Article
Environmental Sciences
Nitin Goyal, Vijaya Kumar Bulasara, Gang Li, Liying Liu
Summary: This study synthesized and modified MCM-41 adsorbent for the effective removal of AZN from aqueous phase. The optimized conditions for maximum removal of AZN were found to be a pH of 6 and a temperature of 313 K. The pseudo-first-order kinetic model provided the best fit, while the adsorption equilibrium isotherm models showed strong correlation with the removal process of AZN.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Engineering, Environmental
Yangyu Liu, Chunquan Li, Arman Peyravi, Zhiming Sun, Guangxin Zhang, Keivan Rahmani, Shuilin Zheng, Zaher Hashisho
Summary: Mesoporous silica MCM-41 was synthesized using sodium silicate extracted from natural Opoka, showing remarkable adsorption capacity for organic vapors mixture at 20 degrees Celsius and promising applications in VOCs abatement.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Chemistry, Applied
Ang Li, Xiao Chen, Tingting Guo, Guangtong Hai, Panpan Liu, Han Yu, Jianhang Xu
Summary: This study utilized molecular dynamics to investigate the molecular motion mechanisms of PCMs with different functional groups confined in mesoporous MCM-41, aiming to reveal the interaction mechanisms between the two at the molecular and atomic levels to provide theoretical guidance for the design and preparation of high-performance composite PCMs based on MCM-41.
MICROPOROUS AND MESOPOROUS MATERIALS
(2021)
Article
Energy & Fuels
Yang Liu, Junjie Liao, Liping Chang, Weiren Bao
Summary: This paper investigates the adsorption performance of silver-modified mesoporous materials in removing thiophenic compounds. The results show that the adsorption of thiophene by the sorbents involves S-Ag and pi complexation reactions, and the adsorption efficiency is greatly affected by benzene. XPS analysis reveals that silver interacts strongly with the carrier and forms Ag-O-Si bonds as the active centers for thiophenic compounds. The Mulliken charges of sulfur atoms have an impact on the interactions between silver and thiophene sulfur compounds.
Article
Engineering, Environmental
Lurong Ge, Yaohui Feng, Yanjun Dai, Ruzhu Wang, Tianshu Ge
Summary: This study develops a composite sorbent with excellent water sorption performance and long-term stability by encapsulating an ionic liquid in ordered mesoporous MCM-41. The composite sorbent exhibits fast sorption rate, low temperature-driven regeneration potential, and no corrosion to metal components.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Multidisciplinary
Jana Timm, Michael Furtmair, Roland Marschall
Summary: For the first time, the assembly of isolated and purified MCM-41 nanoparticles into nanofibers was achieved through electrospinning. The nanofibers were characterized and the spinning parameters were investigated to tailor the nanofiber diameter. Additionally, the nanofiber mats were successfully functionalized with sulfonic acid groups while maintaining the nanofiber morphology.
Article
Chemistry, Applied
Vicente Candela-Noguera, Maria Alfonso, Pedro Amoros, Elena Aznar, Maria Dolores Marcos, Ramon Martinez-Manez
Summary: This study comprehensively investigates the factors affecting the formation of MCM-41 type mesoporous silica nanoparticles (MSN). The hydrolysis and condensation rates are found to play a central role in nanoparticle formation, and disregarded parameters such as stirring strength and surfactant addition rate are shown to modulate nucleation and growth. Furthermore, the aging and evolution of MSN are studied through the analysis of silica framework consolidation over time, providing insights into obtaining reproducible, homogeneous, and tailored-made MCM-41 type MSN.
MICROPOROUS AND MESOPOROUS MATERIALS
(2024)
Article
Pharmacology & Pharmacy
Teodora Popova, Borislav Tzankov, Christina Voycheva, Ivanka Spassova, Daniela Kovacheva, Stanislav Tzankov, Denitsa Aluani, Virginia Tzankova, Nikolai Lambov
Summary: The study demonstrates the potential of MCM-41 and HMS as efficient drug delivery systems for bicalutamide, with high drug loading rates and reduced burst effect. The drug-loaded nanoparticles show good blood biocompatibility and increased antitumor activity against LNCaP cells.
