Microporous and Mesoporous Materials最新文献_第2页

Porous polymer-modified metal–organic framework (AM@UIO-66-NH2) for electrochemical detection of dopamine in human serum 多孔聚合物修饰金属有机骨架（AM@UIO-66-NH2）电化学检测人血清中多巴胺

IF 4.8 3区材料科学

Microporous and Mesoporous Materials Pub Date : 2025-06-04 DOI: 10.1016/j.micromeso.2025.113726

Murugesan Chandran, Barkavi Dhanasekaran, Mekala Veerapandian, Saravanan Govindaraju, Kyusik Yun

{"title":"Porous polymer-modified metal–organic framework (AM@UIO-66-NH2) for electrochemical detection of dopamine in human serum","authors":"Murugesan Chandran, Barkavi Dhanasekaran, Mekala Veerapandian, Saravanan Govindaraju, Kyusik Yun","doi":"10.1016/j.micromeso.2025.113726","DOIUrl":"10.1016/j.micromeso.2025.113726","url":null,"abstract":"<div><div>Neurotransmitters (NTs) are essential for brain functions, cognition, and behavior as they transmit, amplify, and convert cellular signals, facilitating neuronal communication and regulating physiological processes. Dopamine (DA) acts both as an NTs and a hormone, contributing to reduced insulin production and decreased lymphocyte activity within the immune system. Metal–organic frameworks (MOFs), as emerging nanomaterials for biosensing, offer high porosity, large surface areas, facile functionalization, and tunable architectures. In this study, an amine-functionalized zirconium MOF was modified with synthetic allomelanin (AM) (AM@UIO-66-NH<sub>2</sub>) for highly efficient DA detection. The morphology, elemental composition, functional groups, crystalline phases, thermal stability, surface area, and electrochemical properties of the synthesized material were characterized via spectroscopic and analytical techniques. Square wave voltammetry (SWV) and chronoamperometry (CA) were employed to assess the DA detection limit (LOD). The optimized sensor demonstrated a linear DA detection range of 30–1000 nM, with LODs of 18 nM for SWV and 24 nM for CA. High-sensitivity detection of DA in human serum was achieved. In the presence of interferents, AM@UIO-66-NH<sub>2</sub> selectively oxidized DA and maintained its stability over 100 cycles. The developed composite shows great potential for DA detection in clinical diagnostics, demonstrating excellent sensitivity, reproducibility, and stability in serum samples.</div></div>","PeriodicalId":392,"journal":{"name":"Microporous and Mesoporous Materials","volume":"396 ","pages":"Article 113726"},"PeriodicalIF":4.8,"publicationDate":"2025-06-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144231808","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

Naphthaleneimide functionalized NU-1000 as an efficient donor-acceptor photo-catalyst for the visible-light-driven oxidation of benzylamine coupling 萘酰亚胺功能化NU-1000作为一种高效的供-受体光催化剂用于可见光驱动氧化苄胺偶联反应

IF 4.8 3区材料科学

Microporous and Mesoporous Materials Pub Date : 2025-06-04 DOI: 10.1016/j.micromeso.2025.113724

Chunyu Liu, Mingxue Shao, Huadong Guo, Jiaping Cao, Rao Bao, Xianmin Guo

{"title":"Naphthaleneimide functionalized NU-1000 as an efficient donor-acceptor photo-catalyst for the visible-light-driven oxidation of benzylamine coupling","authors":"Chunyu Liu, Mingxue Shao, Huadong Guo, Jiaping Cao, Rao Bao, Xianmin Guo","doi":"10.1016/j.micromeso.2025.113724","DOIUrl":"10.1016/j.micromeso.2025.113724","url":null,"abstract":"<div><div>Metal-organic frameworks provided an advantageous platform for photo-catalysis owing to their designable structure and tunable photo-electric characteristic. However, the catalytic performance of MOFs often suffered from poor chem-stability, low visible light absorption and inefficient photogenerated charge separation. In this work, through the solvent-assisted ligand incorporation method, a carboxylate-derivatized naphthaleneimide moiety (HBNDI) was successfully integrated into pyrene-cored NU-1000 to establish a mixed-ligand BNDI-NU-1000. Photo-electric measurements and DFT calculations revealed that BNDI-NU-1000 was a typical donor-acceptor system owing to the rapid charge transfer between electron-rich pyrene and electron-deficient naphthaleneimide. Due to the synergetic effect of efficient photo-induced electron transfer and energy transfer, BNDI-NU-1000 displayed high catalytic activity in the visible-light-driven aerobic oxidation of benzylamine coupling. This study opened up a promising avenue to develop viable donor-acceptor photo-catalysts for organic transformation.</div></div>","PeriodicalId":392,"journal":{"name":"Microporous and Mesoporous Materials","volume":"396 ","pages":"Article 113724"},"PeriodicalIF":4.8,"publicationDate":"2025-06-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144231974","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

