Review
Chemistry, Multidisciplinary
Majid Vafaeezadeh, Werner R. Thiel
Summary: This article provides an overview of the broad applications of periodic mesoporous organosilicas (PMOs) in various research fields such as chemistry and material science. By choosing suitable organic groups, the surface properties of PMOs can be tuned. The review also discusses four leading areas of PMO nanomaterials and their potential applications for future developments.
CHEMISTRY-A EUROPEAN JOURNAL
(2023)
Article
Chemistry, Physical
Amir Hasanzadeh, Behnam Gholipour, Sadegh Rostamnia, Aziz Eftekhari, Asghar Tanomand, Ali K. Valizadeh, Samad Khaksar, Rovshan Khalilov
Summary: Nano-size silver particles stabilized on urea-based periodic mesoporous organosilica, using Euphorbia leaf extract as a green reducing agent; physical and chemical properties of organosilica materials analyzed through various techniques; promising biocompatibility and antibacterial effects of designed material demonstrated through in vitro cytotoxicity test.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2021)
Article
Chemistry, Inorganic & Nuclear
Minoru Waki, Shinji Inagaki
Summary: A new periodic mesoporous organosilica with unique structure and high adsorption efficiency for catechols has been successfully synthesized.
INORGANIC CHEMISTRY FRONTIERS
(2022)
Article
Chemistry, Multidisciplinary
Majid Vafaeezadeh, Kristin Weber, Anna Demchenko, Philipp Losch, Paul Breuninger, Andrea Losch, Michael Kopnarski, Sergiy Antonyuk, Wolfgang Kleist, Werner R. Thiel
Summary: A new method for synthesizing a Janus periodic mesoporous organosilica material (JPMO) is introduced, where the material is capable of forming stable Pickering emulsions. This bifunctional material may find widespread applications in various fields related to material science and catalysis.
CHEMICAL COMMUNICATIONS
(2021)
Article
Chemistry, Physical
Xavier Cattoen, Stephanie Kodjikian, Philippe Trens
Summary: The synthesis of various periodic mesoporous organosilica nanoparticles (nanoPMOs) from organo-bridged bis(triethoxy)silanes is described. The influence of sodium hydroxide concentration on the size and morphology of the nanoparticles is observed. Comparison of the resulting hybrid nanoPMOs reveals significant differences in their adsorption properties towards rhodamine B (RB) and highlights the strong affinity of phenylene PMO with the dye. Additionally, it is found that the phenylene-bridged nanoPMO exhibits higher lipophilicity compared to other studied linkers.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2023)
Article
Multidisciplinary Sciences
Abeer Beagan, Khalid Alotaibi, Manal Almakhlafi, Wafaa Algarabli, Noouf Alajmi, Manal Alanazi, Hajer Alwaalah, Fatamah Alharbi, Riyadh Alshammari, Abdullah Alswieleh
Summary: The waste effluents of textiles and leather industries, which contain organic dyes as major contaminants, have been found to cause serious health problems. Adsorption techniques using mesoporous silica nanoparticles (MSNs) were investigated for the efficient removal of organic dyes from industrial wastewater. The MSNs were synthesized with selectively generated active inner/external surfaces by incorporating functional groups through co-condensation and post-grafting procedures. The study evaluated different grafting strategies and their effectiveness in removing cationic dye (methylene blue) from contaminated water samples. The results showed that nanomaterials containing sulfonic acid exhibited the highest adsorption performance, with an extraction efficiency of 98%. Increasing the salt concentration in the water samples improved the adsorption efficiency of all the nanomaterials.
