Novel 2D micro-porous Metal-Organic Framework for hydrogen storage

Öztürk, Zeynel; Köse, Dursun Ali; Şahin, Zarife Sibel; Özkan, Göksel; Asan, Abdurrahman

doi:10.1016/j.ijhydene.2016.05.170

Cited by 25 publications

(7 citation statements)

References 54 publications

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“…Cu-NMOF, [Cu 2 (μ-OH)(μ 4 -btc)(phen) 2 ] n •5nH 2 O, was synthesized following a reported protocol after some modification. 29 Cu(NO 3 ) 2 •3H 2 O (2 mmol), trimesic acid (H 3 btc, 1,3,5-benzenetricarboxylic acid; 1 mmol), and 1,10-phenanthroline (phen, 2 mmol) were dissolved in a 50 mL anhydrous methanol and placed into a stainless steel Teflon lined reactor (100 mL), followed by heating for 24 h at 120 °C. Then, the reactor was coolded down to ambient temperature.…”

Section: Methodsmentioning

confidence: 99%

Hybrid Metal–Organic-Framework/Inorganic Nanocatalyst toward Highly Efficient Discoloration of Organic Dyes in Aqueous Medium

Iqbal

Kirillov

et al. 2018

Inorg. Chem.

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Nanoscale metal–organic frameworks (NMOFs) represent a unique class of solids with superior adsorption, mass transport, and catalytic properties. In this study, a facile and novel approach was developed for the generation of hybrid Cu-NMOF/Ce-doped-Mg-Al-LDH nanocatalyst through in situ self-assembly and solvothermal synthesis of a 2D Cu-NMOF, [Cu2(μ-OH)(μ4-btc)(phen)2] n ·5nH2O {H3btc, trimesic acid; phen, 1,10-phenanthroline}, on a cerium-doped Mg-Al layered double hydroxide (Ce-doped-Mg-Al-LDH) matrix. Self-assembly between Cu-NMOF nanocrystals and exfoliated LDH led to their nanoscale mixing and prevented the formation of aggregated Cu-NMOF nanoparticles. In the resulting hybrid nanostructure, Cu-NMOF nanocrystals (∼10–20 nm particle size) are anchored uniformly on a Ce-doped-Mg-Al-LDH’s surface, possessing a dimension of several hundred nanometers. Catalytic activity of Cu-NMOF/Ce-doped-Mg-Al-LDH and Cu-NMOF was evaluated under ambient conditions in the reductive degradation (discoloration) of aqueous solutions of 4-nitrophenol (4-NP, model substrate) and a series of commercial organic dyes by applying sodium borohydride as a reducing agent. The Cu-NMOF/Ce-doped-Mg-Al-LDH nanocatalyst exhibited an outstanding catalytic activity toward degradation of 4-NP, with k app (rate constant) of 0.03 and a catalyst TOF (turnover frequency) up to 7.1 × 103 h–1. Full and very quick discoloration of organic dyes {rhodamine B (RhB), methylene blue (MB), Congo red (CR), methyl orange (MO), and rhodamine 6G (R6G)} was also achieved with TOF values of up to 1.4 × 105/h. A superior activity of the hybrid nanocatalyst over Cu-NMOF can be regarded as a synergic effect among Cu-NMOF and Ce-doped-Mg-Al-LDH components, while the Ce-doped-Mg-Al-LDH carrier acts as a cocatalyst. The hybrid nanocatalyst can easily be recovered and reused successfully for the five consecutive reaction runs with the same catalytic performance. This study also shows that NMOFs can be easily incorporated onto conventional catalyst supports, resulting in hybrid nanocatalysts with a highly uniform structural architecture, controlled chemical composition, and excellent catalytic function.

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Section: Methodsmentioning

confidence: 99%

Hybrid Metal–Organic-Framework/Inorganic Nanocatalyst toward Highly Efficient Discoloration of Organic Dyes in Aqueous Medium

Iqbal

Kirillov

et al. 2018

Inorg. Chem.

