Article
Environmental Sciences
Zeinab Ezzeddine, Isabelle Batonneau-Gener, Yannick Pouilloux
Summary: The removal of zinc ions from water was studied using two types of ordered mesoporous silica (SBA-15 and SBA-16). Both materials were modified with APTES and EDTA through post grafting methods. The modified adsorbents were characterized by various analytical techniques, and the structural integrity was maintained. Optimal adsorption conditions and maximum adsorption capacity were determined through experimental tests, and the regenerated adsorbent showed no significant decline in adsorption efficiency.
Article
Chemistry, Physical
Chih-Yu Lin, Chia-Min Yang, Mika Linden
Summary: Mesoporous silica nanoparticles (MSN) are potential drug carriers with high drug loading capacity and degradability under biologically relevant conditions. Dissolution studies of MCM-48 MSN in the presence of proteins show that protein concentration affects the kinetics of dissolution and leads to the formation of core-shell structured particles. The results suggest that MSN dissolution kinetics is faster under typical in vitro conditions compared to full serum conditions.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Biochemistry & Molecular Biology
Misun Kang, Jong-tak Lee, Jae Young Bae
Summary: Formaldehyde emitted from household products is harmful to human health. This study compares the formaldehyde adsorption characteristics of mesoporous and mesoporous hollow silicas synthesized with or without a calcination process. The mesoporous hollow silica synthesized without a calcination process has the best adsorption performance, followed by the mesoporous hollow silica synthesized with a calcination process and mesoporous silica. This research demonstrates the potential of mesoporous hollow silica as an effective support for harmful gas adsorption.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Chemistry, Applied
Jun Lin, Guillaume Toquer, Clara Grygiel, Sandrine Dourdain, Yannick Guari, Cyrielle Rey, Jeremy Causse, Xavier Deschanels
Summary: This study investigates the evolution of the mesoporous structure of two silicas MCM-41 and SBA-15 under a 2 MeV electron beam. The results show that irradiation-induced porosity closure is more effective on smaller pores. This phenomenon could potentially be exploited for RadioNuclides encapsulation.
MICROPOROUS AND MESOPOROUS MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Yuxin Wang, Lin Zhao, Yibo Dai, Miao Xu, Ruilin Zhou, Bingxin Zhou, Kaijun Gou, Rui Zeng, Lu Xu, Heran Li
Summary: This study demonstrates the importance of chirality in the oral adsorption efficiency of nanocarriers. The l-CMSNs, modified with l-tartaric acid, outperformed other chiral and achiral counterparts in sequential processes including mucus permeation, mucosa bio-adhesion, cellular uptake, intestinal transport, and gastrointestinal tract retention. Furthermore, l-CMSN showed stable absorption into the blood, improved intestinal transport for the loaded drug, and enhanced bioavailability and antitumor effect.
ADVANCED MATERIALS
(2023)
Article
Environmental Sciences
Hongji Sang, Cong Mao, Yan Wu, Yuezhou Wei
Summary: A silica-based anion exchange resin was synthesized and used to remove Tc-99 from real radioactive liquid waste, showing good thermal stability and high decontamination efficiency. The study also found that ion exchange reaction was the controlling mechanism in the process, and competitive adsorption of NO3- led to a decrease in K-d after gamma-ray irradiation.
Article
Biochemistry & Molecular Biology
Adrian Szewczyk, Joanna Brzezinska-Rojek, Justyna Osko, Dorota Majda, Magdalena Prokopowicz, Malgorzata Grembecka
Summary: This study investigated the adsorption and desorption of gallic acid (GA), protocatechuic acid (PCA), chlorogenic acid (CGA), and 4-hydroxybenzoic acid (4-HBA) using commercially available mesoporous silica materials (MSMs). The results showed that amine-modified SBA-15 mesoporous silica exhibited the highest adsorption capacity for GA, and the antioxidant capacity of the adsorbed compounds was preserved after desorption.
Article
Chemistry, Multidisciplinary
Rafael Balderas-Xicohtencatl, Hung-Hsuan Lin, Christian Lurz, Luke Daemen, Yongqiang Cheng, Katie Cychosz Struckhoff, Remy Guillet-Nicolas, Gisela Schutz, Thomas Heine, Anibal J. Ramirez-Cuesta, Matthias Thommes, Michael Hirscher
Summary: This study uses high-resolution cryo-adsorption studies and characterization by inelastic neutron scattering vibration spectroscopy to discover that hydrogen adsorbed on well-ordered mesoporous silica forms a super-dense two-dimensional monolayer near its boiling point. The formation of this super-dense phase is rationalized through theoretical studies based on first-principles calculations.