JOURNAL OF KING SAUD UNIVERSITY SCIENCE
(2022)
Article
Chemistry, Multidisciplinary
Fangshen Li, Xinyao Feng, Jiaxing Huang, Mo Zhang, Wenmo Liu, Xupu Wang, Rui Zhu, Xun Wang, Pengfei Wang, Bin Yu, Wei Li, Zhen-An Qiao, Xianghui Yu
Summary: Infection diseases like AIDS and COVID-19 pose challenges in creating protective vaccines, but adjuvants play a critical role in inducing strong immune responses. This study demonstrates that periodic mesoporous organosilica (PMO) can act as a multifunctional nanoadjuvant by delivering antigens, prolonging exposure, and activating immune cells. The PMO nanoadjuvant effectively induces potent and durable antibody responses against different virus strains, activates various immune cells, and shapes both humoral and cellular immune responses, making it a promising adjuvant for subunit vaccines against multiple pathogens.
Article
Engineering, Environmental
David Cantador-Fernandez, David Suescum-Morales, Dolores Esquivel, Jose Ramon Jimenez, Jose Maria Fernandez-Rodriguez
Summary: This study investigated the maximum CO2 adsorption capacity of a specific mesoporous organosilica (PMO-Ethane) and found that it outperformed other materials in the literature. Furthermore, the material demonstrated potential for use in reversible multicycle CO2 capture processes. Various mathematical models were used to fit the CO2 adsorption curves, and several characterization techniques were employed to analyze the material's properties. These findings contribute to the development and application of new materials in greenhouse gas capture technologies.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Materials Science, Multidisciplinary
Mirtha A. O. Lourenco, Paula Ferreira, Jose R. B. Gomes
Summary: The study using density functional theory revealed that periodic mesoporous organosilicas have potential for selective CO2 adsorption due to stronger interactions with CO2 compared to CH4. Materials with phenylene moieties showed more favorable contacts with CO2, and the presence of bipyridine-bridges improved CO2 adsorption behavior when mixed with biphenylene moieties. The adsorption strength of CO2 gas was found to increase with a decrease in the SiOH ●●● OCO distance.
MATERIALS TODAY COMMUNICATIONS
(2021)
Article
Environmental Sciences
Kokila Thirupathi, Subramani Rajesh, Santhamoorthy Madhappan, Lalitha Gnanasekaran, Loganathan Guganathan, Thi Tuong Vy Phan, Seong-Cheol Kim
Summary: The incorporation of active functional groups into the mesoporous organosilica hybrid materials is efficient for various applications. In this study, a newly designed mesoporous organosilica adsorbent was prepared using diaminopyridyl groups bridged-(bis-trimethoxy)organosilane (DAPy) precursor by using Pluronic P123 as structure directing template via sol-gel co-condensation method. The synthesized DAPy@MSA NPs showed selective adsorption of Cu2+ ions from the aqueous medium by metal-ligand complex coordination.
ENVIRONMENTAL RESEARCH
(2023)
Article
Multidisciplinary Sciences
Maryam Neysi, Dawood Elhamifar
Summary: A novel magnetic ionic liquid based periodic mesoporous organosilica supported palladium nanocomposite was synthesized and characterized. Its catalytic performance in the Heck reaction was investigated, showing high activity and stability.
SCIENTIFIC REPORTS
(2022)
Article
Biochemistry & Molecular Biology
Paul Kirren, Lucile Barka, Saher Rahmani, Nicolas Bondon, Nicolas Donzel, Philippe Trens, Aurelie Bessiere, Laurence Raehm, Clarence Charnay, Jean-Olivier Durand
Summary: This study describes the development of periodic mesoporous organosilica nanoparticles (PMO NPs) for capturing and storing CO2 in the atmosphere. The synthesized BTEE/aminopyridine or bipyridine PMO NPs showed significant CO2 adsorption performance and could be promising for carbon capture and storage (CCS) applications.
Article
Chemistry, Multidisciplinary
Ye Zhang, Zhengying Gu, Yang Liu, WenLi Hu, Chao Liu, Weikang Shu, Yue Wang, Chengzhong Yu
Summary: A new acid-catalysis method has been developed to effectively achieve postmodification of large-pore mesoporous silica nanoparticles, allowing for controllable organic contents and retained large pore sizes. This strategy can also be applied to postmodification of organosilica precursors with different functions.
