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Dissertations / Theses on the topic 'Zeolitic imidazolate framework (ZIF)'

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Published: 4 June 2025

Last updated: 1 August 2025

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1

Abdulla, Beyar. "Nanocellulose surface functionalization for in-situ growth of zeolitic imidazolate framework 67 and 8." Thesis, Uppsala universitet, Nanoteknologi och funktionella material, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-417650.

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This master’s thesis was conducted at the Department of Nanotechnology and Functional Materials at Ångström Laboratory as part of an on-going project to develop hybrid nanocomposites from Cladophora cellulose and a sub-type of metal-organic frameworks; zeolitic imidazolate frameworks (ZIFs). By utilizing a state-of-the-art interfacial synthesis approach, in-situ growth of ZIF particles on the cellulose could be achieved. TEMPO-mediated oxidation was diligently used to achieve cellulose nanofibers with carboxylate groups on their surfaces. These were ion-exchanged to promote growth of ZIF parti

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2

Zhang, Chen. "Zeolitic imidazolate framework (ZIF)-based membranes and sorbents for advanced olefin/paraffin separations." Diss., Georgia Institute of Technology, 2014. http://hdl.handle.net/1853/53422.

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Propylene is one of the most important feedstocks of the petrochemical industry with an estimated 2015 worldwide demand of 100 million tons. Retrofitting conventional C3 splitters is highly desirable due to the huge amount of thermal energy required to separate propylene from propane. Membrane separation is among the alternatives that both academia and industry have actively studied during the past decades, however; many challenges remain to advance membrane separation as a scalable technology for energy-efficient propylene/propane separations. The overarching goal of this research is to prov

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3

Lee, Dustin. "DEVELOPMENT OF ZEOLITIC IMIDAZOLATE FRAMEWORKS FOR ENHANCING POST-COMBUSTION CO2 CAPTURE." DigitalCommons@CalPoly, 2020. https://digitalcommons.calpoly.edu/theses/2238.

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Post-combustion CO2 capture is a promising approach for complementing other strategies to mitigate climate change. Liquid absorption is currently used to capture CO2 from post-combustion flue gases. However, the high energy cost required to regenerate the liquid absorbents is a major drawback for this process. As a result, solid sorbents have been investigated extensively in recent years as alternative media to capture CO2 from flue gases. For example, metal organic frameworks (MOFs) are nanoporous materials that have high surface areas, large pore volumes, and flexible designs. A large number

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4

Gallaba, Gallaba Mudiyanselage Dinuka Harshana. "AN EXPERIMENTAL STUDY OF STRUCTURAL DEFORMATION AND “GATE OPENING” OF ZEOLITIC IMIDAZOLATE FRAMEWORK-8 UPON GAS SORPTION: THERMODYNAMIC AND KINETIC EVIDENCE." OpenSIUC, 2020. https://opensiuc.lib.siu.edu/dissertations/1858.

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Volumetric adsorption experiments were conducted over three sorbates in Zeolitic Imidazolate Framework – 8 (ZIF-8). The sorption isotherms were measured at low temperatures. The study included carbon monoxide sorption in ZIF-8, xenon in ZIF-8, and methane sorption in ZIF-8. As a metal-organic framework that has been investigated thoroughly for its remarkable characteristics, ZIF-8 interactions with the above three sorbates has revealed some new features. Each of these systems offered a unique opportunity to study the physical properties of the sorbate and ZIF-8 and the thermodynamic responses

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5

Keser, Nilay. "Production And Performance Evaluation Of Zif-8 Based Binary And Ternary Mixed Matrix Membranes." Master's thesis, METU, 2012. http://etd.lib.metu.edu.tr/upload/12614571/index.pdf.

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Mixed matrix membranes (MMMs) have gained importance because they combine the desirable properties of the polymers and the organic/inorganic filler materials and they may have a very big potential. In this study polyethersulfone (PES) was used as polymeric material, and Zeolitic Imidazolate Framework-8 (ZIF-8) was used as porous filler material, and 2-hydroxy 5-methyl aniline(HMA), was used as a third component in membrane formulation. In this study, ZIF-8 crystals were synthesized with varying particle sizes, and a novel recycling methodology was developed to improve the efficiency of ZIF-8 p

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6

Risaliti, Giulio. "Determinazione della performance di membrane composite per la purificazione di gas." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2021. http://amslaurea.unibo.it/22411/.