Article
Chemistry, Applied
Muge Sari Yilmaz
Summary: In this study, graphene oxide/hollow mesoporous silica and layered double hydroxide/hollow mesoporous silica composites were synthesized and compared for their adsorption behavior towards different dyes. The graphene oxide/hollow mesoporous silica showed better selectivity and stability in adsorption of methylene blue compared to layered double hydroxide/hollow mesoporous silica.
MICROPOROUS AND MESOPOROUS MATERIALS
(2022)
Article
Engineering, Chemical
Ruihao Tang, Wei Hong, C. Srinivasakannan, Xuelin Liu, Xin Wang, Xinhui Duan
Summary: Fe-doped silica aerogel composite prepared by sol-gel method showed excellent adsorption capacity for malachite green, with well-developed mesoporous network and large specific surface area. This low-cost adsorbent could serve as a promising alternative for wastewater treatment, especially for adsorption of large molecules.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Chemistry, Physical
Jae Seon Baik, Sang A. Kim, Dae-Woong Jung, Weon-Sik Chae, Changhyun Pang, Suk Ho Bhang, Laurent Corte, Gi-Ra Yi
Summary: The adsorption of polymers on the surface of mesoporous silica nanoparticles allows for versatile adhesion between hydrogels or biological tissues. However, when the number of nanoparticles deposited exceeds a critical threshold, thick multilayers form at the interface and decrease the adhesion strength. To overcome this limitation, spherical aggregates were prepared by spray drying, resulting in stronger cohesion between nanoparticles. The adhesion energy with these supraballs was significantly enhanced compared to nanoparticles, and corrugated interfaces stabilized by supraballs contributed to the largest adhesion enhancement.
CHEMISTRY OF MATERIALS
(2022)
Article
Pharmacology & Pharmacy
Khatereh Zarkesh, Reza Heidari, Pooya Iranpour, Negar Azarpira, Fatemeh Ahmadi, Soliman Mohammadi-Samani, Fatemeh Farjadian
Summary: This study successfully synthesized a novel pH-responsive mesoporous silica nanoparticle and achieved targeted drug delivery to cancer cells by coating with hyaluronan. The results showed that the nanoparticles had good biocompatibility and biodegradability, and could improve pharmacokinetic parameters.
JOURNAL OF DRUG DELIVERY SCIENCE AND TECHNOLOGY
(2022)
Article
Chemistry, Applied
Linqing Liang, Jiahong Wang, Yanxin Zhang
Summary: In this study, H2O2 oxidized magnetic mesoporous carbon hollow microspheres (Fe3O4@void@C@H2O2) were synthesized for the removal of Cr(III)-EDTA and Cr(III) from high salinity wastewater. The Fe3O4@void@C@H2O2 showed strong affinity and high stability for Cr(III) and Cr(III)-EDTA, even in high salinity water. The results highlight the great potential of Fe3O4@void@C@H2O2 for the adsorptive removal of Cr (III) and its chelate from high salinity wastewater.
MICROPOROUS AND MESOPOROUS MATERIALS
(2023)
Article
Biochemistry & Molecular Biology
Cristina Carucci, Nicola Scalas, Andrea Porcheddu, Marco Piludu, Maura Monduzzi, Andrea Salis
Summary: Mesoporous silica nanoparticles (MSN) functionalized with triethylenetetramine (MSN-TETA) showed higher adsorption capacity and slower release rate for the antimicrobial drug sulphamethizole (SMZ), indicating the importance of intermolecular interactions in drug delivery systems.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2021)
Article
Engineering, Environmental
Ramesh Natarajan, Swethaa Venkataraman, Devi Sri Rajendran, Bavavarshini Tamilselvam, Hetavi Zaveri, Nagasudhan Jeyachandran, Harshita Prashar, Vinoth Kumar Vaidyanathan
Summary: Magnetic mesoporous silica microspheres (MSMS) were prepared and their ability to remove acetaminophen from water was evaluated. The optimal operating conditions for maximum removal were determined, and different models were used to analyze the adsorption data. The study also found that the MSMS could be reused multiple times.
JOURNAL OF WATER PROCESS ENGINEERING
(2022)
Article
Materials Science, Multidisciplinary
Tariq Ali, Saima Mohyuddin, Ghafar Ali, Muhammad Ibrar, Faiza Summer, Sajid Iqbal, Yi Xie, Muhammad Maqbool
Summary: Self-organized and vertically oriented TiO2 nanotubes (TNTs) were synthesized via anodization of Ti sheet in a glycerol-based used electrolyte. Graphite (Gt) doping in TNTs by physical vapor deposition (PVD) under Ar-atmosphere at 700 degrees C using polyvinyl alcohol (PVA) as a precursor was investigated. The Gt-doped TNTs showed enhanced photocatalytic activity for methyl orange (MO) degradation due to higher absorptivity, better crystallinity, and lower bandgap compared to pristine TNTs.
