Microporous and Mesoporous Materials最新文献

Electroassisted cofactor regeneration with Co-immobilized FDH-GlyDH on mesoporous silica for enhanced CO2 conversion 在介孔二氧化硅上共固定化FDH-GlyDH的电辅助辅因子再生增强CO2转化

IF 4.8 3区材料科学

Microporous and Mesoporous Materials Pub Date : 2025-05-28 DOI: 10.1016/j.micromeso.2025.113706

Sara García , Clarissa Cocuzza , Lorena Wilson , Marco Piumetti , Carminna Ottone

{"title":"Electroassisted cofactor regeneration with Co-immobilized FDH-GlyDH on mesoporous silica for enhanced CO2 conversion","authors":"Sara García , Clarissa Cocuzza , Lorena Wilson , Marco Piumetti , Carminna Ottone","doi":"10.1016/j.micromeso.2025.113706","DOIUrl":"10.1016/j.micromeso.2025.113706","url":null,"abstract":"<div><div>The coupled formate dehydrogenase (FDH) and glycerol dehydrogenase (GlyDH) system enables the simultaneous production of formate and 1,3-dihydroxyacetone (DHA) from CO<sub>2</sub> and glycerol, with internal NAD(H) cofactor recycling, mimicking metabolic pathways. However, mismatched reaction rates between FDH and GlyDH limit overall efficiency. In this study, we investigated the individual and co-immobilization of FDH and GlyDH on mesoporous silica and evaluated the addition of electrochemical NADH regeneration to improve cofactor balance. Biocatalysts were characterized in terms of immobilization efficiency, activity retention, and stability across temperature and pH ranges. We demonstrate that the optimal FDH-to-GlyDH ratio depends on whether electrochemical regeneration is applied: without it, a lower FDH/GlyDH ratio favors formate production due to GlyDH's faster kinetics; with it, a higher ratio enhances early-stage formate synthesis by alleviating NADH limitations. The system achieved a maximum DHA concentration of 17 mM (FDH/GlyDH = 1:8, no electrochemical regeneration) and a maximum formate concentration of 2.75 mM (FDH/GlyDH = 2.3:1, with electrochemical regeneration). These results demonstrate that combining enzyme immobilization with electrochemical cofactor regeneration can significantly enhance CO<sub>2</sub> bioconversion, offering a promising strategy not only for carbon capture and valorization but also for optimizing other NAD(H)-dependent multienzymatic systems.</div></div>","PeriodicalId":392,"journal":{"name":"Microporous and Mesoporous Materials","volume":"396 ","pages":"Article 113706"},"PeriodicalIF":4.8,"publicationDate":"2025-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144178109","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

Optimized diffusion pathways in hierarchically porous CoSe2@porous N-doped carbon for lithium and potassium storage 优化扩散途径在层次多孔CoSe2@porous氮掺杂碳的锂和钾的存储

IF 4.8 3区材料科学

Microporous and Mesoporous Materials Pub Date : 2025-05-27 DOI: 10.1016/j.micromeso.2025.113711

Hongjung Kim , Gyeongmin Kim , Nokeun Park , Misook Kang , Moonsu Kim , Gibaek Lee

引用次数: 0

Pore and doping engineering of carbon cathodes for high-performance Zn-ion capacitors 高性能锌离子电容器碳阴极孔与掺杂工程

IF 4.8 3区材料科学

Microporous and Mesoporous Materials Pub Date : 2025-05-21 DOI: 10.1016/j.micromeso.2025.113703

Yujie Wu , Yaning Xu , Min Tang , Yawen Qiao , Chengwei Zhang , Puguang Ji , Olga Klimova-Korsmik , Mirtemir Kurbanov , Gongkai Wang

