Article
Chemistry, Applied
Cristina Pizzolitto, Elena Ghedini, Somayeh Taghavi, Federica Menegazzo, Giuseppe Cruciani, Markus Peurla, Kari Eranen, Ivo Heinmaa, Atte Aho, Narendra Kumar, Dmitry Yu Murzin, Tapio Salmi, Michela Signoretto
Summary: The study focuses on improving the acidity of silica alumina composite using SBA-15, with modifications to enhance Lewis and Bronsted acidities, and introduction of alumina as a co-catalyst. The balanced acidities and proper porosity of the modified SBA-15 led to efficient performance in converting glucose to levulinic acid.
MICROPOROUS AND MESOPOROUS MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Manoj Ravi, Vitaly L. Sushkevich, Jeroen A. van Bokhoven
Summary: The Lewis acidic aluminum in zeolites can be transformed into octahedrally coordinated aluminum, which serves as the precursor of Lewis acid sites. These Lewis acid sites preferentially locate in the pore structure of mordenite, particularly in the side-pockets. By reverting the octahedrally coordinated aluminum back to a tetrahedral geometry, the corresponding Bronsted acid sites are restored, showing a reversible switch between Lewis and Bronsted acidity.
Article
Chemistry, Analytical
Hanmin Yang, Tong Han, Weihong Yang, Linda Sandstrom, Par G. Jonsson
Summary: This study investigates the influence of acidic and porous properties of five aluminosilicate catalysts on coke formation during fast catalytic pyrolysis of lignin. The results show that the catalyst should have a pore size consistent with the critical diameters of the pyrolysis products of lignin to achieve high selectivity and reduce coke formation.
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
(2022)
Article
Thermodynamics
Raissa Carvalho Martins, Simone Pereira da Silva Ribeiro, Michelle Jakeline Cunha Rezende, Regina Sandra Veiga Nascimento, Marco Antonio Chaer Nascimento, Jose-Marie Lopez-Cuesta
Summary: This study investigates the impact of montmorillonite acidity on the thermal degradation and cone calorimeter parameters of an intumescent composite. The results indicate that the absence of moderate-strength acidic sites leads to an increase in the peak heat release rate. Furthermore, the addition of clay minerals helps preserve char at higher temperatures and excessive Bronsted sites contribute to increased esterification reactions. Additionally, the mechanical properties of the composites remain unaffected by the presence of clay minerals.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2023)
Article
Chemistry, Physical
Luqman H. Hashim, Ahmed Halilu, Yahaya Balarabe Umar, Mohd Rafie Bin Johan, Mohamed Kheireddine Aroua, Paramita Koley, Suresh K. Bhargava
Summary: This study focuses on the design and synthesis of highly active bifunctional catalysts for the conversion of furfural to furfuryl acetate. The catalysts with lower lattice strain exhibited higher catalytic activity.
CATALYSIS SCIENCE & TECHNOLOGY
(2023)
Article
Chemistry, Organic
Isuru M. Jayalath, Madelyn M. Gerken, Georgia Mantel, C. Scott Hartley
Summary: The study investigates the impact of carbodiimide-induced geometry changes in a chemically fueled system, inspired by nucleotide-induced conformational changes in motor proteins. The results show that the efficiency, maximum concentration, and lifetime of the system are significantly influenced by steric hindrance and electronic effects of the substituents.
JOURNAL OF ORGANIC CHEMISTRY
(2021)
Article
Chemistry, Physical
Manikandan Krishnamurthy, M. Swaminathan
Summary: Hierarchical micro-mesoporous ZSM-5 zeolite was synthesized by using corn plant stem pith powder as a hard template. The addition of pith powder increased the porosity of the zeolites, resulting in better catalytic performance with higher conversion rate and selectivity in the formation of 2-Benzyl-1, 3, 5-trimethylbenzene. The presence of hierarchical pores and strong acidity in C-ZSM-5 contributed to its improved selectivity and stability.
Article
Chemistry, Multidisciplinary
Felix Feige, Lorraine A. Malaspina, Elena Rychagova, Sergey Ketkov, Simon Grabowsky, Emanuel Hupf, Jens Beckmann
Summary: The Bronsted acidity of perfluorinated trialkoxysilanol is more than 13 orders of magnitude higher than that of orthosilicic acid, and easily deprotonated by simple amines and pyridines to form silanolates with extremely short Si-O bonds.
