Article
Chemistry, Inorganic & Nuclear
Tanmay Rom, Rathindranath Biswas, Krishna Kanta Haldar, Sourav Sarkar, Uttam Saha, Avijit Kumar Paul
Summary: Two new organoamine templated one-dimensional transition metal phosphonate compounds were synthesized and their bifunctional electrocatalytic activities were examined in highly alkaline and acidic media. The cobalt phosphonate system is a new fabrication of sustainable and highly efficient catalysts towards electrochemical water splitting systems in comparison to state-of-the-art materials.
INORGANIC CHEMISTRY
(2021)
Article
Chemistry, Multidisciplinary
Martin Glavinovic, Justin H. Perras, Benjamin S. Gelfand, Jian-Bin Lin, George K. H. Shimizu
Summary: In this study, a novel aryl-phosphonate linker H(6)L2 was designed and synthesized to form metal-phosphonate frameworks with different structures by coordinating with various metals. The resulting metal-organic frameworks exhibited distinct pore structures, with larger cations resulting in microporous structures and smaller metals leading to structures with narrow pores and high selectivity.
CHEMISTRY-A EUROPEAN JOURNAL
(2022)
Article
Chemistry, Physical
Pablo Salcedo-Abraira, Sergio M. F. Vilela, Artem A. Babaryk, Maria Cabrero-Antonino, Pedro Gregorio, Fabrice Salles, Sergio Navalon, Hermenegildo Garcia, Patricia Horcajada
Summary: A novel microporous 2D Ni-based phosphonate metal-organic framework (IEF-13) was successfully synthesized and characterized, showing exceptional thermal and chemical stability and suitable photoresponse for photocatalysis. IEF-13 demonstrated high catalytic activity for H-2 generation and overall water splitting without the need for co-catalysts, providing new avenues for optimizing photocatalytic activity in multifunctional materials.
Article
Crystallography
Song-Song Bao, Nan-Zhu Li, Yu-Xuan Wu, Yang Shen
Summary: This article introduces three new layered mixed metal phosphonates synthesized by reacting metal ions, showing different layer topologies and proton conductivity. The proton conductivity of CoMg center dot nH(2)O is the highest due to the higher Lewis acid strength of Mg(II) lowering the pKa of the coordinated water.
Review
Materials Science, Multidisciplinary
Guoliang Chen, Lei Ge, Joong Hee Lee, Zhonghua Zhu, Hao Wang
Summary: This review summarizes the materials and engineering strategies for designing PCP-based high-temperature proton exchange composite membranes, and discusses the remaining challenges as well as future research areas.
Review
Chemistry, Inorganic & Nuclear
Rui-lan Liu, Dan-Yang Wang, Jin-Rui Shi, Gang Li
Summary: This review discusses the recent advances in proton conductive sulfonate-based MOFs, analyzing the relationship between structures and proton conducting properties. Perspectives on future opportunities and challenges are proposed and highlighted.
COORDINATION CHEMISTRY REVIEWS
(2021)
Article
Chemistry, Inorganic & Nuclear
Felix Steinke, Ali Javed, Stephan Woehlbrandt, Michael Tiemann, Norbert Stock
Summary: The tetratopic linker H8TPPE was used to synthesize three new porous metal-organic frameworks under hydrothermal conditions. The crystal structures showed small differences and proton conductivity measurements revealed different mechanisms. Thorough characterization through various methods was conducted.
DALTON TRANSACTIONS
(2021)
Review
Chemistry, Multidisciplinary
Hui Zhao, Zhong-Yong Yuan
Summary: Transition-metal phosphates and phosphonates have shown great potential for designing efficient electrocatalysts due to their flexible coordination and diverse orientations, but challenges such as low intrinsic catalytic efficiency and electronic conductivity still need to be addressed.
Article
Chemistry, Inorganic & Nuclear
Max Rautenberg, Biswajit Bhattacharya, Chayanika Das, Franziska Emmerling
Summary: This study reported the synthesis and proton conductivity of three new mixed-ligand phosphonate-based MOFs. These MOFs have stable structures and high proton conductivity, showing potential applications in proton-exchange membrane fuel cells.