JOURNAL OF DRUG DELIVERY SCIENCE AND TECHNOLOGY
(2021)
Article
Engineering, Chemical
Yangyu Liu, Arman Peyravi, Zaher Hashisho, Shuilin Zheng, Zhiming Sun, Xiao Chen, Yuping Tong, Yongxing Hao, Jiuyue Wang
Summary: Highly ordered hexagonal mesoporous silica was synthesized from natural Opoka minerals, and an all-atom model of MCM-41 was constructed by simulation. Characterization techniques such as XRD, N2 adsorption, FE-SEM, TEM and FT-IR were used, and the water vapor adsorption/desorption performance of the samples was evaluated. The simulation revealed that water molecules on MCM-41 mainly adsorbed on silanol groups and skeleton defects, and the adsorption changed from mono-layer to multi-layer with increasing pressure.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Chemistry, Applied
Gion Calzaferri, Samuel H. Gallagher, Dominik Bruhwiler
Summary: This study extends the analysis of compounds with multiple coordination sites to the description of adsorption isotherms, accurately determining adsorption enthalpy through particle distribution theory. Experimental data shows that the shape of all adsorption isotherms is primarily determined by entropy decrease with increasing coverage, with different sites exhibiting substantial differences in adsorption enthalpies. The information provided by the lc2-L analysis allows calculating the evolution of coverage of different sites as pressure increases.
MICROPOROUS AND MESOPOROUS MATERIALS
(2021)
Article
Engineering, Chemical
Fahmi Anwar, K. Suresh Kumar Reddy, Anish Mathai Varghese, Maryam Khaleel, Kean Wang, Georgios N. Karanikolos
Summary: Paraffin-selective adsorbents for ethane/ethylene separation were developed using surface-functionalized mesoporous silica adsorbents. The adsorbents exhibited reverse selectivity, becoming paraffin-selective due to enhanced van der Waal's interactions between the grafted ionic liquids and ethane. Various silica-based adsorbents functionalized with different loadings, anion, and cation types were synthesized and characterized. The adsorbents showed stable performance in pressure swing adsorption and breakthrough cyclic testing, with a breakthrough ethylene productivity of up to 1.2 mmol/g and a breakthrough selectivity of 2.4.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Biochemistry & Molecular Biology
Jinfan Yang, Ning Shang, Jiachen Wang, Huimin Liu
Summary: A novel MCM-41-supported Mg-Al-layered double oxide (LDO/MCM-41) was prepared and employed as a catalyst for the aldol condensation reaction. Compared to bulk LDO, LDO/MCM-41 exhibited higher selectivity and stability, achieving better performance at lower activity.
Article
Construction & Building Technology
Rafal Panek, Maciej Szelag, Wojciech Franus
Summary: The paper discusses the impact of MCM-41 mesoporous silica on the properties of cement matrix. It was found that the optimal content of MCM-41 is between 0.5% and 1%, as excess silica may disrupt the proper hydration process. The research indicates a high application potential of MCM-41 as an additive in cement.
JOURNAL OF BUILDING ENGINEERING
(2021)
Article
Biochemistry & Molecular Biology
Rana J. Kadhim, Faris H. Al-Ani, Qusay F. Alsalhy, Alberto Figoli
Summary: This study focuses on optimizing the incorporation of MCM-41 mesoporous material into PES membranes for nanofiltration applications, aiming to reduce membrane fouling and improve energy efficiency. By using optimization techniques, mathematical and statistical analyses, the study identified optimal operating parameters to enhance membrane performance at a larger scale.
Article
Biochemistry & Molecular Biology
Iane M. S. Souza, Sibele B. C. Pergher, Alexander Sachse
Summary: This study thoroughly investigated the possibility of crystallizing silicalite-1 from the pore walls of as-synthesized MCM-41 via steam-assisted crystallization. The results showed that the rapid destruction of the hexagonal mesophase occurred during SAC treatment, leading to the enlargement of mesopores and the formation of non-porous amorphous silica. Only after that, the crystallization of the MFI phase was evidenced.
