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Ebrahim A, Ghali M, El-Moneim AA. Microporous Zr-metal-organic frameworks based-nanocomposites for thermoelectric applications. Sci Rep 2024; 14:13067. [PMID: 38844480 PMCID: PMC11156915 DOI: 10.1038/s41598-024-62317-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2024] [Accepted: 05/15/2024] [Indexed: 06/09/2024] Open
Abstract
In the area of energy storage and conversion, Metal-Organic Frameworks (MOFs) are receiving more and more attention. They combine organic nature with long-range order and low thermal conductivity, giving them qualities to be potentially attractive for thermoelectric applications. To make the framework electrically conductive so far, thermoelectricity in this class of materials requires infiltration by outside conductive guest molecules. In this study, an in-situ polymerization of conductive polyaniline inside the porous structure of MOF-801 was conducted to synthesize PANi@MOF-801 nanocomposites for thermoelectrical applications. The growth of polyaniline chains of different loadings inside the host MOF matrix generally enhanced bulk electrical conductivity by about 6 orders of magnitude, leading to Seebeck coefficient value of -141 µVK-1 and improved thermal stability. The unusual increase in electrical conductivity was attributed to the formation of highly oriented conductive PANi chains inside the MOF pores, besides host-guest physical interaction, while the Seebeck coefficient enhancement was because of the energy filtering effect of the developed structure. Modulating the composition of PANi@MOF-801 composites by varying the aniline: MOF-801 ratio in the synthesis bath from 2:1 and 1:1 to 1:2 leads to a change in the semiconductor properties from p-type semiconductor to n-type. Among the examined composites with n-type semiconducting properties exhibited the highest ZT value, 0.015, and lowest thermal conductivity, 0.24 Wm-1 K-1. The synthesized composites have better performance than those recently reported for a similar category of thermoelectric materials related to MOF-based composites.
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Affiliation(s)
- Asmaa Ebrahim
- School of Basic and Applied Science, Egypt-Japan University of Science and Technology, New Borg El Arab City, Alexandria, 21934, Egypt.
- Graphene Center of Excellence for Energy and Electronic Applications, Egypt-Japan University of Science and Technology, New Borg El Arab City, Alexandria, 21934, Egypt.
| | - Mohsen Ghali
- School of Basic and Applied Science, Egypt-Japan University of Science and Technology, New Borg El Arab City, Alexandria, 21934, Egypt
- Physics Department, Faculty of Science, Kafrelshiekh University, Kafr el-Sheikh, Egypt
| | - A A El-Moneim
- School of Basic and Applied Science, Egypt-Japan University of Science and Technology, New Borg El Arab City, Alexandria, 21934, Egypt
- Graphene Center of Excellence for Energy and Electronic Applications, Egypt-Japan University of Science and Technology, New Borg El Arab City, Alexandria, 21934, Egypt
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Kong X, Ma J, Garg S, Waite TD. Tailored Metal-Organic Frameworks for Water Purification: Perfluorinated Fe-MOFs for Enhanced Heterogeneous Catalytic Ozonation. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2024; 58:8988-8999. [PMID: 38725314 DOI: 10.1021/acs.est.4c01133] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2024]
Abstract
An industrially viable catalyst for heterogeneous catalytic ozonation (HCO) in water purification requires the characteristics of good dispersion of active species on its surface, efficient electron transfer for ozone decay, and maximum active species utilization. While metal-organic frameworks (MOFs) represent an attractive platform for HCO, the metal nodes in the unmodified MOFs exhibit low catalytic activity. Herein, we present a perfluorinated Fe-MOF catalyst by substituting H atoms on the metalated ligands with F atoms (termed 4F-MIL-88B) to induce structure evolution. The Lewis acidity of 4F-MIL-88B was enhanced via the formation of Fe nodes, tailoring the electron distribution on the catalyst surface. As a result of catalyst modification, the rate constant for degradation of the target compounds examined increased by ∼700% compared with that observed for the unmodified catalyst. Experimental evidence and theoretical calculations showed that the modulated polarity and the enhanced electron transfer between the catalyst and ozone molecules contributed to the adsorption and transformation of O3 to •OH on the catalyst surface. Overall, the results of this study highlight the significance of tailoring the metalated ligands to develop highly efficient and stable MOF catalysts for HCO and provide an in-depth mechanistic understanding of their structure-function evolution, which is expected to facilitate the applications of nanomaterial-based processes in water purification.