{"title":"Pore and doping engineering of carbon cathodes for high-performance Zn-ion capacitors","authors":"Yujie Wu , Yaning Xu , Min Tang , Yawen Qiao , Chengwei Zhang , Puguang Ji , Olga Klimova-Korsmik , Mirtemir Kurbanov , Gongkai Wang","doi":"10.1016/j.micromeso.2025.113703","DOIUrl":"10.1016/j.micromeso.2025.113703","url":null,"abstract":"<div><div>Pore engineering emerges as a critical strategy for improving carbon cathodes in Zn-ion capacitors (ZICs). Nevertheless, harmonizing the ratios of various pore levels, including macropores, mesopores, and micropores, to concurrently achieve superior Zn storage capacity and sustained cyclic stability within ZICs represents an ongoing and intricate challenge. In this work, we propose a novel pore and doping engineering strategy for the carbon cathode, achieving N-doped ordered macro-/meso-/microporous carbon (denoted as N-Macro/Meso/Micro-C) via templating methods. In which, the ordered interconnected macropores can provide channels for rapid electrolyte diffusion, the mesopores can act as intermediaries, bridging the gap between the macropores and micropores, optimizing the ion transport pathways, and the micropores can provide abundant active sites for Zn-storage. Furthermore, the introduction of N atoms within carbon enhances Zn-ion affinity and stability. As expected, ZICs assembled with the N-Macro/Meso/Micro-C cathode exhibit remarkable performance, delivering a high Max. energy/power density of 143.14 Wh kg<sup>−1</sup>/40.1 kW kg<sup>−1</sup>. Remarkably, after 50,000 cycles, the ZICs can retain 88 % of their initial capacity, illustrating robust cyclability. These advancements are further validated in flexible Zn-ion micro capacitors, showing excellent performance under mechanical stress. The colloidal crystal template-based pore engineering design philosophy will provide direction for the development of the next generation of high-performance Zn-ion based devices.</div></div>","PeriodicalId":392,"journal":{"name":"Microporous and Mesoporous Materials","volume":"395 ","pages":"Article 113703"},"PeriodicalIF":4.8,"publicationDate":"2025-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144137892","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

Functional group directed tuning of highly recyclable Zr-MOF beads for preferential VOC adsorption 高可回收Zr-MOF珠的官能团定向调谐，以优先吸附VOC

IF 4.8 3区材料科学

Microporous and Mesoporous Materials Pub Date : 2025-05-20 DOI: 10.1016/j.micromeso.2025.113700

Stephen Lirio , Shuo-Hung Kao , Yu-Lun Lai , Cheng-Shiuan Lee , Pamela Berilyn So , Chia-Her Lin

{"title":"Functional group directed tuning of highly recyclable Zr-MOF beads for preferential VOC adsorption","authors":"Stephen Lirio , Shuo-Hung Kao , Yu-Lun Lai , Cheng-Shiuan Lee , Pamela Berilyn So , Chia-Her Lin","doi":"10.1016/j.micromeso.2025.113700","DOIUrl":"10.1016/j.micromeso.2025.113700","url":null,"abstract":"<div><div>Volatile organic compounds (VOCs) are pollutants representing a great risk to human health. In this study, the adsorption performance of various zirconium metal organic frameworks (Zr-MOFs) and their composites with polyvinyl alcohol (PVA) was systematically evaluated toward preferential adsorption of polar, non-polar, and acidic VOCs. Zr-MOFs were selected for their ease of preparation, structural stability, tunability, and ability to incorporate diverse functional groups. The composites (Zr-MOFs@PVA) were fabricated <em>via</em> freeze granulation process by embedding Zr-MOFs in PVA at an optimized ratio. Among the Zr-MOF powders, UiO-66-NH<sub>2</sub> exhibited high adsorption for acetone, and isopropanol (IPA) due to its exposed –NH<sub>2</sub> groups, while highly defective UiO-66 demonstrated greater affinity for non-polar toluene, attributed to its high surface area and defect sites. Upon PVA incorporation, the Zr-MOFs@PVA beads exhibited significantly enhanced adsorption capacities for most VOCs tested, outperforming commercial activated carbon and zeolite adsorbents. This enhancement is attributed to the synergistic tuning of surface properties and pore environments induced by PVA. Notably, UiO-66@PVA beads showed the most versatile and consistent performance, demonstrating excellent reusability over 10 adsorption-desorption cycles without loss of crystallinity. Furthermore, under dynamic low-concentration, it achieved a toluene adsorption capacity of 314.45 mg/g. These findings highlight the potential of Zr-MOF@PVA composites as efficient and reusable VOC adsorbent for air purification applications.</div></div>","PeriodicalId":392,"journal":{"name":"Microporous and Mesoporous Materials","volume":"395 ","pages":"Article 113700"},"PeriodicalIF":4.8,"publicationDate":"2025-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144125311","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

Adsorption of methyl mercaptan on zeolitic Nanostructure: Computer simulation 沸石纳米结构对甲基硫醇的吸附：计算机模拟

IF 4.8 3区材料科学

Microporous and Mesoporous Materials Pub Date : 2025-05-19 DOI: 10.1016/j.micromeso.2025.113701