Facile synthesis of hierarchical T-type zeolites with parallel-aligned rod-like nanocrystals 具有平行排列棒状纳米晶的分级t型沸石的简易合成

IF 4.8 3区材料科学

Microporous and Mesoporous Materials Pub Date : 2025-06-04 DOI: 10.1016/j.micromeso.2025.113708

Linzhe Li, Jianhua Yang, Hammad Saulat, Jinming Lu

{"title":"Facile synthesis of hierarchical T-type zeolites with parallel-aligned rod-like nanocrystals","authors":"Linzhe Li, Jianhua Yang, Hammad Saulat, Jinming Lu","doi":"10.1016/j.micromeso.2025.113708","DOIUrl":"10.1016/j.micromeso.2025.113708","url":null,"abstract":"<div><div>Hierarchical T-type zeolites (HT zeolites) with parallel-aligned rod-like nanocrystals (∼73 nm in width) were synthesized via a facile method simply by regulating the SiO<sub>2</sub>/Al<sub>2</sub>O<sub>3</sub> molar ratio and crystallization kinetics. Selected area electron diffraction (SAED) analysis revealed that the crystallographic growth direction of the nanorods was along the <em>c</em>-axis while the short axis was along <em>a</em>- and <em>b</em>-directions. The optimized HT zeolites exhibited a framework Si/Al ratio of 2.74 and a high BET surface area (489.6 m<sup>2</sup>/g). The SiO<sub>2</sub>/Al<sub>2</sub>O<sub>3</sub> molar ratio in the synthesis gel critically influenced zeolite structure, particle size, and morphology, inducing a competing CHA phase with a walnut-shaped morphology with lower ratio of 8. Highly crystalline HT zeolites were obtained at 373 K after 48 h, following an S-shaped crystallization curve, where rod-like nanocrystals grew in a parallel alignment while maintaining nearly constant widths. To investigate the nucleation and crystal growth behavior, Gualtieri model analysis and time trace experiments at different temperature were further conducted. The activation energies for nucleation and crystal growth, calculated from the Arrhenius relationship in the temperature range of 353–403 K, were found to be 43.0 ± 3.2 and 36.5 ± 1.7 kJ mol<sup>−1</sup> respectively, indicating nucleation was the rate-limiting step. The HT zeolites exhibited a CO<sub>2</sub> adsorption capacity of 4.01 mol/kg at 1 bar and 273 K, with CO<sub>2</sub>/N<sub>2</sub> initial and final adsorption ratios of 40.4 and 5.4, respectively. This work presents a simple and effective method for preparing hierarchical T zeolites, which can serve as a possible reference for the design of other hierarchical materials.</div></div>","PeriodicalId":392,"journal":{"name":"Microporous and Mesoporous Materials","volume":"396 ","pages":"Article 113708"},"PeriodicalIF":4.8,"publicationDate":"2025-06-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144211977","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

Diffusion in nanoporous materials in the focus of an IUPAC Initiative: The innovative power of “Microscopic” measuring techniques 扩散在纳米多孔材料在IUPAC倡议的焦点：“微观”测量技术的创新力量

IF 4.8 3区材料科学

Microporous and Mesoporous Materials Pub Date : 2025-06-03 DOI: 10.1016/j.micromeso.2025.113725

Christian Chmelik , Roger Gläser , Jürgen Haase , Seungtaik Hwang , Jörg Kärger , Patricia Seidel

{"title":"Diffusion in nanoporous materials in the focus of an IUPAC Initiative: The innovative power of “Microscopic” measuring techniques","authors":"Christian Chmelik , Roger Gläser , Jürgen Haase , Seungtaik Hwang , Jörg Kärger , Patricia Seidel","doi":"10.1016/j.micromeso.2025.113725","DOIUrl":"10.1016/j.micromeso.2025.113725","url":null,"abstract":"<div><div>The diffusion of guest molecules in the interior of nanoporous materials is a phenomenon of great interest for both fundamental research and practical application. This concerns, in particular, the use of these materials for matter-upgrading by separation, purification and conversion, since the gain in value-added products can never be faster than allowed by the rate of mass transfer between the interior of such systems and their surroundings. In view of the complexity of these systems, the quantitation of diffusion in their interior is far from trivial and requires, as a rule, the introduction and consideration of a series of parameters. Measurement of these parameters often necessitates, in turn, a number of different measuring techniques. The present paper introduces into this multitude of parameters and the options of their measurement. It follows the classification as recently presented in an IUPAC Technical Report, dealing with the measurement of the determining parameters of diffusion in nanoporous materials. Particular attention is given to the so-called microscopic techniques and their distinguished role within the arsenal of measuring techniques.</div></div>","PeriodicalId":392,"journal":{"name":"Microporous and Mesoporous Materials","volume":"396 ","pages":"Article 113725"},"PeriodicalIF":4.8,"publicationDate":"2025-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144231809","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

