Article
Chemistry, Physical
Tao Wang, Zhanjun Chen, Deliang Chen, Ruirui Zhao
Summary: A novel porous MnO-SiOx @C composite with a mesoporous structure and carbon coating has been successfully prepared as an anode material for lithium-ion batteries. The enhanced electrochemical performance is attributed to the segregation of MnO and SiOx during delithiation, the presence of uniform carbon layers and abundant nanopores, and the formation of Mn2SiO4 phase as a joint to relieve strain force.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Multidisciplinary
Olga A. Bulavchenko, Tatyana N. Afonasenko, Alexey R. Osipov, Alena A. Pochtar, Andrey A. Saraev, Zahar S. Vinokurov, Evgeny Yu Gerasimov, Sergey Tsybulya
Summary: The study of Mn-Ce oxide catalysts active in CO oxidation revealed that the catalyst containing ca. 50 at.% Mn exhibited the best catalytic performance due to high specific surface area, formation of solid solution, and maximum content of the solid solution.
Article
Energy & Fuels
Mohammad Ashourdan, Abolfazl Semnani, Foroozan Hasanpour, Seyyed Ebrahim Moosavifard
Summary: Transition metal oxides show promise for energy storage due to their redox reactions and stability. CuMnO2 nanocrystals and CuMnO2/GQD composite were synthesized and used in a new supercapacitor, with GQD improving specific capacity and efficiency. The CuMnO2/GQD nanocomposite showed higher stability and capacity retention after 5000 charge/discharge cycles compared to CuMnO2 nanoparticles.
JOURNAL OF ENERGY STORAGE
(2021)
Article
Chemistry, Physical
Justin Raj, Ramu Manikandan, Periyasamy Sivakumar, David O. Opar, A. Dennyson Savariraj, Won-Je Cho, Hyun Jung, Byung Chul Kim
Summary: The study found that the substitution of Na+ ions in the K sites of delta-MnO2 significantly affects the electrochemical properties of the electrode. Additionally, tests conducted at low specific currents also showed a decrease in the initial capacitance value of the electrode.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Materials Science, Multidisciplinary
Zhehan Yu, Shilei Zhu, Lihua Zhang, Seiichi Watanabe
Summary: We report a facile one-step method to fabricate mesoporous single crystal ellipsoidal TiO2 micro particles with oxygen vacancies. The synthesized TiO2 microparticles have anatase phase, meso pores, single crystal structure, and Ti (III) component. The e-TiO2 exhibits a bandgap of 2.4 eV, lower than typical anatase materials (3.2 eV). Compared to commercial P25-TiO2, our e-TiO2 shows better adsorption of Rhodamine B and high efficiency for its photodegradation under visible light illumination, with a kinetic constant four times higher than that of P25-TiO2.
Article
Chemistry, Physical
Rui Xu, Junjie Xiong, Dan Liu, Yingru Wang, Yin-an Ming
Summary: Ordered mesoporous manganese oxides (MnOx) were synthesized and investigated as catalysts for the activation of peroxymonosulfate (PMS) to degrade tetracycline hydrochloride (TCH). The catalytic activity of MnOx was enhanced at a calcination temperature of 350°C, resulting in a degradation efficiency of 87.89% for TCH in 180 min. Appropriate dosages of catalyst and PMS improved the degradation efficiency of TCH and the system showed applicability over a wide pH range (3-9). Coexisting ions and humic acid did not significantly affect the degradation efficiency of TCH, which remained above 80%. The system was found to activate PMS to produce three types of free radicals: SO4.-, .OH and O-1(2). The results suggest that MM-3 is a promising catalyst for the degradation of TCH in practical wastewater treatment.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Chemistry, Physical
Aijuan Xie, Haoye Wang, Zerui Zhu, Wanqi Zhang, Xiang Li, Qing Wang, Shiping Luo
Summary: The mesoporous CeO2-alpha-MnO2-rGO prepared by hydrothermal method showed excellent electrochemical performance, with high specific capacitance, energy density, and power density, as well as ultrahigh cycle stability, making it a suitable electrode material for supercapacitors.
