystallinity and porosity. The use of Suzuki-Miyaura cross-coupling allows for efficient installation of various functionalities into COFs, expanding the scope of their structural design for different properties and applications. This versatile approach opens up new possibilities for the synthesis of functional COFs.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Chemistry, Physical
Francisco de Azambuja, Alexandra Loosen, Dragan Conic, Maxime van den Besselaar, Jeremy N. Harvey, Tatjana N. Parac-Vogt
Summary: The study explores the catalytic activity of Zr-6-based metal-organic frameworks in peptide bond formation, showing good stability and recyclability in dipeptide cyclization reactions without the need for additional activators. The results indicate that the catalyst can be applied to substrates with bulky and Lewis basic groups, and the reaction is driven by a mechanism involving Lewis acid activation of carboxylate groups towards amine addition.
Article
Chemistry, Applied
Xudong Qin, Weiting Yang, Weikang Yang, Yu Ma, Meiling Li, Chen Chen, Qinhe Pan
Summary: The study presents the synthesis of ZIF-90-ABOA with excellent uranium adsorption performance, demonstrating the potential enrichment of uranium from seawater and providing possibilities for nuclear energy development.
MICROPOROUS AND MESOPOROUS MATERIALS
(2021)
Article
Chemistry, Physical
Yusuke Kita, Midori Kuwabara, Keigo Kamata, Michikazu Hara
Summary: Alcohol transformations through the borrowing hydrogen methodology using nonprecious metal heterogeneous catalysts have shown promising applications. In this study, supported Mn catalysts (Mn-MgO/Al2O3) were used as reusable heterogeneous catalysts for the construction of C-C bonds by the alpha-alkylation of ketones with alcohols. The catalyst exhibited high catalytic performance and did not require the addition of homogeneous strong bases, reducing energy consumption and waste treatment.
Article
Chemistry, Multidisciplinary
Shaofeng Huang, Ji Yong Choi, Qiucheng Xu, Yinghua Jin, Jihye Park, Wei Zhang
Summary: Two covalent organic frameworks, MC-COF-1 and MC-COF-2, consisting of carbazolylene-ethynylene shape-persistent macrocycles with azine or imine linkages, were synthesized via imine condensation. The 2D frameworks are fully conjugated, imparting semiconducting properties, and exhibit high porosity with aligned porous channels. The frameworks can be doped with I-2 to enable electrical conductivity and have switchable electrical properties between conducting and insulating states.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Review
Chemistry, Physical
Arputham Shophia Lawrence, Nuria Martin, Balasubramanian Sivakumar, Francisco G. Cirujano, Amarajothi Dhakshinamoorthy
Summary: Among cross coupling reactions, C-C cross coupling reaction has attracted much attention and progress in the past four decades. Pd, one of the transition metals, has shown the highest activity due to its unique features and reactivity. However, due to the high cost and self-deactivation of Pd-based homogeneous catalysts, researchers have turned their focus towards the development of Pd-based heterogeneous catalysts. Metal organic frameworks (MOFs) have been frequently used as host matrix for the deposition of Pd(II) salts and Pd nanoparticles. This review provides a design and development of Pd-based MOFs as heterogeneous catalysts for C-C cross coupling reactions.
Review
Chemistry, Physical
Zhe Wang, Qian Luo, Shanjun Mao, Chunpeng Wang, Jinqi Xiong, Zhirong Chen, Yong Wang
Summary: This review highlights the significance of alkyne semi-hydrogenation in modern industry and the efforts to regulate catalyst structure to suppress side reactions. It also provides an updated perspective on the fabrication of next-generation catalysts for alkyne semi-hydrogenation.
Article
Chemistry, Inorganic & Nuclear
Macguire R. Bryant, Trent Cunynghame, Sally O. Hunter, Shane G. Telfer, Christopher Richardson
Summary: The study reports a three-step sequence starting from an alkenyl group on the biphenyl backbone of an IRMOF-9 analogue, leading to a framework functionalized with an aziridine ring. The reaction efficiency of each step is high, suppressing the formation of undesired functional groups. The failure of attempts via a direct synthetic method using functionalized biphenyldicarboxylate ligands demonstrates the utility of postsynthetic methods for preparing new materials.
INORGANIC CHEMISTRY
(2021)
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, Multidisciplinary
Zihan Ma, Lishuang Wang, Tingting Chen, Guangning Wang
Summary: In this study, two kinds of 3D self-doped (N/O) lilac-based and coriander-based porous carbons with high performance have been prepared.