INORGANIC CHEMISTRY
(2022)
Article
Nanoscience & Nanotechnology
Hongxia Zhao, Chao Qi, Xuewu Yan, Jinyan Ji, Zhifang Chai, Shuao Wang, Tao Zheng
Summary: The material for managing and monitoring waste made from the waste itself is an excellent example of cyclic utilization, which could reduce issues and be more sustainable. The researchers synthesized a three-dimensional porous uranyl phosphonate MOF (UPF-105) through a hydrothermal method. UPF-105 exhibited stability in aqueous solution within the pH range of 1-11 and maintained crystallinity below 215 degrees C. The uncoordinated phosphonate groups in the channels of UPF-105 acted as functional anchors for selectively capturing uranyl ions, with a maximum uranium adsorption capacity of 170.23 mg g(-1). The fluorescence of UPF-105 made it a good candidate for a uranyl ion sensor in uranium-contaminated solutions with concentrations in the range of 5-90 ppm.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Engineering, Environmental
Piyali Bhanja, Yena Kim, Bappi Paul, Yusuf Valentino Kaneti, Asma A. Alothman, Asim Bhaumik, Yusuke Yamauchi
Summary: Low-cost and highly efficient electrocatalysts based on widely abundant elements, such as transition metal oxides and phosphides, have been successfully synthesized and demonstrated promising performance for oxygen evolution reaction. Specifically, the N, P-codoped nickel oxide catalyst exhibits the highest electrocatalytic activity with outstanding stability over a period of 15 hours.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Chemistry, Inorganic & Nuclear
Yue Cao, Xiaoying Zhou, Lindong Luan, Hongmei Zeng, Guohong Zou, Zhien Lin
Summary: Two new metal phosphate-oxalates were prepared under solvent-free conditions, with compound 1 having a honeycomb-like structure and compound 2 showing proton-conducting behaviors under 95% relative humidity.
INORGANIC CHEMISTRY COMMUNICATIONS
(2021)
Article
Chemistry, Multidisciplinary
Wen-Long Xue, Wei-Hua Deng, Hui Chen, Rui-Heng Liu, Jared M. Taylor, Yu-kun Li, Lu Wang, Yu-Heng Deng, Wen-Hua Li, Ying-Yi Wen, Guan-E Wang, Chong-Qing Wan, Gang Xu
Summary: By designing a reliable coordination self-assembly method, a crystalline IL for IL1MOF was successfully achieved. IL1MOF has a structure with long-range ordered arrangement and high ionic conductivity, maintaining high conductivity even in subzero temperatures as low as -150 degrees Celsius.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Review
Chemistry, Inorganic & Nuclear
Bing-Xue Han, Yuan-Fan Jiang, Xue-Rong Sun, Zi-Feng Li, Gang Li
Summary: This article comprehensively summarizes the proton conductive MOFs constructed by N-heterocyclic organic ligands, highlighting their potential as promising proton conductors.
COORDINATION CHEMISTRY REVIEWS
(2021)
Article
Chemistry, Multidisciplinary
Debabrata Chakraborty, Arijit Ghorai, Avik Chowdhury, Susanta Banerjee, Asim Bhaumik
Summary: Developing a robust metal-organic framework for efficient proton conduction in fuel cells is challenging. The synthesized Ni-MOF with a tetradentate aromatic phosphonate ligand shows high stability and potential proton conductivity after external proton doping. High proton conductivity was achieved under humid conditions, indicating promising application prospects for this Ni-MOF.
CHEMISTRY-AN ASIAN JOURNAL
(2021)
Article
Engineering, Chemical
Elias Klemm, Carlos M. S. Lobo, Armin Loewe, Verena Schallhart, Stephan Renninger, Lara Waltersmann, Remi Costa, Andreas Schulz, Ralph-Uwe Dietrich, Lukas Moeltner, Vera Meynen, Alexander Sauer, K. Andreas Friedrich
Summary: The chemical industry needs to achieve carbon neutrality by 2050 by suppressing CO2 emissions from fossil sources. CHEMampere contributes to this goal by producing green chemicals using electricity-based CCU technologies in a decentralized manner.
