Microporous and Mesoporous Materials最新文献_第5页

PdCu alloy nanoparticles confined in hollow porous silica nanospheres for alkyne semi-hydrogenation 钯铜合金纳米颗粒限制在空心多孔二氧化硅纳米球中用于炔半加氢

IF 4.7 3区材料科学

Microporous and Mesoporous Materials Pub Date : 2026-03-01 Epub Date: 2025-12-17 DOI: 10.1016/j.micromeso.2025.114002

Yiting Peng , Qianqian Zhou , Lei Wang , Pengcheng Wang , Shenghu Zhou

{"title":"PdCu alloy nanoparticles confined in hollow porous silica nanospheres for alkyne semi-hydrogenation","authors":"Yiting Peng , Qianqian Zhou , Lei Wang , Pengcheng Wang , Shenghu Zhou","doi":"10.1016/j.micromeso.2025.114002","DOIUrl":"10.1016/j.micromeso.2025.114002","url":null,"abstract":"<div><div>Olefins generated from semi-hydrogenations of alkynes are important intermediates for the synthesis of spices, pharmaceuticals, pesticides and polymers. However, semi-hydrogenations of alkynes remain challenging to achieve both high catalytic activity and selectivity under mild conditions due to the easy over-hydrogenation. In this study, we report the synthesis of PdCu alloy nanoparticles encapsulated in hollow porous silica nanospheres (PdCu@HPSNs) for semi-hydrogenations of alkynes. The mentioned materials were synthesized by a templating method in a reverse microemulsion system, and feature small PdCu nanoparticles inside hollow cavities. Under mild conditions and a substrate/Pd molar ratio of 1000/1, the optimized Pd<sub>1</sub>Cu<sub>0.5</sub>@HPSNs achieved complete conversion of 2-methyl-3-butyn-2-ol at 18 min with 2-methyl-3-buten-2-ol selectivity of up to 96.7 %. In addition, the catalysts are recyclable, and show much better performance for semi-hydrogenations of a series of alkynes than their monometallic analogues. The enhancement can be ascribed to the formation of PdCu alloy inside hollow silica nanospheres, where the Pd-Cu interaction improves the semi-hydrogenation performance, and the silica shells protect inner nanoparticles to increase their stability.</div></div>","PeriodicalId":392,"journal":{"name":"Microporous and Mesoporous Materials","volume":"403 ","pages":"Article 114002"},"PeriodicalIF":4.7,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145789878","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}

引用次数: 0

Thermo-mechanochemical interzeolite conversion in water-deficient systems 热-机械化学沸石在缺水系统中的转化

IF 4.7 3区材料科学

Microporous and Mesoporous Materials Pub Date : 2026-03-01 Epub Date: 2025-12-19 DOI: 10.1016/j.micromeso.2025.113981

Nikola Jakupec , Erik Uran , Magdalena Jabłońska , Krunoslav Užarević , Ana Palčić

引用次数: 0

CoFe2O4 nanoparticles supported on MCM-41 as highly efficient peroxymonosulfate catalyst for tetracycline degradation MCM-41负载的CoFe2O4纳米颗粒作为高效过氧单硫酸盐催化剂降解四环素

IF 4.7 3区材料科学

Microporous and Mesoporous Materials Pub Date : 2026-03-01 Epub Date: 2026-01-02 DOI: 10.1016/j.micromeso.2026.114027

Yangyu Liu , Ke Ren , Jiuyue Wang , Arman Peyravi , Zaher Hashisho , Yuping Tong , Xiao Wang , Xi Chen , Jinggan Shao , Jinyong Wu , Ruqin Gao

