Article
Environmental Sciences
Silviya Boycheva, Denitza Zgureva, Hristina Lazarova, Margarita Popova
Summary: This study investigates the influence of calcium content in CFA on the properties of coal fly ash zeolites, as well as the carbon capture capacity of different types of zeolites. The development of efficient adsorbents from CFA with varying composition is expected to contribute to environmental benefits and the advancement of CO2 capture technologies in the context of the circular economy.
Article
Chemistry, Multidisciplinary
Saad S. M. Hassan, Ehab M. Abdel Rahman, Gehan M. El-Subruiti, Ayman H. Kamel, Hanan M. Diab
Summary: This study describes the optimal conditions for removing uranium-238, thorium-232, and potassium-40 from wastewater using multiwalled carbon nanotubes (CNTs). The adsorption mechanism is mainly attributed to chemical interactions between the metal ions and surface functional groups of the CNTs. Various parameters such as pH, contact time, initial metal ion concentration, adsorbent dose, and temperature have been studied to understand their effect on the adsorption process. The results show that CNTs have a high efficiency in removing metal ions from wastewater under certain conditions.
Article
Chemistry, Physical
Sungjoon Kweon, Yunhye Cho, Donghui Jo, Hyung-Ki Min, Min Bum Park
Summary: The synthesis and characteristics of cobalt, nickel, and zincosilicate beta zeolites (Co-BEA, Ni-BEA, and Zn-BEA) were investigated through a single-step hydrothermal interzeolite transformation of borosilicate MWW. The crystallization and metal substitution kinetics of the metallosilicates varied depending on the metal type. The Lewis acidities of the three metallosilicates were different despite having comparable metal content, and they showed good catalytic activity for glucose conversion.
CHEMISTRY OF MATERIALS
(2023)
Article
Engineering, Environmental
Xinglei Lyu, Pan Wang, Hongyu Zhao, Yubo Zhang, Zhongwei Meng, Lili Lei
Summary: This study investigated the effects of thermal aging and hydrothermal aging on Cu-based CHA-type catalysts. The results showed that high temperature promoted the transformation and migration of Cu, while water intensified dealumination and reduced NOx conversion.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Nuclear Science & Technology
Jared Goguen, Andrew Walker, Joshua Racette, Justin Riddoch, Shinya Nagasaki
Summary: This study investigates the sorption of Pd(II) onto different minerals in Na-Ca-Cl solutions with varying ionic strength and pH. A 2-site protolysis non-electrostatic surface complexation and cation exchange model is used to describe the sorption behavior, with surface complexation and cation exchange constants optimized to align with experimental results. The impact of surface complexation constants on the sorption behavior is highlighted, with comparison to existing linear free energy relationships.
NUCLEAR ENGINEERING AND TECHNOLOGY
(2021)
Article
Chemistry, Analytical
Ahmed M. M. Masoud, M. M. El-Maadawy, Mohamed H. H. Taha, Amr Meawad
Summary: Contamination of aquatic ecosystems with radioactive nuclides poses a significant threat to human health. This study investigated the use of Cement kiln dust (CKD) as a sorbent for uranium removal from aqueous solutions. The results showed a maximum adsorption capacity of 156.2 mg g(-1) at pH 3.0, indicating good sorption properties of CKD. Overall, the findings demonstrate the exceptional potential of CKD material for U(VI) recovery from aquatic environments.
JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY
(2023)
Article
Nuclear Science & Technology
Andrew Walker, Joshua Racette, Takumi Saito, Tammy (Tianxiao) Yang, Shinya Nagasaki
Summary: This study examines the sorption behavior of selenium onto various solid materials under different ionic strength and pH conditions. The results indicate that the sorption of selenium is minimally affected by ionic strength, while different materials exhibit varying sorption effects.
NUCLEAR ENGINEERING AND TECHNOLOGY
(2022)
Article
Chemistry, Analytical
Anna-Magdalini Psyrillou, Fotini Noli
Summary: The study found that tomato peel has the potential to remove uranium through adsorption, with improved efficiency after acidic or alkaline treatment. The experiments were conducted under various conditions and the adsorption capacity was evaluated by fitting the data to Langmuir and Freundlich models. The results indicated ion exchange and interactions between uranium and surface functional groups.
JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY
(2021)
Article
Food Science & Technology
A. Lopez-Lopez, J. M. Moreno-Baquero, A. Garrido-Fernandez
Summary: The mineral equilibrium between olive flesh and surrounding brines was studied using a pseudo-distribution coefficient, K-d. It was found that Na and K had lower concentrations in the flesh compared to brine, while Ca had higher concentrations. Additionally, Ca may form complexes with soluble olive flesh components. Regression analysis showed that the concentrations of Na, K, and Ca in the flesh could be estimated based on their concentrations in brine.
