Microporous and Mesoporous Materials最新文献

{"title":"Amorphousness matters: Its role on nonpolar gas diffusion at the nanoscale","authors":"Solana M. Di Pino,&nbsp;Oscar Churio,&nbsp;Ezequiel de la Llave,&nbsp;Verónica M. Sánchez","doi":"10.1016/j.micromeso.2025.113540","DOIUrl":"10.1016/j.micromeso.2025.113540","url":null,"abstract":"<div><div>Amorphous carbon materials (ACM) produced using biomass waste feedstocks, offers an affordable, large-scale, and environmentally friendly production method. Their inherent porosity critically impacts gas diffusion and various applications, including gas separation, purification, and catalysis. This work determines, through molecular dynamics simulations, the effect of amorphicity on the diffusion of pure oxygen and methane, their 50% mixture and a 50% mixture of methane and carbon dioxide. For pure systems, we compare ACM with pores of similar size and regular shapes, such as slit pores and carbon nanotubes, with and without surface roughness. From the analysis of diffusion trajectories we find that molecular mobility decreases as the surface structural constrictions increase, configuring a more intricate molecular path for the gas to surface-diffuse. Specifically, constrictions imposed by the carbon surface structure increase in the next order: smooth surfaces, rough CNTs and ACMs. For ACM with a pore diameter of 1.5 nm, gas diffusion decreased by up to 95%. Notably, oxygen was trapped in surface defects (“pockets”) for both pure oxygen and its mixture with methane. The effects of pressure and temperature on the dynamic behavior of mixtures were also explored. For the 50% mixture of carbon dioxide and methane, we observed that in ACM with the smallest pore size, the relative diffusion is reduced by around 50% compared to bulk. Our findings suggest that amorphous materials could be preferred for devices that require high selectivity between gas mixtures due to their specific porous structure.</div></div>","PeriodicalId":392,"journal":{"name":"Microporous and Mesoporous Materials","volume":"388 ","pages":"Article 113540"},"PeriodicalIF":4.8,"publicationDate":"2025-02-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143471596","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Adsorption behavior of low-concentration nitrous oxide on natural mordenite zeolite","authors":"Saeko Yamaguchi ,&nbsp;Peidong Hu ,&nbsp;Hanlong Ya ,&nbsp;Peipei Xiao ,&nbsp;Ayako Nakata ,&nbsp;Tsuyoshi Miyazaki ,&nbsp;Yoshitada Morikawa ,&nbsp;Junko N. Kondo ,&nbsp;Kotaro Tange ,&nbsp;Kenichi Tonokura ,&nbsp;Masanori Takemoto ,&nbsp;Yasuo Yonezawa ,&nbsp;Toshiyuki Yokoi ,&nbsp;Kenta Iyoki ,&nbsp;Tatsuya Okubo ,&nbsp;Toru Wakihara","doi":"10.1016/j.micromeso.2025.113550","DOIUrl":"10.1016/j.micromeso.2025.113550","url":null,"abstract":"<div><div>Nitrous oxide (N₂O), the third most important greenhouse gas, is discharged from various anthropogenic sources and causes severe environmental problems. Herein, the natural mordenite zeolite is demonstrated to be an effective adsorbent to capture low-concentration N₂O (below 30 ppm). An adsorption capacity of 0.076 mmol g⁻¹ can be achieved at −7 °C with 1 ppm N₂O in the dynamic adsorption test, 6.3 times as high as that at 25 °C. The density functional theory calculations reveal that the Ca-exchanged MOR-type zeolite has stronger interactions with N₂O compared with the Na-exchanged one. However, as evidenced by the isosteric adsorption enthalpy analysis and the Fourier transform infrared spectroscopy, the natural mordenite zeolite with both Na⁺ and Ca²⁺, as well as the synthesized analogue, demonstrates stronger and distinctive interactions with trace N₂O in comparison to the MOR-type zeolites with single kind of extra-framework cation. These results provide experimental and theoretical foundations for the establishment of efficient N₂O removal system using well designed zeolite-based adsorbents under proper operating conditions.