CHEMISTRY-A EUROPEAN JOURNAL
(2021)
Article
Chemistry, Multidisciplinary
Xiao Feng, Himanshu Sekhar Jena, Chidharth Krishnaraj, Daniel Arenas-Esteban, Karen Leus, Guangbo Wang, Jiamin Sun, Martina Ruescher, Janis Timoshenko, Beatriz Roldan Cuenya, Sara Bals, Pascal Van der Voort
Summary: The study introduced a novel synthesis strategy to create solely missing cluster defects, avoiding the difficulty in differentiating missing linker defects. Through various characterization methods, the missing cluster UiO-66 with good performance was successfully synthesized.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2021)
Article
Materials Science, Ceramics
Wafa Ksila, Mohamed Kadri Younes, Abdelhamid Ghorbel, Alain Rives
Summary: Our research focused on the preparation of new zirconia-doped telluric acid catalysts using the sol-gel method, and investigated the optimization of various preparation parameters on the catalyst. The results showed that the addition of HNO3 significantly improved the acidity of the catalyst, while doping zirconia with telluric acid enhanced both the acidity and catalytic performance of the catalyst. However, calcination of the catalyst led to a loss in acidity and a decrease in catalytic activity.
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
(2021)
Article
Chemistry, Physical
Do Trung Hieu, Hendrik Kosslick, Muhammad Riaz, Axel Schulz, Armin Springer, Marcus Frank, Christian Jaeger, Nguyen Thi Minh Thu, Le Thanh Son
Summary: This study prepared acidic HCLIN catalysts by ion exchange and calcination using natural zeolite clinoptilolite as a starting material. The catalysts showed good catalytic performance in the etherification of glycerol.
Article
Engineering, Environmental
Dequan Fan, Shuchao Jiang, Kai Qiao, Shengzhong Zhang, Hongtao Wang, Dechen Bo, Ying Zhang, Tie Yu, Dong Zhai, Guoqing Ren, Hao Yang, Kumar Marella Ravi
Summary: In this study, the impact of acidity on copper species distribution and CO storage performance during solid exchange process was evaluated. The results showed that NaY-Cu samples had superior CO storage ability compared to NaY supports, and the CO adsorption behaviors over hydroxyls, Na+ cations, and Cu+/Cu2+ cations were further examined to reveal the adsorption sites. The relation between faujasite acidity and CuCl distribution was systematically concluded to illustrate their industrial application potential.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Materials Science, Paper & Wood
Mohammad Reza Amiri Margavi, Mohammad Talaeipour, AmirHooman Hemmasi, Behzad Bazyar, Ismaeil Ghasemi
Summary: The study investigated the effects of chemical treatment and polypropylene molecular weight on the physical, mechanical, and morphological properties of a novel cellulosic biocomposite made from paper mill sludge fibers. The results showed that chemical treatment reduced water absorption and swelling, and improved tensile and flexural strength when coupled with a specific agent. Comparison between different chemical treatments revealed that succinic acid yielded better mechanical properties than acetic acid. FTIR analysis indicated a decrease in hydroxyl groups, and SEM images showed improved interface between fibers and polypropylene after chemical treatment of sludge fibers.
Article
Chemistry, Applied
Bo Meng, Shenyong Ren, Xinyue Zhang, Kang Chen, Wenkai Wei, Qiaoxia Guo, Baojian Shen
Summary: This study aims to increase the density of strong Bronsted acid in Y zeolite by introducing Zr4+, which leads to improved catalytic cracking efficiency. The introduction of Zr4+ reduces the content of certain species in the zeolite and promotes the formation of abundant mesoporous structures.
MICROPOROUS AND MESOPOROUS MATERIALS
(2022)
Article
Chemistry, Physical
Kamila Pyra, Karolina A. Tarach, Kinga Gora-Marek
Summary: This study explored the production of high olefins yield from plastic waste without losing gasoline fraction, by comparing different properties of commercial FAU zeolites and mesoporous materials. A polypropylene (PP) cracking catalyst suitable for low-temperature operation was found. Advanced characterization techniques and analysis methods provided insights into the active species during cracking reaction and the nature of coke deposit formed after reaction.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2021)
Review
Chemistry, Multidisciplinary
Arun V. Baskar, Gurwinder Singh, Ajanya M. Ruban, Jefrin M. Davidraj, Rohan Bahadur, Prasanthi Sooriyakumar, Prashant Kumar, Ajay Karakoti, Jiabao Yi, Ajayan Vinu
Summary: The rapid growth in electronic and portable devices has increased the demand for safe, durable, lightweight, low-cost, high-energy, and high-power-density electrode materials for rechargeable batteries. This review discusses the use of biomass-based materials and their hybrids for energy generation research, highlighting their unique properties and advancements in preparation and modification strategies. The electrochemical performances of these materials in different batteries and the challenges in maximizing their specific capacity and lifetime are also addressed.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Review
Chemistry, Multidisciplinary
Xiaofang Jia, Jieman Chen, Wenyan Lv, Huijia Li, Katsuhiko Ariga
Summary: Biophysical cues of native extracellular matrix (ECM) can affect cellular behavior. Dynamic biomaterials based on material nanoarchitectonics can emulate the dynamics and behavior of living systems. This review introduces the concept of material nanoarchitectonics, summarizes recent advances in dynamic biomaterials, and discusses the opportunities and challenges in this field.