{"title":"CoFe2O4 nanoparticles supported on MCM-41 as highly efficient peroxymonosulfate catalyst for tetracycline degradation","authors":"Yangyu Liu , Ke Ren , Jiuyue Wang , Arman Peyravi , Zaher Hashisho , Yuping Tong , Xiao Wang , Xi Chen , Jinggan Shao , Jinyong Wu , Ruqin Gao","doi":"10.1016/j.micromeso.2026.114027","DOIUrl":"10.1016/j.micromeso.2026.114027","url":null,"abstract":"<div><div>In this study, CoFe<sub>2</sub>O<sub>4</sub> nanoparticles were anchored onto natural Opoka-derived MCM-41 (denoted as CFMCM) using a facile citrate combustion method, resulting in a composite with excellent performance and stability. Systematic characterization and peroxymonosulfate (PMS) activation experiments were conducted to evaluate tetracycline (TC) degradation performance. Compared to bare CoFe<sub>2</sub>O<sub>4</sub>, CFMCM exhibited greatly enhanced specific surface area and pore volume. The MCM-41 support facilitated multidirectional crystallization of CoFe<sub>2</sub>O<sub>4</sub> nanoparticles, resulting in reduced grain size and lower crystallinity, thereby providing abundant active sites for PMS activation. The CFMCM composite demonstrated superior PMS activation capability with a degradation rate constant that was 3.3 times higher than bare CoFe<sub>2</sub>O<sub>4</sub>. The uniform anchoring of highly dispersed CoFe<sub>2</sub>O<sub>4</sub> nanoparticles on MCM-41 effectively prevented metal leaching, ensuring excellent reusability. Radical quenching tests and electron paramagnetic resonance (EPR) analysis revealed that reactive oxygen species (•OH, SO<sub>4</sub>•<sup>-</sup>, and <sup>1</sup>O<sub>2</sub>) participated in the degradation process, with SO<sub>4</sub>•<sup>-</sup> and <sup>1</sup>O<sub>2</sub> being the dominant species. These reactive species were generated through the redox cycling between Co<sup>2+</sup>/Co<sup>3+</sup> and Fe<sup>2+</sup>/Fe<sup>3+</sup> pairs. Furthermore, possible TC degradation pathways were proposed based on intermediates identification. This work provides new insights into developing high-efficiency PMS-activating catalysts derived from natural minerals for wastewater treatment.</div></div>","PeriodicalId":392,"journal":{"name":"Microporous and Mesoporous Materials","volume":"403 ","pages":"Article 114027"},"PeriodicalIF":4.7,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145921898","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}

引用次数: 0

Hydrotalcite-zeolite composites as precursors for catalysis: Synthesis, transformation and structural stability 水滑石-沸石复合材料作为催化前驱体：合成、转化和结构稳定性

IF 4.7 3区材料科学

Microporous and Mesoporous Materials Pub Date : 2026-03-01 Epub Date: 2026-01-08 DOI: 10.1016/j.micromeso.2026.114031

Sylwia Górecka , Kateřina Pacultová , Kateřina Karásková , Kamil Górecki , Kateřina Kupková , Eva Kinnertová , Antonio Eduardo Palomares Gimeno , Lucie Obalová

{"title":"Hydrotalcite-zeolite composites as precursors for catalysis: Synthesis, transformation and structural stability","authors":"Sylwia Górecka , Kateřina Pacultová , Kateřina Karásková , Kamil Górecki , Kateřina Kupková , Eva Kinnertová , Antonio Eduardo Palomares Gimeno , Lucie Obalová","doi":"10.1016/j.micromeso.2026.114031","DOIUrl":"10.1016/j.micromeso.2026.114031","url":null,"abstract":"<div><div>In this study, Cu-based hydrotalcite-zeolite (CuHT-ZSM-5) composites were synthesized and characterized to explore their potential as catalyst precursors. The hydrotalcite phase was successfully formed on ZSM-5 zeolite supports with different Si/Al ratios under standard co-precipitation conditions (pH = 10, T = 65 °C). Structural analysis confirmed that the zeolite framework remained intact during synthesis, with only minor acidity modifications observed for Al-containing ZSM-5. The hydrotalcite layers were composed of copper, magnesium and aluminium cations, while the carbonate anions were used as interlayer anions.</div><div>Thermal decomposition of the CuHT phase resulted in in-situ generation of highly dispersed mixed metal oxides (MMOs). Textural characterization revealed that optimal calcination temperatures (500–600 °C) allow to obtain materials with high specific surface areas, while excessive heating (≥800 °C) led to partial collapse of the porous structure and formation of new MgSiO<sub>3</sub> phases.</div><div>The study demonstrates that CuHT-ZSM-5 composites are structurally stable, thermally resistant, and exhibit tuneable acidity – key properties for catalytic applications. These findings open new possibilities for optimizing MMO-zeolite catalysts, particularly for NH<sub>3</sub>-SCO reactions.</div></div>","PeriodicalId":392,"journal":{"name":"Microporous and Mesoporous Materials","volume":"403 ","pages":"Article 114031"},"PeriodicalIF":4.7,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145921908","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}