</div></div>","PeriodicalId":392,"journal":{"name":"Microporous and Mesoporous Materials","volume":"388 ","pages":"Article 113550"},"PeriodicalIF":4.8,"publicationDate":"2025-02-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143445734","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"New insights into the fluorine-alkali treatment and its application to ZSM-11 as a superior catalyst for chloromethane to propylene","authors":"Ting Xu,&nbsp;Shiyu Cen,&nbsp;Qinghu Tang,&nbsp;Pengling Zhang,&nbsp;Qianyi Zhao,&nbsp;Jie Zhang","doi":"10.1016/j.micromeso.2025.113547","DOIUrl":"10.1016/j.micromeso.2025.113547","url":null,"abstract":"","PeriodicalId":392,"journal":{"name":"Microporous and Mesoporous Materials","volume":"388 ","pages":"Article 113547"},"PeriodicalIF":4.8,"publicationDate":"2025-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143453174","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"One-step synthesis of aluminum dross-derived MIL-53(Al) as an aniline adsorbent","authors":"Ryota Yamane ,&nbsp;Yuki Masuda ,&nbsp;Satoshi Kobayashi ,&nbsp;Hiroki Konno","doi":"10.1016/j.micromeso.2025.113549","DOIUrl":"10.1016/j.micromeso.2025.113549","url":null,"abstract":"<div><div>Aluminum dross, an industrial waste product generated during the smelting and recycling of aluminum, is used in various industries; however, its application is limited. Metal–organic frameworks (MOFs), next-generation porous materials comprising metals and organic likers, offer tunable properties, including pore structure (shape and size), hydrophobicity, hydrophilicity, and stability, making them versatile for various applications. This study successfully achieved the one-step synthesis of MIL-53(Al), an MOF, using aluminum dross as a starting material for the first time. The dross-derived MIL-53(Al) exhibited high crystallinity, similar to that of conventional MIL-53(Al). It was further evaluated as an adsorbent for aniline, a compound widely used in chemical and pharmaceutical industries but harmful to human health and ecosystems. Liquid-phase adsorption experiments demonstrated that dross-derived MIL-53(Al) achieved an adsorption capacity similar to that of conventional MIL-53(Al), primarily owing to π‒π and hydrogen bonding interactions with aniline. The adsorption isotherm of dross-derived MIL-53(Al) conformed to the Langmuir model, indicating that the primary adsorption sites for aniline were its micropores. Furthermore, this MIL-53(Al) retained its adsorption capacity after up to four regeneration cycles using calcination. Thus, this study successfully synthesized MIL-53(Al) using aluminum dross as a precursor and demonstrated its potential effectiveness as a water purification agent.</div></div>","PeriodicalId":392,"journal":{"name":"Microporous and Mesoporous Materials","volume":"388 ","pages":"Article 113549"},"PeriodicalIF":4.8,"publicationDate":"2025-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143422317","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effect of surfactant-induced porosity and acidity modification of MOF-808 catalyst on the glycerol acetylation reaction","authors":"César A. Bravo-Sanabria ,&nbsp;Leidy C. Solano-Delgado ,&nbsp;Daniela Rosas-Ardila ,&nbsp;Carolina Ardila-Suárez ,&nbsp;Víctor G. Baldovino-Medrano ,&nbsp;Gustavo E. Ramírez-Caballero","doi":"10.1016/j.micromeso.2025.113539","DOIUrl":"10.1016/j.micromeso.2025.113539","url":null,"abstract":"<div><div>A promising approach for the catalytic acetylation of glycerol to produce high value-added chemicals such as diacetins (DAGs) and triacetin (TAG) is the use of acidic Metal-Organic Frameworks (MOFs). Particularly, MOF-808 has shown potential as catalyst for this reaction due to its tunable porosity and the ability to incorporate acid sites. Herein, we focused on modifying the porosity and acidity of MOF-808 to improve its catalytic