CELL REPORTS PHYSICAL SCIENCE
(2023)
Article
Chemistry, Multidisciplinary
Chhabi Lal Gnawali, Sarita Manandhar, Sabina Shahi, Rekha Goswami Shrestha, Mandira Pradhananga Adhikari, Rinita Rajbhandari, Bhadra P. Pokharel, Renzhi Ma, Katsuhiko Ariga, Lok Kumar Shrestha
Summary: This study investigates the methylene blue adsorption and energy storage supercapacitance performances of nanoporous activated carbons derived from Terminalia bellirica seed waste activated by zinc chloride. The activated carbon exhibited excellent adsorption properties and high specific capacitance, making it suitable for adsorption technology and high-performance supercapacitor applications.
BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN
(2023)
Review
Chemistry, Physical
Jingwen Song, Kohsaku Kawakami, Katsuhiko Ariga
Summary: Nanoarchitectonics, a post-nanotechnology concept, focuses on constructing functional materials from nano-units to bridge the gap between nanotechnology and materials science. This review article discusses three antibacterial strategies based on nanoarchitectonics: new antimicrobial agents and therapeutic modalities with high effectiveness against methicillin-resistant Staphylococcus aureus; integration of antimicrobial nanoarchitectonics structures into medical devices; and the use of nanoarchitectonics hydrogels as antimicrobial reservoirs for sustained-release of antibacterial agents.
CURRENT OPINION IN COLLOID & INTERFACE SCIENCE
(2023)
Review
Polymer Science
Biswa Nath Bhadra, Lok Kumar Shrestha, Katsuhiko Ariga
Summary: This article summarizes the synthesis, structure, and functionality of porous boron nitride (BN) materials, as well as their application in water pollution treatment. The adsorption of hazardous organic and toxic inorganic pollutants from aqueous solutions can be effectively achieved using porous BN-based materials. Understanding the interaction mechanisms between pollutants and BN-based adsorbents could contribute to the improvement of adsorption technology for environmental remediation.
JOURNAL OF INORGANIC AND ORGANOMETALLIC POLYMERS AND MATERIALS
(2023)
Review
Chemistry, Multidisciplinary
Xuechen Shen, Jingwen Song, Kohsaku Kawakami, Katsuhiko Ariga
Summary: Nanoarchitectonics is a concept that applies knowledge from nanotechnology to material science to construct functional material systems using nano-units as building blocks. Various functional materials with different shapes, dimensionalities, and hierarchical properties can be created through nanoarchitectonics. The review highlights the creation of zero-dimensional nanoparticles from fullerenes and their functionality in fields such as organic solar cells, thermoelectric materials, antioxidants, and biomedical materials. It emphasizes the importance of diverse functions that can be achieved from simple units in nanoarchitectonics.
JOURNAL OF NANOPARTICLE RESEARCH
(2023)
Article
Materials Science, Multidisciplinary
Sujanya Maria Ruban, Kavitha Ramadass, Gurwinder Singh, Siddulu Naidu Talapaneni, Gunda Kamalakar, Chandrakanth Rajanna Gadipelly, Lakshmi Kantham Mannepalli, Yoshihiro Sugi, Ajayan Vinu
Summary: Carbon nitrides are a type of metal-free catalytic materials with great potential for chemical transformations and organocatalysis. Their low cost, thermal and chemical stability, non-toxicity, ease of functionalization, and porosity make them versatile for catalysis. This review discusses N-rich carbon nitrides and their role in various organic catalytic reactions. It also explores the structure-property relationship and potential value of these materials compared to other catalytic materials. The review aims to provide up-to-date information on the developments in carbon nitride-based organic catalysis and their future prospects.
