Article
Chemistry, Multidisciplinary
Wiktoria Dubiel, Andrzej Kowalczyk, Aleksandra Jankowska, Marek Michalik, Wlodzimierz Mozgawa, Marcin Kobielusz, Wojciech Macyk, Lucjan Chmielarz
Summary: The spherical Ti-MCM-41, synthesized by the co-condensation method, showed promising activity in catalytic and photocatalytic oxidation reactions. The highly dispersed titanium species in the material significantly enhanced the oxidation reaction of diphenyl sulfide with H2O2, especially under UV irradiation.
GREEN PROCESSING AND SYNTHESIS
(2023)
Article
Chemistry, Applied
Huimin Zheng, Zheyuan Tang
Summary: Comprehensive evidence reveals a two-stage adsorption mechanism of dimethyl sulfide (DMS) in HY zeolite at atmosphere temperature, with a changing point at 50 molecules/UC due to the saturation of surface Bronsted acid site HZ with a DMS coordination number of 1.2. Surprisingly, DMS tends to occupy the 12T-window area, potentially playing a key role in selective adsorption and catalysis applications in FAU structure.
MICROPOROUS AND MESOPOROUS MATERIALS
(2021)
Article
Engineering, Environmental
Guillem Vernet, Mohammad-Sadegh Salehi, Pavol Lopatka, Sam K. Wilkinson, Sean K. Bermingham, Rachel Munday, Anne O'Kearney-McMullan, Kevin Leslie, Christopher A. Hone, C. Oliver Kappe
Summary: The study investigated a continuous flow homogeneous Cu-catalyzed aerobic oxidation process, successfully establishing reaction network and kinetic constants through experiments and simulations, ultimately validating the feasibility of the model in experiments.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Chemistry, Physical
Min Chen, Wenqing Hou, Chen Chen, Yechen Wang, Yiming Xu
Summary: This work investigates the photocatalytic activity of zinc cadmium sulfide under different light wavelengths and finds that the optimal x value for the maximum hydrogen evolution rate varies. Furthermore, it is observed that the activity and stability of zinc cadmium sulfide are improved after loading ZnCo2O4.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Chemistry, Applied
G. Maria Egusquiza, M. Dolores Soriano, Mercedes Munoz, Gustavo Romanelli, Jose Soriano, I. Carmen Cabello, M. Jose Lopez Nieto
Summary: Mixed metal oxides were prepared by hydrothermal synthesis from lacunary heteropolytungstates and showed high activity and selectivity in liquid and gas phase catalytic reactions, indicating their potential as efficient catalysts. Catalytic behavior was found to depend on the composition of the catalysts, with Cu(II) species demonstrating excellent performance in both reactions studied.
Article
Chemistry, Applied
Mercedes Munoz, Lufs J. Mendoza-Herrera, Gustavo P. Romanelli, Delia Gazzoli, Carmen I. Cabello
Summary: WOx-ZrO2 (ZWx) based catalysts were prepared with different W contents and characterized for their catalytic performance. The active phases with high selectivity and conversion were identified as polytungstate species strongly interacting with the support.
Article
Chemistry, Multidisciplinary
Yongli Li, Huamin Wang, Heng Zhang, Aiwen Lei
Summary: Dimethyl sulfide-mediated electrochemical synthetic strategy is effective for esterification of amino acids, showing good efficiency and tolerance for peptides and gram-scale synthesis.
CHINESE JOURNAL OF CHEMISTRY
(2021)
Article
Engineering, Chemical
Lidong Wang, Xiaohan Guo, Qingying Ye, Juanjuan Qi, Ping Li, Fei Yan
Summary: Dimethyl sulfoxide (DMSO) is a widely used solvent, but its biodegradation is difficult, resulting in the emission of harmful compounds. In this study, supported niobia catalysts were used to catalyze the oxidative degradation of DMSO using H2O2. The oxidation product, dimethylsulfone, is biodegradable and environmentally friendly. The most active catalyst, 20%Nb2O5/SiO2, showed high efficiency in removing DMSO. After calcination, the catalysts exhibited improved reusability.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2022)
Article
Chemistry, Physical
M. Assis, A. F. Gouveia, L. K. Ribeiro, M. A. Ponce, M. S. Churio, O. N. Oliveira Jr, L. H. Mascaro, E. Longo, R. Llusar, E. Guillamon, J. Andres
Summary: Chemoselective oxidation of sulfides to sulfones has been achieved using metal-based tungstates as catalysts, tolerating a broad range of functional groups. α-Ag2WO4 and NiWO4 were identified as the most efficient and selective catalysts, completing the transformation in 1 and 2 hours, respectively. The success of the selective oxidation is attributed to hydroxyl radical and singlet oxygen as redox mediators.