Fatemeh Ektefa , Jafar Towfighi Darian , Saeed Soltanali

{"title":"Adsorption of methyl mercaptan on zeolitic Nanostructure: Computer simulation","authors":"Fatemeh Ektefa , Jafar Towfighi Darian , Saeed Soltanali","doi":"10.1016/j.micromeso.2025.113701","DOIUrl":"10.1016/j.micromeso.2025.113701","url":null,"abstract":"<div><div>Developing effective methods to identify zeolites with high adsorption capacities for capturing trace light mercaptans from gas feeds remains a significant challenge in industrial processes. In order to anticipate the adsorption behavior and gain deeper insight into the methyl mercaptan adsorption mechanism, Grand Canonical Monte Carlo (GCMC) simulations were conducted on several all-silica zeolite frameworks with varying topologies (FAU, DDR, LTL, MWW, and CHA) at 298 K with pressure ranges spanning from 0 to 100 kPa and 0–0.005 kPa. The results show that FAU and MWW zeolite have the highest adsorption at high and low pressure, respectively. Under high-pressure conditions, the adsorption capacity correlates directly with the pore volume of the adsorbent materials. FAU has the lowest framework density in comparison with the other pure silica zeolites resulting in the highest micropore volume. At low pressures, the zeolite exhibiting the highest adsorption is one with pore sizes large enough to permit the entry and interaction of methyl mercaptan molecules, yet not so large as to reduce adsorption efficiency. Comparing the fitted q<sub>max</sub> values across different isotherm models suggests that the Langmuir model effectively describes the adsorption behavior of mercaptan on the chosen zeolites.</div></div>","PeriodicalId":392,"journal":{"name":"Microporous and Mesoporous Materials","volume":"395 ","pages":"Article 113701"},"PeriodicalIF":4.8,"publicationDate":"2025-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144125313","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

Ethylene adsorption mechanisms in exchanged zeolite and zeolite-PLA composite for versatile use in climacteric produce preservation 交换沸石和沸石-聚乳酸复合材料的乙烯吸附机理及其在高温农产品保鲜中的应用

IF 4.8 3区材料科学

Microporous and Mesoporous Materials Pub Date : 2025-05-19 DOI: 10.1016/j.micromeso.2025.113702

Andrea M. Pereyra , M. Sergio Moreno , Cristian M. Piqueras , J. Alejandro Ávila Ramírez

{"title":"Ethylene adsorption mechanisms in exchanged zeolite and zeolite-PLA composite for versatile use in climacteric produce preservation","authors":"Andrea M. Pereyra , M. Sergio Moreno , Cristian M. Piqueras , J. Alejandro Ávila Ramírez","doi":"10.1016/j.micromeso.2025.113702","DOIUrl":"10.1016/j.micromeso.2025.113702","url":null,"abstract":"<div><div>Active packaging for reducing surrounding ethylene of climacteric produce is becoming more widespread in the global market. Their practical use requires shaping porous materials to confer mechanical strength, structural integrity, and improved handling properties. For this reason, powder materials and composites were studied to determine the evolution of the structure with the chemical composition and its influence on the adsorptive mechanisms. A zeolite NaA and an Ag<sup>+</sup>/Zn<sup>2+</sup>-exchanged A were synthesized to provide biocidal and ethylene-scavenging properties. The NaA and exchanged-A were shaped by moulding process using a matrix of poly (lactic acid) to produce a biocomposite leading to a composite with a porous structure in the macro scale with different interphases zeolite/polymer. The zeolite NaA was in close contact with the polymer while the formation of metal and oxide nanoparticles in exchanged-zeolite induced well-defined interphases evidencing a repulsive interaction between the polymer and the crystals.</div><div>Powder materials exhibited the highest adsorption capacity. In NaA, physisorption was the primary adsorption mechanism, whereas in exchanged-A, chemisorption played a significant role. NaA is advantageous for recyclability due to the weak bonding of C<sub>2</sub>H<sub>4</sub>, allowing for easier regeneration. In contrast, exchanged zeolite demonstrated enhanced sensitivity for scavenging trace amounts of C<sub>2</sub>H<sub>4</sub>. The biocomposite containing exchanged-A displayed a distinct behavior, where chemisorption became the dominant adsorption mechanism.</div></div>","PeriodicalId":392,"journal":{"name":"Microporous and Mesoporous Materials","volume":"395 ","pages":"Article 113702"},"PeriodicalIF":4.8,"publicationDate":"2025-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144115898","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

Emissive Covalent organic Frameworks: Hydrogen bond switch-driven metal ion sensing and Cellular imaging 发射共价有机框架：氢键开关驱动的金属离子传感和细胞成像

IF 4.8 3区材料科学

Microporous and Mesoporous Materials Pub Date : 2025-05-17 DOI: 10.1016/j.micromeso.2025.113687