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In questo elaborato vengono presentati i risultati di una attività sperimentale incentrata sulla ricerca di membrane a matrice mista per la separazione di gas da miscele. In questo lavoro viene descritta la preparazione di membrane in polisulfone e membrane a matrice mista polisulfone con ZIF-8 a quattro diversi caricamenti percentuali, PSf+ZIF-8 2%, 4%, 8% e 16%. Vengono anche esposti i risultati delle prove di caratterizzazione di tali membrane. E' stato condotto un esame attraverso microscopia elettronica a scansione (SEM) sulla sezione e sulla superficie delle cinque membrane. Sono esposti

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7

Gallaba, G. M. Dinuka Harshana. "STUDY OF XENON ADSORPTION ON ZEOLITIC IMIDAZOLATE FRAMEWORK - 8." OpenSIUC, 2014. https://opensiuc.lib.siu.edu/theses/1581.

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The adsorption isotherms can be used to study the properties of a sorbent and to determine the binding energy between a sorbent and a gas that is adsorbed on it. This study that was carried out on a metal organic framework called "Zeolitic imidazolate framework-8" (ZIF-8) as the sorbent. ZIF -8 is known to have a flexible structure and it has shown structural transformation during gas adsorption, at different temperatures. During this study, ZIF-8 was explored using Xenon adsorption. The range of temperatures for the Xenon adsorption isotherms was between 138 K and 157.56 K. During the adsorpt

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8

Zhuang, Jia. "Synthesis of Zeolitic Imidazolate Framework-8-Based Nanocomposites and Applications." Thesis, Boston College, 2015. http://hdl.handle.net/2345/bc-ir:104169.

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Thesis advisor: Chia-Kuang Tsung<br>Thesis advisor: Eranthie Weerapana<br>Metal-Organic Frameworks (MOFs) are crystalline porous materials constructed of metal ions and organic linkers, and have been widely utilized in gas storage, sensing, and chromatographic separation. The combination of MOF nanoparticles with other materials will broaden the utilization of MOF materials to a great extent. Several approaches for creating composites with the MOF, Zeolitic Imidazolate Framework-8 (ZIF-8), have been developed: dye and model drug molecules were encapsulated in ZIF-8 pores for potential drug del

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9

Chen, Binling. "Zeolitic imidazolate frameworks (ZIFs) and their derivatives : synthesis and energy related applications." Thesis, University of Exeter, 2016. http://hdl.handle.net/10871/23299.

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Zeolitic imidazolate frameworks (ZIFs) represent a new and special class of metal organic frameworks comprised of imidazolate linkers and metal ions, with structures similar to conventional aluminosilicate zeolites. Their intrinsic porous characteristics, abundant functionalities as well as exceptional thermal and chemical stabilities, have led to a wide range of potential applications for various ZIF materials. Explosive research activities ranging from synthesis approaches to attractive applications of ZIFs have emerged in this rapidly developing field in the past 5 years. Moreover, ZIF mate

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10

Self, Katherine. "Non-classical growth mechanisms of functional inorganic crystals." Thesis, University of St Andrews, 2016. http://hdl.handle.net/10023/12012.

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This project relates to the non-classical growth of inorganic crystals with interesting morphologies that are highly desirable in industry. All crystals were synthesized via hydrothermal or solvothermal methods and their growth was studied by stopping each reaction at a range of different times, extracting the particles and analysing them using a variety of characterisation techniques. The main techniques used were scanning electron microscopy and transmission electron microscopy but other techniques, such as powder X-ray diffraction and thermal gravimetric analysis, were also employed. Decora

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11

Abdelhamid, Hani Nasser. "Lanthanide Metal-Organic Frameworks and Hierarchical Porous Zeolitic Imidazolate Frameworks : Synthesis, Properties, and Applications." Doctoral thesis, Stockholms universitet, Institutionen för material- och miljökemi (MMK), 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-146398.