Preparation of Al-rich hierarchical zeolites by conventional alkali treatment: Defects as mesopore directing agents 常规碱处理制备富铝分级沸石：作为介孔导向剂的缺陷

IF 4.8 3区材料科学

Microporous and Mesoporous Materials Pub Date : 2025-06-02 DOI: 10.1016/j.micromeso.2025.113723

Xingyang Li, Dandan Zhang, Quanwei Zheng, Jiakui Chang, Xuan Liu, Renchun Yang, Meng Pan

{"title":"Preparation of Al-rich hierarchical zeolites by conventional alkali treatment: Defects as mesopore directing agents","authors":"Xingyang Li, Dandan Zhang, Quanwei Zheng, Jiakui Chang, Xuan Liu, Renchun Yang, Meng Pan","doi":"10.1016/j.micromeso.2025.113723","DOIUrl":"10.1016/j.micromeso.2025.113723","url":null,"abstract":"<div><div>In industry, it is highly desired to prepare Al-rich hierarchical zeolites by conventional alkali treatment without the use of costly chemical and special process. Here we provide an alternative strategy in which crystal defects are employed as mesopore directing agents. The effective elimination of the intracrystalline defects induces the generation of mesoporous structure in the alkali treatment process. Thus, the limitation originating from the framework Si/Al ratio of parent zeolite is circumvented. This strategy holds all merits of the conventional alkali treatment approach, which is industrially unfavorable. As an example, the Al-rich hierarchical ZSM-5 zeolites with very low Si/Al ratios were successfully prepared. The obtained Al-rich hierarchical zeolites were characterized by XRD, XRF, SEM, TEM, N<sub>2</sub> adsorption-desorption, in-situ IR, MAS NMR and NH<sub>3</sub>-TPD. The results showed that Si/Al ratios of the prepared hierarchical ZSM-5 zeolites were around 10 and the increases of external surface area and mesoporous volume were up to 2.6 and 3.7 times respectively in comparison with parent zeolite. Moreover, the constructed mesopores were interconnected open channels. In the catalytic cracking of 1,3,5-triisopropylbenzene, the Al-rich hierarchical ZSM-5 zeolites exhibited an excellent performance because of the improved diffusion of reactant and product.</div></div>","PeriodicalId":392,"journal":{"name":"Microporous and Mesoporous Materials","volume":"396 ","pages":"Article 113723"},"PeriodicalIF":4.8,"publicationDate":"2025-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144203776","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

Mesoporous silica/reduced graphene oxide composite for fluoxetine and trimethoprim adsorption 介孔二氧化硅/还原氧化石墨烯复合材料对氟西汀和甲氧苄啶的吸附

IF 4.8 3区材料科学

Microporous and Mesoporous Materials Pub Date : 2025-06-01 DOI: 10.1016/j.micromeso.2025.113713

Ali Dogancan Dogan , Muge Sari Yilmaz , Hanife Sari Erkan

{"title":"Mesoporous silica/reduced graphene oxide composite for fluoxetine and trimethoprim adsorption","authors":"Ali Dogancan Dogan , Muge Sari Yilmaz , Hanife Sari Erkan","doi":"10.1016/j.micromeso.2025.113713","DOIUrl":"10.1016/j.micromeso.2025.113713","url":null,"abstract":"<div><div>In this study, a mesoporous silica/reduced graphene oxide (MS-rGO) composite was synthesised and characterised for the adsorption of two persistent pharmaceutical micropollutants, fluoxetine (FLX) and trimethoprim (TMP), from water. The adsorption performance of the MS-rGO composite was evaluated under various conditions including adsorbent dosage, pH, initial drug concentration, time and temperature. The results showed effective removal of both drugs, with FLX adsorption capacity reaching 13.07 mg/g (corresponding to 74.8 % removal) under conditions of 0.0025 g MS-rGO, pH 8 and 15 min, and TMP adsorption capacity reaching 17.60 mg/g (88.1 % removal) under conditions of 0.0025 g MS-rGO, pH 9 and 30 min, both at an initial concentration of 5 mg/L. Adsorption followed pseudo-second-order kinetics (R<sup>2</sup> > 0.9977) and Langmuir isotherm models (R<sup>2</sup> > 0.9921) with maximum capacities of 102.04 mg/g for FLX and 52.91 mg/g for TMP. Thermodynamic parameters (ΔH°, ΔS°, ΔG°) confirmed that the adsorption was endothermic and spontaneous, mainly driven by electrostatic interactions between the MS-rGO composite and the drugs. These results highlight the potential of the MS-rGO composite as a promising adsorbent for the removal of pharmaceutical micropollutants from aqueous systems, offering rapid adsorption in a short time; however, its reusability is limited, with removal efficiencies decreasing by almost 50 % after three cycles.</div></div>","PeriodicalId":392,"journal":{"name":"Microporous and Mesoporous Materials","volume":"396 ","pages":"Article 113713"},"PeriodicalIF":4.8,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144222144","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

