{"title":"Recent progress in the green synthesis of zeolite membranes","authors":"Liangqing Li , Jiajia Li , Liangsong Li","doi":"10.1016/j.micromeso.2025.113761","DOIUrl":"10.1016/j.micromeso.2025.113761","url":null,"abstract":"<div><div>Zeolite membranes have attracted much attention due to their regular and uniform pore structure and good thermal stability, and have attracted much attention in application fields such as gas separation and solvent dehydration. The traditional hydrothermal synthesis of zeolite membranes usually requires a large amount of synthesis solution or gel, relies on expensive and potentially dangerous organic structure directing agents (OSDAs), and involves a long crystallization time and high operating pressure. These factors lead to large resource consumption, significant chemical waste, and pose environmental and safety hazards. In recent years, with the growing interest in developing green and sustainable zeolite membrane synthesis routes to overcome these limitations, it has gradually become a research hotspot in this field. This review summarizes and discusses recent advances in the green synthesis of zeolite membranes from several aspects, including reduced quantity of synthesis solutions or gels, OSDA-free synthesis, low-cost and biodegradable OSDA-assisted synthesis, microwave-assisted synthesis, and ionothermal synthesis and outlines future development prospects in this field.</div></div>","PeriodicalId":392,"journal":{"name":"Microporous and Mesoporous Materials","volume":"397 ","pages":"Article 113761"},"PeriodicalIF":4.8,"publicationDate":"2025-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144604984","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}
Shuhan Song , Xiaolong Zheng , Xiaoyu Liu , Jiyue Ding , Ruike Gao , Jianyang Gao , Zilin Meng
{"title":"Tetracycline adsorption on carbon-based adsorbents: Insights into dimensional and chemical effects","authors":"Shuhan Song , Xiaolong Zheng , Xiaoyu Liu , Jiyue Ding , Ruike Gao , Jianyang Gao , Zilin Meng","doi":"10.1016/j.micromeso.2025.113757","DOIUrl":"10.1016/j.micromeso.2025.113757","url":null,"abstract":"<div><div>This study systematically investigates the adsorption mechanism of tetracycline (TC) by three carbonaceous materials-carbon nanotubes (CNTs), graphene oxide (GO), and activated carbon (AC). Using comprehensive characterization (SEM, BET, FT-IR, and Raman), structural and chemical differences among the materials were revealed. Kinetic analysis shows the adsorption process follows the intraparticle diffusion model and pseudo-second-order kinetics, indicating adsorption capacity is governed by effective site accessibility and TC mass transfer. Thermodynamic studies demonstrate varying average site energies with temperature, with isothermal data described by the Generalized Langmuir model, highlighting adsorption site selectivity in the carbon matrix. Site energy distribution theory reveals high-energy sites exhibit superior efficiency and stronger adsorption affinity for TC. XPS analysis confirms oxygen-containing functional groups dominate TC adsorption mediation. This study proposes the site energy distribution theory, which provides important insights into the structure-activity relationship of carbon adsorbents and facilitates the analysis of complex adsorption processes.</div></div>","PeriodicalId":392,"journal":{"name":"Microporous and Mesoporous Materials","volume":"397 ","pages":"Article 113757"},"PeriodicalIF":4.8,"publicationDate":"2025-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144623592","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":"Efficient removal of Sr2+ from aqueous solutions with amino acid-functionalized Zr-MOFs","authors":"Jun-Jiang Yan , Xiang-Yue Qi , Ying Han, Chao Chen, Hao Wang, Wei Li, Chuan-Song Qi","doi":"10.1016/j.micromeso.2025.113758","DOIUrl":"10.1016/j.micromeso.2025.113758","url":null,"abstract":"<div><div>The development of efficient adsorbents for rapid strontium ion (Sr<sup>2+</sup>) sequestration holds crucial significance in addressing environmental remediation and radioactive waste management. Herein, we developed a series of zirconium-based metal-organic frameworks (Zr-MOFs: <strong>UiO-66-NH-Cys</strong>, <strong>-Ala</strong>, <strong>-His</strong>, <strong>-Phe</strong>, <strong>-Pro</strong>) functionalized with amino acids through post-synthetic modification (PSM), which improved Sr<sup>2+</sup> adsorption performance. Notably, <strong>UiO-66-NH-Cys</strong> achieves a superior adsorption capacity (86.21 mg g<sup>−1</sup>) under optimized conditions (pH 10.0, 298 K, initial concentration 300 mg L<sup>−1</sup>), outperforming pristine <strong>UiO-66-NH<sub>2</sub></strong> and other amino acid-functionalized analogues. Mechanistic research indicates that Sr<sup>2+</sup> binding primarily involves coordination with cysteine's thiol (-SH) and amine (-NH<sub>2</sub>) groups, complemented by ion exchange processes and electrostatic interaction. This work establishes amino acid-functionalized Zr-MOFs as precision-engineered adsorbents for selective Sr<sup>2+</sup> removal, while providing a rational design strategy for addressing multifaceted aqueous contamination through targeted molecular engineering.</div></div>","PeriodicalId":392,"journal":{"name":"Microporous and Mesoporous Materials","volume":"397 ","pages":"Article 113758"},"PeriodicalIF":4.8,"publicationDate":"2025-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144595997","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}
