Solid Acid Zirconium Oxo Sulfate/Carbon-Derived UiO-66 for Hydrogen Production

Abdelhamid, Hani Nasser

doi:10.1021/acs.energyfuels.1c00516

Cited by 53 publications

(26 citation statements)

References 65 publications

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“…Among the various MOF biomaterials, the University Institute of Oslo-66 (UiO-66) is porous zirconium (Zr) MOF that has the advantages of low toxicity, porosity, biocompatibility, and excellent chemical and thermal tenability [ 24 – 27 ]. Thus, UiO-66 has been applied in various applications, including energy [ 28 , 29 ] and biomedical fields such as drug delivery [ 24 , 30 ] and photothermal therapy [ 31 ].…”

Section: Introductionmentioning

confidence: 99%

Enhancement of critical-sized bone defect regeneration using UiO-66 nanomaterial in rabbit femurs

et al. 2022

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Background Repair of large-sized bone defects is a challengeable obstacle in orthopedics and evoked the demand for the development of biomaterials that could induce bone repair in such defects. Recently, UiO-66 has emerged as an attractive metal–organic framework (MOF) nanostructure that is incorporated in biomedical applications due to its biocompatibility, porosity, and stability. In addition, its osteogenic properties have earned a great interest as a promising field of research. Thus, the UiO-66 was prepared in this study and assessed for its potential to stimulate and support osteogenesis in vitro and in vivo in a rabbit femoral condyle defect model. The nanomaterial was fabricated and characterized using x-ray diffraction (XRD) and transmission electron microscopy (TEM). Afterward, in vitro cytotoxicity and hemolysis assays were performed to investigate UiO-66 biocompatibility. Furthermore, the material in vitro capability to upregulate osteoblast marker genes was assessed using qPCR. Next, the in vivo new bone formation potential of the UiO-66 nanomaterial was evaluated after induction of bone defects in rabbit femoral condyles. These defects were left empty or filled with UiO-66 nanomaterial and monitored at weeks 4, 8, and 12 after bone defect induction using x-ray, computed tomography (CT), histological examinations, and qPCR analysis of osteocalcin (OC) and osteopontin (OP) expressions. Results The designed UiO-66 nanomaterial showed excellent cytocompatibility and hemocompatibility and stimulated the in vitro osteoblast functions. The in vivo osteogenesis was enhanced in the UiO-66 treated group compared to the control group, whereas evidence of healing of the treated bone defects was observed grossly and histologically. Interestingly, UiO-66 implanted defects displayed a significant osteoid tissue and collagen deposition compared to control defects. Moreover, the UiO-66 nanomaterial demonstrated the potential to upregulate OC and OP in vivo. Conclusions The UiO-66 nanomaterial implantation possesses a stimulatory impact on the healing process of critical-sized bone defects indicating that UiO-66 is a promising biomaterial for application in bone tissue engineering.

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Section: Introductionmentioning

confidence: 99%

Enhancement of critical-sized bone defect regeneration using UiO-66 nanomaterial in rabbit femurs

et al. 2022

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“…[27] Many MOF materials have strong bonds between their moieties, offering high chemical and thermal stability in the temperature range of 250 C to 500 C. [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][32][33][34][35][36][37][38][39][40] catalysis, [41][42][43] photovoltaic devices, [44] sensors, [45][46][47][48] hydrogen production, [18,[49][50][51][52][53] dye sensitizing solar cells (DSSCs), [54] water treatment, [55][56][57] energy, [58,59] and osmotic power generators. [60] Zeolitic imidazolate frameworks (ZIFs) [28,61,62] or metal-azolate frameworks (MAFs) [63] are a subclass of MOFs with similar topological morphology to inorganic porous materials zeolites.…”

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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“…Heavy metals are highly important for several industrial applications and technologies including nanotechnology [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20] . However, the imbalance concentration of heavy metals in water exhibit a negative impact on the environment.…”

Section: Introductionmentioning

confidence: 99%

Selective Naked-eyes Chemosensing of Cu2+ ions using Chitosan-CdS Quantum Dots Biohybrid

Abdelhamid

Algethami

Saidi

et al. 2022

Preprint

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Cadmium sulfide (CdS) quantum dots (QDs) were homogeneously embedded into chitosan (CTS), denoted as CdS/CTS, via an in-situ solvothermal method. The intact structure of the synthesized materials was preserved via separating the materials using freeze-drying. The materials were characterized using X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), transmission electron microscope (TEM), high-resolution TEM (HR-TEM), scanning TEM (STEM), dispersive energy X-ray (EDX) for elemental analysis and mapping, Fourier transform infrared (FT-IR), nitrogen adsorp-tion-desorption isotherms, thermogravimetric analysis, UV-Vis spectroscopy, and diffuse reflectance spectroscopy (DRS). The synthesis procedure offered CdS QDs with 1-7 nm (average particle size of 3.2 nm). The functional groups of CTS modulate the in-situ growth of CdS QDs and prevent the agglomeration of CdS QDs, offering homogenous distribution inside CTS. CdS/CTS QDs can also be used for naked-eye detection of heavy metals with high selectivity toward copper (Cu2+) ions. The mechanism of interactions between Cu2+ ions and CdS/CTS QDs was further studied

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Solid Acid Zirconium Oxo Sulfate/Carbon-Derived UiO-66 for Hydrogen Production

Cited by 53 publications

References 65 publications

Enhancement of critical-sized bone defect regeneration using UiO-66 nanomaterial in rabbit femurs

Enhancement of critical-sized bone defect regeneration using UiO-66 nanomaterial in rabbit femurs

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

Selective Naked-eyes Chemosensing of Cu2+ ions using Chitosan-CdS Quantum Dots Biohybrid

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