LWT-FOOD SCIENCE AND TECHNOLOGY
(2023)
Article
Chemistry, Multidisciplinary
Yuto Higuchi, Sana Miyagawa, Shunsuke Tanaka
Summary: OSDA-free steam-assisted interzeolite conversion method successfully achieved green synthesis of zeolites, especially pure PHI phase. The amount of CO2 adsorbed on PHI zeolite increased by ion exchange of alkaline cations, and as the radius of the cation increased, the sharp increase in the adsorption branch shifted to higher pressures.
Article
Chemistry, Inorganic & Nuclear
Cheng Meng, Weihui Shu, Kun Zhao, Chunpei Yan, Zuojia Li, Qianglin Wei, Minjia Wang, Yunhai Liu, Zhibin Zhang
Summary: This study shows that uranyl ions prefer to be adsorbed at deprotonated O sites on the Mo2COH surface and S sites on the MoS2 side of the MoS2/Mo2CT(x) heterojunctions, resulting in the formation of bidentate configurations. In addition to coordination interaction, H-bond and van der Waals interactions also play an important role in binding configurations. Moreover, the oxidation state U-(VI) can be reduced to U-(V) and then to U-(IV) due to the strong reducibility of the Mo2COH surface at room temperature, while the uranyl complex can move freely on the MoS2 surface. This research provides novel nanosorbents for uranyl removal from wastewater and valuable mechanistic interpretations for uranyl adsorption.
INORGANIC CHEMISTRY
(2023)
Article
Chemistry, Physical
Estefania Bello, Pau Ferri, Mathias Nero, Tom Willhammar, Isabel Millet, Frank W. Schuetze, Leen van Tendeloo, Peter N. R. Vennestrom, Mercedes Boronat, Avelino Corma, Manuel Moliner
Summary: Computer-assisted selection of TEA and MTEA for the synthesis of Al-rich CHA-type zeolites showed that MTEA has better OSDA-directing roles, leading to excellent catalytic activity for SCR of NOx with ammonia under heavy duty diesel conditions.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2022)
Article
Chemistry, Physical
Hania Gul, Muhammad Yousaf Arshad, Muhammad Wasim Tahir
Summary: Small scale production of H2 via sorption enhanced auto-thermal reforming (SEATR) of methane was simulated using Ni based catalyst and CaO sorbent for CO2 capture. A one-dimensional heterogeneous reactor model was developed to study the performance of the SEATR reactor. The model showed satisfactory results in terms of CH4 conversion, CO2 capturing, H2 yield, and purity under varying conditions.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Chemistry, Multidisciplinary
D. Aquilano, M. Bruno, A. Cotellucci, L. Pastero, S. Ghignone
Summary: This study describes the 3D epitaxy of deposited gypsum on calcite substrates, providing a theoretical background for the replacement of calcite by gypsum in both laboratory and natural weathering conditions. 2D lattice coincidences are obtained from the matching of periodic bond chains running within the interfaces. The study also investigates the absorption and adsorption at the calcite/gypsum contact in the third dimension. This research is part of a broader program on the epi-interactions among gypsum/calcite, gypsum/bassanite, and gypsum/anhydrite couples.
Article
Chemistry, Multidisciplinary
Souad Achour, Samira Amokrane, Salah Chegrouche, Djamel Nibou, Oussama Baaloudj
Summary: This study focused on enhancing the adsorption efficiency of bentonite through chemical activation for U(VI) removal, ultimately identifying optimal conditions for uranium adsorption at pH=5.6, initial concentration of 67 mg/L, and adsorbent dose of 5 g/L for complete adsorption within 6 hours.
RESEARCH ON CHEMICAL INTERMEDIATES
(2021)
Article
Archaeology
Katerina Theodorakopoulou, Konstantinos Kyriakopoulos, Constantin D. Athanassas, Evangelos Galanopoulos, George Economou, Yannis Maniatis, Athanasios Godelitsas, Elissavet Dotsika, Fanis Mavridis, Andreas Darlas
Summary: This study uses speleothems from the Zoodochos Pigi cave on Santorini to detect past volcanic eruptions. By analyzing elements and minerals in speleothems, volcanic signatures were identified, and the timing of volcanic events was established through charcoal dating. The results of geochemical analysis and radiocarbon dating are consistent with the documented timeline of volcanic eruptions on Santorini and ancient literature.