3D KIT-6 silica: A robust, recyclable adsorbent for the removal of organic dyes from water 3D KIT-6二氧化硅：一种坚固的，可回收的吸附剂，用于从水中去除有机染料

IF 4.8 3区材料科学

Microporous and Mesoporous Materials Pub Date : 2025-05-29 DOI: 10.1016/j.micromeso.2025.113722

Khoa D. Nguyen , Vy K. Thai , Anh B. Nguyen , Phuoc H. Ho , Khai M. Luu , Ha V. Le

{"title":"3D KIT-6 silica: A robust, recyclable adsorbent for the removal of organic dyes from water","authors":"Khoa D. Nguyen , Vy K. Thai , Anh B. Nguyen , Phuoc H. Ho , Khai M. Luu , Ha V. Le","doi":"10.1016/j.micromeso.2025.113722","DOIUrl":"10.1016/j.micromeso.2025.113722","url":null,"abstract":"<div><div>Mesoporous silica materials like MCM-41 and SBA-15 are well-established adsorbents in many applications, yet KIT-6 stands out due to its unique three-dimensional interconnected pore network and exceptional thermal and hydrothermal stability. This study highlights KIT-6 as a tunable adsorbent for removing various dyes from wastewater, with pore sizes adjustable from 5.9 to 8.6 nm by varying hydrothermal synthesis temperatures (60–120 °C). The relationship between synthesis temperature and the structural and physicochemical properties of KIT-6 was elucidated through powder X-ray diffraction (PXRD), transmission electron microscopy (TEM), nitrogen physisorption, thermogravimetric analysis (TGA), and Fourier-transform infrared spectroscopy (FT-IR). Adsorption performance was evaluated for cationic and anionic dyes. KIT-6 synthesized at 80 °C demonstrated superior capacity for cationic dyes, achieving 227 mg g<sup>−1</sup> for rhodamine B (RhB) and over 200 mg g<sup>−1</sup> for malachite green, methylene blue, and crystal violet, outperforming previously reported silica-based mesoporous materials under comparable conditions. Conversely, KIT-6 showed negligible affinity for anionic dyes (e.g., sunset yellow, quinoline yellow, methyl orange), except for congo red, which exhibited an exceptional capacity of ∼432 mg g<sup>−1</sup>, likely due to the presence of amine groups in its molecular structure. Notably, the remarkable thermal stability of KIT-6 enabled sustainable reuse of the adsorbent. The RhB-adsorbed KIT-6 was easily regenerated by combusting the adsorbate <em>via</em> a thermal treatment in air. The regenerated KIT-6 retained over 85% of its pristine RhB adsorption capacity after five adsorption-regeneration cycles. These findings introduce KIT-6 as a highly effective and recyclable adsorbent for the dye removal in wastewater treatment.</div></div>","PeriodicalId":392,"journal":{"name":"Microporous and Mesoporous Materials","volume":"396 ","pages":"Article 113722"},"PeriodicalIF":4.8,"publicationDate":"2025-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144240012","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

Post-modified fluorine-functionalized covalent organic frameworks with excellent stability and hydrophobicity and their application in fipronil adsorption 稳定性和疏水性优异的后改性氟官能化共价有机骨架及其在氟虫腈吸附中的应用

IF 4.8 3区材料科学

Microporous and Mesoporous Materials Pub Date : 2025-05-29 DOI: 10.1016/j.micromeso.2025.113710

Pengda Hu , Xiaoli Ma , Ruixia Yang , Xiaoyan Zhang , Xiaoyu Huang , Hua Yuan , Qiaohong Peng