Article
Chemistry, Applied
Margarida M. Antunes, Diogo Falcao, Auguste Fernandes, Filipa Ribeiro, Martyn Pillinger, Joao Rocha, Anabela A. Valente
Summary: The study investigated the isomerization of D-glucose using various catalysts and energy supply methods, and found that a hierarchical potassium/magnesium-containing Beta catalyst combined with ultrasound waves at 75 degrees Celsius showed favorable results for the reaction.
Article
Engineering, Chemical
Diana Juliao, Ana C. Gomes, Martyn Pillinger, Isabel S. Goncalves, Salete S. Balula
CHEMICAL ENGINEERING & TECHNOLOGY
(2020)
Article
Chemistry, Inorganic & Nuclear
Ana C. Gomes, Patricia Neves, Sandra Gago, Anabela A. Valente, Isabel S. Goncalves, Martyn Pillinger
EUROPEAN JOURNAL OF INORGANIC CHEMISTRY
(2020)
Article
Chemistry, Inorganic & Nuclear
Isabel B. Calhau, Ana C. Gomes, Sofia M. Bruno, Ana C. Coelho, Clara I. R. Magalhaes, Carlos C. Romao, Anabela A. Valente, Isabel S. Goncalves, Martyn Pillinger
EUROPEAN JOURNAL OF INORGANIC CHEMISTRY
(2020)
Article
Chemistry, Inorganic & Nuclear
Martinique S. Nunes, Patricia Neves, Ana C. Gomes, Luis Cunha-Silva, Andre D. Lopes, Anabela A. Valente, Martyn Pillinger, Isabel S. Goncalves
Summary: In this study, a novel hybrid polyoxometalate salt was prepared and utilized as a catalyst for the epoxidation of cis-cyclooctene and bio-derived olefins, showing promising catalytic performance. The crystal structure of the hybrid salt was characterized by X-ray crystallography, revealing the role of water molecules in mediating hydrogen bonding interactions. The hybrid salt exhibited enhanced catalytic activity compared to the traditional tetrabutylammonium salt, leading to the efficient epoxidation of various substrates including dl-limonene and fatty acid methyl esters.
INORGANICA CHIMICA ACTA
(2021)
Article
Chemistry, Physical
Andrey B. Lysenko, Ganna A. Senchyk, Kostiantyn V. Domasevitch, Patricia Neves, Anabela A. Valente, Martyn Pillinger, Isabel S. Goncalves
Summary: In this study, MoO3 coordination hybrids were developed using specific ligands and utilized for liquid phase epoxidation reactions, demonstrating good catalytic activity and separation performance. The complexes synthesized showed promising applications in catalytic processes.
Article
Chemistry, Physical
Estefania Delgado-Pinar, Ana L. Costa, Isabel S. Goncalves, Marta Pineiro, Martyn Pillinger, J. Sergio Seixas de Melo
Summary: A new bithiophene derivative showed increased fluorescence quantum yield in solution and even higher values when intercalated with a surfactant into a layered double hydroxide. The solid state study revealed the presence of monomers and aggregates, and time-resolved fluorescence studies further explained this phenomenon.
JOURNAL OF PHYSICAL CHEMISTRY C
(2021)
Article
Chemistry, Applied
Diana P. Gomes, Andreia F. Silva, Ana C. Gomes, Patricia Neves, Anabela A. Valente, Isabel S. Goncalves, Martyn Pillinger
Summary: The study focused on the confinement and catalytic behavior of Mo(CO)(6) species encapsulated in UiO-66 metalorganic frameworks, demonstrating their immobilization within the pore spaces of the hosts and their catalytic activity in olefin epoxidation. Excellent epoxide selectivity and efficiency were achieved, along with catalyst recycling and structural integrity retention. The study also highlighted the broader substrate scope and potential of UiO-66(Hf) as a catalyst support compared to its Zr counterpart.