APPLIED CATALYSIS A-GENERAL
(2023)
Article
Multidisciplinary Sciences
Timothy J. Shaw, George W. Luther, Richard Rosas, Veronique E. Oldham, Nicole R. Coffey, John L. Ferry, Dewamunnage M. C. Dias, Mustafa Yucel, Aubin Thibault de Chanvalon
Summary: Historically, the production of reactive oxygen species (ROS) in the ocean has been attributed to photochemical and biochemical reactions. However, hydrothermal vents emit globally significant inventories of reduced Fe and S species that react rapidly with oxygen in bottom water, serving as a previously unmeasured source of ROS. The Fe-catalyzed oxidation of reduced sulfur species in hydrothermal vent plumes in the deep oceans supports the abiotic formation of ROS at concentrations 20 to 100 times higher than those in surface waters. This plume-generated ROS can alter refractory organic molecules in seawater and potentially affect global ocean carbon inventories.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2021)
Article
Engineering, Environmental
Ting Zhang, Yichan Wen, Zhelun Pan, Yasutaka Kuwahara, Kohsuke Mori, Hiromi Yamashita, Yixin Zhao, Xufang Qian
Summary: Fenton reaction plays important roles in biological and environmental remediation, but the low efficiency of H2O2/Fe(II/III) oxidation under acidic conditions limits its application. The study reveals that carbon quantum dots (CQDs) exhibit a higher H2O2 utilization efficiency and can improve the selectivity of toxic intermediates. Furthermore, the CQDs-Fe(III)/H2O2 process is less affected by inorganic ions and dissolved organic matter (DOM) in groundwater.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2022)
Article
Chemistry, Multidisciplinary
Yanhong Chen, Haiyan An, Shenzhen Chang, Yanqin Li, Tieqi Xu, Qingshan Zhu, Huiyun Luo, Yaohui Huang, Yuting Wei
Summary: In this study, two porous polyoxometalate-pillared metal-organic frameworks were designed and utilized as heterogeneous catalysts for the conversion of sulfides into high-value sulfoxides. Structural analysis revealed that one of the frameworks exhibited higher activity, which could be attributed to its larger channels that provide more active sites and facilitate more efficient mass transfer processes.
CHINESE CHEMICAL LETTERS
(2023)
Article
Engineering, Environmental
Zhao Shu, Jiali Wang, Hong Liu, Chunguang Liu
Summary: This study shows that bromide (Br- ) can enhance the degradation of sulfamerazine (SMR) by horseradish peroxidase (HRP), mainly through oxidation and substitution processes. The transformation pathways of SMR involve hydrolysis and breaking up of sulfonamide bond to generate small fragments, as well as demethylation, Smile rearrangement, and bromine substitution to form other products. The degradation products and bromate formed during the process do not inhibit bacteria growth, suggesting no significant environmental risk.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Physical
Alex Stenner, Richard J. Lewis, Joseph Brehm, Tian Qin, Angeles Lopez-Martin, David J. Morgan, Thomas E. Davies, Liwei Chen, Xi Liu, Graham J. Hutchings
Summary: This study demonstrates that the introduction of dopant concentrations of Pt into supported AuPd nanoparticles, when used with an evolved unspecific peroxygenase (UPO) from Agrocybe aegerita (PaDa-I), offers high efficacy for the selective oxidation of cyclohexane to KA oil (cyclohexanol and cyclohexanone) via in-situ synthesis of H2O2. The optimized AuPdPt/TiO2/PaDa-I system shows significant improvements over analogous AuPd or Pd-only formulations or the use of commercially available H2O2, attributed to the increased rate of H2O2 production by the chemo-catalyst resulting from electronic modification of Pd species through Pt incorporation upon the formation of trimetallic nanoalloys.
Article
Chemistry, Inorganic & Nuclear
Jiang-Zhen Qiu, Long-Fei Wang, Xu-Gang Shu, Cui-Jin Li, Zhongke Yuan, Jiuxing Jiang
Summary: ZHKU-1, a new two-dimensional layer with a template of alkylated memantine, was synthesized and used for encapsulating highly uniform silver clusters, exhibiting remarkable catalytic activity.
INORGANIC CHEMISTRY FRONTIERS
(2022)
Article
Chemistry, Physical
Chang Cheng, Bicheng Zhu, Bei Cheng, Wojciech Macyk, Linxi Wang, Jiaguo Yu
Summary: This study constructed a series of pyrene-alt-dibenzothiophene-S,S-dioxide (P16PySO)/tungsten trioxide (WO3) composites to investigate the mechanism of photocatalytic styrene oxidation under anaerobic and aerobic conditions. The S-scheme charge transfer pathway within P16PySO/WO3 was systematically analyzed. The results revealed that triplet oxygen (O-3(2)) could efficiently trap the energy of triplet excited P16PySO through an energy transfer process and convert to singlet oxygen (O-1(2)), which played an important role in styrene oxidation.