NEW JOURNAL OF CHEMISTRY
(2024)
Article
Chemistry, Multidisciplinary
Qin Wang, Yun-Fan Yan, Jiao-Lin Weng, Ying Huang, Fu Yang, Hao-Hui Xie, Fei Tan, Fa-Kun Zheng, Jian-Gang Xu
Summary: Balancing energy and mechanical sensitivities is a challenging issue in the field of energetic materials. This study constructed a 3D energetic metal-organic framework with nitrogen-rich ligand and NO3- anions. The framework demonstrated high stability, energy density, and excellent mechanical sensitivities, making it a potential insensitive energetic material.
NEW JOURNAL OF CHEMISTRY
(2024)
Article
Chemistry, Multidisciplinary
Marrium Saeed, Urooj Kamran, Amina Khan, Md Irfanul Haque Siddiqui, Hasan Jamal, Haq Nawaz Bhatti
Summary: In this study, magnesium-aluminum layered double hydroxides (Mg-Al-LDH) were synthesized using an environmentally friendly hydrothermal technique for adsorbing the dye reactive green 5 (RG5). To improve the adsorption capability, composites were prepared by combining Mg-Al-LDH with low-cost Mangifera indica stone biomass (MISB). The results showed that the composites had high adsorption capacities for RG5 dye and could be regenerated.
NEW JOURNAL OF CHEMISTRY
(2024)
Article
Chemistry, Multidisciplinary
Xuanlin Zhan, Xiaojie Li, Yunyan Zeng, Siyan Jiang, Chao Pan, Shiyu Pan, Jiaquan Huang, Heqian Zhang, Zhiwei Qin
Summary: This study reports on the potential prospects of natural products derived from the rhizosphere for the development of antibiotics and herbicides, as well as the advancements in cultivating a mutant strain that produces a substantial quantity of lydicamycins, a potent family for herbicide development.
NEW JOURNAL OF CHEMISTRY
(2024)
Article
Chemistry, Multidisciplinary
Jie Zhu, Jiangtao Yu, Linhua Zhu, Xiaoxiao Yu, Jixing Liu, Yanhong Chao, Jingzhou Yin, Peiwen Wu, Jian Liu, Wenshuai Zhu
Summary: This study successfully demonstrates the 3D printing of attapulgite monoliths and investigates the influence of thermal treatment on their properties. The thermal treated monoliths show superior catalytic performance at low temperatures.
NEW JOURNAL OF CHEMISTRY
(2024)
Article
Chemistry, Multidisciplinary
Yanzhu Ye, Yixiang Ye, Jiannan Cai, Zhongshui Li, Shen Lin
Summary: In this paper, a novel Pt/CoP/C photo-electro synergistic catalyst was successfully synthesized and its performance was investigated. The catalyst exhibited excellent photo-electro catalytic performance, with significantly higher hydrogen production compared to a commercial catalyst. The introduction of cobalt phosphide and the existence of Co3O4 were identified as key factors for enhancing the catalytic activity.
NEW JOURNAL OF CHEMISTRY
(2024)
Article
Chemistry, Multidisciplinary
Nurul Hidayah Abu Bakar, Wan Norfazilah Wan Ismail, Hartina Mohd Yusop, Noreen Farzuhana Mohd Zulkifli
Summary: Hydrophobic coatings inspired by the lotus effect have gained popularity for their ability to solve various problems. The sol-gel method, utilizing silica, alumina, and titania, is explored as an environmentally friendly approach to produce water-based hydrophobic coatings. This study focuses on producing water-based hydrophobic coatings for cotton and polyester fabrics using a one-step sol-gel method. The coated fabrics exhibited improved hydrophobic properties, altered surface morphologies, and lower air permeability compared to uncoated fabrics. TEOS-PDMS coating provides a promising approach for enhancing the hydrophobic and surface properties of cotton and polyester fabrics.
NEW JOURNAL OF CHEMISTRY
(2024)
Article
Chemistry, Multidisciplinary
Nikita Belko, Hanna Maltanava, Anatol Lugovski, Polina Shabunya, Sviatlana Fatykhava, Evgeny Bondarenko, Pavel Chulkin, Sergey Poznyak, Michael Samtsov
Summary: This study investigates the difference in electrochemical behavior between rhodamine B hydrazide and rhodamine B acylhydrazone, and finds that rhodamine B acylhydrazone exhibits higher reversibility in electrooxidation. These results can be applied for developing new sensors with desired electrochemical properties.
