Article
Chemistry, Physical
Xin Li, Fengwei Zhang, Xu Han, Jun-Hao Wang, Xiaoqin Cui, Peng Xing, Huan Li, Xian-Ming Zhang
Summary: In this work, a partial ligand exchange strategy for immobilizing a catalytically active single palladium site (Pd1/ZIF-8) on the zeolitic imidazolate framework-8 (ZIF-8) is proposed. The one-step synthesis involves reacting Na2PdCl4 with ZIF-8 in a solvent, resulting in the exchange of CI ligands with 2-methylimidazole (2-Melm) of the framework and the anchoring of Pd on the framework. The resulting Pd1/ZIF-8 is characterized and successfully applied in the size-selective semi-hydrogenation of alkynes.
Article
Chemistry, Physical
Yajun Zhao, Lei Ding, Xiaomin Wang, Xinmin Yang, Jianbo He, Baojun Yang, Bainian Wang, Dawei Zhang, Zhiwei Li
Summary: In this study, a unique metal-organic framework yolk-shell catalyst was designed, demonstrating superior ORR and OER performance compared to pure materials, with higher discharge capacity and longer cycle life.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Inorganic & Nuclear
Ning Yang, Linjie Lu, Linhua Zhu, Peiwen Wu, Duanjian Tao, Xiaowei Li, Jiahong Gong, Linlin Chen, Yanhong Chao, Wenshuai Zhu
Summary: The novel PIL HPMo@ZIF-8-PIL shows efficient removal of dibenzothiophene sulfur in model oil under room temperature using hydrogen peroxide as the catalyst and oxidant. It promotes dispersion of catalytically active sites and retains good liquidity and excellent extraction ability of ionic liquids. The successful preservation of porosity increases the probability of contact between the oxidant and active sites, enhancing desulfurization performance.
INORGANIC CHEMISTRY FRONTIERS
(2022)
Article
Chemistry, Multidisciplinary
Shiyuan Zhu, Quanjie Lin, Xiaopeng Huang, Liangji Chen, Lizhen Liu, Zizhu Yao, Shengchang Xiang
Summary: ZIF-8 membranes prepared on polyamide substrates demonstrated successful separation of acetylene/methane and acetylene/carbon dioxide mixtures with separation factors of 12.1 and 1.8 respectively. The separation mechanism for C2H2/CH4 is attributed to acetylene affinity and molecular sieving, while C2H2/CO2 separation is related to thermodynamic factors. This study marks the first successful separation of C2H2 from CH4 and CO2 by MOF membranes.
Article
Chemistry, Multidisciplinary
Chanjong Yu, Young Jae Kim, Jongbum Kim, Kiwon Eum
Summary: The control of structure, shape, and components in metal-organic frameworks is crucial in electrochemical applications. This study successfully controlled the morphology of ZIF-8 through systematic controls of synthesis variables and achieved modulation of adsorption and pore characteristics through partial substitution insertion of a new organic precursor.
Article
Materials Science, Multidisciplinary
Svapnil Kevat, Bhaumik Sutariya, V. N. Lad
Summary: Bimetallic MOFs, such as bimetallic ZIF-8/67, possess advantageous properties for various applications including energy storage and conversion, catalysis, gas separation, and sensing. The desired morphology with precise control over crystal size is crucial for specific applications. Microfluidics-incorporated continuous synthesis of bimetallic ZIF-8/67 offers significant nanocrystallinity, porosity, and surface area, and proves to be a time-efficient approach compared to conventional techniques.
JOURNAL OF MATERIALS SCIENCE
(2023)
Article
Chemistry, Multidisciplinary
Yurun Miao, Dennis T. Lee, Matheus Dorneles de Mello, Mohammed K. Abdel-Rahman, Peter Corkery, J. Anibal Boscoboinik, D. Howard Fairbrother, Michael Tsapatsis
Summary: Gas permeation properties of ZIF-8 membranes can be modified through electron beam irradiation, resulting in significant enhancements in ideal selectivity for both CO2/N-2 and CO2/CH4 with exposure times of less than 1 minute.