Article
Engineering, Chemical
Yunlu Li, Liyuan Li, Hongliang Zhao, Jichang Liu, Kake Zhu
Summary: Researchers have discovered that functionalizing the surface of mesoporous silica MCM-41 can immobilize Ag+ on the material, transforming it from an unselective porous solid into an olefin selective molecular sieve material suitable for liquid phase binary mixture separations. Results show that ionically anchored Ag+ with intact complexation orbitals outperform coordinatively immobilized Ag+ in terms of antileaching property, olefin separation factor, and recyclability. The use of small mesopore size can boost olefin adsorption selectivity by compressing the available space for access of paraffins.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Chemistry, Inorganic & Nuclear
Wanlu Liu, Anna M. Kaczmarek, Pascal Van der Voort, Rik Van Deun
Summary: In this study, three unique organic-inorganic hybrid nanocomposite materials were developed for metal ion and solvent sensing. The results demonstrate the potential application of these materials in environmental and chemical industries.
DALTON TRANSACTIONS
(2022)
Review
Environmental Sciences
Puthiya Veetil Nidheesh, Soliu O. Ganiyu, Carlos A. Martinez-Huitle, Emmanuel Mousset, Hugo Olvera-Vargas, Clement Trellu, Minghua Zhou, Mehmet A. Oturan
Summary: The electro-Fenton (EF) process is an effective electrochemical advanced oxidation process for wastewater treatment, but it has limitations for industrial-scale development. Recent research has focused on improving its effectiveness and relevance by modifying operating parameters, electrode material, reactor configuration, and coupling with other treatment methods. This review evaluates the current state of the EF process, presents the latest advances and emerging applications, and discusses the suitability of different modified or hybrid-EF processes based on their performance.
CRITICAL REVIEWS IN ENVIRONMENTAL SCIENCE AND TECHNOLOGY
(2023)
Review
Chemistry, Physical
Puthiya Veetil Nidheesh, Clement Trellu, Hugo Olvera Vargas, Emmanuel Mousset, Soliu Oladejo Ganiyu, Mehmet A. Oturan
Summary: Combination of electro-Fenton process with other advanced oxidation processes is effective for water and wastewater treatment. These combined processes can enhance the mineralization efficiency and reduce operational cost and toxicity of treated wastewater. However, they also present challenges such as increased side reactions and energy requirements.
CURRENT OPINION IN ELECTROCHEMISTRY
(2023)
Article
Chemistry, Physical
Charlotte Croise, Khaled Alabd, Sophie Tence, Etienne Gaudin, Antoine Villesuzanne, Xavier Courtois, Nicolas Bion, Fabien Can
Summary: This study investigates the influence of rare-earth (R) element in Ru/RScSi electride-like intermetallic catalysts for ammonia synthesis under mild conditions. The catalytic performances follow the lanthanides series and appear correlated with the formation of the hydride phase. Ru-1.7/CeScSi shows remarkable catalytic activity associated with its reversible hydrogen storage-release properties. It is suggested that NHX formation could be the rate determining step rather than the N-2 cleavage over these catalysts.