引用次数: 0

Tailoring MIL-101(Cr) via a mixed-ligand strategy for enhanced adsorption of phenolic, pesticide, and dye pollutants: Experimental and DFT insight 裁剪MIL-101（Cr）通过混合配体策略增强吸附酚类，农药，和染料污染物：实验和DFT的见解

IF 4.7 3区材料科学

Microporous and Mesoporous Materials Pub Date : 2026-03-01 Epub Date: 2025-12-20 DOI: 10.1016/j.micromeso.2025.113997

Nuhaa Faaizatunnisa , Ratna Ediati , Enis Nadia Md Yusof , Arif Fadlan , Muhammad Naufal Ariesta , Desindy Ramadhani Putri

{"title":"Tailoring MIL-101(Cr) via a mixed-ligand strategy for enhanced adsorption of phenolic, pesticide, and dye pollutants: Experimental and DFT insight","authors":"Nuhaa Faaizatunnisa , Ratna Ediati , Enis Nadia Md Yusof , Arif Fadlan , Muhammad Naufal Ariesta , Desindy Ramadhani Putri","doi":"10.1016/j.micromeso.2025.113997","DOIUrl":"10.1016/j.micromeso.2025.113997","url":null,"abstract":"<div><div>Organic pollutants, including synthetic dyes, phenolic compounds, and pesticide residues commonly found in wastewater, pose persistent threats to aquatic ecosystem protection. In this study, a mixed-ligand strategy was employed to synthesize MIL-101(Cr) with enhanced adsorption performance toward structurally diverse pollutants, namely methyl orange (MO), 2-naphthol, and carbaryl. The mixed-ligand MIL-101(Cr)-NH<sub>2</sub> was tailored by varying the molar ratio between 1,4-benzenedicarboxylic acid (H<sub>2</sub>BDC) and 2-amino-1,4-benzenedicarboxylic acid (NH<sub>2</sub>BDC), while nitric acid (HNO<sub>3</sub>) was used as a safer, non-toxic alternative to hydrofluoric acid (HF) as the modulator in the hydrothermal synthesis. Notably, the MOF prepared with 75 % NH<sub>2</sub>BDC (MILCr75 %) exhibited a significantly higher specific surface area (1754.7 m<sup>2</sup>/g) compared to pristine MIL-101(Cr) (1094.5 m<sup>2</sup>/g). Adsorption kinetics followed the pseudo-second-order model, with maximum adsorption capacities of 410.55 mg/g for MO, 67.48 mg/g for 2-naphthol, and 36.31 mg/g for carbaryl. The corresponding rate constants (k<sub>2</sub>) were 0.0135 g/mg·min, 0.0119 g/mg·min, and 0.109 g/mg·min, respectively. To complement the experimental results, density functional theory (DFT) calculations were performed to elucidate the electronic properties of the pollutants and their adsorption interactions with the MOF. Furthermore, MILCr75 % demonstrated superior chemical and water stability, retaining removal efficiencies of 77 % for MO and 68 % for 2-naphthol even after five adsorption–desorption cycles. This work highlights the synergistic benefits of mixed-ligand engineering and computational insights in designing robust MOFs for ionic and non-ionic pollutant remediation.</div></div>","PeriodicalId":392,"journal":{"name":"Microporous and Mesoporous Materials","volume":"403 ","pages":"Article 113997"},"PeriodicalIF":4.7,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145838952","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}

引用次数: 0

From controlled doping to efficient catalysis: MOF-derived Ce-Mn oxides for selective alkene oxidation 从受控掺杂到高效催化：mof衍生的Ce-Mn氧化物用于选择性烯烃氧化

IF 4.7 3区材料科学

Microporous and Mesoporous Materials Pub Date : 2026-03-01 Epub Date: 2025-12-18 DOI: 10.1016/j.micromeso.2025.113999