Article
Chemistry, Multidisciplinary
Antonio Valverde-Gonzalez, M. Carmen Borrallo-Aniceto, Urbano Diaz, Eva M. Maya, Felipe Gandara, Felix Sanchez, Marta Iglesias
Summary: Studies have shown that tetrazole-based nitrogen-rich naphthalene cobalt-MOFs exhibit good catalytic activity and adsorption performance in the epoxidation of alkenes and CO2 cycloaddition reactions. These catalysts possess Lewis acid and redox functionalities and can simultaneously achieve both reactions through a one-pot tandem process.
JOURNAL OF CO2 UTILIZATION
(2023)
Article
Chemistry, Multidisciplinary
Anna Jakiminska, Kaja Spilarewicz, Wojciech Macyk
Summary: This work aims to revise the photocatalytic activity mechanism of the TiO2/Ag2O system in photocatalytic water splitting with methanol photoreforming. The transformation of Ag2O into AgNPs during photocatalytic water splitting/methanol photoreforming was studied using various techniques. The influence of AgNPs on the optoelectronic properties of TiO2 was analyzed, and the lack of efficient p-n junction between TiO2 and Ag2O was observed. Furthermore, the impact of chemical and structural changes on the production of CO and CO2 from methanol photoreforming was investigated.
NANOSCALE ADVANCES
(2023)
Article
Biochemistry & Molecular Biology
Joanna Klara, Sylwia Onak, Andrzej Kowalczyk, Wojciech Horak, Kinga Wojcik, Joanna Lewandowska-Lancucka
Summary: In this study, a novel multifunctional drug delivery system based on hydroxyapatite-decorated mesoporous silica particles (MSP-NH2-HAp-ALN) embedded into a collagen/chitosan/chondroitin sulfate hydrogel was proposed for osteoporosis treatment and bone regeneration. The hydrogel served as a carrier for controlled ALN delivery to limit potential adverse effects. The attachment of MSP-NH2-HAp-ALN to the polymeric matrix prolonged ALN release and minimized the initial burst effect. The composites showed effective osteoconductive properties and inhibitory effects on osteoclast-like cell proliferation, as well as antibacterial activity.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Chemistry, Multidisciplinary
Aleksandra Jankowska, Aleksandra Bobowska, Barbara Gil, Lucjan Chmielarz
Summary: Nanospheres of MCM-41 were modified with copper using template ion-exchange and cocondensation methods. The dispersion of copper was improved by post-treating the samples in ammonia solutions. Highly dispersed copper species showed higher activity in low-temperature NH3-SCR compared to CuO aggregates. Copper dispersed on silica MCM-41 operated at lower temperatures than copper deposited on silica-alumina MCM-41. The reaction mechanism studies revealed that ammonia and NOx species competed for the same adsorption sites (copper cations) and NH3 could remove NOx from these sites.
Article
Green & Sustainable Science & Technology
Kamil Urbanek, Kaja Spilarewicz, Jiaguo Yu, Wojciech Macyk
Summary: This work designed an advanced photocatalytic system composed of titanium dioxide (P25) and mSFO (Sn-doped magnetite with Fe-doped cassiterite) for gas phase CO2 reduction. A synthesis route of mSFO composite was proposed, and the obtained material was characterized by various techniques. The mSFO/P25 system showed photocatalytic reduction ability of CO2 to CO, which was confirmed by the use of labeled carbon dioxide. The surface photovoltage and electrochemical measurements supported the S-scheme mechanism.
MATERIALS TODAY SUSTAINABILITY
(2023)
Article
Chemistry, Physical
Kasidid Yaemsunthorn, Wiktoria Adamowicz, Marcin Kobielusz, Wojciech Macyk
Summary: The photocatalytic selective reduction of 3-nitrophenol to 3-aminophenol was studied using titanium dioxide in different compositions. Both intrinsic and extrinsic parameters were found to affect the reaction progress, with intrinsic factors related to the chemical, structural, and electronic properties and extrinsic factors related to the reaction conditions. The analysis revealed that the performance of anatase and rutile materials varied due to differences in interfacial electron transfer, charge recombination, reduction driving force, and methanol photooxidation efficiency. The understanding of these factors could lead to the rational design of efficient and selective photocatalysts.
