Comparison study of Ag(I) and Au(III) loaded on magnetic thiourea-formaldehyde as disinfectants for water pathogenic microorganism’s deactivation

El‐Liethy, Mohamed Azab; Elwakeel, Khalid Z.; Ahmed, Mohammed

doi:10.1016/j.jece.2018.06.028

Cited by 33 publications

(10 citation statements)

References 31 publications

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“…Dialdehyde cellulose has been prepared from a cellulose powder by a modified keshk method [ 9 ] under heterogeneous reaction conditions (1:1 ethanol water mixture). [ 56 ] Briefly, the MCC (0.5 g, 0.003 mol) has been suspended in distilled water ethanol mixture (H 2 O:EtOH = 25:25 ml) under stirring for 2 h. (1.4 g, 0.006 mol) of potassium periodate was added slowly. Subsequently, the reaction mixture was heated under reflux to 60°C for 2 h. Afterward, the reaction system has been maintained at room temperature in dark for 48 h. The residual periodate oxidant was decomposed by immersing in an excess of ethylene glycol solution [ 11 ] and stirring the mixture for 30 min.…”

Section: Methodsmentioning

confidence: 99%

“…[ 54 ] In addition to providing the suitable conditions for magnetite NPs synthesis using one iron salt, sonochemistry also serves as an important uniform size distribution agent, high surface area with the notable exception of quick reaction occurrence at low temperatures. [ 55–57 ] The objective of this contribution is the sonochemical synthesis of a new magnetic nanocomposite based on cross‐linked thiourea–formaldehyde functionalized cellulose and loaded with magnetite NPs and to explore the advantageous combination of cellulose, dithiooxamide, formaldehyde, and magnetite NPs on structural, crystalline, thermal, and magnetic properties. The magnetic functionalized cellulose has been employed to boost the reduction of 4‐nitrophenol (4‐NP) with NaBH 4 assistance.…”

Section: Introductionmentioning

confidence: 99%

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New sonochemical magnetite nanoparticles functionalization approach of dithiooxamide–formaldehyde developed cellulose: From easy synthesis to recyclable 4‐nitrophenol reduction

Mehdaoui

Agren

Dhahri

et al. 2021

Applied Organom Chemis

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Magnetic [FA‐c‐(C‐DTX)@Fe3O4] nanocomposites have been prepared with a four‐step technique involving three mechanical stirring conventional steps to obtain [(FA‐c‐(DTX‐g‐DAC)] and an ultrasound‐assisted Fe3O4 coating approach to fabricate [FA‐c‐(C‐DTX)@Fe3O4]. Magnetic nanoparticles (NPs) (Fe3O4 NPs) synthesis and integration has been easily and rapidly approached under novel environmentally friendly optimized reaction conditions: an ethanol–water solution, one iron precursor use, short reaction time, low temperature, and an ultrasonic irradiation process. This new condition's unique combination is attributed to our new synthesis procedure. Sonochemically synthetisized [FA‐c‐(C‐DTX)@Fe3O4] were easily separated from the reaction mixture simply via external magnetic field application, and therefore, neither filtration nor centrifigation was required. The synthetisized samples have been investigated by Fourier transform infrared (FTIR) spectroscopy, nuclear magnetic resonance (NMR) spectroscopy, X‐ray photoelectron spectroscopy (XPS), X‐ray diffraction (XRD), thermogravimetry analysis (TGA), scanning electron microscopy (SEM), and vibrating‐sample magnetometry (VSM). Obtained outcomes including successful magnetite coating process, good crystallinity, homogenous morphology, enhanced thermal stability, and obvious magnetic properties suggested the potential of sonochemical procedure to fabricate and integrate magnetic NPs. This sonochemically synthesized catalyst was evaluated toward the reduction of the organic pollutant 4‐nitrophenol and showed excellent catalytic activity. This ultrasound‐assisted nanocomposites preparation is simply scalable to meet industrial application.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

New sonochemical magnetite nanoparticles functionalization approach of dithiooxamide–formaldehyde developed cellulose: From easy synthesis to recyclable 4‐nitrophenol reduction

Mehdaoui

Agren

Dhahri

et al. 2021

Applied Organom Chemis

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“…, H 2 O 2 and mostly non-selective OH . that efficiently terminates POPs and micro-organisms [ 28 ]. In AOPs, heterogeneous photo catalysts such as TiO 2 have been used to accelerate the production of free radicals by both oxidation and reduction processes [ 4 ].…”