{"title":"Post-modified fluorine-functionalized covalent organic frameworks with excellent stability and hydrophobicity and their application in fipronil adsorption","authors":"Pengda Hu , Xiaoli Ma , Ruixia Yang , Xiaoyan Zhang , Xiaoyu Huang , Hua Yuan , Qiaohong Peng","doi":"10.1016/j.micromeso.2025.113710","DOIUrl":"10.1016/j.micromeso.2025.113710","url":null,"abstract":"<div><div>We designed and synthesized two fluorine-functionalized covalent organic frameworks (F-COFs) TAPT-DHTA-COF-(CF<sub>3</sub>) and TAPT-DHTA-COF-3F via post-synthetic Povarov reaction. The irreversible conversion of imine linkages into ultra-stable quinoline moieties preserved crystallinity and conferred exceptional chemical stability under harsh conditions. Fluorine functionalization conferred exceptional hydrophobicity to the F-COFs, as evidenced by water contact angles of 133°. Adsorption studies revealed that fluorine substituents significantly modulate fipronil uptake, with TAPT-DHTA-COF-3F achieving a capacity of 193.9 mg g<sup>−1</sup>—2.5-fold higher than non-fluorinated analogs, which can be ascribed to synergistic hydrophobic and fluorine-fluorine interactions. In addition, the F-COF possessing 3,4,5-trifluorophenyl moiety outperforms its 4-trifluoromethylphenyl counterpart due to its higher specific surface area and greater hydrophobicity and fluorophilicity. These results establish fluorinated COFs as promising platforms for high-efficiency environmental remediation, particularly for persistent halogenated contaminants.</div></div>","PeriodicalId":392,"journal":{"name":"Microporous and Mesoporous Materials","volume":"396 ","pages":"Article 113710"},"PeriodicalIF":4.8,"publicationDate":"2025-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144222145","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

Revolutionizing the aptitude of nanoscale magnetic porous 3D graphene for continuous removal of Congo red from aqueous environments: Insights from RSM methodology 革命性的纳米级磁性多孔3D石墨烯在水环境中连续去除刚果红的能力：来自RSM方法的见解

IF 4.8 3区材料科学

Microporous and Mesoporous Materials Pub Date : 2025-05-29 DOI: 10.1016/j.micromeso.2025.113705

Manijeh Tavana, Nasser Arsalani

{"title":"Revolutionizing the aptitude of nanoscale magnetic porous 3D graphene for continuous removal of Congo red from aqueous environments: Insights from RSM methodology","authors":"Manijeh Tavana, Nasser Arsalani","doi":"10.1016/j.micromeso.2025.113705","DOIUrl":"10.1016/j.micromeso.2025.113705","url":null,"abstract":"<div><div>The present work addresses the issue of environmental contamination caused by coloured pollutants, explicitly focusing on eliminating Congo Red (CR), an azo dye known for its stability and non-biodegradability, from water sources. The challenges associated with conventional adsorption methods are articulated, leading to the introduction of a new magnetic porous three-dimensional graphene nanohybrid (MnFe<sub>2</sub>O<sub>4</sub>-3DG) for dye removal. The synthesis of three-dimensional graphene (3DG) and the MnFe<sub>2</sub>O<sub>4</sub>-3DG nanohybrid was characterized using various techniques like FTIR, SEM- EDX, EDS, TEM, XRD, BET, VSM, TGA, and UV–Vis spectroscopy. Experimental optimization is executed with Response Surface Methodology (RSM) to assess the influence of crucial parameters such as pH, contact time, temperature, initial concentration, and adsorbent dose on removal efficiency. The MnFe<sub>2</sub>O<sub>4</sub>-3DG nanohybrid, under optimal conditions such as an initial concentration of 20 mg/L, a pH of 7, a contact time of 60 min, and an adsorbent dose of 0.4 g/L, exhibits a remarkable removal efficiency of 94.15 %, thus, this result fits well with the Langmuir model (R<sup>2</sup> = 0.999), and kinetic analysis indicates a pseudo-second-order (R<sup>2</sup> = 0.999), intra particle diffusion (R<sup>2</sup> = 0.887) reactions. Thermodynamic studies reveal an exothermic adsorption process. Based on the findings, the MnFe<sub>2</sub>O<sub>4</sub>-3DG nanohybrid is noted as a highly effective and cost-efficient adsorbent for water purification systems. The results indicate that the nanohybrid mentioned will have a high potential for use in large-scale and industrial water and wastewater treatment systems. In addition, it offers an effective solution to eliminating environmental pollution caused by coloured pollutants, such as Congo red.</div></div>","PeriodicalId":392,"journal":{"name":"Microporous and Mesoporous Materials","volume":"396 ","pages":"Article 113705"},"PeriodicalIF":4.8,"publicationDate":"2025-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144240643","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

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