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Affiliation(s)
- Xiangtong Kong
- Water Research Centre, School of Civil and Environmental Engineering, The University of New South Wales, Sydney, NSW 2052, Australia
| | - Jinxing Ma
- Key Laboratory for City Cluster Environmental Safety and Green Development of the Ministry of Education, School of Ecology, Environment and Resources, Guangdong University of Technology, Guangzhou 510006, China
| | - Shikha Garg
- Water Research Centre, School of Civil and Environmental Engineering, The University of New South Wales, Sydney, NSW 2052, Australia
| | - T David Waite
- Water Research Centre, School of Civil and Environmental Engineering, The University of New South Wales, Sydney, NSW 2052, Australia
- UNSW Centre for Transformational Environmental Technologies (CTET), Yixing, Jiangsu Province 214206, P.R. China
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Aghajani Hashjin M, Zarshad S, Motejadded Emrooz HB, Sadeghzadeh S. Enhanced atmospheric water harvesting efficiency through green-synthesized MOF-801: a comparative study with solvothermal synthesis. Sci Rep 2023; 13:16983. [PMID: 37813977 PMCID: PMC10562380 DOI: 10.1038/s41598-023-44367-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2023] [Accepted: 10/06/2023] [Indexed: 10/11/2023] Open
Abstract
Adsorption-based atmospheric water harvesting has emerged as a compelling solution in response to growing global water demand. In this context, Metal-organic frameworks (MOFs) have garnered considerable interest due to their unique structure and intrinsic porosity. Here, MOF 801 was synthesized using two different methods: solvothermal and green room temperature synthesis. Comprehensive characterization indicated the formation of MOF-801 with high phase purity, small crystallite size, and excellent thermal stability. Nitrogen adsorption-desorption analysis revealed that green-synthesized MOF-801 possessed an 89% higher specific surface area than its solvothermal-synthesized counterpart. Both adsorbents required activation at a minimum temperature of 90 °C for optimal adsorption performance. Additionally, green-synthesized MOF-801 demonstrated superior adsorption performance compared to solvothermal-synthesized MOF-801, attributed to its small crystal size (around 66 nm), more hydrophilic functional groups, greater specific surface area (691.05 m2/g), and the possibility of having a higher quantity of defects. The maximum water adsorption capacity in green-synthesized MOF-801 was observed at 25 °C and 80% relative humidity, with a value of 41.1 g/100 g, a 12% improvement over the solvothermal-synthesized MOF-801. Remarkably, even at a 30% humidity level, green-synthesized MOF-801 displayed a considerable adsorption capacity of 31.5 g/100 g. Importantly, MOF-801 exhibited long-term effectiveness in multiple adsorption cycles without substantial efficiency decline.
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Affiliation(s)
- Mohammad Aghajani Hashjin
- Nanotechnology Department, School of Advanced Technologies, Iran University of Science and Technology (IUST), Narmak, Tehran, 16846, Iran
| | - Shadi Zarshad
- Nanotechnology Department, School of Advanced Technologies, Iran University of Science and Technology (IUST), Narmak, Tehran, 16846, Iran
| | - Hosein Banna Motejadded Emrooz
- Nanotechnology Department, School of Advanced Technologies, Iran University of Science and Technology (IUST), Narmak, Tehran, 16846, Iran.
| | - Sadegh Sadeghzadeh
- Nanotechnology Department, School of Advanced Technologies, Iran University of Science and Technology (IUST), Narmak, Tehran, 16846, Iran
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Korobiichuk I, Mel'nick V, Ostapenko Z, Ruzhinska L. Study of heat and mass transfer processes during extraction of plant raw materials under the influence of ultrasound. ULTRASONICS SONOCHEMISTRY 2023; 98:106512. [PMID: 37413915 PMCID: PMC10345156 DOI: 10.1016/j.ultsonch.2023.106512] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/13/2023] [Revised: 06/18/2023] [Accepted: 06/30/2023] [Indexed: 07/08/2023]
Abstract
Theoretical analysis of the process of biologically active substances (BAS) extraction from plant raw materials in conditions of ultrasonic action and without it to describe the kinetics of the process has been conducted. A mathematical model of the process of BAS extraction from plant raw materials to establish the dependence of changes in the concentration of BAS in the volume of cells in the intercellular space and in the main volume of the extractant has been developed. On the basis of the solution of the mathematical model the duration of the model of BAS extraction process from plant raw materials has been established, results show that the duration of the process of extraction of oil from plant raw materials in an acoustic extractor decreases by 1.5 times ultrasonic extraction can be used for the extraction of biologically active substances, such as essential oils, lipids and dietary supplements from plants.