SCIENCE AND TECHNOLOGY OF ADVANCED MATERIALS
(2023)
Review
Chemistry, Multidisciplinary
Shan Mohanan, Xinwei Guan, Mingtao Liang, Ajay Karakoti, Ajayan Vinu
Summary: The design of novel drug delivery systems is crucial in disease treatments, and mesoporous silica nanoparticles (MSNs) have shown great promise due to their stability, tunable morphologies/sizes, and loading capability. Functionalization of MSNs with drugs, imaging, and targeting agents is enabled by the presence of surface silanol groups, making them versatile and popular among researchers. Stimuli-responsive silanol conjugates have emerged as an effective way to deliver therapeutic drugs precisely and on-demand, and it is important to understand the role of surface silanols in MSN as a drug delivery platform. This review provides an analytical understanding of surface silanols, their chemistry, identification methods, and their correlation with properties and performance.
Article
Chemistry, Multidisciplinary
Lok Kumar Shrestha, Zexuan Wei, Gokulnath Subramaniam, Rekha Goswami Shrestha, Ravi Singh, Marappan Sathish, Renzhi Ma, Jonathan P. Hill, Junji Nakamura, Katsuhiko Ariga
Summary: The energy storage performances of supercapacitors can be improved by using nanostructured hierarchically micro/mesoporous hollow carbon materials, which have ultra-high specific surface areas and rapid diffusion of electrolyte ions. In this study, hollow carbon spheres were prepared by high-temperature carbonization of self-assembled fullerene-ethylenediamine hollow spheres. The obtained carbon spheres showed large surface areas and pore volumes, and exhibited remarkable electrochemical capacitance properties.
Review
Chemistry, Multidisciplinary
Katsuhiko Ariga
Summary: Nanoarchitectonics is the methodology that utilizes chemistry, nanotechnology, and materials science to produce functional materials from nano-units. This review article provides an overview of the integration of chemistry and nanotechnology, as well as the transformation of molecules and nanomaterials into functional materials. It highlights the significance of Chem+Nano+Mat in nanoarchitectonics.
Review
Chemistry, Analytical
Karthick Velu, Rekha Goswami Shrestha, Lok Kumar Shrestha, Katsuhiko Ariga
Summary: The fabrication of various sensing devices and the ability to harmonize materials for a higher degree of organization is essential for effective sensing systems. Nanoarchitectonics allows for atomic/molecular level manipulations that create a higher area-to-volume ratio in nanoscale hierarchical structures for use in ideal sensing applications. This review highlights the latest advancements in nanoarchitectonics approaches to tailor materials for various sensing applications, including biological micro/macro molecules, volatile organic compounds (VOC), microscopic recognition, and the selective discrimination of microparticles.
Article
Chemistry, Multidisciplinary
Shan Mohanan, C. Sathish, Kavitha Ramadass, Mingtao Liang, Ajayan Vinu
Summary: This study demonstrates the synthesis of core-shell ordered mesoporous silica nanoparticles (CSMS) with tunable particle size and shape using a dual surfactant-assisted approach. By modifying the synthesis conditions, monodispersed and ordered mesoporous silica nanoparticles with tunable particle size and various morphologies can be obtained. Comparative studies on CBZ-loaded CSMS with hexagonal prism (HP) and spherical shapes reveal better drug delivery efficiency and cellular uptake of CSMS with HP morphology. These unique materials can serve as an excellent drug delivery system and have potential applications for cancer treatment.
Article
Chemistry, Physical
Hajar Yousefzadeh, Abolhassan Noori, Mohammad S. Rahmanifar, Nasim Hassani, Mehdi Neek-Amal, Maher F. El-Kady, Ajayan Vinu, Richard B. Kaner, Mir F. Mousavi
Summary: The researchers have successfully achieved a stable and dendrite-free zinc anode by encapsulating it with a chitosan-containing polymer gel, addressing the issue of sustained water consumption in aqueous zinc batteries. Additionally, they have developed a binder-free cathode material with high specific capacity, specific energy, and specific power, along with prolonged cycling stability and stable discharge depth. This interface engineering strategy provides a solid foundation for the practical applications of aqueous zinc batteries.
ADVANCED ENERGY MATERIALS
(2023)
Editorial Material
Chemistry, Physical
Katsuhiko Ariga, Rawil Fakhrullin
Article
Chemistry, Physical
Pragati A. Shinde, Nilesh R. Chodankar, Hyung-Jin Kim, Mohammad Ali Abdelkareem, Amal Al Ghaferi, Young-Kyu Han, Abdul Ghani Olabi, Katsuhiko Ariga
Summary: This study presents a dual-phase 1T-2H WS2 heterostructure by combining two different phases directly on the current collector. The resulting material exhibits a transformable phase structure, large interlayer distance, and highly exposed edge-active sites, demonstrating exceptional ion intercalation performance. The hybrid supercapacitor cell assembled with this heterostructure shows high specific energy and cycling stability.
ACS ENERGY LETTERS
(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)