Yuxin Ji , Changyu Weng , Longlong Ma, Jianguo Liu
{"title":"Evolution and prospects of heterogeneous chiral catalysis","authors":"Yuxin Ji , Changyu Weng , Longlong Ma, Jianguo Liu","doi":"10.1016/j.micromeso.2025.113748","DOIUrl":"10.1016/j.micromeso.2025.113748","url":null,"abstract":"<div><div>Chiral catalysis enables precise asymmetric synthesis with exceptional stereoselectivity, driving advances in biomedicine and agrochemistry. However, traditional homogeneous systems often suffer from poor recyclability and limited stereoselectivity in complex reactions. Heterogeneous chiral catalysts address these issues through facile separation/reuse and enhanced stability via immobilization strategies, offering sustainable solutions for industrial synthesis. While they have demonstrated significant economic and societal value across various fields, challenges remain regarding catalyst stability and the precise control of stereoselectivity and other aspects. This review focuses on recent advances in heterogeneous chiral catalysts, including MOFs, COFs, HOFs, and SiO<sub>2</sub>-based systems. We outline the synthesis and applications of these catalyst classes, summarize their respective advantages and limitations, and discuss strategies to optimize their catalytic performance. The current industrialization bottlenecks are analyzed, and future perspectives on the development of heterogeneous chiral catalysts are provided. This work offers key insights into the design of robust and scalable chiral catalysts for industrial applications.</div></div>","PeriodicalId":392,"journal":{"name":"Microporous and Mesoporous Materials","volume":"397 ","pages":"Article 113748"},"PeriodicalIF":4.8,"publicationDate":"2025-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144604983","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":"Progress and expansion of ADOR zeolites","authors":"Wieslaw J. Roth , Jiří Čejka","doi":"10.1016/j.micromeso.2025.113738","DOIUrl":"10.1016/j.micromeso.2025.113738","url":null,"abstract":"<div><div>Selective disassembly of zeolites to provide building blocks for controllable reassembly into new 3-dimensional and expanded structures has been hindered by the overall robustness of their frameworks. Zeolite UTL with high content of germanium atoms located predominantly in its D4R units proved to be susceptible to hydrolysis producing 1 nm thick layers that could be reorganized and reassembled yielding new zeolites including unfeasible ones based on thermodynamics of conventional bottom-up zeolite syntheses. This Assembly (of UTL)-Disassembly (into layers)-Organization-Reassembly (new structures), abbreviated ADOR, has been extended to other frameworks making it a general strategy for similar high-Ge zeolites and possibly others with built-in weakness enabling disassembly into 2D and potentially 1D periodic units. UTL has provided the largest number of diverse structures, both 3D frameworks and 2D architectures, so it is discussed in this perspective as the model system and template for developing analogous materials with other zeolites. Its notable features include continuously tunable porosity through hydrolysis dependent on acid concentration and organization into 4 different structures by layer shifts. These processes are controlled by Ge concentration and distribution, crystal properties and other variables, which must be worked out for other zeolites. The perspective includes possibilities for future developments and issues to be investigated.</div></div>","PeriodicalId":392,"journal":{"name":"Microporous and Mesoporous Materials","volume":"397 ","pages":"Article 113738"},"PeriodicalIF":4.8,"publicationDate":"2025-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144580138","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}
Yuna Han, Mickael Rivallan, Kim Larmier, Gerhard D. Pirngruber
