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Abu Elella MH, Aamer N, Abdallah HM, López-Maldonado EA, Mohamed YMA, El Nazer HA, Mohamed RR. Novel high-efficient adsorbent based on modified gelatin/montmorillonite nanocomposite for removal of malachite green dye. Sci Rep 2024; 14:1228. [PMID: 38216651 PMCID: PMC10786822 DOI: 10.1038/s41598-024-51321-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2023] [Accepted: 01/03/2024] [Indexed: 01/14/2024] Open
Abstract
Shortage of drinking water has gained potential interest over the last few decades. Discharged industrial effluent, including various toxic pollutants, to water surfaces is one of the most serious environmental issues. The adsorption technique has become a widely studied method for the removal of toxic pollutants, specifically synthetic dyes, from wastewater due to its cost-effectiveness, high selectivity, and ease of operation. In this study, a novel gelatin-crosslinked-poly(acrylamide-co-itaconic acid)/montmorillonite (MMT) nanoclay nanocomposites-based adsorbent has been prepared for removing malachite green (MG) dye from an aqueous solution. Modified gelatin nanocomposites were synthesized using a free-radical polymerization technique in the presence and absence of MMT. Various analytical instrumentation: including FTIR, FESEM, XRD, and TEM techniques were used to elucidate the chemical structure and surface morphology of the prepared samples. Using a batch adsorption experiment, Langmuir isotherm model showed that the prepared modified gelatin nanocomposite had a maximum adsorption capacity of 950.5 mg/g using 350 mg/L of MG dye at pH 9 within 45 min. Furthermore, the regeneration study showed good recyclability for the obtained nanocomposite through four consecutive reusable cycles. Therefore, the fabricated gelatin nanocomposite is an attractive adsorbent for MG dye elimination from aqueous solutions.
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Affiliation(s)
| | - Nema Aamer
- Chemistry Department, Faculty of Science, Cairo University, Giza, 12613, Egypt
| | - Heba M Abdallah
- Polymers and Pigments Department, Chemical Industries Research Institute, National Research Centre, Dokki , Giza, 12622, Egypt
| | - Eduardo A López-Maldonado
- Faculty of Chemical Sciences and Engineering, Autonomous University of Baja California, CP: 22390, Tijuana, Baja California, Mexico
| | - Yasser M A Mohamed
- Photochemistry Department, National Research Center, Dokki, Giza, 12622, Egypt
| | - Hossam A El Nazer
- Photochemistry Department, National Research Center, Dokki, Giza, 12622, Egypt
| | - Riham R Mohamed
- Chemistry Department, Faculty of Science, Cairo University, Giza, 12613, Egypt
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Mohamed YMA, Attia YA. Nano Pt/TiO 2 photocatalyst for ultrafast production of sulfamic acid derivatives using 4-nitroacetanilides as nitrogen precursor in continuous flow reactors. Environ Sci Pollut Res Int 2023; 30:51344-51355. [PMID: 36809621 PMCID: PMC10104933 DOI: 10.1007/s11356-023-25968-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/12/2022] [Accepted: 02/11/2023] [Indexed: 04/16/2023]
Abstract
The design of reactors based on high performance photocatalysts is an important research in catalytic hydrogenation. In this work, modification of titanium dioxide nanoparticles (TiO2 NPs) was achieved by preparation of Pt/TiO2 nanocomposites (NCs) through photo-deposition method. Both nanocatalysts were used for the photocatalytic removal of SOx from the flue gas at room temperature in the presence of hydrogen peroxide, water, and nitroacetanilide derivatives under visible light irradiation. In this approach, chemical deSOx was achieved along with protection of the nanocatalyst from sulfur poising through the interaction of the released SOx from SOx-Pt/TiO2 surface with p-nitroacetanilide derivatives to produce simultaneous aromatic sulfonic acids. Pt/TiO2 NCs have a bandgap of 2.64 eV in visible light range, which is lower than the bandgap of TiO2 NPs, whereas TiO2 NPs have a mean size of 4 nm and a high specific surface area of 226 m2/g. Pt/TiO2 NCs showed high photocatalytic sulfonation of some phenolic compounds using SO2 as a sulfonating agent along with the existence of p-nitroactanilide derivatives. The conversion of p-nitroacetanilide followed the combination processes of adsorption and catalytic oxidation-reduction reactions. Construction of an online continuous flow reactor-high-resolution time-of-flight mass spectrometry system had been investigated, realizing real-time and automatic monitoring of completion the reaction. 4-nitroacetanilide derivatives (1a-1e) was converted to its corresponding sulfamic acid derivatives (2a-2e) in 93-99% isolated yields of within 60 s. It is expected to offer a great opportunity for ultrafast detection of pharmacophores.
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Affiliation(s)
- Yasser M A Mohamed
- Photochemistry Department, National Research Center, Dokki, Giza, 12622, Egypt
| | - Yasser A Attia
- National Institute of Laser Enhanced Sciences, Cairo University, Giza, 12613, Egypt.