CHEMICAL COMMUNICATIONS
(2021)
Article
Materials Science, Multidisciplinary
Ziqi Zhou, Qiaomei Ke, Manni Wu, Ling Zhang, Ke Jiang
Summary: Metal-organic frameworks (MOFs) are efficient carriers for controlled drug delivery due to their large surface area and adjustable pore size. A new approach called Pore Space Partition (PSP) was used to effectively encapsulate and pH-controlled co-delivery of two guest molecules. ZIF-8's pore space was partitioned by encapsulating the large molecule ursolic acid (UA), and the remaining space was filled with the small molecule 5-fluorouracil (5-FU). This approach resulted in a high loading capacity of UA (12.80 wt %) and 5-FU (11.20 wt %) in the 5-FU&UA@ZIF-8. This smart carrier exhibited pH-controlled delivery of UA and surprisingly showed pH-responsive delivery of 5-FU after pore space partition. The co-delivery of 5-FU and UA demonstrated excellent anticancer performance against 4T1 cells.
ACS MATERIALS LETTERS
(2023)
Article
Chemistry, Inorganic & Nuclear
Ting Zhang, Hong Liu, Xu Han, Marti Biset-Peiro, Yunhui Yang, Inhar Imaz, Daniel Maspoch, Bo Yang, Joan Ramon Morante, Jordi Arbiol
Summary: A surface modified ZIF-8-5% catalyst was synthesized by introducing a small proportion of 2,5-dihydroxyterephthalic acid (DOBDC) into ZIF-8, showing improved selectivity (from 56% to 79%) and current density (from -4 mA cm(-2) to -10 mA m(-2)) compared to ZIF-8. Density functional theory (DFT) calculations revealed that the enhanced eCO(2)RR performance on ZIF-8-5% was due to the increased formation of *COOH intermediate resulting from successful DOBDC surface modification. This work provides a new pathway for enhancing the catalytic properties of MOFs through surface modification.
DALTON TRANSACTIONS
(2023)
Article
Chemistry, Multidisciplinary
Yunchuan Pu, Mingang Zhao, Xu Liang, Shaoyu Wang, Hongjian Wang, Ziting Zhu, Yanxiong Ren, Zhiming Zhang, Guangwei He, Dan Zhao, Zhongyi Jiang
Summary: We demonstrate a COF-induced seeding strategy for fabricating MOF membranes, using COF substrate with uniform pore size and abundant functional groups. Charged COF nanosheets were designed to induce the formation of high aspect ratio ZIF-8@COF nanosheet seeds, which could be processed into a compact and uniform seed layer. The resulting ZIF-8 membranes exhibit ultrahigh C3H6/C3H8 separation performance and excellent long-term stability, and this strategy is also applicable to ultrathin ZIF-67 and UiO-66 membranes.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Materials Science, Coatings & Films
Valeryia Kasneryk, Mirjam P. M. Poschmann, Maria Serdechnova, Gleb Dovzhenko, D. C. Florian Wieland, Polina Karlova, Thymoty Naacke, Maksim Starykevich, Carsten Blawert, Norbert Stock, Mikhail L. Zheludkevich
Summary: Plasma electrolytic oxidation (PEO) has been widely used to create corrosion and wear resistant coatings, while metal organic frameworks (MOFs) have gained attention as potential materials for corrosion protection. A novel ZIF-8@PEO coating was synthesized for the first time through controllable recrystallization from PEO to ZIF-8. Varying synthesis parameters allows for preparation of ZIF-8@PEO coatings with different distributions of ZIF-8. Surface smoothing was observed with increasing degree of PEO-to-ZIF-8 rearrangement.