performance in the acetylation of glycerol. Porosity changes were induced during the synthesis of MOF-808 by promoting the formation of larger pores using three different surfactants: cetyltrimethylammonium bromide (CTAB), sodium dodecyl sulfate (SDS), and pluronic P123 (PLU), in combination with propionic acid as a modulator. Results showed that the proposed modifications add either mesoporosity; pores with widths larger than 2.0 nm, or macroporosity, i.e., pores with widths larger than 50.0 nm, when it is used surfactants, to the purely microporous MOF-808. On the other hand, the acidity of porosity enhanced MOF-808 was modified by a post-synthetic acid treatment with sulfuric acid. This treatment led to the incorporation of well dispersed sulfate groups into the MOF structure which did not experienced a strong loss of porosity. Catalytic experiments demonstrated that the sulfated MOF samples exhibited higher glycerol conversion if compared to the other samples, while the non-sulfated MOF modified with pluronic P123 showed the highest selectivity towards triacetin. This suggests that the improved accessibility provided by mesopores facilitates the sequential acetylation steps, particularly favoring the formation of triacetin as the final product.</div></div>","PeriodicalId":392,"journal":{"name":"Microporous and Mesoporous Materials","volume":"388 ","pages":"Article 113539"},"PeriodicalIF":4.8,"publicationDate":"2025-02-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143422234","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Corrigendum to “Facile synthesis of ordered mesoporous Cu-ZrPO with high copper contents as catalyst for liquid phase oxidation of ethylbenzene” [Microporous Mesoporous Mater. 198, 2014, 271–280]","authors":"Zhichao Miao ,&nbsp;Huahua Zhao ,&nbsp;Jian Yang ,&nbsp;Jun Zhao ,&nbsp;Huanling Song ,&nbsp;Lingjun Chou","doi":"10.1016/j.micromeso.2025.113526","DOIUrl":"10.1016/j.micromeso.2025.113526","url":null,"abstract":"","PeriodicalId":392,"journal":{"name":"Microporous and Mesoporous Materials","volume":"387 ","pages":"Article 113526"},"PeriodicalIF":4.8,"publicationDate":"2025-02-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143454540","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Synthesis of spherical mesoporous silica beads with tunable size, stiffness and porosity","authors":"M. Milani ,&nbsp;K. Ahmad ,&nbsp;E. Cavalletti ,&nbsp;C. Ligoure ,&nbsp;L. Cipelletti ,&nbsp;M. Kongkaew ,&nbsp;P. Trens ,&nbsp;L. Ramos","doi":"10.1016/j.micromeso.2025.113534","DOIUrl":"10.1016/j.micromeso.2025.113534","url":null,"abstract":"<div><div>We present an innovative template-free water-based sol–gel method to produce uniform mesoporous silica beads of millimeter size, which have tunable size, stiffness and porosity, and could be used for adsorption applications. Our protocol exploits an in-situ enzymatic reaction to produce spherical beads of hydrogel from a charge-stabilized suspension of silica nanoparticles confined in a millimetric drop suspended in a non-miscible oil. Once the gelation step is complete, the spherical bead of gel is cleaned from oil and deposited onto a hydrophobic surface and let dry. Separating the gelation to the drying steps ensures a spatially uniform gel and allows us to perform a solvent exchange before drying. For all beads, we observe a crack-free drying process leading to the formation of stiff quasi-spherical beads with diameter in the range 1 to 5 mm and Young modulus in the range <span><math><mrow><mrow><mo>(</mo><mn>0</mn><mo>.</mo><mn>1</mn><mo>−</mo><mn>2</mn><mo>)</mo></mrow><mspace></mspace><mi>GPa</mi></mrow></math></span> and narrow pore size distribution, centered around 10 to <span><math><mrow><mn>25</mn><mspace></mspace><mi>nm</mi></mrow></math></span> depending on the experimental conditions. Finally, to demonstrate the potentiality of these materials, we graft on the bead surface aminosilane molecules, and quantify their CO<span><math><msub><mrow></mrow><mrow><mn>2</mn></mrow></msub></math></span> adsorption efficiency. Overall, the production method we have developed is simple, readily adaptable, and offers promising materials for adsorption, storage, catalysis and chromatography.