CANADIAN JOURNAL OF CHEMICAL ENGINEERING
(2022)
Article
Chemistry, Applied
Bram Pawlak, Wouter Marchal, Bharadwaj Mysore Ramesha, Bjorn Joos, Lavinia Calvi, Jan D'Haen, Bart Ruttens, An Hardy, Vera Meynen, Peter Adriaensens, Robert Carleer
Summary: Hybrid titania phosphonate materials have great potential as tailored sorption materials with high added value. By incorporating different functional groups, they possess high chemical stability and structural versatility. In this study, three porous titania phosphonate hybrid structures with different functional groups were synthesized and evaluated for solvent separation. The results showed that diphosphonic acids were effectively incorporated into the hybrid structures, resulting in nanosized particles with a complex but uniquely functionalized surface. The materials demonstrated excellent and tunable sorption behavior.
MICROPOROUS AND MESOPOROUS MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Jinxin Wang, Kaimin Zhang, Safiyye Kavak, Sara Bals, Vera Meynen
Summary: The Stober method is an important process for synthesizing inorganic (nano)materials, but it uses a large amount of organic solvent. This study found that the organic solvent can be omitted in the Stober method, and silica particles with the same size can be successfully synthesized without addition of organic solvents. This method has potential applications in the synthesis of other materials.
CHEMISTRY-A EUROPEAN JOURNAL
(2023)
Article
Materials Science, Multidisciplinary
Wencong Xu, Myrjam Mertens, Thomas Kenis, Elien Derveaux, Peter Adriaensens, Vera Meynen
Summary: The rehydration behavior of metal oxides derived from calcination of Mg-Al layered double hydroxides (LDHs) at high temperatures was studied. The results showed that the metal oxides obtained from thermally treated LDHs can rehydrate into LDHs at room temperature, even after calcination as high as 900 degrees C. Additional analysis revealed differences between the as-synthesized LDHs and the rehydrated metal oxides, suggesting that the process of rehydration resulted in a new LDH rather than reconstructing the former LDH. Therefore, careful storage is recommended to prevent rehydration reactions to altered LDH materials.
MATERIALS CHEMISTRY AND PHYSICS
(2023)
Article
Chemistry, Multidisciplinary
Nikolas Kiraly, Dominika Capkova, Robert Gyepes, Nikola Vargova, Tomas Kazda, Jozef Bednarcik, Daria Yudina, Tomas Zelenka, Pavel Cudek, Vladimir Zelenak, Anshu Sharma, Vera Meynen, Virginie Hornebecq, Andrea Strakova Fedorkova, Miroslav Almasi
Summary: Two new alkaline earth metal-organic frameworks, UPJS-15 and UPJS-16, were synthesized and characterized. UPJS-15 exhibited one-dimensional channels with a size of approximately 11 x 10 angstrom(2) and showed high adsorption capacity for CO2. UPJS-16, on the other hand, did not show significant adsorption for the tested gases.
Article
Engineering, Environmental
Jinxin Wang, Kaimin Zhang, Annemie Bogaerts, Vera Meynen
Summary: The effect of pore size on plasma catalysis is still unknown. In this study, 3D porous Cu and CuO with different pore sizes were prepared and compared in plasma-catalytic dry reforming. It was found that smaller pores led to higher conversion rates of CH4 and CO2, which provides valuable references for future research on plasma catalysts.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Environmental
Jinxin Wang, Kaimin Zhang, Vera Meynen, Annemie Bogaerts
Summary: The performance of dielectric barrier discharge (DBD) plasma reactors in environmental and energy processes is limited due to their low energy yield. In this study, stainless steel rings were placed on the inner electrode rod of the DBD reactor to change the discharge gap and electric field, resulting in improved dry reforming performance. At 50 W supplied power, the rings negatively impacted the performance due to non-uniform discharge distribution. However, at 30 W supplied power, the rings improved the performance, and more rings with a larger diameter further enhanced it. The presence of rings increased the local electric field, displaced charge, discharge fraction, stability, and selectivity to syngas.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Multidisciplinary
Nick Gys, Bram Pawlak, Kristof Marcoen, Gunter Reekmans, Leticia F. Velasco, Rui An, Kenny Wyns, Kitty Baert, Kaimin Zhang, Leon Luntadila Lufungula, Alessandra Piras, Laurens Siemons, Bart Michielsen, Sabine Van Doorslaer, Frank Blockhuys, Tom Hauffman, Peter Adriaensens, Steven Mullens, Vera Meynen
Summary: This study reports on the impact of different ageing conditions on the surface properties of organophosphonic acid grafted mesoporous TiO2. It reveals that under humid conditions with ambient light exposure, the surfaces initiate photo-induced oxidative reactions, resulting in the formation of phosphate species and degradation of the grafted organic group. By understanding the mechanism, solutions to prevent degradation were provided. This work provides valuable insights for the community in choosing optimal exposure/storage conditions to improve material performance and prolong lifetime, positively impacting sustainability.