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This thesis presents the synthesis, properties, and applications of two important classes of metal-organic frameworks (MOFs); lanthanide MOFs and hierarchical porous zeolitic imidazolate frameworks (ZIFs). The materials have been characterized using a wide range of techniques including diffraction, imaging, various spectroscopic techniques, gas sorption, dynamical light scattering (DLS) and thermogravimetric analysis (TGA). In Chapter 1, the unique features of MOFs and ZIFs as well as their potential applications are summarized. In Chapter 2, different characterization techniques are presented

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12

Zhao, Pu. "The structure-property relations of zeolitic imidazolate framework 7 for carbon dioxide capture." Thesis, University of Cambridge, 2015. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.709351.

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13

Avci, Civan. "Zeolitic imidazolate framework-8: control of particle size and shape and its self-assembly." Doctoral thesis, Universitat Autònoma de Barcelona, 2018. http://hdl.handle.net/10803/666786.

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Esta Tesis tiene como objetivo dar al lector una idea sobre las nuevas perspectivas abiertas en la manipulación controlada de Metal-Organic Frameworks con precisión nanométrica y sus consecuencias en las propiedades finales y aplicaciones. El presente estudio se propone crear un puente entre MOFs y Nanotecnología; es decir, enlazar las propiedades clásicas de los MOFs con nuevas funcionalidades que pueden emerger gracias a la manipulación a la nanoescala. Este puente entre los dos campos se ha llevado a cabo con un MOF icónico, llamado Zeolitic-Imidazolate Framework-8 (ZIF-8), uno de los MOFs

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14

Peralta, David. "Evaluation des Metal-Organic Frameworks en adsorption et séparation des hydrocarbures." Phd thesis, Université de Haute Alsace - Mulhouse, 2011. http://tel.archives-ouvertes.fr/tel-00730462.

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L'objectif de cette thèse était d'évaluer quelques Metal-Organic Frameworks (MOFs), choisis en fonction de leur taille de pores, de leur volume poreux et de leur stabilité thermique, en adsorption et séparation des hydrocarbures. Pour étudier le comportement général des MOFs nous avons choisi des MOFs avec des centres métalliques insaturés, des MOFs à charpente anionique et des ZIFs neutres et avons étudié leur sélectivité en séparation de trois familles d'hydrocarbures, à savoir alcanes, alcènes, aromatiques. Les MOFs à centre métallique insaturé se comportent généralement comme des zéolithes

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15

Thompson, Joshua A. "Evaluation and application of new nanoporous materials for acid gas separations." Diss., Georgia Institute of Technology, 2013. http://hdl.handle.net/1853/48983.

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Distillation and absorption columns offer significant energy demands for future development in the petrochemical and fine chemical industries. Membranes and adsorbents are attractive alternatives to these classical separation units due to lower operating cost and easy device fabrication; however, membranes possess an upper limit in separation performance that results in a trade-off between selectivity (purity) and permeability (productivity) for the target gas product, and adsorbents require the need to be water-resistant to natural gas streams in order to withstand typical gas compositions. C

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16

Schweinefuß, Maria E., Sergej Springer, Igor A. Baburin, et al. "Zeolitic imidazolate framework-71 nanocrystals and a novel SOD-type polymorph: solution mediated phase transformations, phase selection via coordination modulation and a density functional theory derived energy landscape." Royal Society of Chemistry, 2014. https://tud.qucosa.de/id/qucosa%3A36102.

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We report a rapid additive-free synthesis of nanocrystals (NCs) of RHO-type ZIF-71 (1) of composition [Zn(dcim)₂] (dcim = 4,5-dichloroimidazolate) in 1-propanol as solvent at room temperature. NC-1 has a size of 30–60 nm and exhibits permanent microporosity with a surface area (SBET = 970 m² g−¹) comparable to that of microcrystalline material. When kept under the mother solution NC-1 undergoes transformation into a novel SOD-type polymorph (2), which in turn converts into known ZIF-72 (3) with lcs topology. It is shown that microcrystals (MCs) of 2 can be favourably synthesised using 1-methyl

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17

Sneddon, Scott. "Characterisation of inorganic materials using solid-state NMR spectroscopy." Thesis, University of St Andrews, 2016. http://hdl.handle.net/10023/8239.