Review
Chemistry, Physical
Tetiana Tatarchuk, Liubov Soltys, Wojciech Macyk
Summary: The global development of industry and agriculture has led to the contamination of aquatic environments with pharmaceuticals. The uncontrolled release of pharmaceuticals into water poses a threat to human health and the environment. Adsorption with magnetic nanoparticles is an effective method for removing pharmaceuticals from wastewater. This comprehensive review focuses on the use of magnetic nanoparticles for the removal of antibiotics and nonsteroidal anti-inflammatory drugs from aqueous environments. The study discusses the interaction between the adsorbent and the adsorbate and summarizes the factors that affect adsorption efficiency.
JOURNAL OF MOLECULAR LIQUIDS
(2023)
Article
Biochemistry & Molecular Biology
Agnieszka Szymaszek-Wawryca, Urbano Diaz, Bogdan Samojeden, Monika Motak
Summary: Two series of MCM-36 zeolites with different pillars and iron modifications were synthesized and characterized. A one-pot synthesis method incorporating iron resulted in the incorporation of monomeric Fe3+ species into the framework positions. The catalytic tests showed that the sample with silica and alumina pillars was the most efficient catalyst for NO reduction.
Article
Chemistry, Physical
Aleksandra Pietraszek, Andrzej Kowalczyk, Zofia Piwowarska, Malgorzata Rutkowska, Oliwia Iwaszko, Lucjan Chmielarz
Summary: Mesoporous silica materials of MCM-48 and MCM-41 types were synthesized and modified with copper. The deposition of copper was more dispersed in MCM-48 compared to MCM-41. Treatment with ammonia resulted in deposition of mainly monomeric copper cations, which led to higher catalytic activity in the low-temperature NH3-SCR process. CuO aggregates on mesoporous silicas were active in the side process of direct ammonia oxidation at higher temperatures.
REACTION KINETICS MECHANISMS AND CATALYSIS
(2023)
Article
Chemistry, Physical
Peiyu Hu, Guijie Liang, Bicheng Zhu, Wojciech Macyk, Jiaguo Yu, Feiyan Xu
Summary: Exploring photocatalysts for CO2 conversion is a promising approach for mitigating energy scarcity and environmental pollution. In this study, SnO2/Cs3Bi2Br9 heterojunctions were constructed to enhance CO2 photoreduction. The unique structure enabled efficient separation of photoexcited electron/hole pairs and demonstrated excellent selectivity for CH4 production.
Review
Chemistry, Physical
Roman Dziembaj, Marcin Molenda, Lucjan Chmielarz
Summary: Non-stoichiometric CeO2-y, especially in the form of nanocrystal aggregates, has exceptional catalytic activity in redox reactions. It improves the activity of transition metals and their oxides dispersed on it, and serves as an oxygen buffer. The synthesis methods and deposition techniques for these nanomaterials and their applications in redox reactions are comprehensively reviewed in this article, with over 160 references provided for further details.
Article
Chemistry, Physical
Ying He, Zhengpeng Yang, Jiaguo Yu, Difa Xu, Chengyuan Liu, Yang Pan, Wojciech Macyk, Feiyan Xu
Summary: In this study, WO3/In2O3 S-scheme heterojunction photocatalysts were developed for CO2 photoreduction. The unique S-scheme mechanism and efficient activation of CO2 molecules on the In2O3 surface resulted in enhanced CO2 photoreduction performance with 53.7% selectivity for CH4. Photocatalytic and CO2-reduction mechanisms, as well as the enhanced CH4-selectivity, were elucidated through various spectroscopy techniques and simulations.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Review
Materials Science, Multidisciplinary
Mario Gutierrez, Urbano Diaz, Boiko Cohen, Abderrazzak Douhal
Summary: Metal-organic frameworks (MOFs) have diverse applications in scientific and technological fields. Two-dimensional (2D) MOFs, such as ITQ MOFs, have unique properties and are suitable for gas adsorption/separation, sensing, catalysis, and chemical release. The synthesis, specific catalytic applications, and photophysical properties of 2D-ITQ-MOFs and their composites with luminescent dyes have been extensively studied.
JOURNAL OF MATERIALS CHEMISTRY C
(2023)
Article
Chemistry, Multidisciplinary
Anna Jakiminska, Kaja Spilarewicz, Wojciech Macyk
Summary: This study investigates the influence of plasmonic (gold) and non-plasmonic (palladium) nanostructures on the photocatalytic activity and redox properties of titanium dioxide. The results show that palladium primarily determines the activity of modified materials, while the surface plasmon resonance of gold has no effect on the activity. Moreover, the nanostructures induce changes in the redox properties of the semiconductor, regardless of their plasmonic or non-plasmonic nature.
NANOSCALE ADVANCES
(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)