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Affiliation(s)
- Igor Korobiichuk
- Łukasiewicz Research Network - Industrial Research Institute for Automation and Measurements PIAP, Warsaw, Poland.
| | - Viktorij Mel'nick
- National Technical University of Ukraine "Igor Sikorsky Kyiv Polytechnic Institute", Kyiv, Ukraine
| | - Zhanna Ostapenko
- National Technical University of Ukraine "Igor Sikorsky Kyiv Polytechnic Institute", Kyiv, Ukraine
| | - Ludmila Ruzhinska
- National Technical University of Ukraine "Igor Sikorsky Kyiv Polytechnic Institute", Kyiv, Ukraine
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Wang T, Zhao H, Zhao X, Liu D. Construction of defective zirconium-based metal-organic frameworks for enhanced removal of toxic selenite: performance and mechanism studies. J Colloid Interface Sci 2023; 647:488-498. [PMID: 37271093 DOI: 10.1016/j.jcis.2023.05.159] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2023] [Revised: 05/12/2023] [Accepted: 05/24/2023] [Indexed: 06/06/2023]
Abstract
The development of effective adsorbents for the adsorption and removal of toxic selenite (SeO32-) from wastewater is urgently required but challenging. Herein, formic acid (FA), a monocarboxylic acid, was used as a template to construct serial defective Zr-Fumarate (Fum) -FA based on a green and facile preparation method. Physicochemical characterization shows that the defect degree of Zr-Fum-FA can be flexibly controlled by regulating the amount of FA to be added. Owing to rich defect units, the diffusion and mass transfer of guest SeO32- into the channel can be boosted. Particularly, Zr-Fum-FA-6 with the most defects exhibits superior adsorption capacity (519.6 mg g-1) and rapid adsorption equilibrium (∼200 min). The adsorption isotherms and kinetics can be well described by the Langmuir and pseudo-second-order kinetic models. Moreover, this adsorbent possesses excellent resistance towards co-existing ions, high chemical stability and good applicability in a broad pH range of 3-10. Thus, our study provides a promising adsorbent for SeO32-, and more importantly, it proposes a strategy for rationally tailoring the adsorption behavior of adsorbents via defect construction.
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Affiliation(s)
- Ting Wang
- State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing 100029, China
| | - Huifang Zhao
- State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing 100029, China
| | - Xudong Zhao
- College of Chemical and Biological Engineering, Taiyuan University of Science and Technology, Taiyuan 030012, China.
| | - Dahuan Liu
- State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing 100029, China; College of Chemical Engineering, Qinghai University, Xining 810016, China.
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Zr-Based Metal-Organic Frameworks for Green Biodiesel Synthesis: A Minireview. Bioengineering (Basel) 2022; 9:bioengineering9110700. [DOI: 10.3390/bioengineering9110700] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2022] [Revised: 11/06/2022] [Accepted: 11/15/2022] [Indexed: 11/19/2022] Open
Abstract
Metal–organic frameworks (MOFs) have widespread application prospects in the field of catalysis owing to their functionally adjustable metal sites and adjustable structure. In this minireview, we summarize the current advancements in zirconium-based metal–organic framework (Zr-based MOF) catalysts (including single Zr-based MOFs, modified Zr-based MOFs, and Zr-based MOF derivatives) for green biofuel synthesis. Additionally, the yields, conversions, and reusability of Zr-based MOF catalysts for the production of biodiesel are compared. Finally, the challenges and future prospects regarding Zr-based MOFs and their derivatives for catalytic application in the biorefinery field are highlighted.
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Metal-organic framework as a heterogeneous catalyst for biodiesel production: A review. CHEMICAL ENGINEERING JOURNAL ADVANCES 2022. [DOI: 10.1016/j.ceja.2022.100415] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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Abasheeva KD, Demakov PA, Dybtsev DN, Fedin VP. CRYSTAL STRUCTURE OF COORDINATION COBALT(II) AND ZINC(II) POLYMERS WITH 1,4-DIAZABICYCLO[2.2.2]OCTANE N,N′-DIOXIDE. J STRUCT CHEM+ 2022. [DOI: 10.1134/s0022476622080169] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Photo-Induced Preparation of Ag@MOF-801 Composite Based Heterogeneous Nanocatalyst for the Production of Biodiesel. Catalysts 2022. [DOI: 10.3390/catal12050533] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
Hybrid materials based on metal-organic frameworks (MOFs) and nanoparticles (NPs) have gained considerable popularity in a variety of applications. Particularly, these types of materials have demonstrated excellent efficiency in heterogeneous catalysis due to the synergistic effect between the components. Herein, we report a simple, eco-friendly, photocatalytic method for the fabrication of Zr containing MOF-801 and a silver (Ag) NPs-based hybrid (Ag@MOF-801). In this method, the photocatalytic property of the central metal ion (Zr) of MOF was exploited to promote the formation and deposition of Ag NPs on the surface of the MOF-801 under the irradiation of visible light. The successful incorporation of Ag NPs was ascertained by powder X-ray diffraction (XRD) and UV-Vis analysis, while the morphology and surface area of the sample was determined by N2 adsorption–desorption and scanning electron microscopy (SEM), respectively. The resulting Ag@MOF-801 hybrid served as a highly efficient catalyst for the transesterification of used vegetable oil (UVO) for the production of biodiesel. The Ag@MOF-801 catalyst exhibited superior catalytic activity compared to its pristine MOF-801 counterpart due to the enhanced surface area of the material.
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