SURFACES AND INTERFACES
(2021)
Article
Nanoscience & Nanotechnology
Young Jin Sa, Sohee Kim, Yesol Lee, Ji Man Kim, Sang Hoon Joo
Summary: In this study, four different mesoporous manganese oxides were synthesized and used as model catalysts to investigate the effects of local structures and Mn valence states on the activity of oxygen electrocatalysis. The results showed that for the oxygen reduction reaction, m-Mn2O3 exhibited the highest activity, followed by m-MnO2, m-MnO, and m-Mn3O4. For the oxygen evolution reaction, m-MnO2 showed the highest activity, followed by m-Mn2O3, while m-MnO and m-Mn3O4 had lower activity. These findings suggest that high-valent Mn species and disordered atomic arrangements induced by nanostructuring significantly affect electrocatalysis.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Multidisciplinary
Ji Ping Zhu, Xue Feng Wu, Xiao Hua Yang, Peng Fei Liu, Sheng Dai, Hua Gui Yang
Summary: Mesoporous single crystals, specifically MSC SrTiO3, were synthesized successfully without a template using low-valent Ti3+ precursors. The material exhibited a large BET surface area, average pore diameter, and abundant oxygen vacancies. A hypothetical crystal growth mechanism was proposed based on time-dependent structural and morphological characterizations.
Article
Chemistry, Physical
Olga A. Bulavchenko, Tatyana N. Afonasenko, Alexey R. Osipov, Alena A. Pochtar, Andrey A. Saraev, Evgeny Yu. Gerasimov
Summary: A series of Mn-Ce oxide catalysts with different annealing conditions were synthesized and characterized, showing that catalysts annealed in air exhibited higher activity in CO oxidation reaction compared to those prepared in argon. The combination of MnxCe1-xO2-delta solid solution, amorphous and crystalline manganese oxides, as well as Mn cations in the form of Mn2+, Mn3+ and Mn4+ on the catalyst surface contribute to the catalytic performance.
Article
Biochemistry & Molecular Biology
Hersandy Dayu Kusuma, Imam Rochmadi, Imam Prasetyo, Teguh Ariyanto
Summary: This study focuses on modifying lignin with surfactants to produce carbon materials with different morphological characteristics, including lignin-derived carbon and manganese oxide/lignin-derived carbon. The research successfully developed a method to improve lignin, resulting in carbon materials with high specific surface area and specific capacitance.
Article
Chemistry, Applied
Hai Wang, Qingsong Luo, Liang Wang, Yu Hui, Yucai Qin, Lijuan Song, Feng-Shou Xiao
Summary: The performance of heterogeneous catalysts can be tuned by changing catalyst structures. Manganese oxide catalysts can prevent the hydration side reaction during nitrile synthesis, and their selectivity is influenced by their crystalline nature.
CHINESE JOURNAL OF CATALYSIS
(2021)
Article
Materials Science, Multidisciplinary
Beom-Sik Kim, Youna Park, Kannapu Hari Prasad Reddy, Young-Kwon Park
Summary: Mesoporous MnOx/gamma-Al2O3 (MA) catalysts were synthesized using two different manganese precursors, and the catalyst prepared with the acetate precursor showed higher catalytic performance in the decomposition of methyl ethyl ketone (MEK) and ozone due to its larger surface area and pore volume, as well as better dispersion of MnOx particles.
Article
Chemistry, Physical
Ameera J. Kadhm, Raid A. Ismail, Ahmed F. Atwan
Summary: Nanostructured Mn2O3 films were successfully prepared by rapid thermal oxidation of MnS films. XRD confirmed crystalline Mn2O3 with cubic structure. Film morphology and optical band gap depended on molar concentration, while AFM analysis showed an increase in surface roughness with increasing molar concentration.
Article
Chemistry, Multidisciplinary
Xiuqing Hao, Jiguang Deng, Yuxi Liu, Lin Jing, Jia Wang, Zhiwei Wang, Hongxing Dai
Summary: Manganese-based catalysts, when doped with sodium and combined with platinum and cobalt, exhibit excellent resistance to sulfur dioxide in propane oxidation reactions, while maintaining high catalytic activity. The doping with sodium enhances the catalyst's tolerance to SO2, but inhibits its overall catalytic activity. The Pt1Co1/meso-NaxMnOy catalyst, which consists of well-dispersed Pt and Co atoms on the mesoporous sodium-doped manganese oxide, shows the highest catalytic activity among all the studied samples.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2022)
Article
Chemistry, Multidisciplinary
Ming Chen, Feng-Ming Liu, Shan-Shuai Chen, Rong Wan, Xing Qian, Zhong-Yong Yuan
Summary: A highly stable and active cactus-like Fe2O3/C micro-nano-structure, wrapped with a nitrogen-doped carbon nanotube hybrid (Fe2O3/C@NCNT), was fabricated using a metal-catalyzed graphitization-nitridization driven tip-growth process and an air oxidation induced Kirkendall effect. The Fe2O3/C@NCNT composite exhibits excellent cyclic stability, high reversible capacity, and good rate performance, making it a promising anode material for high energy density Li-ion batteries.
