Nanospherical inorganic α-Fe core-organic shell necklaces for the removal of arsenic(V) and chromium(VI) from aqueous solution

Azzam, Ahmed M.; Shenashen, Mohamed A.; Selim, Mahmoud M.; Yamaguchi, Hitoshi; El-Sewify, Islam M.; Kawada, Satoshi; Alhamid, A.A.; El‐Safty, Sherif A.

doi:10.1016/j.jpcs.2017.05.017

Cited by 61 publications

(16 citation statements)

References 68 publications

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“…Table 4 compares the global sorption properties of different sorbents for As(V) (i.e., optimum pH, equilibrium time, and the Langmuir parameters for sorption isotherms). Some sorbents, such as functionalized resins (Chen et al, 2018;Lee et al, 2017;Zhang et al, 2018) or nanostructured materials (Azzam et al, 2017;Hokkanen et al, 2015) exhibit remarkable sorption properties (q m,L : 2.46-5.75 mmol As g −1 ). Fig.…”

Section: Sorption Isothermsmentioning

confidence: 99%

As(V) sorption from aqueous solutions using quaternized algal/polyethyleneimine composite beads

Hamza

Salih

et al. 2020

Science of The Total Environment

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Section: Sorption Isothermsmentioning

confidence: 99%

As(V) sorption from aqueous solutions using quaternized algal/polyethyleneimine composite beads

Hamza

Salih

et al. 2020

Science of The Total Environment

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“…In the merits of this complicated core–shell structure, the NiO sphere offered superior control of the diffusion of AsO 4 3− /AsO 4 3− species and selective trapping and oxidation of As(III)‐to‐As(V) species in water. Considering the advantages of large surface area and porous structure of MOFs, which is in accordance with the excellent adsorption activity, Azzam et al fabricated a mesoporous nanospherical necklaces (NSN), in which iron precursor was chelated with ethylenediaminetetraacetic acid (EDTA). The NSN showed a pretty high percentage of trapped As(V) and Cr(VI) species (as shown in Figure a) despite the low dose of solid NSN.…”

Section: Water Treatmentsmentioning

confidence: 99%

“…A linear‐fit line is inserted in the linear concentration range before the saturation of the calibration plots for the colorimetric and fluorescence spectra of RFCs. a) Reproduced with permission . Copyright 2017, Elsevier.…”

Section: Water Treatmentsmentioning

confidence: 99%

Applications of Metal–Organic‐Framework‐Derived Carbon Materials

et al. 2018

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production, especially for hydroelectricity, sunlight, and wind energy, which cannot be gathered or released when they are needed. [5][6][7][8] Electrochemical energy storage devices provide a promising approach for the storage of electric energy from these sources. [9][10][11] Currently, carbonaceous materials have attracted much interest for their extensive applications including adsorption, [12] catalysis, [13] batteries, [14] fuel cells, [15,16] supercapacitors, [17,18] and drug delivery and imaging. [19] In addition, some sensors are also one of the important applications of carbonaceous materials, because they are closely related to human health. [20,21] For instance, Emran and co-workers [22] constructed ultrasensitive biosensors with N-doped mesoporous carbon (NMC)-based electrodes for in vitro monitoring of DA released from living cells. With the further study of the experiment, they also designed a series of S-doped carbon materials for a wider detection of DA, UA (uric acid), and AA (ascorbic acid). [23,24] The advantages of easy preparing, nontoxic and excellent electrical conductivity of carbonaceous materials, which are rare among energy storage materials, make carbonaceous materials superior to most of the energy storage materials. [25][26][27] There are varieties of approaches for the preparation of carbon materials, such as directly carbonizing from organic precursors, physically or chemically carbonizing from carbon, template methods using zeolites and mesoporous silica, solvothermal and hydrothermal methods with elevated temperature, the electrical arc methods, and chemical vapor decomposition (CVD) methods. [28][29][30][31][32][33][34] Among all these approaches, directly carbonizing from organic precursors is the most frequently used method to prepare nanoporous carbons (NPCs) due to its flexibility and simplicity. [35][36][37] However, these NPC materials present certain drawbacks, such as low surface areas, disordered structures, and ununiformed sizes, which will greatly limit their applications. [25] As studies have progressed, researchers found that carbon materials derived from metalorganic frameworks (MOFs) could overcome these limitations.Metal-organic frameworks, which are also named porous coordination polymers (PCPs), are crystalline porous materials with periodic network structures formed by metal ions (or metal clusters) and organic ligands. [38][39][40][41][42] They are usually prepared by solvothermal methods and used as precursors or templates to form nanostructured materials. [43][44][45] So far, many researchers have highlighted the advantages of MOFs. For Carbon materials derived from metal-organic frameworks (MOFs) have attracted much attention in the field of scientific research in recent years because of their advantages of excellent electron conductivity, high porosity, and diverse applications. Tremendous efforts are devoted to improving their chemical and physical properties, including optimizing the morphology and structure of the carbon materials, compositing them wi...

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“…Recent advances in the field of nanotechnology and its applications offer overrun chances to create the next‐generation of unconventional water supply sources. Nanotechnology exhibits efficient performance for economical wastewater purification and removal of pollutants to obtain new water sources .…”

Section: Introductionmentioning

confidence: 99%

Antibacterial Activity of Magnesium Oxide Nano‐hexagonal Sheets for Wastewater Remediation

Azzam

Shenashen

Mostafa

et al. 2018

Env Prog and Sustain Energy

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Water pollution has been rapidly intensified because of the growing population, industrial development, and improper management of water sources. In this work, we fabricated hexagonal micro/macroporous MgO nanosheets (HMM‐NSs) with an average particle size of 350 nm. HMM‐NSs served as an effective antibacterial agent with high surface reactivity due to their well‐scattered pore windows, which conferred the sheets with a large surface. Controlled HMM‐NSs create additional active sites throughout the interior/exterior sheet surface, thereby promoting the release of reactive O species (ROS). The antimicrobial activity of the designed nanosheets was tested against Gram‐positive (Staphylococcus aureus) and ‐negative (Escherichia coli and Pseudomonas aeruginosa) bacteria. HMM‐NSs exhibited potential for bioapplication in inactivating bacterial cells by killing them through the interaction with bacterial cell membrane and internal cellular components. The reactions with cell wall proteins led to reduced permeability, while high release rates of ROS from HMM‐NSs caused damage to DNA and cellular components and eventually led to cell death. Therefore, these finding may provide an unconventional strategy for wastewater disinfection that can be used for irrigation. © 2018 American Institute of Chemical Engineers Environ Prog, 38: S260–S266, 2019

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Nanospherical inorganic α-Fe core-organic shell necklaces for the removal of arsenic(V) and chromium(VI) from aqueous solution

Cited by 61 publications

References 68 publications

As(V) sorption from aqueous solutions using quaternized algal/polyethyleneimine composite beads

As(V) sorption from aqueous solutions using quaternized algal/polyethyleneimine composite beads

Applications of Metal–Organic‐Framework‐Derived Carbon Materials

Antibacterial Activity of Magnesium Oxide Nano‐hexagonal Sheets for Wastewater Remediation

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