</div></div>","PeriodicalId":392,"journal":{"name":"Microporous and Mesoporous Materials","volume":"387 ","pages":"Article 113534"},"PeriodicalIF":4.8,"publicationDate":"2025-02-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143372305","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Influence of the amount of sulfur supported on sustainable ordered mesoporous carbons from tannin for high-performance electrodes in lithium‒sulfur batteries","authors":"Rubens Lucas de Freitas Filho ,&nbsp;Keiliane Silva Santos ,&nbsp;Rayane Cristian Ferreira Silva ,&nbsp;Lucas Coelho de Oliveira ,&nbsp;Igor Bolonezi Gomes ,&nbsp;Fernanda Gabrielle Gandra ,&nbsp;Luan Teixeira Cardoso ,&nbsp;Danielle Diniz Justino ,&nbsp;Paula Sevenini Pinto ,&nbsp;Ana Paula de Carvalho Teixeira ,&nbsp;João Paulo Campos Trigueiro ,&nbsp;Paulo Fernando Ribeiro Ortega ,&nbsp;Rodrigo Lassarote Lavall ,&nbsp;Glaura Goulart Silva","doi":"10.1016/j.micromeso.2025.113530","DOIUrl":"10.1016/j.micromeso.2025.113530","url":null,"abstract":"<div><div>Technological options for batteries are currently in great demand, and among them, lithium-sulfur batteries (Li-S) are promising. The low electrical conductivity of sulfur, the large volume variation, and the formation of soluble lithium polysulfides are the main challenges facing Li-S. This work proposes addressing these challenges by using sustainable ordered mesoporous carbon as a support for the sulfur in the cathode. The study showed how different contents of incorporated sulfur impact the electrochemical properties. Mesoporous carbons were obtained from tannins with a distribution of micro- and mesopores, and after the introduction of sulfur, the micropores were occupied. The sulfur contents in the MCS0.7, MCS1, and MCS2 composites obtained from the TG curves were 29 wt%, 39 wt%, and 61 wt%, respectively. XPS results indicated that the presence of S₈ atoms infiltrated into the mesopores, and in smaller quantities, S₂_{_-}₄ atoms infiltrated into the interior of the micropores due to spatial constraints. The specific capacity at 0.1C was 1033 mA h g_S⁻¹ for MCS0.7, 830 mA h g_S⁻¹ for MCS1, and 666 mA h g_S⁻¹ for MCS2. The capacity values are greater for composites with lower sulfur contents, which favors charge transfer. This behavior can be explained by considering that a greater fraction of the elemental sulfur is in direct contact with the surface of the carbon matrix in these cases, as observed by the characterization of the materials. Furthermore, the MCSs showed an excellent rate capability due to their mesoporous structure. MCS1 was chosen for the cyclic stability tests, and a coulombic efficiency close to 99 % was observed during the test. The performance of these materials is among the best for Li-S batteries based on biomass-derived carbon. The results highlight the great potential of sustainable mesoporous carbon materials from biomass as efficient and environmentally friendly components for high-performance lithium‒sulfur batteries.</div></div>","PeriodicalId":392,"journal":{"name":"Microporous and Mesoporous Materials","volume":"387 ","pages":"Article 113530"},"PeriodicalIF":4.8,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143163913","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Enhanced ion pairing of calcium, zinc, and lanthanum with acetate in silica nanopores","authors":"Bidemi T. Fashina ,&nbsp;Anthony P. Baldo ,&nbsp;Heath Watts ,&nbsp;Kevin Leung ,&nbsp;James D. Kubicki ,&nbsp;Anastasia G. Ilgen","doi":"10.1016/j.micromeso.2025.113538","DOIUrl":"10.1016/j.micromeso.2025.113538","url":null,"abstract":"<div><div>The