Section: Introductionmentioning

confidence: 99%

Anticorrosion Coated Stainless Steel as Durable Support for C-N-TiO2 Photo Catalyst Layer

et al. 2020

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The development of durable photocatalytic supports resistant in harsh environment has become challenging in advanced oxidation processes (AOPs) focusing on water and wastewater remediation. In this study, stainless steel (SS), SS/Ti (N,O) and SS/Cr-N/Cr (N,O) anticorrosion layers on SS meshes were dip-coated with sol gel synthesised C-N-TiO2 photo catalysts pyrolysed at 350 °C for 105 min, using a heating rate of 50 °C/min under N2 gas. The supported C-N-TiO2 films were characterised by scanning electron microscopy (SEM) coupled with energy dispersive spectroscopy (EDS), X-ray diffraction (XRD) and Raman spectroscopy. The results showed that C-N-TiO2 was successfully deposited on anticorrosion coated SS supports and had different morphologies. The amorphous C and TiO2 were predominant in C-N-TiO2 over anatase and rutile phases on the surface of SS and anticorrosion supports. The C-N-TiO2 coated films showed enhanced photocatalytic activity for the decolouration of O.II dye under both solar and UV radiations. The fabricated C-N-TiO2 films showed significant antibacterial activities in the dark as well as in visible light. Herein, we demonstrate that SS/Ti(N,O) and SS/Cr-N/Cr(N,O) anticorrosion coatings are adequate photocatalytic and corrosion resistant supports. The C-N-TiO2 photo catalytic coatings can be used for water and wastewater decontamination of pollutants and microbes.

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“…Recently, engineered nanoparticles (NPs) attracted considerable attention in water/wastewater treatment systems rather than chlorination. Several nanomaterials, such as Ag, Pt, TiO 2 , and ZnO with their extraordinary features were extensively examined in different environmental challenges . Extensive studies were conducted on employing AgNPs, ZnONPs, and TiO 2 NPs in wastewater treatment .…”

Section: Introductionmentioning

confidence: 99%

“…Several nanomaterials, such as Ag, Pt, TiO 2 , and ZnO with their extraordinary features were extensively examined in different environmental challenges. [6,9,10] Extensive studies were conducted on employing AgNPs, ZnONPs, and TiO 2 NPs in wastewater treatment. [6,11,12] However, several cytotoxic effects of them were reported at low concentration (>60 μg mL À1 ).…”

Section: Introductionmentioning

confidence: 99%

Study on the Antagonistic Potential of Biosynthesized Hematite Nanoparticles During Water and Wastewater Treatment

Eltarahony

Zaki

Kheiralla

et al. 2019

CLEAN Soil Air Water

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Microbial pollution of water is one of the hazardous factors that threaten public health and the surrounding ecosystem. Therefore, the development of environmentally benign nanoparticles with exceptional properties has increased the drive toward improvement of water/wastewater disinfection. Accordingly, we aim to address the antagonistic effect of biogenic hematite nanoparticles (HNPs) against a broad spectrum of microorganisms and in water/wastewater disinfection systems. The minimum inhibitory concentration of HNPs at a range of 0.075–9.6 mg mL−1 is examined. The results demonstrate that Gram‐positive bacteria are more susceptible to HNPs than Gram‐negative ones. In addition, the growth of Candida albicans and Aspergillus brasiliensis is inhibited by applying 1.2 mg mL−1 of HNPs, which indicates antifungal activity. Moreover, HNPs (0.3 mg mL−1) inhibits 58.7, 50.5, and 86.3% of the growth of Staphylococcus aureus, Pseudomonas aeruginosa biofilms, and Chlorella vulgaris, respectively. Transmission electron microscopy (TEM) and scanning electron microscopy (SEM) of untreated and HNPs‐treated cells of Escherichia coli, Staphylococcus aureus, Clostridium perfringens, Candida albicans, and Chlorella vulgaris are studied, and the ultrastructure micrographs show ultrastructure deformities caused by HNPs. Remarkable disinfection strength reaches up to 99.8%, mainly with increasing dose and contact time. The current study highlights the efficiency of HNPs as a biocide, which could contribute to water/wastewater treatment as an alternative for chlorine.

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Comparison study of Ag(I) and Au(III) loaded on magnetic thiourea-formaldehyde as disinfectants for water pathogenic microorganism’s deactivation

Cited by 33 publications

References 31 publications

New sonochemical magnetite nanoparticles functionalization approach of dithiooxamide–formaldehyde developed cellulose: From easy synthesis to recyclable 4‐nitrophenol reduction

New sonochemical magnetite nanoparticles functionalization approach of dithiooxamide–formaldehyde developed cellulose: From easy synthesis to recyclable 4‐nitrophenol reduction

Anticorrosion Coated Stainless Steel as Durable Support for C-N-TiO2 Photo Catalyst Layer

Study on the Antagonistic Potential of Biosynthesized Hematite Nanoparticles During Water and Wastewater Treatment

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