{"title":"On the use of a bulky base for evaluating the accessibility of Brønsted acid sites in USY zeolites","authors":"Yuna Han, Mickael Rivallan, Kim Larmier, Gerhard D. Pirngruber","doi":"10.1016/j.micromeso.2025.113746","DOIUrl":"10.1016/j.micromeso.2025.113746","url":null,"abstract":"<div><div>In this study, we investigate the diffusion kinetics in mesoporous-microporous USY zeolites using tri-tert-butyl-pyridine (ttBPy). A series of zeolites with varying textural properties were prepared using dealumination and desilication methods, and the kinetic parameters for diffusion on the active sites through micro- and mesopores were extracted by fitting a Linear Driving Force (LDF) model. The diffusion model assumes a two step process in which the adsorptive first diffuses from the gas phase into the mesopores, and then continues into the micropores. We find that the fraction of acid sites in mesopores (f<sub>meso</sub>) correlates well with both mesopore volume and surface area, while the apparent diffusion rate constant in micropore domain (k'<sub>micro</sub>) is mainly influenced by mesopore surface area. Both dealumination and desilication were effective in enhancing diffusion. Dealumination improved accessibility without significant generation of mesopore volume due to the removal of a crust of amorphous species that blocked access to micropores from the external surface. In contrast, desilication introduced additional mesopores that serve as entry points to the microporous network within the crystal. These results provide a quantitative comparison of diffusion rates in mesopores and micropores and offer practical insights into tailoring pore structures for optimal mass transport, particularly in applications involving bulky molecules.</div></div>","PeriodicalId":392,"journal":{"name":"Microporous and Mesoporous Materials","volume":"397 ","pages":"Article 113746"},"PeriodicalIF":4.8,"publicationDate":"2025-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144597191","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":"Role of textural properties of clay-based microporous materials on their CH4/CO2 separation performances in the context of biogas upgrading","authors":"Anwar El Azrak, Denys I. Grekov, Pascaline Pré","doi":"10.1016/j.micromeso.2025.113749","DOIUrl":"10.1016/j.micromeso.2025.113749","url":null,"abstract":"<div><div>The separation of CO<sub>2</sub> and CH<sub>4</sub> in the biogas upgrading context is a crucial step toward increasing the share of renewable bio-methane in natural gas infrastructure. Adsorption-based processes, particularly Vacuum/Pressure Swing Adsorption (V/PSA), are widely used for CO<sub>2</sub> removal owing to their energy efficiency and scalability. This study examines the CO<sub>2</sub> and CH<sub>4</sub> adsorption capacities of various natural and synthetic smectite clay minerals with differing layer charges, exchanged with Na<sup>+</sup>, Cs<sup>+</sup>, and TMA<sup>+</sup> cations, to assess their potential as selective adsorbents in separation processes. X-ray diffraction analysis revealed systematic shifts in basal spacing under the effect of cation exchange, related to the interlayer spaces expansion. Textural properties, including specific surface area (S<sub>BET</sub>) and micropore volume (V<sub>μp</sub>) were determined using the BET and <em>t-plot</em> models applied to N<sub>2</sub> adsorption isotherms at −196 °C. The fraction of high-energy surface sites (HESS) was assessed from high-resolution Ar adsorption isotherm data measured at −186 °C. Equilibrium separation performances were determined from measurements of CO<sub>2</sub> and CH<sub>4</sub> adsorption capacities and binary mixture selectivities. These data were analysed according to clay structural and textural properties. Experimental results reveal that the non-exchanged synthetic nano-clays demonstrate higher selectivity than natural counterparts, likely due to their larger density of surface defects enhancing CO<sub>2</sub> interactions at low pressures. Cs <sup>+</sup> -exchanged clays exhibit narrow interlayer microporosity, which contributes to improve the CO<sub>2</sub> adsorption selectivity while excluding CH<sub>4</sub> due to steric effects. In contrast, the TMA<sup>+</sup>-exchanged forms show significant interlayer expansion, enhancing both CH<sub>4</sub> and CO<sub>2</sub> uptakes, but degrading adsorption selectivity. A quantitative screening of the clay systems based on the computation of hybrid material metrics suggests that tailoring interlayer spaces thanks to cation exchange may significantly improve separation performances of Vacuum/Pressure Swing Adsorption processes.</div></div>","PeriodicalId":392,"journal":{"name":"Microporous and Mesoporous Materials","volume":"396 ","pages":"Article 113749"},"PeriodicalIF":4.8,"publicationDate":"2025-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144548927","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}
Xianglong Tan , Jianwei Zhang , Yuting Zhang , Jiahuan Du , Chun Zhang , Xuehong Gu