NEW JOURNAL OF CHEMISTRY
(2024)
Article
Chemistry, Multidisciplinary
Showket Ahmad Bhat, Mohd Ikram
Summary: In this study, 0-3 particulate multiferroic composites were synthesized and characterized. The composites exhibited excellent ferroelectric and ferromagnetic properties, as well as high piezoelectric strain and magnetoelectric coupling effects.
NEW JOURNAL OF CHEMISTRY
(2024)
Article
Chemistry, Multidisciplinary
Carla Gomes, Mariana Costa, Susana M. M. Lopes, Bernardo Albuquerque Nogueira, Rui Fausto, Jose A. Paixao, Teresa M. V. D. e Melo, Luisa M. D. R. S. Martins, Marta Pineiro
Summary: The development of sustainable processes requires the integration of green chemistry principles. In this study, a solvent-free synthesis method was developed to prepare new copper catalysts, which efficiently catalyze cycloaddition reactions under solvent-free mechanochemical conditions. Through this process, the principles of atom economy, reduction of solvents and auxiliaries, design for energy efficiency, and reduction of derivatives and catalysis are combined.
NEW JOURNAL OF CHEMISTRY
(2024)
Article
Chemistry, Multidisciplinary
Zhihua Liu, Jinzhe Li, Jianguo Zhou
Summary: This study demonstrates the enhancement of photoelectrochemical activity of BiFeO3 photoelectrodes through ion modification, which increases visible light absorption and active area, leading to improved PEC water splitting performance.
NEW JOURNAL OF CHEMISTRY
(2024)
Article
Chemistry, Multidisciplinary
Yisheng Zhang, Wensong Li, Jing Li, Fang Li, Wei Xue, Xinqiang Zhao, Yanji Wang
Summary: Pt/C and SO42-/ZrO2 were used as catalysts for the synthesis of p-aminophenol through the catalytic transfer hydrogenation of nitrobenzene in water with formic acid as the hydrogen source. The optimal Pt loading for PAP selectivity was found to be 1 wt%. The presence of different valence states of Pt affected both the nitrobenzene hydrogenation and formic acid decomposition. Among different solid acid catalysts tested, SO42-/ZrO2 exhibited the highest catalytic activity for p-aminophenol formation. Under the optimized reaction conditions, the conversion of nitrobenzene reached 80.0%, with a selectivity of 47.6% for p-aminophenol.
NEW JOURNAL OF CHEMISTRY
(2024)
Article
Chemistry, Multidisciplinary
Pradyota Kumar Behera, Papita Behera, Amlan Swain, Santosh Kumar Sahu, Ajeena Sahoo, Laxmidhar Rout
Summary: We have developed a simple and direct method for the synthesis of diaryl ether using an oxygen bridged bimetallic CuMoO4 nanocatalyst under mild reaction conditions. The catalyst exhibited tolerance towards a wide range of substrates with various functional groups. It is efficient and recyclable. This methodology allows easy access to nitrofen derivatives (herbicides) from unactivated 2,4-dichlorophenol, which are important for agriculture and pharmaceuticals.
NEW JOURNAL OF CHEMISTRY
(2024)
Article
Chemistry, Multidisciplinary
Yihua Fu, Yan Zhang, Changwei Hu, Zhishan Su
Summary: The mechanism of the reaction between CO2 and styrene oxide for cyclic carbonate was revealed using density functional theory calculations. The noncatalytic reaction occurred via a concerted mechanism, while in the presence of guanidine and tetrabutylammonium iodide (TBAI) co-catalysts, the epoxide ring-opening by nucleophilic attack of an iodide anion was predicted to be the rate-determining step. Guanidine acted as the H-bond donor to activate styrene oxide, facilitating the reaction with a lower activation barrier.
NEW JOURNAL OF CHEMISTRY
(2024)
Article
Chemistry, Multidisciplinary
Saikat Khamarui, Sirshendu Ghosh
Summary: Copper nanorods (Cu-NRs) exhibit significant plasmonic behavior and can act as efficient catalysts in redox processes and coupling. A benign decarboxylative approach, utilizing localized surface plasmon resonance (LSPR) assisted catalysis with Cu-NRs, has been developed for the production of alkane analogues from alkyl carboxylic acids under visible light. The catalyst shows a broad substrate scope and high functional group tolerance, without the need for an external oxidant or proton source. A plausible mechanism for this recyclable nano-catalyst has also been proposed based on control experiments.
NEW JOURNAL OF CHEMISTRY
(2024)