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“…[Ni 2 (btc)(en) 2 ] n coordination polymer exhibits relatively good hydrogen adsorption capability of 0.3 wt.% at room temperature and pressure of 2.63 bar (2.6 atm). Its structure compares favorably to typical twodimensional MOFs [48][49][50], because it provides access to the inter-layer space, significantly increasing the available surface area for adsorption. In addition, flexible structure that expands on adsorption and contracts on desorption would reduce the amount of unused hydrogen during charge/discharge cycle.…”

Section: Discussionmentioning

confidence: 99%

“…MOFs typically exhibit hydrogen storage capacities of less than 2 wt.% at room temperature and high pressure (50-100 bar) [46,47]. Twodimensional MOF systems have typically exhibited inferior hydrogen storage properties due to relatively low surface area of 200-1600 m 2 g −1 [48][49][50], where hydrogen is stored in the pores of the twodimensional structure, while the inter-layer space remains inaccessible.…”

Section: Introductionmentioning

confidence: 99%

Hydrogen storage in a layered flexible [Ni2(btc)(en)2]n coordination polymer

Blagojević

Lukic

Begović

et al. 2016

International Journal of Hydrogen Energy

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Ni 2 (btc)(en) 2 ] n coordination polymer exhibits a layered two-dimensional structure with weak interaction between the layers. Correlation of experimental measurements and DFT calculations and molecular simulations demonstrated that its structural features, primarily the inherent flexibility of the layered polymeric structure, lead to improved hydrogen storage performance at room temperature, due to significant enhancement in isosteric heats of hydrogen adsorption. Volumetric measurements of hydrogen adsorption at room temperature show up to 0.3 wt.% hydrogen absorbed at 303K and 2.63 bar of hydrogen pressure, with isosteric heats of adsorption of about 12.5 kJ mol −1 . Predicted performance at room temperature is 1.8 wt.% at 48 bar and 3.5 wt.% at 100 bar, better than both MOF-5 and NU-100, with calculated values of isosteric heats for adsorption of hydrogen are in 8-13 kJ mol −1 range at both 77K and 303K. Grand canonical Monte Carlo calculations show that this material, at 77K, exhibits gravimetric hydrogen densities of more than 10 wt.% (up to 8.3 wt.% excess) with the corresponding volumetric density of at least 66 gL −1 , which is comparable to MOF-5, but achieved with considerably smaller surface area of about 2500 m 2 g −1 . This study shows that layered two-dimensional MOFs could be a step towards MOF systems with significantly higher isosteric heats of adsorption, which could provide better room temperature hydrogen storage capabilities. *

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“…Finally, the Fe-MOFs nanoparticles were filtered and dried at 60 o C in vacuum oven for 6 hrs. [22][23][24][25][26][27].…”

Section: Preparation Of Fe-mofs Nanocatalystmentioning

confidence: 99%

“…The peaks at 1580 and 1660 cm -1 characteristic asymmetric of COOgroup, whiles the peaks at 1385 and 1477 cm -1 characteristic symmetric of COOgroup [17][18][19] . The appeared peak at 1100 -1110 cm -1 is related to the C-O stretching vibration [22,27] . The weak and narrow bands at 1065-1083 and 750 -782 cm -1 indicate to γ(C-H), δ(C-H) vibration of aromatic rings which confirmed presence of BTC ligand-molecule in Fe-MOFs nanoparticles.…”

Section: Ft-ir Spectroscopy Of Fe-mofsmentioning

confidence: 99%

Fe-MOF nanoparticles as efficient adsorbent for removal of heavy metal ions by facile hydrothermally synthesis

Dafrawy

Alshorifi

Ahmed

2021

Preprint

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Fe-MOFs catalyst was prepared by simple solvothermal synthesis. The Fe-MOF was characterized by XRD, TEM, SEM and FT-IR which confirmed metal organic framework nanoparticles with Nano size reached nearly 29.4-129.9 nm. The adsorption capacities / percentages of Fe-MOF adsorbent for heavy metals as toxic pollutants from aqueous solutions were high, which indicate that Fe-MOFs nanoparticles can be used as a good adsorbent.

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Novel 2D micro-porous Metal-Organic Framework for hydrogen storage

Cited by 25 publications

References 54 publications

Hybrid Metal–Organic-Framework/Inorganic Nanocatalyst toward Highly Efficient Discoloration of Organic Dyes in Aqueous Medium

Hybrid Metal–Organic-Framework/Inorganic Nanocatalyst toward Highly Efficient Discoloration of Organic Dyes in Aqueous Medium

Hydrogen storage in a layered flexible [Ni2(btc)(en)2]n coordination polymer

Fe-MOF nanoparticles as efficient adsorbent for removal of heavy metal ions by facile hydrothermally synthesis

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