SURFACE & COATINGS TECHNOLOGY
(2022)
Article
Chemistry, Multidisciplinary
Xiao-Gang Yang, Ji-Rui Zhang, Xu-Ke Tian, Jian-Hua Qin, Xin-Ya Zhang, Lu-Fang Ma
Summary: Efficient enzyme immobilization is highly desirable for their recyclability and activity, and Zeolitic imidazolate framework-8 (ZIF-8) has been proved to be an effective platform for enzyme immobilization with its easy preparation and biocompatibility. However, the hydrophobic characteristic of ZIF-8 hinders its further development. This study developed a facile synthesis approach to immobilize pepsin (PEP) on ZIF-8 carrier using Ni2+ ions as an anchor, leading to remarkable catalytic activity for electrochemical oxygen evolution reaction (OER) with an ultralow overpotential.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Applied
Hani Nasser Abdelhamid
Summary: Hydride materials show good performance for hydrogen storage and release, with the addition of benzoic acid and hexamethylenetetramine modulating the synthesis of porous metal organic frameworks. The materials prepared exhibit increased hydrolysis rate of sodium borohydride, with ZIF-8 and ZIF-67 prepared using benzoic acid showing high catalytic performance in terms of efficiency and reaction time.
APPLIED ORGANOMETALLIC CHEMISTRY
(2021)
Article
Pharmacology & Pharmacy
Ventura Castillo Ramos, Cinthia Berenice Garcia Reyes, Guillermo Mangas Garcia, Maria Inmaculada Sampedro Quesada, Fernando Jose Martinez-Checa Barrero, Jacob Josafat Salazar Rabago, Manuel Sanchez Polo
Summary: The use of nanomaterials, specifically Zeolitic Imidazolate Framework-8 (ZIF-8), for controlled drug release has been investigated in this study. The synthesis of CIP/ZIF-8 as a drug carrier and release agent was successfully achieved, and the release profiles were shown to be influenced by the pH of the media. The functionalization of ZIF-8 with magnetic nanoparticles did not affect the drug release behavior. Antimicrobial activity tests revealed that the ZIF-8 system itself has antimicrobial properties and the compounds CIP/ZIF and magnetic CIP/ZIF increased the antimicrobial capacity of pure CIP. This research highlights the potential of the ZIF-8 system as an efficient drug delivery system, especially for diseases characterized by acidification of the cellular environment.
Article
Engineering, Environmental
Finnian Pasanen, Rebecca O. Fuller, Fernando Maya
Summary: Microplastics are a prevalent material that poses risks to the environment and human health. The degradation of plastic waste generates endocrine disrupting phenolic compounds, which is a major concern. Magnetic sorbents have shown effectiveness in removing microplastics, but cost-effective and environmentally friendly magnetic micro/nanomaterials are lacking for integrated and efficient removal of both microplastics and endocrine disrupting phenols from water.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Applied
Alexandre M. Viana, Diana Juliao, Fatima Mirante, Rui G. Faria, Baltazar de Castro, Salete S. Balula, Luis Cunha-Silva
Summary: A novel chloride activation method was developed to enhance the catalytic activity of UiO-66(Zr) and UiO-66(Hf) materials in oxidative desulfurization reactions. The activation treatment significantly improved the catalytic performance of the materials, even after multiple reaction cycles, without structural degradation of the catalyst. This cost-effective method shows promise for efficiently activating catalytic MOF materials and expanding their catalytic applications.
Article
Chemistry, Inorganic & Nuclear
Diana Juliao, Ana C. Gomes, Luis Cunha-Silva, Martyn Pillinger, Isabel S. Goncalves, Salete S. Balula
Summary: A series of molybdenum complexes were synthesized and studied as catalysts for the desulfurization of sulfur compounds in a simulated diesel fuel. The study found that the type of extraction solvent, especially the use of an ionic liquid, had a significant impact on the reaction efficiency, while the type of axial ligand had a relatively minor effect. Ionic liquid-based catalysts showed good reusability.