San-Min Si , Zhitao Wang , Yanju Huang , Xiu-Mei Li , Hui Li

{"title":"Emissive Covalent organic Frameworks: Hydrogen bond switch-driven metal ion sensing and Cellular imaging","authors":"San-Min Si , Zhitao Wang , Yanju Huang , Xiu-Mei Li , Hui Li","doi":"10.1016/j.micromeso.2025.113687","DOIUrl":"10.1016/j.micromeso.2025.113687","url":null,"abstract":"<div><div>Covalent organic frameworks (COFs) with highly conjugated π skeletons hold great promise for developing emissive materials. However, designing tunable and highly emissive COFs remains a significant challenge. In this study, we introduce hydrazone-linked COFs (HL-COF and HL-COF-OH) that exhibit exceptional and tunable emission properties through hydrogen bond interactions in their frameworks. Notably, the emission wavelengths of HL-COF and HL-COF-OH can be tuned from 473 nm (blue) to 536 nm (yellow) in water. HL-COF-OH demonstrates superior sensitivity and selectivity for metal ion sensing compared to HL-COF, owing to the presence of open hydrogen bonds. The detection limit for Cu<sup>2+</sup> was reduced to 208 nmol, positioning it among the best-performing COFs reported to date. Additionally, these emissive COFs successfully detected Cu<sup>2+</sup> in cells without causing cytotoxicity, marking a significant milestone in the field. This strategy opens new avenue for designing color-tunable emissive materials for biological applications.</div></div>","PeriodicalId":392,"journal":{"name":"Microporous and Mesoporous Materials","volume":"395 ","pages":"Article 113687"},"PeriodicalIF":4.8,"publicationDate":"2025-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144125312","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

Enhancing lung cancer treatment with metal–organic frameworks 金属有机骨架强化肺癌治疗

IF 4.8 3区材料科学

Microporous and Mesoporous Materials Pub Date : 2025-05-17 DOI: 10.1016/j.micromeso.2025.113665

Kornelia Hyjek , Klaudia Dymek , Grzegorz Kurowski , Anna Boguszewska-Czubara , Sylwia Wnorowska , Anna Pajdak , Łukasz Kuterasiński , Witold Piskorz , Anna Gancarczyk , Marzena Iwaniszyn , Arturo Cubi , Maryna Khalavka , Przemysław J. Jodłowski

{"title":"Enhancing lung cancer treatment with metal–organic frameworks","authors":"Kornelia Hyjek , Klaudia Dymek , Grzegorz Kurowski , Anna Boguszewska-Czubara , Sylwia Wnorowska , Anna Pajdak , Łukasz Kuterasiński , Witold Piskorz , Anna Gancarczyk , Marzena Iwaniszyn , Arturo Cubi , Maryna Khalavka , Przemysław J. Jodłowski","doi":"10.1016/j.micromeso.2025.113665","DOIUrl":"10.1016/j.micromeso.2025.113665","url":null,"abstract":"<div><div>This study demonstrates the potential use of Zr-based metal–organic frameworks as carriers of gradual-release chemotherapeutics for lung cancer therapy. The therapeutic efficacy of 5-fluorouracil (5-FU) was compared to that of <span><math><mi>α</mi></math></span>-cyano-4-hydroxycinnamic acid (<span><math><mi>α</mi></math></span>-CHC). The model group of UiO-66 varied the number of defects and the presence of additional amino groups, and their 5-FU and <span><math><mi>α</mi></math></span>-CHC@UiO-66 composites were examined. Their performance in drug delivery was evaluated through dry powder inhalers. The drug release kinetics from prepared composites were studied in different media, including SBF and SLF fluids. The effects of the ionic environment, the presence of an amino group on the surface of the MOF structure, and the tendency of the introduced molecule to protonate were observed. The sorption mechanisms were corroborated with DFT modeling, showing the profound impact of the –NH<sub>2</sub> groups on the adsorption energetics. For UiO-66, the mutual orientation of the aromatic rings in the molecule and the MOF linker indicate the presence of the <span><math><mi>π</mi></math></span>-<span><math><mi>π</mi></math></span> stacking. The accumulated covalent bond order between the adsorbate molecule and the MOF framework also supports the nature of the adsorption. The in vitro and in vivo studies emphasize both the safety and efficacy of the presented therapy.</div></div>","PeriodicalId":392,"journal":{"name":"Microporous and Mesoporous Materials","volume":"395 ","pages":"Article 113665"},"PeriodicalIF":4.8,"publicationDate":"2025-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144089564","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

Porous silica materials with different pore structures as hemostatic dressing for acute blood loss 不同孔结构的多孔二氧化硅材料作为急性失血止血敷料