MICROPOROUS AND MESOPOROUS MATERIALS
(2022)
Article
Chemistry, Physical
Martinique S. Nunes, Diana M. Gomes, Ana C. Gomes, Patricia Neves, Ricardo F. Mendes, Filipe A. Almeida Paz, Andre D. Lopes, Anabela A. Valente, Isabel S. Goncalves, Martyn Pillinger
Summary: The study focused on developing organomolybdenum heterogeneous catalysts for efficient epoxidation of olefins, where material 2 demonstrated excellent catalytic performance and recyclability.
Article
Chemistry, Physical
Diana M. Gomes, Patricia Neves, Margarida M. Antunes, Antonio J. S. Fernandes, Martyn Pillinger, Anabela A. Valente
Summary: Olefin epoxidation is a significant chemical transformation that converts olefins, derived from renewable sources or waste, into valuable chemicals. Various strategies were used to introduce molybdenum species into catalytic materials, allowing efficient epoxidation of bulky olefins. The study investigated the effects of metal precursor, impregnation method, support type, and synthesis methodology on catalytic performance. The results demonstrated that the use of MoO2(acac)(2) on pre-treated siliceous TUD-1 achieved the highest epoxidation activity and selectivity for methyl oleate conversion.
Article
Chemistry, Applied
Diana M. Gomes, Andreia F. Silva, Ana C. Gomes, Patricia Neves, Anabela A. Valente, Isabel S. Goncalves, Martyn Pillinger
Summary: The development of new catalysts is important for expanding the horizons of epoxidation and sulfoxidation processes. In this study, three pyrazine-bridged molybdenum-based coordination networks were investigated for their efficiency in these reactions. The catalysts showed high activity and selectivity for both epoxidation of olefins and oxidation of sulfides.
Article
Chemistry, Physical
Martinique S. Nunes, Diana M. Gomes, Ana C. Gomes, Patricia Neves, Ricardo F. Mendes, Filipe A. Almeida Paz, Andre D. Lopes, Martyn Pillinger, Anabela A. Valente, Isabel S. Goncalves
Summary: The discovery of a hybrid catalyst synthesized from renewable biomass is attractive for its environmental and economic benefits. This catalyst demonstrates stable catalytic activity for the oxidation of olefins and sulfides.
Article
Materials Science, Biomaterials
Andreia F. Silva, Isabel B. Calhau, Ana C. Gomes, Anabela A. Valente, Isabel S. Goncalves, Martyn Pillinger
Summary: Metal-organic frameworks (MOFs) have potential as nanoplatforms for the storage and delivery of therapeutic gasotransmitters. Tricarbonyl-pyrazine-molybdenum (0) MOFs were investigated for their ability to release carbon monoxide (CO). The study found that these MOFs can release high amounts of CO in the dark, making them attractive as potential CO-releasing materials.
ACS BIOMATERIALS SCIENCE & ENGINEERING
(2023)
Review
Chemistry, Inorganic & Nuclear
Patricia Neves, Diana M. Gomes, Isabel S. Goncalves, Martyn Pillinger, Anabela A. Valente
Summary: Catalysis is a fundamental field that contributes to the greenness and sustainability of chemical processes. A recent discovery in this field is reaction-controlled self-separating metal-based catalytic systems, which combine features of both homogeneous and heterogeneous catalysis. This system allows easy separation and reuse of the catalyst, without requiring energy-intensive downstream processes.
COORDINATION CHEMISTRY REVIEWS
(2023)
Article
Chemistry, Physical
Tatiana R. Amarante, Patricia Neves, Filipe A. Almeida Paz, Ana C. Gomes, Martyn Pillinger, Anabela A. Valente, Isabel S. Goncalves
Summary: The study presents a hybrid material [MoO3(2,2'-biimidazole)]·H2O as a superior catalyst for oxidation reactions due to its one-dimensional chain structure and excellent recyclability. In-depth characterization studies confirmed the heterogeneous phase reaction mechanism and high catalytic activity on various substrates.
CATALYSIS SCIENCE & TECHNOLOGY
(2021)
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)