Wenwen Li, Zhigang Zhang, Yuntao Hu, Guangbing Zheng, Hongyan Xu, Huaiqing Zhao

{"title":"From controlled doping to efficient catalysis: MOF-derived Ce-Mn oxides for selective alkene oxidation","authors":"Wenwen Li, Zhigang Zhang, Yuntao Hu, Guangbing Zheng, Hongyan Xu, Huaiqing Zhao","doi":"10.1016/j.micromeso.2025.113999","DOIUrl":"10.1016/j.micromeso.2025.113999","url":null,"abstract":"<div><div>In recent years, MOF-templated pyrolysis has emerged as a novel strategy for the synthesis of composite transition metal oxides with unique structures. Herein, binary metal oxides composites MnO<sub>x</sub>/CeO<sub>2</sub> derived from MOF were successfully synthesized and applied for the selective oxidation of alkenes. The results indicate that the reaction pathway is critically determined by the employment of solvent. The selective epoxidation of alkenes was achieved with this catalyst in organic solvents, whereas the oxidation of alkenes to the corresponding carbonyl compounds was achieved in aqueous media. A series of characterization techniques on the catalyst revealed that the excellent catalytic performance is attributed to the synergy of Ce-Mn bimetallic oxides, the Mn<sup>3+</sup>/Ce<sup>4+</sup> → Mn<sup>4+</sup>/Ce<sup>3+</sup> redox cycle, and abundant oxygen vacancies. Furthermore, the catalyst demonstrated excellent structural stability and reusability performance, maintaining its catalytic activity over ten consecutive reaction cycles. Additionally, mechanistic investigations revealed the involvement of a radical pathway in the catalytic reactions.</div></div>","PeriodicalId":392,"journal":{"name":"Microporous and Mesoporous Materials","volume":"403 ","pages":"Article 113999"},"PeriodicalIF":4.7,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145838951","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}

引用次数: 0

Radiolytic synthesis of silver-zeolite nanocomposites for long-term antibacterial activity 辐射分解合成具有长期抗菌活性的银沸石纳米复合材料

IF 4.7 3区材料科学

Microporous and Mesoporous Materials Pub Date : 2026-03-01 Epub Date: 2025-12-22 DOI: 10.1016/j.micromeso.2025.114013

Mon Bryan Z. Gili , Mark Laurence V. Cabahug , Gina B. Abrera , Vina B. Argayosa , Shah Qasim Jan , Manh-Huong Phan , Jirawat Assawakhajornsak , Hideki Nakajima , Marlon T. Conato , Marienette M. Vega

{"title":"Radiolytic synthesis of silver-zeolite nanocomposites for long-term antibacterial activity","authors":"Mon Bryan Z. Gili , Mark Laurence V. Cabahug , Gina B. Abrera , Vina B. Argayosa , Shah Qasim Jan , Manh-Huong Phan , Jirawat Assawakhajornsak , Hideki Nakajima , Marlon T. Conato , Marienette M. Vega","doi":"10.1016/j.micromeso.2025.114013","DOIUrl":"10.1016/j.micromeso.2025.114013","url":null,"abstract":"<div><div>A green gamma radiolytic method was utilized to synthesize silver-zeolite nanocomposites (Ag/ZeoNCs) using Philippine natural zeolite (PNZ) and synthetic Zeolite 4A, with ι-carrageenan as the food-grade reducing agent. (Ag/ZeoNCs) were irradiated at 5, 10, and 15 kGy doses, facilitating in-situ reduction of Ag<sup>+</sup> to Ag<sup>0</sup> without toxic reducing agents or inert gas purging. XRD confirmed the retention of zeolite crystallinity post-irradiation, while TEM revealed bimodal AgNP size distributions (∼2 nm and ∼13 nm), localized primarily on zeolite surfaces. XPS analysis detected both Ag<sup>+</sup> and Ag<sup>0</sup> species, with increasing Ag<sup>0</sup> signal intensity at higher doses, confirming partial reduction. The Ag content in Zeolite 4A samples ranged from 0.0413 to 0.0445 at. %. Antimicrobial indices (AI) for irradiated samples ranged from 0.55 to 0.64 depending on dose and bacterial strain, exceeding that of Ag<sup>+</sup>-exchanged controls (AI = 0.54–0.60). The AI increased with silver nitrate loading, reaching a plateau at 208 μL of 0.2 M AgNO<sub>3</sub> solution, indicating a saturation point for optimal antibacterial efficacy. Over a 5-month period, long-term tests showed an increase in AI from an initial 0.18 to peaks of 0.32 (<em>E. coli</em>) and 0.30 (<em>S. aureus</em>), followed by slight decline while remaining above baseline. These results demonstrate that gamma-radiolytically synthesized Ag/Zeo4ANCs maintain strong, durable antibacterial activity with minimal silver loading (0.0445 at. %), offering a sustainable and effective antimicrobial platform.</div></div>","PeriodicalId":392,"journal":{"name":"Microporous and Mesoporous Materials","volume":"403 ","pages":"Article 114013"},"PeriodicalIF":4.7,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145838956","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}