NEW JOURNAL OF CHEMISTRY
(2023)
Review
Chemistry, Physical
Ming-Lei Sun, Zhong-Pan Hu, Hao-Yu Wang, Yu-Jun Suo, Zhong-Yong Yuan
Summary: Propylene, a crucial component for the chemical industry, is facing challenges in its traditional oil-based cracking processes due to changes in the global energy situation. The nonoxidative propane dehydrogenation (PDH) technique has emerged as a promising alternative, offering distinct price advantages. However, the thermally induced deactivation remains a significant issue. This review explores strategies to enhance catalytic stability and recyclability, including active site regulation, metal-support interaction enhancement, and support modification, providing insights into the current status and future prospects of catalyst development.
Review
Chemistry, Physical
Hui Zhao, Zhong-Yong Yuan
Summary: Solar-driven water electrolysis is considered a promising method for producing green hydrogen due to its use of renewable solar energy. This review focuses on the strategies for solar-driven water electrolysis, including PV-water electrolyzer systems, PV-rechargeable energy storage device-water electrolyzer systems, and photoelectrochemical water splitting systems. The review discusses the potential of using organic compounds and seawater in improving the efficiency and practical applications of solar-driven water electrolysis. Recent developments in the field and future challenges and opportunities are also outlined in the review.
ADVANCED ENERGY MATERIALS
(2023)
Article
Nanoscience & Nanotechnology
Hao-Yu Wang, Lei Wang, Jin-Tao Ren, Wen-Wen Tian, Ming-Lei Sun, Zhong-Yong Yuan
Summary: Through electrochemical measurements, characterizations, and density functional theory calculations, we demonstrate the impressive electrocatalytic performance of P/Fe-doped NiSe2 nanosheets for hydrazine-assisted water electrolysis and hydrazine oxidation reaction. The specific effect of P doping on the kinetics of the hydrazine oxidation reaction is investigated, providing insights for rational design of bifunctional electrocatalysts for hydrogen production.
NANO-MICRO LETTERS
(2023)
Review
Chemistry, Multidisciplinary
Xian-Wei Lv, Zhongli Wang, Zhuangzhuang Lai, Yuping Liu, Tianyi Ma, Jianxin Geng, Zhong-Yong Yuan
Summary: This article provides a comprehensive review of recent progress and strategies in the development of rechargeable zinc-air batteries (Re-ZABs). It highlights various approaches to overcome challenges such as zinc dendrites, non-portability, and low cycle performance, and offers insights for future research directions.
Article
Chemistry, Physical
Lei Chen, Jin-Tao Ren, Hao-Yu Wang, Ming-Lei Sun, Zhong-Yong Yuan
Summary: This study presents an efficient oxidative desulfurization method without phase transfer agents and with minimal H2O2 oxidant consumption. By introducing organic modifiers on molybdenum oxides anchored carbon nanotubes, the activation of Mo active sites and capture of H2O2 molecules are achieved. The local hydrophilicity generated in situ by the electron-donating and hydrophilic -OH functional groups ensures high electron density for H2O2 adsorption and sufficient H2O2 supply, leading to efficient ODS reaction at the solid-water-oil three-phase interface.
Article
Chemistry, Physical
Jin-Tao Ren, Lei Chen, Hao-Yu Wang, Wen-Wen Tian, Xin-Lian Song, Qing-Hui Kong, Zhong-Yong Yuan
Summary: In this research, a heterojunction (Ni2P-NiMoOx/NF) was created by coupling crystalline Ni(2)P clusters with an amorphous NiMoOx nanorod support on a nickel foam substrate, which enhances mass/charge transfer, tunes energy barriers, and improves reaction kinetics. The Ni2P-NiMoOx/NF heterojunction exhibits ultralow overpotentials for the hydrogen evolution reaction and superior performance in the oxygen evolution reaction. Besides, it achieves high current densities at low cell voltages and maintains stable electrolysis for a long time under industrial testing.
Review
Chemistry, Inorganic & Nuclear
Hui-Min Yang, Chen-Chen Weng, Hao-Yu Wang, Zhong-Yong Yuan
Summary: This review systematically discusses the recent advances in energy-related electrocatalysis using transition metal nitride (TMN)-based materials, focusing on the critical role of nitrogen in TMN-based materials in electrocatalytic processes. It explains the strategies for enhancing performance, from active sites to electrochemical interfaces, and the corresponding catalytic behavior. The practical applications in water splitting, metal-air batteries, fuel cells, and artificial nitrogen fixation are described, and the scientific challenges, possible opportunities, and future perspectives of TMN-based electrocatalytic materials are proposed.