JOURNAL OF ORGANOMETALLIC CHEMISTRY
(2022)
Article
Biochemistry & Molecular Biology
Dinis F. Silva, Alexandre M. Viana, Isabel Santos-Vieira, Salete S. Balula, Luis Cunha-Silva
Summary: An effective and sustainable process capable of simultaneously desulfurizing and denitrogenating fuels is essential in the refinery industry. A novel heterogeneous catalyst was developed using imidazolium-based polyoxometalate encapsulated in a ZIF-8 framework, exhibiting exceptional efficiency in removing sulfur and nitrogen compounds from multicomponent model fuels.
Article
Chemistry, Physical
Simone Fernandes, Fatima Mirante, Baltazar de Castro, Carlos M. Granadeiro, Salete S. Balula
Summary: This study investigated the correlation between polyoxotungstate structures and their catalytic performance in oxidative desulfurization processes. Results showed that the Lindqvist catalyst achieved faster desulfurization with lesser amount of catalyst and oxidant. The reusability of the Lindqvist-type catalyst was also confirmed for consecutive oxidative desulfurization processes.
Article
Green & Sustainable Science & Technology
Marta Lara-Serrano, Silvia Morales-delaRosa, Jose M. Campos-Martin, Victor K. Abdelkader-Fernandez, Luis Cunha-Silva, Salete S. Balula
Summary: The direct conversion of glucose to HMF was studied using MOF as catalysts and POM as a co-catalyst. Two routes were investigated and it was found that the reactions with MIL-53(Al) and MIL-101(Cr) catalysts produced the highest yield of HMF. Stability tests on the POM@MOF catalysts showed that MIL-53(Al) and Hsiw@ MIL-101(Cr) can be reused but with a progressive loss in HMF yield.
ADVANCED SUSTAINABLE SYSTEMS
(2022)
Article
Chemistry, Applied
Manas Sutradhar, Guilherme Marques, Mohamed M. A. Soliman, M. Fatima C. Guedes da Silva, Daniela S. S. Flores, Carlos M. Granadeiro, Salete S. Balula, Armando J. L. Pombeiro, Elisabete C. B. A. Alegria
Summary: In this study, two vanadium(V) complexes were synthesized and immobilized for the oxidation of toluene. The effects of various parameters on the reaction were investigated, and high product yields were achieved under optimized conditions.
MICROPOROUS AND MESOPOROUS MATERIALS
(2022)
Article
Biochemistry & Molecular Biology
Diana Juliao, Fatima Mirante, Salete S. Balula
Summary: This work presents an efficient and fast method for valorizing glycerol, the main waste from the biodiesel industry. The acetalization of glycerol with acetone is an effective strategy to produce solketal, a valuable fuel additive component. The catalytic efficiency of different commercial heteropolyacids (HPAs) was compared and it was found that HPAs demonstrated high efficiency and selectivity under sustainable conditions.
Article
Chemistry, Multidisciplinary
Simone Fernandes, Daniela Flores, Daniel Silva, Isabel Santos-Vieira, Fatima Mirante, Carlos M. Granadeiro, Salete S. Balula
Summary: An effective and sustainable oxidative desulfurization process was developed using a composite material (EuW10@ZIF-8) as a heterogeneous catalyst. The composite exhibited remarkable desulfurization performance and excellent stability during multiple cycles.
Article
Chemistry, Multidisciplinary
Mohamed M. A. Soliman, Carlos M. M. Granadeiro, Salete S. S. Balula, Armando J. L. Pombeiro, Kamran T. T. Mahmudov, Elisabete C. B. A. Alegria
Summary: In this study, two aquasoluble Fe-III complexes (Fe1 and Fe2) were incorporated into amine-functionalized SBA-15 support, and the resulting composites (Fe1@aptesSBA-15 and Fe2@aptesSBA-15) were used as heterogeneous catalysts for the conversion of furfuryl alcohol. The successful preparation of the composites was confirmed by various characterization methods. The catalysts showed high activity and recyclability for the conversion reaction under mild conditions.
