Review
Chemistry, Physical
Haifang Shen, Hao Li, Zhensheng Yang, Chunli Li
Summary: The hydrogen spillover effect (HSPE) plays a significant role in heterogeneous catalysis and hydrogen storage, influencing the properties and performance of porous nanomaterials as well as multiphase catalytic reactions. Recent advancements in characterization techniques have provided valuable insights into understanding the HSPE.
GREEN ENERGY & ENVIRONMENT
(2022)
Review
Chemistry, Physical
Haifang Shen, Hao Li, Zhensheng Yang, Chunli Li
Summary: The hydrogen spillover effect (HSPE) is an important interfacial phenomenon in heterogeneous catalysis and hydrogen storage, influencing the performance of porous nanomaterials. Advanced characterization techniques have improved our understanding of the HSPE, leading to insights into its impact on hydrogen storage performance and catalysis. This review discusses the potential, opportunities, and challenges in the research area of hydrogen spillover.
GREEN ENERGY & ENVIRONMENT
(2022)
Article
Chemistry, Physical
Sami-ullah Rather
Summary: This study found that the hydrogen storage capacity of purified MWCNTs was significantly enhanced by incorporating Ti catalyst, with longer exposure of Ti to the MWCNTs leading to further improvement in hydrogen storage capacity. The interfacial diffusion of hydrogen and the presence of a higher amount of Ti on the MWCNTs were identified as key factors contributing to the enhanced hydrogen uptake.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Physical
Chaonan Jin, Jiao Li, Keyan Zhang, Habibullah, Guanghui Xia, Chaoling Wu, Yao Wang, Wanglai Cen, Yiwen Chen, Yigang Yan, Yungui Chen
Summary: The emergence of graphene provides new possibilities for the development of hydrogen storage materials. In this study, a Pd3P nanoparticles decorated P-doped graphene material with high gravimetric density of hydrogen storage was successfully synthesized. It exhibits both physical and chemical adsorption mechanisms, and shows stable structure and reversible hydrogen storage capacity after multiple cycles.
Review
Engineering, Environmental
Mengzhu Li, Weinan Yin, Junan Pan, Yanwei Zhu, Ning Sun, Xinyu Zhang, Yingtong Wan, Zhongzhong Luo, Lanhua Yi, Longlu Wang
Summary: Hydrogen spillover, a phenomenon of active species migration, has received considerable attention in recent years. It not only participates in catalytic reactions as reactants, but also induces support to form defects or phase transitions, thereby adjusting the energy band and improving catalytic performance. As a result, hydrogen spillover has broad potential applications in heterogeneous catalysis and hydrogen production. However, there is still a lack of clear summary on the reaction mechanism and important applications of hydrogen spillover. This review focuses on the recent progress of hydrogen spillover, including different types, structural models, and applications, aiming to provide new ideas for the design and application of hydrogen spillover.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Physical
Alejandra Granja-DelRio, Maite Alducin, J. Inaki Juaristi, Maria J. Lopez, Julio A. Alonso
Summary: Experimental evidence shows that doping porous carbons with metal nanoparticles, such as palladium, enhances the hydrogen storage capacity. However, simulations reveal that high activation barriers prevent hydrogen spillover from anchored Pd clusters to the carbon substrate, as hydrogen atoms prefer to absorb within the Pd cluster rather than migrate to the carbon substrate.
APPLIED SURFACE SCIENCE
(2021)
Article
Chemistry, Multidisciplinary
Quanfeng He, Lanping Zeng, Lianhuan Han, Juan Peng, Matthew M. Sartin, Yuan-Zhi Tan, Dongping Zhan, Zhong-Qun Tian
Summary: The study presented a spatially-confined electrochemical system and experimental evidence of high hydrogen storage capacity on single layer graphene, showing the potential for practical utilization of hydrogen energy.
SCIENCE CHINA-CHEMISTRY
(2022)
Article
Engineering, Chemical
Seul-Yi Lee, Jong-Hoon Lee, Yeong-Hun Kim, Jong-Woo Kim, Kyu-Jae Lee, Soo-Jin Park
Summary: With the increasing demand for efficient and renewable energy, the hydrogen era has begun. There is a need for efficient hydrogen storage techniques to meet commercial requirements. Four techniques have been suggested for hydrogen storage: compressed storage, hydrogen liquefaction, chemical absorption, and physical adsorption. Physical hydrogen adsorption, which uses porous adsorbents, is considered one of the most promising techniques due to its low costs, high storage densities, and fast charging-discharging kinetics. The development of efficient materials for hydrogen storage is a major challenge in the hydrogen era.