IF 4.8 3区材料科学

Microporous and Mesoporous Materials Pub Date : 2025-05-16 DOI: 10.1016/j.micromeso.2025.113698

Yuhang Huang , Pingwei Yang , Shaokai Sun , Liyun Mao , Yunyun Zhou , Ying Liu , Juanjuan Peng , Lingzhi Zhao

{"title":"Porous silica materials with different pore structures as hemostatic dressing for acute blood loss","authors":"Yuhang Huang , Pingwei Yang , Shaokai Sun , Liyun Mao , Yunyun Zhou , Ying Liu , Juanjuan Peng , Lingzhi Zhao","doi":"10.1016/j.micromeso.2025.113698","DOIUrl":"10.1016/j.micromeso.2025.113698","url":null,"abstract":"<div><div>Porous silica materials can serve as hemostats, offering a promising approach to promote the coagulation speed. The pore structure of porous silica is a critical property, which may influence the hemostatic effectiveness, though its exact role in the hemostasis process remains unclear. Given that the key structural parameters of porous silica, including pore size, surface area, and pore volume, exhibited strong interrelationships that significantly influence each other, we prepared porous silica with pore sizes ranging from 2.5 to 50 nm to study their hemostatic effects by both in vitro and in vivo assessments. The results demonstrated that the mesoporous material MCM-41 with small pore size (2.5 nm) and high specific surface area exhibited superior contact activation capability to the coagulation pathway. In contrast, the macroporous siliceous foam (MSF) with large pore size (50 nm) and large pore volume showed enhanced absorption of blood cells and proteins. The mesoporous SBA-15 with pore size of 5.3 nm displayed intermediate properties between the two materials. The in vivo experiments showed that among the three kinds of porous silica, the MCM-41 provided the highest pro-coagulant capacity in the tail transection rat model with minor bleeding, and the MSF performed the best hemostatic effect in the femoral artery injury rat model with spurting hemorrhage. Our study elucidates the role of pore structure of porous silica as hemostats, which may give hint to the design of such materials.</div></div>","PeriodicalId":392,"journal":{"name":"Microporous and Mesoporous Materials","volume":"395 ","pages":"Article 113698"},"PeriodicalIF":4.8,"publicationDate":"2025-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144115087","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

A novel method of preparing high surface area porous gamma alumina granules from kaolin 一种利用高岭土制备高表面积多孔氧化铝颗粒的新方法

IF 4.8 3区材料科学

Microporous and Mesoporous Materials Pub Date : 2025-05-16 DOI: 10.1016/j.micromeso.2025.113697

Amit Kumar Yadav , Binod Kumar , Ravi Mohan Prasad , Sunipa Bhattacharyya

{"title":"A novel method of preparing high surface area porous gamma alumina granules from kaolin","authors":"Amit Kumar Yadav , Binod Kumar , Ravi Mohan Prasad , Sunipa Bhattacharyya","doi":"10.1016/j.micromeso.2025.113697","DOIUrl":"10.1016/j.micromeso.2025.113697","url":null,"abstract":"<div><div>Tubular-shaped porous gamma alumina (γ-Al<sub>2</sub>O<sub>3</sub>) granules were synthesized from an unconventional source of kaolin powder using acid extraction followed by a modified oil-drop method. Different organic ingredients, including starch, sucrose, and spent tea leaf waste (STLW) and synthetic constituents like PVP and PEG, were utilized as pore-forming additives to make the granules porous and useful for adsorbent application. The resulting γ-Al<sub>2</sub>O<sub>3</sub> granules measured approximately 6 mm long and 2 mm in diameter. The influence of various parameters on the granules' formation, morphology, and stability was systematically investigated. The γ-alumina phase formation was confirmed by powder X-ray diffraction (XRD) study and Fourier-transform infrared spectroscopic analysis (FTIR). Surface morphology and specific surface area of the granules were studied using field emission scanning electron microscopy (FESEM) and N<sub>2</sub> adsorption-desorption analysis. The porous structure of the granules was validated through Barrett-Joyner-Halenda (BJH) pore size distribution analysis and FESEM imaging. The γ-alumina granules with starch as a pore-forming additive demonstrated the highest specific surface area. The unimodal distribution of pores in the mesoporous range is standard for all the batches prepared using different pore former, indicating their potential suitability for adsorption applications.</div></div>","PeriodicalId":392,"journal":{"name":"Microporous and Mesoporous Materials","volume":"395 ","pages":"Article 113697"},"PeriodicalIF":4.8,"publicationDate":"2025-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144125310","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