COORDINATION CHEMISTRY REVIEWS
(2023)
Review
Chemistry, Inorganic & Nuclear
Yi Feng, Lei Chen, Zhong-Yong Yuan
Summary: This review discusses the reaction mechanisms and hurdles for achieving high-efficiency NH3 production and analyzes the principles for constructing superior NOx- reduction catalysts. Recent advances in first-row transition metal-based electrocatalysts, including Cu, Fe, Co, Ni, and Ti-based electrocatalysts, for electrochemical NO3-/NO2- reduction are highlighted. The challenges and opportunities for future studies and applications are also emphasized. This review provides novel perspectives and ideas for developing first-row transition metal-based NOx- reduction electrocatalysts.
INORGANIC CHEMISTRY FRONTIERS
(2023)
Article
Chemistry, Inorganic & Nuclear
Yi Feng, Jin-Tao Ren, Hao-Yu Wang, Lei Wang, Zhong-Yong Yuan
Summary: This study investigates an electrocatalytic NO2- reduction reaction (NO2-RR) that has potential applications in renewable NH3 synthesis and treatment of NO2--contaminated aquatic ecosystems. A core-shell heterostructure of NiFe LDH nanoarrays attached to Co3O4 nanosheets on Ni foam is developed, showing excellent NO2-RR and OER performance. This research provides insights into achieving high-efficiency and low-cost electrocatalytic ammonia production.
INORGANIC CHEMISTRY FRONTIERS
(2023)
Article
Chemistry, Physical
Wen-Wen Tian, Yi-Dai Ying, Jin-Tao Ren, Zhong-Yong Yuan
Summary: This work presents a novel energy system that utilizes only solar energy to produce H-2, overcoming the limitations of intermittent sunlight. A trifunctional Co0.85Se/NC catalysts and a self-powered energy system were constructed to achieve significant H-2 generation. The solar-to-water splitting device and solar-to-H-2 conversion efficiency are 5.36% and 4.34% respectively.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Review
Chemistry, Multidisciplinary
Jin-Tao Ren, Lei Chen, Hao-Yu Wang, Wen-Wen Tian, Zhong-Yong Yuan
Summary: This perspective outlines recent advancements in innovative strategies for improving the energy and economic efficiency of water electrolysis for hydrogen production. These strategies include sacrificial-agent-assisted electrolysis, organic upgrading-assisted electrolysis, self-powered electrolysis systems, and self-catalyzed electrolysis systems. The article emphasizes the importance of designing electrocatalysts using non-noble metals and exploring efficient electrolyzers.
ENERGY & ENVIRONMENTAL SCIENCE
(2023)
Article
Chemistry, Multidisciplinary
Lei Chen, Hao-Yu Wang, Wen-Wen Tian, Lei Wang, Ming-Lei Sun, Jin-Tao Ren, Zhong-Yong Yuan
Summary: This study introduces an internal electric field strategy for the engineering of heterogeneous nickel-vanadium oxide nanosheet arrays as efficient bifunctional electrocatalysts for hydrogen electrocatalysis. The interface internal electric field effect fosters asymmetrical charge distributions, elevating the overall efficiency of hydrogen adsorption and improving the performance of both hydrogen evolution reaction and hydrogen oxidation reaction.
Review
Chemistry, Physical
Hao-Yu Wang, Jin-Tao Ren, Ming-Lei Sun, Wen-Wen Tian, Yi Feng, Zhong-Yong Yuan
Summary: This review provides a comprehensive overview of the development and potential applications of aqueous metal-redox bicatalyst batteries, emphasizing their ability to generate electricity and valuable chemical products. The authors discuss recent efforts to optimize various cathodic discharging reactions and provide insights into design principles, mechanism explorations, and feasibility analyses. The review also highlights future research directions and opportunities.
ADVANCED ENERGY MATERIALS
(2023)
Review
Chemistry, Physical
Yanmei Feng, Daimei Chen, Min Niu, Yi Zhong, Hao Ding, Yingmo Hu, Xiangfeng Wu, Zhongyong Yuan
Summary: Metal halide perovskite (MHP) materials have attracted significant interest in energy conversion and storage due to their tunable band gap, high light collection efficiency, high photogenerated carrier mobility, and high defect tolerance. This review highlights the recent progress of MHPs, including their physical and chemical properties, synthesis approaches, and applications in photocatalysis. The photocatalytic applications of MHPs focus on hydrogen evolution, CO2 reduction, organic pollutant removal, and organic synthesis reactions. Comprehensive design strategies are required for high-activity, selectivity, and stability photocatalysts in solar-driven applications. The challenges and potential development opportunities associated with MHPs are also discussed.
JOURNAL OF MATERIALS CHEMISTRY A
(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)