ENVIRONMENTAL ARCHAEOLOGY
(2021)
Article
Chemistry, Inorganic & Nuclear
Fotini Noli, Victoria Fedorcea, Panagiotis Misaelides, Igor Cretescu, Maria Kapnisti
Summary: The study investigated Cs- and Ba-sorption onto bentonite from Kimolos island in Greece, finding that sorption depended on initial concentration, ionic strength, and temperature, and was well described by Langmuir and Freundlich equations. Thermodynamic parameters suggested that the sorption of Cs- and Ba- was spontaneous and endothermic. The sorption capacity of the Kimolos bentonite for cesium and barium was reduced in the presence of humic acid and competing cations.
APPLIED RADIATION AND ISOTOPES
(2021)
Article
Geochemistry & Geophysics
Konstantinos Kollias, Athanasios Godelitsas, Jose Manuel Astilleros, Spyridon Ladas, Anastasios Lagoyannis, Thomas Mavromoustakos
Summary: The study investigated the interaction of aluminosilicate/silicate and carbonate materials with natural Acid Mine Drainage (AMD) to understand the chemical processes at the interface. The results showed that carbonates are more effective in neutralizing AMD due to better metal removal, whereas aluminosilicate/silicates are more resistant but have lower metal removal rates. Changes in surface topography on zeolite and calcite crystals were observed, suggesting simultaneous dissolution and sorption phenomena. Proposed models in nano(molecular)-scale can explain the interaction of AMD with mineral surfaces.
APPLIED GEOCHEMISTRY
(2021)
Article
Polymer Science
Udit Acharya, Patrycja Bober, Muhammed Arshad Thottappali, Zuzana Moravkova, Magdalena Konefal, Jiri Pfleger
Summary: The research investigated the preparation and characteristics of PPDA/MMT composites, revealing different polymers or oligomers produced during polymerization at different ratios of monomers and MMT. The DC conductivity of the composites was significantly higher than that of the pristine polymer, reaching the highest value at the optimal MMT amount used during polymerization.
Article
Chemistry, Physical
Sonia Bujok, Magdalena Konefal, Rafal Konefal, Martina Nevoralova, Szczepan Bednarz, Kacper Mielczarek, Hynek Benes
Summary: The study found that different multivalent phosphates have a significant impact on the strength of clay-polyelectrolyte interactions and the formation of hydrogel networks, necessitating further research on Laponite (R) nanodispersions to better design self-assembled clay-polyelectrolyte hydrogels.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Chemistry, Multidisciplinary
Electra Kotopoulou, Athanasios Godelitsas, Jorg Gottlicher, Ralph Steininger, Roy Price, David A. Fike, Jan P. Amend, William P. Gilhooly, Gregory Druschell, Paraskevi Nomikou, Platon N. Gamaletsos, Stylianos Lozios
Summary: This study investigates the presence and role of metastable iron sulfides in marine sediments from the Milos hydrothermal system. The results show that these metastable iron sulfides play a critical role in sulfur, iron, and carbon cycling in marine sediments, which has previously been overlooked in standard microscopic, spectroscopic, and diffraction techniques. The findings suggest that the importance of metastable iron sulfides in biogeochemical processes in marine ecosystems may have been underestimated.
ACS EARTH AND SPACE CHEMISTRY
(2022)
Article
Materials Science, Multidisciplinary
Volodymyr Lobaz, Magdalena Konefal, Nikolay Kotov, Miroslava Lukesova, Jirina Hromadkova, Miroslav Slouf, Jiri Panek, Martin Hruby, Tomas Chmela, Pavel Krupicka
Summary: The high susceptibility to corrosion limits the applications of depleted uranium in mechanical engineering. This study proposes a solution of creating a glassy inorganic layer on the surface of depleted uranium, which significantly inhibits corrosion. Zinc lead phosphate low-melting glass is investigated for this purpose and successfully obtained as a glass frit suitable for spraying onto the surface. The sprayed glass powder forms a partially crystallized continuous film upon firing, demonstrating resistance against corrosion and high doses of gamma-irradiation.
Article
Materials Science, Multidisciplinary
Sonal Gupta, Beata A. Zasonska, Udit Acharya, Magdalena Konefal, Vaclav Pokorny, Eduard Petrovsky, Stefan Breitenbach, Christoph Unterweger, Patrycja Bober
Summary: This study demonstrates the efficient removal of toxic anionic dye Reactive Black 5 (RB) using a PEDOT/maghemite composite. The synthesized composite showed promising adsorption behavior and could potentially be used for industrial wastewater treatment and remediation.