Article
Chemistry, Physical
Jinxin Wang, Kaimin Zhang, Myrjam Mertens, Annemie Bogaerts, Vera Meynen
Summary: This study provides new insights into the effect of (sub)micrometer particle sized materials on plasma-based CO2CH4 reforming. SiO2 spheres with varying particle sizes, including supported metal, were used. The optimal performance was achieved using 740 nm 5 wt% Ni loaded SiO2, significantly improving CO2 and CH4 conversion and energy yield in a fully packed reactor. These findings highlight the importance of selecting a suitable particle size and can guide the rational design of catalysts for plasma-based reactions.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2023)
Article
Chemistry, Physical
Bharadwaj Mysore Ramesha, Bram Pawlak, Daniel Arenas Esteban, Gunter Reekmans, Sara Bals, Wouter Marchal, Robert Carleer, Peter Adriaensens, Vera Meynen
Summary: The hydrolysis of the phosphonate ester linker is important for the synthesis of porous hybrid organic-inorganic metal phosphonates. This study controlled the in-situ partial hydrolysis of the diphosphonate ester and assessed its impact on the hybrid nanoparticles. The increased acid concentration resulted in a higher degree of partial hydrolysis of the ester linker, affecting the bonding between the linker and TiO2. Understanding the surface dynamics of the linker-TiO2 nanoparticles is crucial for applications in electronic/photonic devices, separation technology, and heterogeneous catalysis.
Article
Chemistry, Physical
Rui An, Lourdes Chukiwanka Quinones, Nick Gys, Elien Derveaux, Kitty Baert, Tom Hauffman, Peter Adriaensens, Frank Blockhuys, Vera Meynen
Summary: The dependence of modification degree and phosphorus chemical environment on pH and chain length was investigated in this study. The results showed that pH had a clear impact on surface modification degrees, with different responses for alkyl- and aminoalkylphosphonic acids. The study also found correlations between aminoalkyl chain length and the NH2/NH3+ ratio, as well as between modification degree and the protonation degree of the amine group.
APPLIED SURFACE SCIENCE
(2023)
Article
Chemistry, Multidisciplinary
Nick Gys, Bram Pawlak, Leon Luntadila Lufungula, Kristof Marcoen, Kenny Wyns, Kitty Baert, Thomas Abo Atia, Jeroen Spooren, Peter Adriaensens, Frank Blockhuys, Tom Hauffman, Vera Meynen, Steven Mullens, Bart Michielsen
Summary: Modification of metal oxides with organophosphonic acids (PAs) allows for control and customization of surface properties. In this study, different metal sorbent materials with varying thiol surface coverages were designed using aqueous-based grafting of 3-mercaptopropylphosphonic acid (3MPPA) on mesoporous TiO2. Surface grafted thiol groups were successfully obtained and their properties were correlated to Pd adsorption performance. The results showed high Pd/S adsorption efficiencies and a significant difference in selectivity towards Pd removal from a spend automotive catalyst leachate.
Article
Chemistry, Multidisciplinary
Nikolas Kiraly, Dominika Capkova, Miroslav Almasi, Tomas Kazda, Ondej Cech, Pavel Cudek, Andrea Strakova Fedorkova, Maxim Lisnichuk, Vera Meynen, Vladimir Zelenak
Summary: In this study, a metal-organic framework (MOF) GaTCPP was used as a conductive additive for sulphur, and showed positive results in carbon dioxide adsorption capacity and electrochemical properties.