Article
Chemistry, Physical
Mohanapriya Subramani, Deepak Arumugam, Shankar Ramasamy
Summary: In this study, the quantum chemical method was used to investigate the hydrogen storage behavior on Pt (n = 1-4) cluster decorated C48H16 sheet. The results showed that the Pt (n = 1-4) clusters were strongly bonded to the surface of C48H16 sheet, and the charge transfer from Pt (n = 1-4) to C48H16 created an empty orbital for hydrogen adsorption. Molecular hydrogen was initially adsorbed through Kubas interaction, and then dissociative hydrogen adsorption occurred. External electric fields could enhance or weaken the adsorption ability.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Chemistry, Physical
Shrilekha V. Sawant, Manishkumar D. Yadav, Seemita Banerjee, Ashwin W. Patwardhan, Jyeshtharaj B. Joshi, Kinshuk Dasgupta
Summary: Boron-doped carbon nanotubes (BCNTs) with varying boron content were prepared by thermo-catalytic decomposition of ethanol in the presence of boric acid. Hydrogen adsorption capacity was found to improve up to a critical boron content, after which it decreased. Various factors such as dopant concentration, bonding with carbon structures, crystallinity, and defects play pivotal roles in determining the extent of hydrogen adsorption by BCNTs.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Multidisciplinary
Rui Shi, Haoxing Yan, Jiguang Zhang, Haiguang Gao, Yunfeng Zhu, Yana Liu, Xiaohui Hu, Yao Zhang, Liquan Li
Summary: A simple, cost-effective method of water treatment is proposed to produce highly reactive and air-stable bulk Mg-Ni-based hydrides in this study. The method can significantly decrease the dehydrogenation temperature and allow the hydrides to be stored under ambient conditions without losing activity, providing an alternative approach to design low-cost, highly active metal hydrides.
Article
Chemistry, Multidisciplinary
Andrei Iliescu, Justin L. Andrews, Julius J. Oppenheim, Mircea Dinca
Summary: In this study, a new metal-organic framework material Zn-3[(Zn4Cl)(3)(BTT)(8)](2) with an anionic sodalite-like structure was synthesized and characterized. The material, ZnZnBTT, showed promising Zn-ion conductivity, making it a potential candidate for quasi-solid-state zinc-ion batteries.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Engineering, Environmental
B. S. Xaba, A. S. Mahomed, H. B. Friedrich
Summary: The experiments on Ga2O3 and ZrO2 modified Cu-Zn based catalysts revealed that the ZrO2 promoted catalyst showed higher methanol productivity. Furthermore, the ZrO2 modified catalyst exhibited advantages in CO2 uptake and adsorption strength, contributing to the higher methanol yield.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Energy & Fuels
Foroozan Samimi, Maryam Ghiyasiyan-Arani, Masoud Salavati-Niasari
Summary: This research focuses on the improvement of electrochemical hydrogen storage performance by outlining a novel nanocomposite (Ca2Mn3O8/CaMn3O6/MMT). The addition of Ca2Mn3O8/CaMn3O6 nanoparticles in the K10 MMT matrix significantly enhances the hydrogen storage capacity. The optimized composition of 10% nanoparticles in the Ca2Mn3O8/CaMn3O6/MMT nanocomposites exhibits a synergistic effect of spillover, redox, and physisorption mechanisms, making it a promising material for hydrogen storage systems.
Article
Chemistry, Multidisciplinary
Haijie Cai, Na Luo, Xiaowu Wang, Mengmeng Guo, Xiaojie Li, Bo Lu, Zhenggang Xue, Jiaqiang Xu
Summary: In this study, a hollow Pd-NiO/SnO2 buffered nanocavity was engineered to achieve ultrasensitive H-2 sensing. The unique nanocavity can induce more H-2 absorption and improve the kinetical H-2 ab/desorption rates. The Pd-NiO/SnO2 sensors exhibit an ultrasensitive response and low detection limit, surpassing most reported H-2 sensors.
Article
Chemistry, Physical
Dorottya Hursan, Marietta Abel, Kornelia Baan, Edvin Fako, Gergely F. Samu, Huu Chuong Nguyen, Nuria Lopez, Plamen Atanassov, Zoltan Konya, Andras Sapi, Csaba Janaky
Summary: By synthesizing a set of N-C catalysts with identical morphologies and systematically changing the precursors, the study found that the CO2 reduction activity of these catalysts is correlated with the chemical composition, and the activity trend is similar in different reaction scenarios.
