Zeolitic imidazolate frameworks (ZIF‐8, ZIF‐67, and ZIF‐L) for hydrogen production

Abdelhamid, Hani Nasser

doi:10.1002/aoc.6319

Cited by 59 publications

(27 citation statements)

References 57 publications

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“…To date, thanks to the development of innovative technologies, molecular hydrogen can be obtained from a widely diversified range of renewable energy sources, thus being able to support the development of resilient energy systems [1,2]. Some recent advances in molecular hydrogen production indicate that a possible route is to perform cycloalkanes [3] and alcohol dehydrogenation [4] as green and sustainable method, but also to realize hydrolytic dehydrogenation of ammonia borane on reduced CoFe 2 O 4 for the H 2 evolution [5] or the hydrolysis of NaBH 4 on ZIF-8 materials [6].…”

Section: Introductionmentioning

confidence: 99%

LaFeO3 Modified with Ni for Hydrogen Evolution via Photocatalytic Glucose Reforming in Liquid Phase

et al. 2021

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In this work, the optimization of Ni amount on LaFeO3 photocatalyst was studied in the photocatalytic molecular hydrogen production from glucose aqueous solution under UV light irradiation. LaFeO3 was synthesized via solution combustion synthesis and different amount of Ni were dispersed on LaFeO3 surface through deposition method in aqueous solution and using NaBH4 as reducing agent. The prepared samples were characterized with different techniques: Raman spectroscopy, UltraViolet-Visible Diffuse Reflectance Spettroscopy (UV–Vis-DRS), X-ray Diffraction (XRD), X-ray Photoelectron Spectroscopy (XPS), X-ray Fluorescence (XRF), Transmission Electron microscopy (TEM), and Scanning Electron microscopy (SEM) analyses. For all the investigated photocatalysts, the presence of Ni on perovskite surface resulted in a better activity compared to pure LaFeO3. In particular, it is possible to identify an optimal amount of Ni for which it is possible to obtain the best hydrogen production. Specifically, the results showed that the optimal Ni amount was equal to nominal 0.12 wt% (0.12Ni/LaFeO3), for which the photocatalytic H2 production was equal to 2574 μmol/L after 4 h of UV irradiation. The influence of different of photocatalyst dosage and initial glucose concentration was also evaluated. The results of the optimization of operating parameters indicated that the highest molecular hydrogen production was achieved on 0.12Ni/LaFeO3 sample with 1.5 g/L of catalyst dosage and 1000 ppm initial glucose concentration. To determine the reactive species that play the most significant role in the photocatalytic hydrogen production, photocatalytic tests in the presence of different radical scavengers were performed. The results showed that •OH radical plays a significant role in the photocatalytic conversion of glucose in H2. Moreover, photocatalytic tests carried out with D2O instead of H2O evidenced the role of water molecules in the photocatalytic production of molecular hydrogen in glucose aqueous solution.

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Section: Introductionmentioning

confidence: 99%

LaFeO3 Modified with Ni for Hydrogen Evolution via Photocatalytic Glucose Reforming in Liquid Phase

et al. 2021

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“…[ 28 ] The high chemical stability of MOFs, especially against water molecules, is usually required for applications such as gas adsorption of CO 2 from the atmosphere or hot‐flue gases. [ 29 ] MOFs were applied for several applications, including CO 2 adsorption, [ 30 ] chemical conversion/fixation of CO 2 , [ 31–40 ] catalysis, [ 41–43 ] photovoltaic devices, [ 44 ] sensors, [ 45–48 ] hydrogen production, [ 18,49–53 ] dye sensitizing solar cells (DSSCs), [ 54 ] water treatment, [ 55–57 ] energy, [ 58,59 ] and osmotic power generators. [ 60 ]…”

Section: Introductionmentioning

confidence: 99%

Removal of carbon dioxide using zeolitic imidazolate frameworks: Adsorption and conversion via catalysis

Abdelhamid

2022

Applied Organom Chemis

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Carbon dioxide (CO2) is one of the culprit causes of global climatic changes. Furthermore, the efficient separation of CO2 from other gaseous mixtures using zeolitic imidazolate framework (ZIF)‐based materials is vital for several processes such as flue gas separation, gas sweetening, and natural gas processing. ZIF‐based materials are emerging adsorbents and catalysts for CO2 gas removal via adsorption and conversion into valuable chemicals. ZIF‐based adsorbents with high‐adsorption/conversion efficiencies and tunable properties can be achieved by judicious synthesis and fabrication methods. We reviewed ZIF‐based materials for CO2 removal via adsorption and catalysis (e.g., cycloaddition, carboxylation, hydrogenation, N‐formylation, electrocatalysis, and photocatalysis). In addition, recent development methods such as membrane technologies and ways to improve the gas separation performance of ZIF membranes were highlighted. The prospective point of view to promote industrial applications and commercialization of ZIF‐based materials was briefly discussed. Once challenges such as low performance and reproducibility for ZIF‐based materials are solved, scalability and cost‐effectiveness should not become issues.

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“…Porous materials [1,2] such as Metal-organic frameworks (MOFs) [3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20] and zeolitic imidazolate frameworks (ZIFs) are hybrid porous materials consisting of metal ions connected with organic linkers [21][22][23][24][25][26][27][28][29][30][31][32][33][34][35][36][37][38]. Processing MOFs using template materials gives rise to a new class of mixed materials that combines the advantages of both components [21][22][23][24][25][26].…”

Section: Introductionmentioning

confidence: 99%

CelloZIFPaper: Cellulose-ZIF Hybrid Paper for Heavy Metal Removal and Electrochemical Sensing

Abdelhamid

Georgouvelas

Edlund

et al. 2022

Preprint

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The processing of hierarchical porous zeolitic imidazolate frameworks (ZIF-8) into a cellulose paper using sheet former Rapid-Köthen (R.K.) is reported. The procedure is a promising route to overcome a significant bottleneck towards applying metal-organic frameworks (MOFs) in commercial products. ZIF-8 crystals were integrated into cellulose pulp (CP) or TEMPO (2,2,6,6-tetramethylpiperidine-1-oxyl radical)-oxidized cellulose nanofibrils (TOCNF) following an in-situ or ex-situ process; the materials were denoted as CelloZIFPaper_In Situ and CelloZIFPaper_Ex Situ. The materials were applied as adsorbents to remove heavy metals from water, with adsorption capacities of 66.2 - 354.0 mg/g. CelloZIFPaper can also be used as a stand-alone working electrode for the selective sensing of toxic heavy metals, for instance, lead ions (Pb2+), using electrochemical-based methods with a detection limit of 8 µM. The electrochemical measurements may advance 'Lab-on-CelloZIFPaper' technologies for label-free detection of Pb2+ ions.

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Zeolitic imidazolate frameworks (ZIF‐8, ZIF‐67, and ZIF‐L) for hydrogen production

Cited by 59 publications

References 57 publications

LaFeO3 Modified with Ni for Hydrogen Evolution via Photocatalytic Glucose Reforming in Liquid Phase

LaFeO3 Modified with Ni for Hydrogen Evolution via Photocatalytic Glucose Reforming in Liquid Phase

Removal of carbon dioxide using zeolitic imidazolate frameworks: Adsorption and conversion via catalysis

CelloZIFPaper: Cellulose-ZIF Hybrid Paper for Heavy Metal Removal and Electrochemical Sensing

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