{"title":"Understanding template removal from MFI zeolite membranes by low-temperature ozone calcination","authors":"Xianglong Tan , Jianwei Zhang , Yuting Zhang , Jiahuan Du , Chun Zhang , Xuehong Gu","doi":"10.1016/j.micromeso.2025.113743","DOIUrl":"10.1016/j.micromeso.2025.113743","url":null,"abstract":"<div><div>MFI zeolite membranes are typically synthesized with the aid of an organic template, i.e., tetrapropylammonium hydroxide (TPAOH). Consequently, it is crucial to remove the template from the membrane and simultaneously minimize non-selective defects. Ozonation at low temperature has been known as a mild detemplation to produce high-selective zeolite membranes reproducibly. However, the microstructural evolution of zeolite membrane especially template molecules during ozonation remains unclear. In this study, the microstructural evolution of the TPAOH molecule in MFI zeolite during low-temperature ozonation was investigated. The thermogravimetric analysis (TGA) and N<sub>2</sub> adsorption results indicate the gradual reduction in the amount of template with increasing ozonation time. The Fourier-transform infrared (FT-IR) spectroscopy, in-situ diffuse reflectance infrared Fourier-transform spectroscopy (DRIFTS) and <sup>13</sup>C nuclear magnetic resonance (NMR) results suggest the formation of new carbon species in the final zeolite. After ozonation for 8 h, ca. 87 % in mass of the template was removed from the MFI zeolite membrane. In comparison with the MFI zeolite membranes treated with air calcination, the MFI zeolite membranes detemplated in O<sub>3</sub> for 8 h (MFI-O<sub>3</sub>_8 h) exhibited a superior separation factor of 801 in para-xylene/ortho-xylene (PX/OX) separation at 150 °C, indicating fewer defects existed in the membrane. The as-synthesized membrane exhibited good separation stability during the PX/OX separation. In addition, MFI zeolite membranes were synthesized on hollow fiber supports with a length of 40 cm. These membranes showed excellent performance for xylene isomer separation (PX/OX separation factor >90).</div></div>","PeriodicalId":392,"journal":{"name":"Microporous and Mesoporous Materials","volume":"397 ","pages":"Article 113743"},"PeriodicalIF":4.8,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144595996","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":"Preface to the collection of invited papers series: Synthesis","authors":"Eng-Poh Ng, Svetlana Mintova","doi":"10.1016/j.micromeso.2025.113744","DOIUrl":"10.1016/j.micromeso.2025.113744","url":null,"abstract":"","PeriodicalId":392,"journal":{"name":"Microporous and Mesoporous Materials","volume":"396 ","pages":"Article 113744"},"PeriodicalIF":4.8,"publicationDate":"2025-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144587471","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":"Structural stability and catalytic activity assessment of (silanized) Titanosilicate-1 catalysts in liquid-phase oxidative desulfurization reaction","authors":"Mozaffar Shakeri , Samira Motamednejad , ZeynabAlsadat Khatami Shal , AmirHossein Yadollahi , Cheuk-Wai Tai","doi":"10.1016/j.micromeso.2025.113740","DOIUrl":"10.1016/j.micromeso.2025.113740","url":null,"abstract":"<div><div>Activity study of the titanosilicate zeolites in liquid-phase oxidation reactions has received significant attention up to this point, whereas less effort has been made on structural stability. Here, we report catalytic activity and structural stability assessment of a supported embryonic TS-1 (E-TS-1) and 2 μm (μm)-sized crystalline TS-1 zeolites synthesized under different strategies in the oxidative desulfurization reaction (ODS) in the presence of varying amounts of water. The desulfurization activity of the TS-1 catalysts decreased significantly with the amount of water in the ODS reaction, while the silanized TS-1 catalysts showed higher activity than the pristine TS-1 catalysts and slowed Ti leaching. FTIR, SAED, TEM-EDX, SEM-EDX, HRTEM, FE-SEM, N<sub>2</sub> sorption, and drift UV–Vis were among the analytical techniques utilized to thoroughly investigate the structural stability of the (silanized) TS-1 and those recovered from the ODS processes from the nano-to macro-scale. For the first time, we describe how the ODS reactions causes detachment of the μm-sized (silanized) TS-1 crystals into primary amorphous nanoparticles through the adverse of non-classical crystallization as the primary mechanism. The degree to which the (silanized) TS-1 crystals detach and undergo morphological changes was influenced by the synthesis strategy, catalytic turnover, and reaction conditions. Large crystals dissolution into amorphous nanoparticles and Ti leaching account for the loss of solids and decline in activity of TS-1 zeolites in liquid-phase oxidation processes. This would help in the development of more robust catalysts to support their practical uses.</div></div>","PeriodicalId":392,"journal":{"name":"Microporous and Mesoporous Materials","volume":"396 ","pages":"Article 113740"},"PeriodicalIF":4.8,"publicationDate":"2025-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144523054","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}