Article
Chemistry, Physical
Michele Ferri, Laurent Delafontaine, Shengyuan Guo, Tristan Asset, Pierangela Cristiani, Sebastiano Campisi, Antonella Gervasini, Plamen Atanassov
Summary: Copper has unique capabilities in CO2 reduction reactions, but faces challenges in industrial-scale applications. Modifying copper-based catalysts with acidic/basic functionalities can optimize selectivity and reduce overpotentials in CO2RR.
ACS ENERGY LETTERS
(2022)
Article
Chemistry, Physical
Alessio Cosenza, Laurent Delafontaine, Alvin Ly, Hanson Wang, Eamonn Murphy, Yuanchao Liu, Stefania Specchia, Plamen Atanassov
Summary: In this study, a set of PGM-free mono-metallic electrocatalysts were synthesized using multiple silica templates and a modified acid-free sacrificial support method. The iron-based electrocatalysts showed higher activity for oxygen reduction reaction (ORR) compared to other catalysts.
JOURNAL OF POWER SOURCES
(2023)
Article
Chemistry, Physical
Valerio C. A. Ficca, Carlo Santoro, Ernesto Placidi, Fabrizio Arciprete, Alexey Serov, Plamen Atanassov, Barbara Mecheri
Summary: The oxygen reduction reaction (ORR) is crucial for the conversion of energy in fuel cells, and platinum group metal-free (PGM-free) electrocatalysts show promise as alternatives to Pt/C electrocatalysts. However, evaluating the performance of PGM-free catalysts requires specific activity descriptors, and differentiating between the primary and secondary sites of these catalysts can be challenging. In this study, a method for evaluating the interaction between probing molecules and primary and secondary sites of PGM-free electrocatalysts was proposed, with the results suggesting the exchange current density as an effective tool for discriminating poisoning of specific active sites.
Article
Chemistry, Physical
Shengyuan Guo, Yuanchao Liu, Ying Huang, Hanson Wang, Eamonn Murphy, Laurent Delafontaine, Jiazhe Loki Chen, Iryna V. Zenyuk, Plamen Atanassov
Summary: Acetic acid/acetate is an important precursor for chemical manufacturing and biofuel synthesis. Carbon monoxide electrolysis can enhance the selectivity for multicarbon products, and this research explores practical approaches to improve acetate and 1-propanol selectivity and yield using a copper catalyst. The pH and catalyst loading were found to strongly influence the performance, and in situ Raman and multiphysics modeling provided insights into the mechanism of improvement.
ACS ENERGY LETTERS
(2023)
Article
Chemistry, Physical
Laurent Delafontaine, Alessio Cosenza, Eamonn Murphy, Yuanchao Liu, Jiazhe Chen, Baiyu Sun, Plamen Atanassov
Summary: The renewable electroreduction of CO2 to CO is crucial for future clean energy scenarios, as it allows for the recycling of carbon emissions into value-added chemicals. Non-PGM and M-N-C catalysts show high selectivity for CO and H2 formation, making them ideal candidates for these applications.
ACS APPLIED ENERGY MATERIALS
(2023)
Article
Chemistry, Inorganic & Nuclear
Suhwan Kim, Raeesh Muhammad, Kwanghyo Son, Hyunchul Oh
Summary: Heterogenized metal-organic frameworks (MOFs) obtained from the reaction of Gd3+ and Dy3+ ions exhibit high magnetic entropy change and temperature for magnetic refrigeration, providing the possibility of extending the working temperature of magnetic cooling materials.
INORGANIC CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Raeesh Muhammad, Yoon-Chae Nah, Hyunchul Oh
Summary: A method for preparing high surface area nanoporous activated carbon fibers from spider silk (a natural biomaterial) using potassium hydroxide activation is reported. The fibers have a high specific surface area and oxygen-rich surface, providing enhanced CO2 capture and storage capacity for energy carrier gases (H-2 and CH4). The fibers also demonstrate easy regeneration and minimal loss in uptake capacity. This study shows that biomaterials can be effectively converted into high surface area activated carbon fibers for advanced energy and environmental applications.
JOURNAL OF CO2 UTILIZATION
(2023)
Article
Nanoscience & Nanotechnology
Margaret A. Fitzgerald, Hanson Wang, Alvin Ly, Jayson Foster, Matthew Sorrells, Tristan Asset, Plamen Atanassov, Svitlana Pylypenko
Summary: Polymer electrolyte membrane fuel cells are a promising commercial technology, but there are challenges regarding the utilization and stability of Pt catalysts. This study investigates the effects of nitrogen on the nucleation and stability of Pt catalyst nanoparticles deposited on N-doped carbon supports. Through analysis using XPS and TEM, trends related to nitrogen speciation are identified. The systematic incorporation of high throughput machine-learning-based imaging analysis and identical-location microscopy provides mechanistic insights for catalysis and fuel cells applications.