Article
Engineering, Environmental
Muhammad Arslan, Soliu O. Ganiyu, Dustin M. E. Lillico, James L. Stafford, Mohamed Gamal El-Din
Summary: The fate of dissolved organics and sulfate ions in fixed bed biofilters (FBBs) treating pre-treated oil sands process water (OSPW) in the presence of petroleum coke (PC) and sand was studied. Pre-treatment using solar-activated sulfate radical advanced oxidation process (SR-AOP) achieved excellent degradation of naphthenic acids (NAs) but saw poor removal of dissolved organics and increased toxicity due to byproducts and metabolites. Post-treatment biofiltration improved the mineralization of dissolved organics and NAs and removed residual toxicity, confirming the efficient reclamation of produced water by using advanced oxidation and biofiltration approaches.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Applied
Maxime Delporte, Helena Kaper, Fabien Can, Nicolas Bion, Xavier Courtois
Summary: The use of expensive precious metal based catalysts has shown promise for catalytic treatment of residual refractory methane in the exhaust gas from NGV engines. Recent research has found that combining a perovskite with a Pd/YSZ catalyst improves both oxygen exchange behavior and methane oxidation. This study aims to investigate the concept of this dual catalytic bed system under more realistic conditions, and found that the configuration promoted CH4 abatement in lean mixture but was inhibited by CO2 and H2O.
TOPICS IN CATALYSIS
(2023)
Article
Food Science & Technology
Sofia F. Reis, Vitor J. Martins, Rita Bastos, Tania Lima, Viviana G. Correia, Benedita A. Pinheiro, Lisete M. Silva, Angelina S. Palma, Paula Ferreira, Manuel Vilanova, Manuel A. Coimbra, Elisabete Coelho
Summary: This study aims to investigate the feasibility of brewer's spent yeast (BSY) microcapsules as oral carriers for food and biomedical applications. The results demonstrate that BSY microcapsules have strong resistance to digestion and are rich in (beta 1 -> 3)-glucans, which can be recognized by the human Dectin-1 immune receptor. Additionally, the digested material is recognized by various lectins related to (beta 1 -> 3)-glucans, glycogen, and mannans.
Article
Food Science & Technology
Ana S. P. Moreira, Joana Goncalves, Francisco Sousa, Ines Maia, Hugo Pereira, Joana Silva, Manuel A. Coimbra, Paula Ferreira, Claudia Nunes
Summary: In this study, coccolithophore microalgae were incorporated as fillers in starch-based films to develop biodegradable and bioactive materials for food packaging. The introduction of microalgae biomass improved the flexibility and hydrophobicity of the films. Additionally, the films exhibited antioxidant activity, which was not observed with commercial fillers.
Article
Chemistry, Physical
Charlotte Croise, Khaled Alabd, Antoine Villesuzanne, Fabien Can, Xavier Courtois, Etienne Gaudin, Sophie Tence, Nicolas Bion
Summary: Ru/LaScSi and Ru/CeTiGe were found to be the most active catalysts for ammonia synthesis, with Ru/LaScSi exhibiting electride-like properties and Ru/CeTiGe following an associative mechanism with the assistance of absorbed H. This conclusion was drawn through a combination of DFT calculations and 15N/14N homomolecular exchange experiments.
CATALYSIS COMMUNICATIONS
(2023)
Article
Chemistry, Applied
Olena Vozniuk, Thomas Cacciaguerra, Nathalie Tanchoux, Stefania Albonetti, Lorenzo Stievano, Jean-Marc M. Millet, Nicolas Bion, Francesco Di Renzo, Fabrizio Cavani
Summary: Copper-manganese spinel ferrites were evaluated as solid oxygen carriers for hydrogen production from water. The nature of the oxygen carrier phases greatly affected the amount and purity of hydrogen produced. Cu-rich ferrites were reduced to metallic copper and iron carbides, while Mn-rich ferrites were less deeply reduced to manganowustite. The oxidation reactions of ethanol by Cu-ferrites mainly produced CO and CO2, while Mn-ferrites mainly formed oxydehydrogenation products. The production of CO and CO2 during the reoxidation negatively affected the purity of the hydrogen formed.
Article
Chemistry, Physical
Remy Pointecouteau, Pierre Florian, Vincent Rodriguez, Nicolas Bion, Alain Demourgues
Summary: Cerium-based complex oxides are important materials for various applications in heterogeneous catalysis and electrocatalysis. The influence of structural defects on the thermal stability of the surface is still not fully understood. By using La-139 NMR and Raman spectroscopy, the lanthanum environments and associated defects in cerium-based compounds were analyzed. An unusual isolated La pseudo-cubic site was found to exist, and when thermally stable, it maintains a high specific surface area for catalytic applications at high temperatures.