well-established intrinsic properties and reactivity of molecules in aqueous environments are influenced when confined in pores, cages, channels, or slits. Nanoconfined chemical systems are common in the environment, such as in soils and sedimentary rocks. In this study, the impact of nanoscale confinement on the ion pairing involving Ca²⁺, Zn²⁺, and La³⁺ with CH₃COO⁻ anions was investigated. The concentrations of free (uncomplexed) CH₃COO⁻ and the Mⁿ⁺–CH₃COO⁻ species (acetate complexed with a cation, M = Ca²⁺, Zn²⁺, or La³⁺) were quantified using Raman spectroscopy performed on bulk aqueous solutions and on the same solutions confined within 4 nm amorphous silica nanopores. The calculated equilibrium constants increased by 0.09, 1.70, and 2.5 units for Ca²⁺–, Zn²⁺–, and La³⁺–CH₃COO⁻, respectively, when compared to analogous constants measured for bulk solutions. These shifts in the equilibrium constants correspond to the free energy of formation of contact ion pairs in confinement becoming more favorable by 0.11, 0.77, and 0.40 kJ⸳mol⁻¹ compared to bulk solution phase. In support of the experimental findings, molecular dynamics and density functional theory calculations predict the stabilization of contact ion pairs in confined systems compared to bulk aqueous environment. The observed increase in the equilibrium constants of contact ion pairing is attributed to the lower desolvation cost in the silica nanopore compared to unconfined aqueous solution.</div></div>","PeriodicalId":392,"journal":{"name":"Microporous and Mesoporous Materials","volume":"387 ","pages":"Article 113538"},"PeriodicalIF":4.8,"publicationDate":"2025-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143163917","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"ZSM-5/PEG/DOX nanocarrier for pH-responsive doxorubicin release: Kinetic, isothermal, and cytotoxic studies","authors":"Mahin Broukanlou ,&nbsp;Seyed Ali Hosseini ,&nbsp;Yaghub Pazhang","doi":"10.1016/j.micromeso.2025.113531","DOIUrl":"10.1016/j.micromeso.2025.113531","url":null,"abstract":"<div><div>The application of ZSM-5/PEG nanoparticles as a drug carrier for the adsorption and release of doxorubicinas an anti-cancer drug was investigated. ZSM-5 zeolite was pegylated at different ratios, and ZSM-5/PEG with a mass ratio of (10:4) exhibited the best drug loading and loading efficiency of 83 % (14 mg/g). The carrier showed pH-responsive behaviour, releasing 65 % of the drug at pH 5.6 and 21 % at pH 7.4. The differential scanning calorimetry (DSC) approved the thermal stability of ZSM-5/PEG carrier under body conditions. The absorption models revealed that drug absorption onto ZSM-5/PEG followed the Freundlich model (<span><math><mrow><msup><mi>R</mi><mn>2</mn></msup></mrow></math></span> = 0.93), indicating multilayered absorption of DOX on ZSM-5/PEG nanoparticles. Moreover, the results of kinetic studies confirmed that among the different kinetic models, the Korsmeyer-Peppas model effectively described the release behaviour from the carrier. The values of n and K for the Korsmeyer-Peppas model resulted in 0.22 and 0.36, respectively, indicating that doxorubicin release from ZSM-5/PEG nanocarrier had a slow releasing rate and followed Fick's law. MTT assay showed that loading the DOX on the ZSM-5/PEG nanoparticles increased their cytotoxic effects on the HCT-116 cell line by almost 10 times with the lowest IC₅₀ values(38.1, 10.4, and 2.33 μg/ml for 24 h, 48 h, and 72 h after treatment, respectively). The study found that ZSM-5/PEG/DOX has the potential to treat cancer as a pH-sensitive and slow-releasing drug.</div></div>","PeriodicalId":392,"journal":{"name":"Microporous and Mesoporous Materials","volume":"387 ","pages":"Article 113531"},"PeriodicalIF":4.8,"publicationDate":"2025-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143163920","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}