MATERIALS CHEMISTRY AND PHYSICS
(2022)
Article
Polymer Science
Szczepan Bednarz, Sonia Bujok, Kacper Mielczarek, Tomasz Swiergosz, Samuel Wierzbicki, Rafal Konefal, Magdalena Konefal, Martina Nevoralova, Ewa Pavlova, Hynek Benes
Summary: Itaconic oligomers were prepared by V-50-induced radical polymerization of itaconic acid in aqueous solution, and their structures were confirmed by ESI-MS and ESI-MS/MS. The dispersing efficiency of the oligomers for Laponite sols at low concentrations was demonstrated by rheology and SAXS measurements.
Article
Chemistry, Multidisciplinary
Petros Karalis, Elissavet Dotsika, Athanasios Godelitsas, Anastasios Antonaras, Anastasia Elektra Poutouki, Maria Tassi
Summary: In this study, chemical analysis was performed on 48 glass samples from Thessaloniki, Greece, revealing that most of the glasses originated from Egypt and were produced using natron as a flux. MnO was the main decolorizer, with some samples also containing Sb2O3. The presence of recycling processes was also evident.
APPLIED SCIENCES-BASEL
(2022)
Article
Nanoscience & Nanotechnology
Konstantin A. Milakin, Sonal Gupta, Libor Kobera, Andrii Mahun, Magdalena Konefal, Olga Kockova, Oumayma Taboubi, Zuzana Moravkova, Jia Min Chin, Kamal Allahyarli, Patrycja Bober
Summary: Composites of PANI and Zr-based MOFs, UiO-66 and UiO-66-NH2, were synthesized with high MOF content close to the theoretical value. The morphology of the composites was determined by the MOF templates, and the MOF structure was mostly preserved. The introduction of MOFs significantly improved the electrochemical performance and cycling stability of the PANI-MOF composites, making them attractive for energy storage applications.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Polymer Science
Elena Tomsik, Daniil R. Nosov, Iryna Ivanko, Vaclav Pokorny, Magdalena Konefal, Zulfiya Cernochova, Krzysztof Tadyszak, Daniel F. Schmidt, Alexander S. Shaplov
Summary: A new method for preparing 2D polyaniline (PANI) films with high active mass loading has been developed via acid-assisted polymerization in the presence of concentrated formic acid. The films exhibit stability due to the small size of the rod-like particles and the positive surface charge of the colloidal PANI particles. These films demonstrate fast ion diffusion and reversible electrochemical reactions, making them suitable for various applications, such as solid-state Li batteries.
Article
Chemistry, Inorganic & Nuclear
Hynek Benes, Magdalena Konefal, Sonia Bujok, Ondrej Mrozek, Ewa Pavlova, Darina Smrzova, Petra Ecorchard
Summary: Intercalation of ionic liquid anions into layered double hydroxides enables the microwave-accelerated ring-opening polymerization of cyclic esters, leading to the synthesis of biodegradable polyester/LDH nanocomposites. The intercalation efficiency of IL anions was found to be highest in Ca2+/Al3+ LDHs prepared using a two-step coprecipitation/anion exchange method, resulting in the successful catalysis of e-caprolactone polymerization and the formation of delaminated and exfoliated LDH nanoparticles.
INORGANIC CHEMISTRY
(2023)
Article
Materials Science, Multidisciplinary
Doebner Von Tumacder, Zuzana Moravkova, Magdalena Konefal, Hernando S. Salapare III, Frederic Guittard, Patrycja Bober
Summary: The influence of organic dyes on the preparation of polypyrrole (PPy) is mainly manifested in changes in morphology and an increase in conductivity. Adding Acid Blue 25 (AB25) and Acid Blue 129 (AB129) during the electrosynthesis of pyrrole supports the modification of PPy morphology and leads to a change in its electrochemical behavior and stability. PPyAB25 exhibits higher electroactivity, capacitance, and diffusion-controlled capacitive contribution compared to PPyAB129.
MATERIALS RESEARCH BULLETIN
(2023)
Article
Polymer Science
Konstantin A. A. Milakin, Oumayma Taboubi, Udit Acharya, Miloslav Lhotka, Vaclav Pokorny, Magdalena Konefal, Olga Kockova, Jirina Hromadkova, Jiri Hodan, Patrycja Bober
Summary: Magnetic polypyrrole-gelatin-barium ferrite (PPy-G-BaFe) cryogels/aerogels were successfully synthesized by incorporating barium ferrite nanoparticles into a gelatin solution and conducting one-step oxidative cryopolymerization of pyrrole. The resulting aerogels exhibited higher specific surface area and conductivity compared to PPy-G aerogel prepared without barium ferrite. The magnetic PPy-G-BaFe aerogel with 10 wt% BaFe content showed significantly improved adsorption capacity and rate for anionic dye removal, making it an attractive adsorbent for water purification.
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)