ELECTRONIC MATERIALS LETTERS
(2022)
Article
Environmental Sciences
Basit Ahmed Khan, Mahtab Ahmad, Sajid Iqbal, Nanthi Bolan, Shumaila Zubair, Munib Ahmed Shafique, Attaullah Shah
Summary: The study demonstrates the potential of engineered biochar derived from pinecone, impregnated with iron and aluminum salts, to effectively remove fluoride ions from water. The AlCl3-modified biochar exhibits enhanced adsorption capacity and can remove fluoride ions even in the presence of competing ions.
ENVIRONMENTAL RESEARCH
(2022)
Article
Environmental Sciences
Sajid Iqbal, Yasir Faiz, Messaoud Harfouche, Muhammad Saifullah, Jong-Il Yun
Summary: This study investigates the effect of sintering temperatures on the inter-conversion of Cr(III/VI) species in the calcium hydroxyapatite (HA) matrix. The results show the gradual transformation of Cr(III) to Cr(VI) oxides with increasing sintering temperatures. This study will help in designing a waste management route to reduce the leaching of Cr(VI) from waste matrix.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH
(2022)
Article
Environmental Sciences
Uswa Zahoor, Muhammad Imran Rameel, Ahad Hussain Javed, Muhammad Abdullah Khan, Jehan Y. Al-Humaidi, Sajid Iqbal, Afrah Mohammed Aldawsari, Afzal Shah
Summary: By constructing yttrium doped BiVO4/TiO2 heterojunction, toxic Cr(VI) was successfully photocatalytically reduced to Cr(III) with a significant improvement in performance compared to pristine BiVO4 and yttrium doped BiVO4. In optimal conditions, the photocatalytic reduction ability of pure BiVO4 (22%) rose to approximate to 99.8% when the Y-BiVO4/TiO2 photocatalyst was used.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH
(2022)
Article
Environmental Sciences
H. Abbas, M. Ahmad, S. Iqbal, A. U. Rajapaksha
Summary: Bio-waste generation is increasing worldwide, and a low-cost conventional pyrolyzer has been evaluated for bio-oil and bio-char production. Sugarcane bagasse showed the highest yields of bio-oil and bio-char among the bio-waste types tested. The bio-oil composition suggests its potential as an alternative transportation fuel, and the bio-char demonstrated safe application in soil improvement.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL SCIENCE AND TECHNOLOGY
(2023)
Article
Environmental Sciences
Basit Ahmed Khan, Mahtab Ahmad, Sajid Iqbal, Fath Ullah, Nanthi Bolan, Zakaria M. Solaiman, Munib Ahmed Shafique, Kadambot H. M. Siddique
Summary: This study investigated the use of pinecone-derived biochar, both pristine and engineered with iron, for remediation of Sb(V)-contaminated water and soil. The results showed that the iron-modified biochar had higher adsorption capacity and successfully immobilized Sb in the treated soil.
ENVIRONMENTAL POLLUTION
(2023)
Article
Chemistry, Inorganic & Nuclear
Seonggyu Choi, Dong Woo Lee, Tae-Hyeong Kim, Sang Ho Lim, Jong-Il Yun
Summary: Spontaneous crystallization of a low-soluble uranium(VI) organic coordination compound with sodium and 2-methoxybenzoate was observed in acidic solutions, and its solubility product, molecular vibrations, crystal structure, thermal stability, and emission properties were fully investigated for the first time. The crystal structure analysis revealed a one-dimensional channel structure with sodium and water molecules, and the compound exhibited stable thermal behavior up to 250 degrees C with subsequent dehydration and release of the organic ligand. The photoluminescence spectrum displayed characteristic U(VI) emission with a determined band spacing. This study contributes to a better understanding of the structural effects of aromatic ligands on U(VI) complexation and the development of diverse uranyl-organic frameworks.
INORGANIC CHEMISTRY
(2023)
Article
Chemistry, Analytical
Sung-Uk Choi, Sol-Chan Han, Jong-Il Yun
Summary: In this study, the in situ detection of neodymium isotopes using tunable diode laser absorption spectroscopy (TDLAS) was investigated. The research successfully measured the absorption spectra of seven neodymium isotopes and demonstrated the feasibility of using a TDLAS-based detection system for isotope analysis in nuclear forensics.
JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY
(2023)
Article
Electrochemistry
Han Lim Cha, Jong-Il Yun
Summary: This study demonstrates the pulsed-potential electrodeposition of reduced Zr species in a molten LiCl-KCl salt. The reduction reaction of Zr species in molten LiCl-KCl salt was characterized for the first time using cyclic-voltammetry experiments. Pulsed-potential electrodeposition experiments were performed and the characteristics of the deposits were analyzed.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2023)
Article
Materials Science, Multidisciplinary
Awais Nisar, Sajid Iqbal, Muhammad Atiq Ur Rehman, Asif Mahmood, Muhammad Younas, Syed Zahid Hussain, Qanita Tayyaba, Attaullah Shah
Summary: Hydroxyapatite-based cerium-doped ceramics (Ce-HAp) were synthesized and investigated for their mechanical and dielectric properties. The crystal structure was studied using XRD and FTIR techniques, and the elemental composition of doped Ce ions was analyzed using ICP-OES and EDX. The results showed enhanced mechanical properties and improved electrical network formation in Ce-doped samples, suggesting the potential application of these composites in bone healing and bone growth. Ion release tests demonstrated the stability of Ce, H+, and OH- ions in the fabricated pellets, indicating the suitability of Ce-HAp ceramics for biomedical use.
MATERIALS CHEMISTRY AND PHYSICS
(2023)
Article
Chemistry, Physical
Munazza Razzaq, Muhammad Jawad Khan, Zahid Imran, Mushtaq Ahmad, Shafket Rasool, Muhammad Rehan, Sajid Iqbal, Mohsin Ali Raza Anjum, Sheeraz Mehboob, Muhammad Saifullah
Summary: Porous WO3 thin films were prepared using spin coating of WO3 nanoparticle's ink modified with polyvinyl alcohol (PVA). The change in structure and morphology of the films with varying PVA concentration was studied. The addition of an optimum amount of PVA improved the redox reaction characteristics of the thin films.
SOLID STATE IONICS
(2023)
Article
Multidisciplinary Sciences
Maria Bibi, Syeda Ammara Batool, Sajid Iqbal, Shaher Bano Zaidi, Rabia Hussain, Memoona Akhtar, Ahmad Khan, Mohammed S. Alqahtani, Mohamed Abbas, Muhammad Atiq Ur Rehman
Summary: This study developed P. harmala loaded MBGNs and analyzed their surface morphology and chemical composition. The drug was observed to release quickly and effectively inhibit the growth of bacteria. The in-vitro bioactivity of MBGNs was confirmed by the formation of a hydroxyapatite layer in simulated body fluid. The results suggest that PH-MBGNs have potential as scaffolding or coating components for BTE applications.
Article
Physics, Condensed Matter
Muhammad Jawad Khan, Munazza Razzaq, Syeda Sitwat Batool, Mushtaq Ahmad, Shafket Rasool, Atta Ullah Shah, Shafqat Hussain, Muhammad Rehan, Sajid Iqbal, Sheeraz Mehboob, Muhammad Saifullah
Summary: In this study, WO3 thin films were grown on FTO glass using an in-situ hydrothermal technique. By varying the molar ratio of ammonium acetate (CA) to tungsten, it was found that the thin film prepared with a CA/W ratio of 4 exhibited improved Li+ ions intercalation/deintercalation and faster reaction kinetics. XRD and SEM analysis showed negligible thin film growth with a CA/W ratio of 6. Overall, WO3 thin film with a CA/W ratio of 4 showed excellent performance, making it a promising candidate for electrochromics or other related applications.
MICRO AND NANOSTRUCTURES
(2023)
Article
Chemistry, Multidisciplinary
Muhammad Taqi Mehran, Mutawara Mahmood Baig, Faisal Shahzad, Salman Raza Naqvi, Sajid Iqbal
Summary: Gamma irradiation-based synthesis and modification of nanomaterials is a versatile technique to increase electrochemically active sites. By controlling parameters, tunable synthesis and surface modifications can be achieved. In this study, the effect of gamma irradiation on the electrochemical performance of Ti3C2Tx MXene was studied, leading to enhanced properties attributed to increased d-spacing.
NEW JOURNAL OF CHEMISTRY
(2023)
Article
Physics, Condensed Matter
Muhammad Jawad Khan, Munazza Razzaq, Syeda Sitwat Batool, Mushtaq Ahmad, Shafket Rasool, Muhammad Rehan, Sajid Iqbal, Sheeraz Mehboob, Muhammad Saifullah
Summary: Thin films of tungsten trioxide (WO3) were prepared using the in-situ hydrothermal method at different temperatures, and the effects of temperature on the film structure, morphology, and electrochemical performance were investigated. The results showed that the film prepared at 120 degrees Celsius exhibited the best electrochemical performance, which was attributed to its structure and morphology.
MICRO AND NANOSTRUCTURES
(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)