ACS APPLIED NANO MATERIALS
(2023)
Article
Nanoscience & Nanotechnology
Kerstin Koeble, Monja Schilling, Laszlo Eifert, Nico Bevilacqua, Kieran F. Fahy, Plamen Atanassov, Aimy Bazylak, Roswitha Zeis
Summary: This study demonstrates the importance of electrode modifications in vanadium redox flow batteries and provides insights into the effects of different modifications on electrochemical performance, wetting behavior, and tendency towards hydrogen evolution side reactions through synchrotron X-ray imaging and traditional characterization approaches.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Physical
Kaustubh Khedekar, Andrea Zaffora, Monica Santamaria, Matthew Coats, Svitlana Pylypenko, Jonathan Braaten, Plamen Atanassov, Nobumichi Tamura, Lei Cheng, Christina Johnston, Iryna V. Zenyuk
Summary: Fuel cell heavy-duty vehicles (HDVs) require more durable oxygen-reduction-reaction electrocatalysts, and understanding the realistic degradation mechanisms is crucial. The study investigated the movement and degradation of electrocatalysts in membrane electrode assemblies using micro-X-ray fluorescence spectroscopy. It was found that the electrocatalyst exhibited heavy in-plane movement and preferential movement away from cracks in the cathode catalyst layer. By performing further experiments, the correlation between the increase in nanoparticle size of the electrocatalyst and loading change was discovered. This research provides insights for developing mitigation strategies and durable electrocatalysts in structured cathode catalyst layers.
Article
Chemistry, Multidisciplinary
Cheolwon Jung, Sang Beom Choi, Jaewoo Park, Minji Jung, Jonghoon Kim, Hyunchul Oh, Jaheon Kim
Summary: Cu(ii)-based zeolitic imidazolates (Cu-ZIFs), Cu-ZIF-gis and -rho, with Cu(nIm)(2) (nIm = 2-nitroimidazolate) formula, exhibit highly-flattened tetrahedral coordination geometry. Cu-ZIF-gis possesses 2.4Å cylindrical pores for H-2 gas adsorption, while Cu-ZIF-rho features 19.8Å cages and a BET surface area of 1320 m(2) g(-1).
CHEMICAL COMMUNICATIONS
(2023)
Article
Chemistry, Physical
Valerio C. A. Ficca, Carlo Santoro, Ernesto Placidi, Fabrizio Arciprete, Alexey Serov, Plamen Atanassov, Barbara Mecheri
Summary: The oxygen reduction reaction (ORR) is crucial for energy conversion in fuel cells, but requires an electrocatalyst. Platinum group metal-free (PGM-free) electrocatalysts are a promising alternative to Pt/C, but their evaluation requires specific activity descriptors. This study proposes a method for evaluating the chemisorption interaction of probing molecules with PGM-free primary and secondary sites to effectively evaluate site density. The results identify the exchange current density as a tool for discriminating specific site poisoning.
Article
Materials Science, Multidisciplinary
David Sebastian, Stefano Trocino, Carmelo Lo Vecchio, Alexey Serov, Plamen Atanassov, Vincenzo Baglio
Summary: Dye-sensitized solar cells (DSSCs) heavily rely on the counter electrode for their performance. Platinum (Pt) has been traditionally used as a counter-electrode material, but its limitations have led to the exploration of alternative materials such as iron-nitrogen-carbon (Fe-N-C) catalysts. This study investigates the performance of Fe-N-C materials as counter electrodes in DSSCs and provides insights for the development of this sustainable technology.
MATERIALS FOR RENEWABLE AND SUSTAINABLE ENERGY
(2023)
Article
Chemistry, Applied
Mohsin Muhyuddin, Giorgio Tseberlidis, Maurizio Acciarri, Oran Lori, Massimiliano D'Arienzo, Massimiliano Cavallini, Plamen Atanassov, Lior Elbaz, Alessandro Lavacchi, Carlo Santoro
Summary: Hydrogen production via water electrolysis is a promising energy solution, but the sluggish hydrogen evolution reaction (HER) hampers its progress. Molybdenum disulfide (MoS2) has emerged as a reliable alternative to expensive platinum group metal (PGM) catalysts. This comprehensive review summarizes recent scientific endeavors to enhance the HER activity of MoS2-based electrocatalysts through various fabrication methods and provides insights into the factors influencing their performance.
JOURNAL OF ENERGY CHEMISTRY
(2023)
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)