JOURNAL OF PHYSICAL CHEMISTRY C
(2023)
Article
Materials Science, Multidisciplinary
Mariana R. F. Silva, Manuel F. R. P. Alves, Joao P. G. Q. Cunha, Joao L. Costa, Cristina A. Silva, Maria H. V. Fernandes, Paula M. Vilarinho, Paula Ferreira
Summary: UV radiation has negative effects on human health and food, and there is a need for the development of UV-shielding materials. These materials can be used in various applications like packaging, sunscreens, contact lenses, and coatings. The dispersion of UV-absorber into a transparent matrix is a common method, but there are challenges in maintaining transparency.
MATERIALS TODAY PHYSICS
(2023)
Article
Chemistry, Physical
Alexandre Nau, Remy Pointecouteau, Melissandre Richard, Thomas Belin, Fabien Can, Clement Comminges, Nicolas Bion
Summary: Catalytic methane combustion experiments were conducted on YSZ, Pd/YSZ, and Rh/YSZ at temperatures ranging from 200 to 700 degrees Celsius. While Pd/YSZ and Rh/YSZ exhibited similar light-off curves between 200 and 450 degrees Celsius, isotopic exchange experiments using CD4 and 18O2 revealed differences in the activation of reactant molecules for both supported catalysts. The use of C18O2 isotopic gas was found to be more suitable than 18O2 to evaluate the bulk oxygen mobility in YSZ at low temperatures. The exchange of gaseous CO2 with lattice YSZ oxygen atoms, facilitated by surface hydrogen carbonate intermediate species, demonstrated the contribution of YSZ bulk oxygen atoms in Rh/YSZ at low temperatures.
CATALYSIS COMMUNICATIONS
(2023)
Article
Engineering, Chemical
Vitor Duarte Lage, Anthony Le Valant, Nicolas Bion, Fabio Souza Toniolo
Summary: The catalytic conversion of CO2 and H2 into valuable chemicals is a promising alternative to address energy and environmental challenges. In this study, a facile K-Co-Cu-Al catalyst was developed for the selective conversion of CO2 into higher alcohols. By adjusting the Co:Cu ratio, reduction temperature, and reaction conditions, the selectivity and yield of higher alcohols were greatly enhanced.
CHEMICAL ENGINEERING SCIENCE
(2023)
Article
Chemistry, Multidisciplinary
Andre L. A. Marinho, Clement Comminges, Aurelien Habrioux, Stephane Celerier, Nicolas Bion, Claudia Morais
Summary: The electrochemical nitrogen reduction reaction (NRR) is an efficient, eco-friendly, and cost-effective alternative to the Haber-Bosch process for NH3 production. The Ti3C2 MXene has emerged as a promising electrocatalyst for NRR, and the addition of Zif-8 to MXene sheets can control the rate of hydrogen evolution reaction (HER). However, the ammonia produced using Zif-8@Ti3C2 as a cathode material is found to originate from nitrogen atoms in the Zif-8 structure, rather than N-2. These results highlight the importance of understanding the N-2 electroreduction process over N-containing electrocatalysts.
CHEMICAL COMMUNICATIONS
(2023)
Article
Engineering, Chemical
Zelia Alves, Paulo Brites, Nuno M. Ferreira, Goncalo Figueiredo, Gonzalo Otero-Irurueta, Idalina Goncalves, Sonia Mendo, Paula Ferreira, Claudia Nunes
Summary: Extension of food shelf life is driving the development of active packaging materials, and the addition of biochar-ZnO composites to polysaccharide-based films shows promising potential with antibacterial, antioxidant, and conductive properties.
JOURNAL OF FOOD ENGINEERING
(2024)
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)