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This thesis uses solid-state nuclear magnetic resonance (NMR) spectroscopy and density functional theory (DFT) calculations to study local structure and disorder in inorganic materials. Initial work concerns microporous aluminophosphate frameworks, where the importance of semi-empirical dispersion correction (SEDC) schemes in structural optimisation using DFT is evaluated. These schemes provide structures in better agreement with experimental diffraction measurements, but very similar NMR parameters are obtained for any structures where the atomic coordinates are optimised, owing to the simila

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18

Urumese, Ancila. "Zeolitic Imidazolate Framework (ZIF-8) Supported Nanoparticles: Synthesis and Applications." Thesis, 2018. https://etd.iisc.ac.in/handle/2005/5494.

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Nanoparticles have gained great interest in various fundamental and applied areas of science and technology due to their tunable size dependent properties which is not achievable by their bulk counterparts. Nanoparticles are extremely reactive by virtue of their high surface energy arising from their large surface-to-volume ratio. Generally, bare nanoparticles need to be stabilized using capping agents or surfactants to prevent aggregation and coalescence, which could influence their unique properties. Therefore, the synthesis of non-aggregated nanoparticles without capping agents becomes very

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19

Tsai, Tsun-Ju, and 蔡淳如. "ABE Fermentation and Butanol Separation by Zeolitic Imidazolate Framework-8 (ZIF-8) Adsorption." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/21315097369788568401.

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碩士<br>國立臺灣科技大學<br>化學工程系<br>104<br>Bioalcohols such as ethanol and butanol are alternatives to fossil oil-based fuels. Especially biobutanol has many superior properties than that of bioethanol. Biobutanol is usually produced by acetone-butanol-ethanol (ABE) fermentation of bacterial strain Clostridium. However, its separation from the fermentation broth is still a huge challenge. Adsorption is one of the energy efficient techniques for butanol separation from dilute fermentation broths. In this study, a zeolitic imidazolate fragmentation-8 (ZIF-8) was used as an adsorbent for the separation o

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20

"Stability, Transport and Modification of Zeolitic Imidazolate Framework-8 Membranes for Light Hydrocarbon Separations." Doctoral diss., 2017. http://hdl.handle.net/2286/R.I.46184.

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abstract: Membrane technology is a viable option to debottleneck distillation processes and minimize the energy burden associated with light hydrocarbon mixture separations. Zeolitic imidazolate frameworks (ZIFs) are a new class of microporous metal-organic frameworks with highly tailorable zeolitic pores and unprecedented separation characteristics. ZIF-8 membranes demonstrate superior separation performance for propylene/propane (C3) and hydrogen/hydrocarbon mixtures at room temperature. However, to date, little is known about the static thermal stability and ethylene/ethane (C2) separation

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21

Tan, Xiaoyu. "Preparation of Zeolitic Imidazolate Framework-8 (ZIF-8) Membrane on Porous Polymeric Support via Contra-Diffusion Method." Thesis, 2016. http://hdl.handle.net/10754/609812.

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In the last decade, many attempts were made to put metal organic frameworks (MOFs) in industrial applications, but most of these efforts weren’t successfully. As one of the few MOFs produced on industrial scale, ZIF-8 has interesting pore size, huge internal surface area and great thermal and chemical stability. Therefore, ZIF-8 might become the first MOF, which will be applied in industrial separation processes. In this thesis, a synthesis study is presented, which leads to a cheap and convenient way to fabricate defect-free and thin ZIF-8 membranes on porous polymeric supports showing high

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Lestari, Gabriella. "Hydrothermal Synthesis of Zeolitic Imidazolate Frameworks-8 (ZIF-8) Crystals with Controllable Size and Morphology." Thesis, 2012. http://hdl.handle.net/10754/223451.

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Zeolitic imidazolate frameworks (ZIFs) is a new class of metal-organic frameworks (MOFs) with zeolite-like properties such as permanent porosity, uniform pore size, and exceptional thermal and chemical stability. Until recently, ZIF materials have been mostly synthesized by solvothermal method. In this thesis, further analysis to tune the size and morphology of ZIF-8 is done upon our group’s recent success in preparing ZIF-8 crystals in pure aqueous solutions. Compositional parameters (molar ratio of 2-methylimidazole/Zn2+, type of zinc salt reagents, reagent concentrations, addition of surfac

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Chang, Chia-Hao, and 張家豪. "Zeolitic Imidazolate Framework-8 (ZIF-8) Membranes: Rational Design of Interfacial Synthesis and Enhanced Performance of Gas (CO2/N2) Separation." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/em648q.

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碩士<br>國立臺灣大學<br>化學工程學研究所<br>105<br>Metal-organic framework (MOF) membranes are potentially useful in gas separation applications, but conventional methods for preparing MOF membranes are multi-steps and under high-pressure synthetic conditions. In this thesis, a reliable one-step interfacial synthesis under atmospheric pressure has been developed for preparing zeolitic imidazolate framework-8 (ZIF-8) membranes supported on porous α-Al2O3 disks. To obtain defect-free ZIF-8 membranes, three reaction parameters were investigated: reaction time, reaction temperature, and concentration of 2-methyli

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Wang, Shao-Chun, and 王劭群. "Water-Based Synthesis of Zeolitic Imidazolate Framework-90 (ZIF-90) with a Controllable Particle Size and its Application in Biocatalysis." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/468f6v.

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碩士<br>國立中央大學<br>化學學系<br>102<br>In zeolitic imidazolate frameworks (ZIFs), a subclass of metal–organic frameworks (MOFs), metal ions such as Zn2+ and Co2+ are linked through the nitrogen atoms of the deprotonated imidazolate to form neutral frameworks and provide a tunable crystalline structure and porosity and a high internal surface area. Additionally, the M–Im–M angle is similar to that of the Si–O–Si angle (145o) preferred in zeolites. This fact has led to the synthesis of a large number of ZIFs with zeolite-type tetrahedral topologies. Therefore, ZIFs have recently attracted considerable a

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Wu, Jhe-Wei, and 吳哲瑋. "The studies on functional modification of zeolitic imidazolated framework-90 (ZIF-90) and mesoporous silica (SBA-15) materials." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/00237918745227171411.

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碩士<br>國立中央大學<br>化學學系<br>101<br>Two parts in my thesis. Part I, a straightforward method was developed for the conversion ZIF-90 aldehyde groups into amino and carboxyl groups to change the ZIF surface into cationic and anionic, respectively, under neutral conditions. A detailed characterization of the samples performed using different spectroscopic techniques unanimously demonstrated the ZIFs. Accordingly, the transformations proceeded without loss of integrity of the parent framework. Remarkably, ZIF-90-A showed with great CO2 binding capability, so it is good potential material for CO2 stora

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Wu, Yu-Hsun, and 吳于勳. "A Novel Aqueous Counter Diffusion Seeding Method for the Preparation of Zeolitic Imidazolate Framework-8 (ZIF-8) Membranes on Ceramic Hollow Fiber Supports for Gas Separation." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/6cbq4d.

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碩士<br>國立臺灣大學<br>化學工程學研究所<br>105<br>Zeolitic imidazolate framework ZIF-8 is one of the best known ZIF structures due to its small aperture size (0.34 nm) which is suitable for the most concerned gas separations, such as H2/CH4 and CO2/N2. Tons of researchers have devoted to preparing the ZIF-8 membranes in the past five years, which makes the ZIF-8 membranes step up to commercialization stage. However, the absence of a reliable and practical preparation process results in a difficulty in commercializing the ZIF-8 membranes. In this study, we proposed a novel counter diffusion seeding method com

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Hsieh, Yuan-Che, and 謝沅哲. "Pervaporation of acetic acid/water mixtures through a zeolitic imidazolate frameworks (ZIF-8)/poly(2,6-dimethyl-p-phenylene oxide) mixed matrix composite membranes." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/87491578121049684465.

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碩士<br>中原大學<br>化學工程研究所<br>103<br>In this study, ZIF-8 was added into a hydrophobic polymer, poly(2,6-dimethyl-p-phenylene oxide), and casted on PAN support membranes to form a mixed matrix composite membranes. The MMCMs was applied to separate 90wt% acetic acid aqueous solution. However, the pervaporation performance have limited by coupling effect between acetic acid and water at room temperature. This problem was solved by increasing operation temperature, because the kinetic energy of molecular was increased at high temperature that could decreased the interaction between water and acetic ac

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Deng, Yu-Heng, and 鄧有衡. "A Novel and Efficient Mixed Matrix Membrane (MMM) for Pervaporation of Ethanol/Water Mixtures owing to High and Homogeneous Loading of Zeolitic Imidazolate Frameworks-8 (ZIF-8) Nanoparticles." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/69672769485896599301.

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碩士<br>國立臺灣大學<br>化學工程學研究所<br>103<br>To overcome the problems of phase separation between polymer and fillers and low separation performance of a membrane at high filler loading, we have synthesized a novel and efficient mixed matrix membrane (MMM) by incorporating water-based synthesis of ZIF-8 nanoparticles into polyvinyl alcohol (PVA) membranes. The ZIF-8 nanoparticles without drying is preferred for the fabrication of PVA/ZFI-8 MMMs. The incorporation of ZIF-8 nanoparticles does increase both of the flux and separation factor of a PVA membrane. However, both of the pervaporation performances

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Moura, Beatriz Quaresma Chaves Alves de. "Hybrid Ionic Liquids/Metal Organic Frameworks for CO2/CH4 separations." Master's thesis, 2018. http://hdl.handle.net/10362/49844.

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Taheri, Mahdiar. "Green Synthesis of Zeolitic Imidazolate Frameworks (ZIFs) for Sustainable Development." Phd thesis, 2021. http://hdl.handle.net/1885/231094.

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Metal organic frameworks (MOFs) are a broad family of micro-/mesoporous materials with a significant potential for many applications due to their tunable pore size and very high surface area. However, it remains a significant challenge to produce well-dispersed MOF nanopowders and hierarchically-structured MOF films using scalable and environmentally friendly methods. In order to utilize MOFs for sustainable development, it is of great importance to not only minimize the waste generation and environmental impacts in their syntheses, but also develop suitable applications to mitigate environmen

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Huang, Hong-Cheng, and 黃泓程. "Synthesis and Characterization of Zeolitic Imidazolate Framework Nanofiber Composites." Thesis, 2019. http://ndltd.ncl.edu.tw/handle/p7a2cy.

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碩士<br>明新科技大學<br>化學工程與材料科技系碩士班<br>107<br>In this study, a forward-oriented organometallic frame/polyvinyl alcohol (MOF/PVA) nanofiber material was prepared by electrospinning. Polyvinyl Alcohol (PVA) was uniformly mixed with a metal organic framework (MOF) to form a solution. In this experiment, zinc nitrate Zn(NO3)2) and 2-methylimidazole were used to synthesize ZIF-8 powder material in one step, and then added to 40mg, 120mg and 200mg respectively. The 10wt% PVA polymer solution was thoroughly stirred, the precursor was disposed, and the electrospinning process was performed. The crystal stru

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Mashao, Gloria. "Polyaniline-zeolitic imidazolate framework composite nanofibers for hydrogen gas sensing application." Thesis, 2019. http://hdl.handle.net/10386/3149.

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Thesis(M.Sc.(Chemistry)) -- University of Limpopo, 2019<br>The quest for renewable, sustainable and environmentally compatible energy sources have been on-going for decades. Green technology such as hydrogen fuel cell has attained much attention as an alternative energy carrier to carbon-based fuels owing to its renewability and cleanliness. However, hydrogen gas feed to the fuel cell can easily be ignited if its concentration is above 4 wt.% at room temperature. Thus, hydrogen safety mechanisms such as hydrogen sensors are vital to guarantee people‘s safety in the hydrogen infrastructure. Se

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Ting, Hsiang, and 丁翔. "Membrane Adsorber Comprising Zeolitic Imidazolate Framework for Removal of Die Molecules." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/8u765v.

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碩士<br>國立臺灣大學<br>化學工程學研究所<br>105<br>We investigate a novel membrane adsorber comprising metal-organic frameworks (MOFs) for water treatment. Two types of MOF (ZIF-8 and ZIF-L) were grown within a porous α-alumina support to form a membrane for the adsorption of the die molecule, Rose Bengal, in aqueous phase. The external surface of the ZIF-L was shown to possess a strong affinity for Rose Bengal. We also observed that small crystals (with large external surface area) are beneficial to adsorption. The surfactant CTAB was used in the synthesis of ZIF-L-based membrane adsorber in order to reduce

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Yuan, Shao Hsuan, and 袁紹軒. "Core-Shell Zeolitic Imidazolate Framework Based Mixed Matrix Membrane for Gas Separation." Thesis, 2019. http://ndltd.ncl.edu.tw/handle/7s6h2p.

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碩士<br>國立中央大學<br>化學工程與材料工程學系<br>107<br>Zeolitic imidazolate framework (ZIF) is a promising material in membrane technology for gas separation. In our work, ZIF-8 and ZIF-67 were synthesized in the form of core-shell structure (ZIF-67@ZIF-8) by the seed mediated growth method. ZIF-67@ZIF-8 nanocrystals present higher surface area, gas uptake and thermal stability in comparison with the core (ZIF-67). ZIF fillers were added into 6FDA-DAM with the proper solvent to fabricate mixed matrix membranes (MMMs). In order to realize the mechanism of the core-shell structure, the preparation of membrane pl

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Huang, Bo-Ting, and 黃柏庭. "Studies of Optical Properties of Graphene Quantum Dots / Zeolitic Imidazolate Framework-8 Composites." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/83764644892197447016.

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碩士<br>國立臺南大學<br>材料科學系碩士班<br>105<br>In this study, we used photoluminescence(PL) spectrum to observe the optical characteristic of Graphene Quantum Dots (GQDs) and Graphene Quantum Dots/Zeolite Imidazole Framework-8(GQDs/ZIF-8). We synthesized GQDs through Hummers’ method to enhance the quantum-confinement effect for its opto-electronics can be tuned by band gap. By nitride doping process, the vacancies of GQDs reduced and then rising up the PL quantum yield. In addition, ZIF-8 is composed of zinc and 2-methylimidazole thence it has strong fluorescent properties. Therefore, we used hydrothermal

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Lee, Yuan-Tse, and 李沅澤. "Synthesis, Characterization and H2/CO2 separation of A mixed-metal zeolitic imidazolate framework membrane." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/01947905499567829333.

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碩士<br>國立交通大學<br>材料科學與工程學系所<br>101<br>In this study, we proposed that the impregnation of two metal ions in the node of structure of ZIF, formation of mixed metal ZIF is applied to gas separation for hydrogen and carbon dioxide. In the first part, we prepare the nanoparticles for coating on the substrate to act as the nuclei for the secondary growth. The ZIF structures have been characterized by XRD and FTIR. The surface area was determined by N2 adsorption-desorption isotherms and SEM was used to observe the surface morphology and microstructure. The ZIF-8-67 containing both zinc ions (ZIF-8)

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Hsu, Yi-Chung, and 徐倚中. "Evaluation of Zeolitic Imidazolate Framework-8 Coated Capillary Column for Separation of Transformer Oil Gases." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/52779075968455792873.

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碩士<br>輔仁大學<br>化學系<br>102<br>Zeolitic imidazolate frameworks ( ZIFs ) is a new subclass porous metal organic frameworks (MOFs). ZIF-8, which is constructed in tetrahedral frameworks by zinc ion at center and 2-methylimidazole as linker, was exploiter as stationary phase for capillary gas chromatographic separation of total combustible gases (TCG), including hydrogen (H2), carbon monoxide (CO), methane (CH4), ethane (C2H6), ethylene (C2H4), and acetylene (C2H2), dissolved in power transformer insulating oil. ZIF-8 was uniformly deposited on the inner wall of conventional capillary as porous lay

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ZHENG, ZHI-BIN, and 鄭志彬. "Cobalt Oxide Dodecahedra derived from Cobalt Zeolitic Imidazolate Framework as the Anode Materials for Lithium-Ion Batteries." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/86njg5.

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碩士<br>國立高雄應用科技大學<br>化學工程與材料工程系博碩士班<br>106<br>In this study, the cobalt zeolite imidazole framework (ZIF-67) was synthesized by a normal temperature and pressure method. The higher the concentration of the reactants, the larger was the particle size of ZIF-67, while the smaller particle size of ZIF-67 was obtained when using the lower the concentration of reactants. The ZIF-67 samples with different particle sizes were calcined at 550°C in air atmosphere to obtain the cobalt oxide with rhombic dodecahedron structure. When the calcination temperature exceeded 650°C, the rhombic dodecahedron stru

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