Article
Chemistry, Physical
Alexandre M. Viana, Francisca Leonardes, Marta C. Corvo, Salete S. Balula, Luis Cunha-Silva
Summary: A successful encapsulation of Keggin-type polyoxomolybdate (PMo12) into metal-organic framework (MOF) materials with ZIF-8 and ZIF-67 was achieved, resulting in a remarkable increase in catalytic activity for oxidative desulfurization. The presence of Zn2+ in PMo12@ZIF-8 played a vital role in achieving the high catalytic performance. Interestingly, the composite with Keggin-type polyoxotungstate (PW12) did not show comparable catalytic activity.
Article
Biochemistry & Molecular Biology
Daniela Flores, C. Marisa R. Almeida, Carlos R. Gomes, Salete S. Balula, Carlos M. Granadeiro
Summary: The adsorption performance of mesoporous silica-based materials for inorganic and organic water pollutants was investigated. Different properties of the materials were tailored and characterized, and their influence on the removal of metal ions and organic dyes from aqueous solutions was explored. The results show that nanosized mesoporous silica nanoparticles with high surface area have a favorable adsorptive capacity for both types of water pollutants.
Article
Chemistry, Physical
Fatima Mirante, Pedro Leo, Catarina N. Dias, Luis Cunha-Silva, Salete S. Balula
Summary: This study introduces the use of MOF-808(Hf) as a heterogeneous catalyst for the valorization of glycerol, successfully converting it into solketal. MOF-808(Hf) exhibits high efficiency and the ability to be reused, making it a sustainable catalyst for glycerol valorization.
Article
Chemistry, Physical
Yan Gao, Carlos M. Granadeiro, Luis Cunha-Silva, Jianshe Zhao, Salete S. Balula
Summary: In this study, the highly active peroxomolybdate (PMo4) was incorporated into various porous MOF support structures to form heterogeneous catalysts for the oxidative desulfurization of model diesel. The catalytic efficiency of the PMo4@MOF catalysts was significantly influenced by the size of the window entrance and pore dimension from the MOF support. PMo4@MIL-101 showed the highest catalytic efficiency, followed by PMo4@MOF-808 and PMo4@ZIF-8. PMo4@MIL-101 also demonstrated remarkable recycle capacity and structural stability. The appropriate window and pore size cavities from MIL-101 support were found to be the most suitable for organosulfur oxidation.
CATALYSIS SCIENCE & TECHNOLOGY
(2023)
Article
Chemistry, Inorganic & Nuclear
Victor K. Abdelkader-Fernandez, Diana M. Fernandes, Salete S. Balula, Luis Cunha-Silva, Manuel J. Perez-Mendoza, Cristina Freire
Summary: A new nanocomposite PW11Co@ZIF-67 has been synthesized using an in situ strategy, which has individually confined POM units, induced structural defects, and charge transfer. Derivatives obtained from thermal treatment show a carbonaceous nature with complex nanoparticles composed of various species. Among them, D500 exhibits the best intrinsic electrochemistry.
DALTON TRANSACTIONS
(2022)
Article
Chemistry, Physical
Fatima Mirante, Maryam Salimian, Paula A. A. P. Marques, Carlos M. Granadeiro, Salete S. Balula
Summary: Electrospun nanofiber mats made of polymeric P(VDF-TrFE) and catalytically active ionic liquid-polyoxomolybdate were prepared and used as heterogeneous catalysts for efficient removal of sulfur and nitrogen compounds from fuels. The catalyst showed high activity in sulfur and nitrogen oxidation and adsorption of oxidized products. It achieved complete desulfurization in 2 hours and near complete simultaneous desulfurization and denitrogenation in 4 hours, while maintaining stability and activity for multiple cycles.
SUSTAINABLE ENERGY & FUELS
(2022)
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)