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Elnazer AA, Salman SA, Mohamed YMA, Stafford J, Davies P, El Nazer HA. Siwa Oasis groundwater quality: factors controlling spatial and temporal changes. Environ Monit Assess 2022; 195:61. [PMID: 36326936 PMCID: PMC9633493 DOI: 10.1007/s10661-022-10646-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/06/2021] [Accepted: 10/07/2022] [Indexed: 06/16/2023]
Abstract
Siwa Oasis is of great historical, environmental, and scientific importance, as it contains unique archeological and geological features. Groundwater is the main source of freshwater in that oasis. The carbonate aquifer groundwater, used for irrigation, was sampled to evaluate factors controlling quality changes spatially and temporally by applying hydrochemical and statistical analyses. The salinity of the aquifer varied spatially from 1367 to 8645 mg/l based on one hydrogeological condition, with the highest TDS (> 5432.5 mg/l, 25% of samples) at the central part of the study area. Temporally, the salinity changed slightly from 3754.3 mg/l (in 2014) to 4222.4 mg/l (in 2020). The cession of illegal wells, pumping control, and excavation of formed salts have a noticeable impact on salinity (mediate the increase in salinity) and ions. However, about 61% of the studied samples can be considered unsuitable for irrigation owing to salinity and can harm plant yield. The heavy metals studied (Fe, Mn, Cu, Pb), except Cd, were within the permissible limit for irrigation water. Finally, it is proposed to construct desalination stations to enhance water quality for irrigation in the study area and set up many companies for salt extraction.
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Affiliation(s)
- Ahmed A Elnazer
- Geological Sciences Department, National Research Centre, 33 El Bohouth St. (Former El-Tahrir St.), Dokki, Giza, Egypt.
| | - Salman A Salman
- Geological Sciences Department, National Research Centre, 33 El Bohouth St. (Former El-Tahrir St.), Dokki, Giza, Egypt
| | - Yasser M A Mohamed
- Photochemistry Department, National Research Center, Dokki, Giza, 12622, Egypt
| | - Jason Stafford
- School of Engineering, University of Birmingham, Edgbaston, Birmingham, B15 2TT, UK
| | - Philip Davies
- School of Engineering, University of Birmingham, Edgbaston, Birmingham, B15 2TT, UK
| | - Hossam A El Nazer
- Photochemistry Department, National Research Center, Dokki, Giza, 12622, Egypt
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Saeed S, Samer M, Mohamed MSM, Abdelsalam E, Mohamed YMA, Abdel-Hafez SH, Attia YA. Implementation of graphitic carbon nitride nanomaterials and laser irradiation for increasing bioethanol production from potato processing wastes. Environ Sci Pollut Res Int 2022; 29:34887-34897. [PMID: 35040058 DOI: 10.1007/s11356-021-18119-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/24/2021] [Accepted: 12/10/2021] [Indexed: 05/09/2023]
Abstract
Agricultural and agro-industrial wastes (e.g., potato peel waste) are causing severe environmental problems. The processes of pretreatment, saccharification, and fermentation are the major obstacles in bioethanol production from wastes and must be overcome by efficient novel techniques. The effect of exposing the fungi (yeast) Saccharomyces cerevisiae to laser source with the addition of graphitic carbon nitride nanosheets (g-C3N4) with different concentrations on bioethanol production was investigated through the implementation of a batch anaerobic system and using potato peel waste (PPW). Dichromate test was implemented as quantitative analysis for quantification of the bioethanol yield. The benefits of this test were the appearance of green color indicating the identification of ethanol (C2H5OH) by bare eye and the ease to calculate the bioethanol yield through UV-visible spectrophotometry. The control sample (0.0 ppm of g-C3N4) showed only a 4% yield of bioethanol; however, by adding 150 ppm to PPW medium, 22.61% of ethanol was produced. Besides, laser irradiations (blue and red) as influencing parameters were studied with and without the addition of g-C3N4 nanomaterials aiming to increase the bioethanol. It was determined that the laser irradiation can trigger the bioethanol production (in case of red: 13.13% and in case of blue: 16.14% yields, respectively) compared to the control sample (in absence of g-C3N4). However, by adding different concentrations of g-C3N4 nanomaterials from 5 to 150 ppm, the bioethanol yield was increased as follows: in case of red: 56.11% and, in case of blue: 56.77%, respectively. It was found that using fungi and exposing it to the blue laser diode source having a wavelength of 450 nm and a power of 250 mW for a duration of 30 min with the addition of 150 mg L-1 of g-C3N4 nanomaterials delivered the highest bioethanol yield from PPW.
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Affiliation(s)
- Samar Saeed
- National Institute of Laser Enhanced Sciences, Cairo University, Giza, 12613, Egypt
| | - Mohamed Samer
- Department of Agricultural Engineering, Faculty of Agriculture, Cairo University, Giza, 12613, Egypt
| | - Mahmoud S M Mohamed
- Department of Botany and Microbiology, Faculty of Science, Cairo University, Giza, 12613, Egypt
| | - Essam Abdelsalam
- National Institute of Laser Enhanced Sciences, Cairo University, Giza, 12613, Egypt
| | - Yasser M A Mohamed
- Photochemistry Department, National Research Center, Dokki, Giza, 12622, Egypt
| | - Shams H Abdel-Hafez
- Department of Chemistry, College of Science, Taif University, P.O. Box 11099, Taif, 21944, Saudi Arabia
| | - Yasser A Attia
- National Institute of Laser Enhanced Sciences, Cairo University, Giza, 12613, Egypt.
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Elella MHA, Aamer N, Mohamed YMA, El Nazer HA, Mohamed RR. Innovation of high-performance adsorbent based on modified gelatin for wastewater treatment. Polym Bull (Berl) 2022. [DOI: 10.1007/s00289-022-04079-4] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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6
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Abstract
An investigation of the relationship between the morphology of Ag/AgCl nanostructured composites with their catalytic performance has been reported.
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Affiliation(s)
- Yasser A. Attia
- National Institute of Laser Enhanced Sciences, Cairo University, 12613, Egypt
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Taha M, Mohamed YMA, Medany SS, Attia YA. Nano Ag/AgBr/g-C 3N 4 catalyzed the production of hydrogen and reduction of d-glucose to sorbitol under visible light irradiation. NEW J CHEM 2022. [DOI: 10.1039/d2nj03422k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In this study, the polymeric graphitic carbon nitride (g-C3N4) was modified by anchoring Ag/AgBr to improve its charge separation efficiency.
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Affiliation(s)
- Mohamed Taha
- National Institute of Laser Enhanced Sciences, Cairo University, Giza 12613, Egypt
| | | | - Shymaa S. Medany
- Chemistry Department, Faculty of Science, Cairo University, Giza 12613, Egypt
| | - Yasser A. Attia
- National Institute of Laser Enhanced Sciences, Cairo University, Giza 12613, Egypt
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Abdelsalam EM, Mohamed YMA, Abdelkhalik S, El Nazer HA, Attia YA. Photocatalytic oxidation of nitrogen oxides (NO x) using Ag- and Pt-doped TiO 2 nanoparticles under visible light irradiation. Environ Sci Pollut Res Int 2020; 27:35828-35836. [PMID: 32601878 DOI: 10.1007/s11356-020-09649-5] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/19/2020] [Accepted: 06/08/2020] [Indexed: 06/11/2023]
Abstract
In this work, titanium dioxide nanoparticles (TiO2 NPs) and modified TiO2 NPs with silver (Ag) or platinum (Pt) dopant were developed through photodeposition method for the NOx conversion into nitric acid (HNO3) under visible light irradiation. The formed photocatalysts TiO2, Ag/TiO2, and Pt/TiO2 nanocomposites were characterized by utilizing TEM, SEM, energy-dispersive X-ray analysis (EDX), XRD, UV/visible diffuse reflectance spectroscopy (UV-Vis DRS), and FT-IR. It had been investigated that an enhancement within the conversion of NOx into HNO3 was increased from 34.3 to 78.3% for Ag/TiO2 and from 35.2 to 78.5% for Pt/TiO2 under visible light irradiation conditions at room temperature for less than 2 h. The photodegradation rate order of NOx under visible light irradiation is Pt/TiO2 ~ Ag/TiO2 > TiO2. A possible mechanism for the catalytic conversion of NOx gases has been proposed, which depends on the photogeneration of electrons and holes after the excitation of nanocatalysts under visible radiation that promoted superoxide and hydroxyl ions, which can depredate NOx gases. This approach of NOx photocatalytic conversion is characterized by its chemical stability, low cost, high efficiency, simple operation, and strong durability than traditional methods.
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Affiliation(s)
- Essam M Abdelsalam
- National Institute of Laser Enhanced Sciences, Cairo University, Giza, 12613, Egypt
| | - Yasser M A Mohamed
- Photochemistry Department, National Research Center, Dokki, Giza, 12622, Egypt
| | - Saber Abdelkhalik
- Air Quality Lab, Cairo University Center for Hazard Mitigation, Giza, 12613, Egypt
| | - Hossam A El Nazer
- Photochemistry Department, National Research Center, Dokki, Giza, 12622, Egypt
| | - Yasser Attia Attia
- National Institute of Laser Enhanced Sciences, Cairo University, Giza, 12613, Egypt.
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Mohamed YMA, Solum EJ, Eweas AF. Synthesis, antibacterial evaluation, and docking studies of azaisoflavone analogues generated by palladium-catalyzed cross coupling. Monatsh Chem 2018. [DOI: 10.1007/s00706-018-2252-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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10
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Abdelazeem AH, