Shape Control of Zn(II) Metal–Organic Frameworks by Modulation Synthesis and Their Morphology-Dependent Catalytic Performance

Masoomi, Mohammad Yaser; Beheshti, Saeideh; Morsali, Ali

doi:10.1021/acs.cgd.5b00304

Cited by 83 publications

(42 citation statements)

References 35 publications

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“…Recent studies have shown that these gas adsorption capabilities can be further enhanced through the introduction of modulators during MOF synthesis, by altering the overall crystal growth process [14]. In anisotropic MOFs, such as those in the M2(dicarboxylate)2(N-ligand) series, the modulator-based growth control is dramatic and can significantly alter crystal aspect ratios [15][16][17]. The introduction of modulators during synthesis can target either the carboxylate (h00, 0k0) or the amino (00l) planes, inhibiting crystal growth along these planes and directing MOF crystal growth along unmodulated axes ( Figure 1) [15][16][17].…”

Section: Introductionmentioning

confidence: 99%

“…In anisotropic MOFs, such as those in the M2(dicarboxylate)2(N-ligand) series, the modulator-based growth control is dramatic and can significantly alter crystal aspect ratios [15][16][17]. The introduction of modulators during synthesis can target either the carboxylate (h00, 0k0) or the amino (00l) planes, inhibiting crystal growth along these planes and directing MOF crystal growth along unmodulated axes ( Figure 1) [15][16][17]. Previous work has demonstrated the [Cu2(NDC)2(DABCO)]n (NDC = 1,4-naphthalene dicarboxylate; DABCO = 1,4-diazabicyclo[2.2.2]octane) member of the [M2(dicarboxylate)2(N-ligand)]n MOF series can be modulated to obtain rod or plate morphologies with the use of acetic acid (carboxylate) or pyridine (amino) modulators [18].…”

Section: Introductionmentioning

confidence: 99%

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Modulating and Orienting an Anisotropic Zn-Based Metal Organic Framework for Selective CH4/CO2 Gas Separation

Huelsenbeck

Westendorff

et al. 2018

Crystals

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This work investigates the morphological control of the anisotropic [Zn 2 (NDC) 2 (DABCO)] n MOF (Metal organic framework) and the subsequent adsorption characteristics for CO 2 /CH 4 gas separation. Morphology of the MOF crystals is controlled by the use of modulators. The addition of acetic acid or pyridine successfully produce rod or plate morphologies, respectively, with each morphology possessing a different major surface pore aperture. Single-component equilibrium and kinetic adsorption data for CO 2 and CH 4 were collected. Equilibrium analysis indicates a slight selectivity towards CO 2 whereas kinetic data unexpectedly shows lower diffusion time constants for CO 2 compared to CH 4 . Mass transfer resistances on each species is discussed. Finally, a coating technique termed solution shearing is used to orient different morphologies on substrates as a film. An increase in film orientation is observed for the rod morphology, indicating that this MOF morphology is a promising candidate to create large area, thin-film applications.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Modulating and Orienting an Anisotropic Zn-Based Metal Organic Framework for Selective CH4/CO2 Gas Separation

Huelsenbeck

Westendorff

et al. 2018

Crystals

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“…Thermal methods are simple and effective techniques which include thermal decomposition and calcination [37][38][39][40][41][42][43]. Thermal decomposition, or thermolysis, is a chemical decomposition caused by heat [44][45][46][47][48][49][50][51].…”

Section: Thermal Methodsmentioning

confidence: 99%

Various Methods for Synthesis of Bulk and Nano Thallium(III) Oxide

Moeinian

Akhbari

2015

J Inorg Organomet Polym

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Thallium(III) oxide, a degenerate n-type semiconductor, is a highly insoluble thermally stable thallium source suitable for glass, optic and ceramic applications. Although thallium oxide is an important metal oxide, its synthesis has only been sporadically studied. This review gives an overview of all reported synthetic routes for the preparation of both bulk and nanostructured thallium(III) oxide. These methods include electrochemical methods, thermal method, chemical vapor deposition (CVD), microwave irradiation, sol-gel method and one recently chemical route using potassium superoxide. In electrochemical methods, both bulk and nanostructures of thallium(III) oxide can be prepared and the amount of the deposited material, thickness of the layer or wires length depends on the deposition time matrix structure. Thermal methods are simple and effective techniques which include thermal decomposition and calcination of various precursors. By CVD and microwave irradiation we be able to synthesis bulk and nanostructures of thallium(III) oxide, respectively. A one-step, room temperature, solution synthesis of thallium(III) oxide nanoparticles with a size of about 10 nm is reported by using potassium superoxide.

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“…125 Da mesma forma, é também importante conhecer métodos de controle sobre a morfologia de nano-e microcristais de MOFs. 126 A Figura 7 mostra uma imagem de microscopia eletrônica de transmissão de alta resolução de um nanocristal monodisperso do material Zn-MOF-74, 127 onde os clusters metálicos e os canais hexagonais de diâmetro ~11 Å podem ser observados. De acordo com os autores, essa foi a primeira vez que dados de microscopia eletrônica permitiram a observação de um cluster metálico ligando a fase orgânica em uma MOF.…”

Section: Controlando O Tamanho E a Forma Das Partículasunclassified

MOFs (METAL-ORGANIC FRAMEWORKS): UMA FASCINANTE CLASSE DE MATERIAIS INORGÂNICOS POROSOS

Frem¹,

Arroyos²,

Flor³

et al. 2018

Quim. Nova

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MOFs (METAL-ORGANIC FRAMEWORKS): A FASCINATING CLASS OF POROUS INORGANIC MATERIALS. Metal-Organic Frameworks (MOFs) are, according to IUPAC, coordination polymers with an open framework containing potential voids, which can be accessible after activation processes. These materials have aroused interest in the academic environment-and more recently in industry-because their properties such as high crystallinity, permanent microporosity, high surface areas, and the possibility of functionalization. This has enabled applications in different areas, such as gas adsorption, catalysis, drug delivery, photonics and others. Depending on the judicious choice of the metals and the organic linkers, MOFs with different topologies and functions can be created. Synthetic routes for the preparation of these materials will be discussed, highlighting those in consonance with the Green Inorganic Chemistry. Strategies for controlling the size and morphology of the crystals will also be presented, as well the most recent methodologies for the large-scale production. This review will also discuss the use of MOFs in the context of energy and environment, particularly referring to the adsorption and/or transformation of CO 2 , storage of H 2 and CH 4 as well potable water capture.

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Shape Control of Zn(II) Metal–Organic Frameworks by Modulation Synthesis and Their Morphology-Dependent Catalytic Performance

Cited by 83 publications

References 35 publications

Modulating and Orienting an Anisotropic Zn-Based Metal Organic Framework for Selective CH4/CO2 Gas Separation

Modulating and Orienting an Anisotropic Zn-Based Metal Organic Framework for Selective CH4/CO2 Gas Separation

Various Methods for Synthesis of Bulk and Nano Thallium(III) Oxide

MOFs (METAL-ORGANIC FRAMEWORKS): UMA FASCINANTE CLASSE DE MATERIAIS INORGÂNICOS POROSOS

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