引用次数: 0

Dual-phase nicotine adsorption by phenolic hydroxyl-enriched activated carbon 酚羟基富集活性炭对烟碱的双相吸附

IF 4.7 3区材料科学

Microporous and Mesoporous Materials Pub Date : 2026-03-01 Epub Date: 2025-12-18 DOI: 10.1016/j.micromeso.2025.113975

Hongyu Liu , Yufan Wang , Tongguang Xu , Haoyu Bu , Qian Kong , Huatong Li , Haixiao Sun , Zhaoshuo Yuan , Linglong Yao , Xuelian Zhang , Xin Zhang

{"title":"Dual-phase nicotine adsorption by phenolic hydroxyl-enriched activated carbon","authors":"Hongyu Liu , Yufan Wang , Tongguang Xu , Haoyu Bu , Qian Kong , Huatong Li , Haixiao Sun , Zhaoshuo Yuan , Linglong Yao , Xuelian Zhang , Xin Zhang","doi":"10.1016/j.micromeso.2025.113975","DOIUrl":"10.1016/j.micromeso.2025.113975","url":null,"abstract":"<div><div>Nicotine, being the highly toxic, strongly addictive, and poorly biodegradable alkaloid, posing dual threats to human health and ecological systems. However, current nicotine adsorbents are plagued by issues such as high costs, limited adsorption capacity, and restricted environmental adaptability. In this study, through pre-treatment and persulfate ammonium oxidation modification methods, oxidized activated carbon (AC-A-APS) was successfully synthesized. Aqueous-phase adsorption experiments demonstrated that modified activated carbon (AC-A-APS) achieved an equilibrium adsorption capacity (q<sub>e</sub>) of 151.4 mg g<sup>−1</sup> based on the Langmuir model for nicotine, representing a 59 % enhancement compared to the original activated carbon (AC, 95.2 mg g<sup>−1</sup>). In laboratory simulation device testing and smoking machine trials, AC-A-APS exhibited nicotine aerosol retention efficiencies of 90.1 % and 84.7 %, respectively. This study significantly increased the specific surface area of activated carbon and enriched oxygen-containing groups through acid washing and ammonium persulfate oxidation treatment demonstrated by N<sub>2</sub> adsorption-desorption, NH<sub>3</sub>-TPD characterizations. By modulating the pore structure and surface acidic functional groups, the adsorption and capture efficiency of nicotine in both aqueous solution and gaseous states can be synergistically enhanced. The study provides key theoretical and technical support for developing high-performance, renewable adsorbents for wastewater treatment and cigarette filters.</div></div>","PeriodicalId":392,"journal":{"name":"Microporous and Mesoporous Materials","volume":"403 ","pages":"Article 113975"},"PeriodicalIF":4.7,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145789879","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}

引用次数: 0

Competitive adsorption and diffusion of CO2/N2 in M-ZSM-5 for post-combustion capture: A molecular simulation insight CO2/N2在M-ZSM-5中燃烧后捕获的竞争性吸附和扩散：分子模拟见解

IF 4.7 3区材料科学

Microporous and Mesoporous Materials Pub Date : 2026-03-01 Epub Date: 2025-12-30 DOI: 10.1016/j.micromeso.2025.114024

Ziyi Zhao, Weixin Qian, Hongfang Ma, Weiyong Ying, Haitao Zhang, Peiqing Yuan

{"title":"Competitive adsorption and diffusion of CO2/N2 in M-ZSM-5 for post-combustion capture: A molecular simulation insight","authors":"Ziyi Zhao, Weixin Qian, Hongfang Ma, Weiyong Ying, Haitao Zhang, Peiqing Yuan","doi":"10.1016/j.micromeso.2025.114024","DOIUrl":"10.1016/j.micromeso.2025.114024","url":null,"abstract":"<div><div>Carbon capture, utilization, storage (CCUS), particularly post-combustion CO<sub>2</sub> capture, relies heavily on efficient gas separation materials. Zeolites have shown great potential as adsorbents due to their tunable structures and adsorption properties. In this work, Grand Canonical Monte Carlo (GCMC) and molecular dynamics (MD) simulations were employed to investigate the competitive adsorption and diffusion behaviors of CO<sub>2</sub> and N<sub>2</sub> in M-ZSM-5 (M = Li, Na, K) under flue gas conditions. It was notably found that although the adsorption of pure N<sub>2</sub> increases with pressure in these zeolites, N<sub>2</sub> uptake becomes negligible in competitive flue gas mixtures, while CO<sub>2</sub> adsorption remains largely unaffected. This behavior leads to a significant enhancement in CO<sub>2</sub>/N<sub>2</sub> selectivity. Among all samples, Li-ZSM-5 exhibited the highest performance, with a CO<sub>2</sub> uptake of 2.41 mol/kg and a selectivity of 640 for CO<sub>2</sub> over N<sub>2</sub> at 303 K and 1 bar, which is attributed to the strong electrostatic interactions introduced by cation modification. These findings highlight the promising application of cation-exchanged ZSM-5 zeolites for efficient CO<sub>2</sub> separation from flue gas.</div></div>","PeriodicalId":392,"journal":{"name":"Microporous and Mesoporous Materials","volume":"403 ","pages":"Article 114024"},"PeriodicalIF":4.7,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145921896","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}

引用次数: 0

Chiral tubular hypercrosslinked polymers from orientational rolling-up of nanosheet directed by ortho-position substitution 手性管状超交联聚合物的定向卷曲纳米片定向位置取代

IF 4.7 3区材料科学

Microporous and Mesoporous Materials Pub Date : 2026-03-01 Epub Date: 2025-12-17 DOI: 10.1016/j.micromeso.2025.114000

Rong Lei, Rutong Zhang, Xiaolei Fu, Lu Li, Yuhuan Nie, Qibin Chen

{"title":"Chiral tubular hypercrosslinked polymers from orientational rolling-up of nanosheet directed by ortho-position substitution","authors":"Rong Lei, Rutong Zhang, Xiaolei Fu, Lu Li, Yuhuan Nie, Qibin Chen","doi":"10.1016/j.micromeso.2025.114000","DOIUrl":"10.1016/j.micromeso.2025.114000","url":null,"abstract":"<div><div>Despite the significant progress in the synthesis of hypercrosslinked polymers (HCPs), the precise construction of HCPs with unique nano- and microstructures without using template remains a great challenge. In this study, a uniquely nanotubular HCP had been synthesized via an ortho-substitution strategy activated by electron-donating groups introduced, using 4,4′-biphenyldiol (BPD) and <em>p</em>-dichloroxylene (DCX) as building block and crosslinker, respectively. More strikingly, nanotubular HCPs derived from achiral BPD and DCX afford the enantioselective recognition ability to some extent, hereafter denoted as chiral HCP (CHCP). All CHCPs tend to spontaneously form the ultra-thin sheet at the first stage, subsequently roll-up and self-assemble into nanotubes. In order to further improve the enantioselectivity, a certain amount of <em>D-</em> or <em>L</em>-phenylalanine (<em>D-</em> or <em>L</em>-Phe) was used as chiral selector to improve the chiral environment, affording the corresponding nanotubular <em>D</em>- and <em>L</em>-CHCPs. Moreover, the combination of the nanotubular CHCP with the chiral selector can exert a significant synergic effect on improving the enantioselectivity, according to the differential pulse voltammetry (DPV). Our findings suggest that the ortho-substitution strategy proposed in this work represents a fundamentally new approach that opens significant opportunities for the manipulation of HCP structures and the enhancement in the specifically functional property of new materials.</div></div>","PeriodicalId":392,"journal":{"name":"Microporous and Mesoporous Materials","volume":"403 ","pages":"Article 114000"},"PeriodicalIF":4.7,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145789881","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}

引用次数: 0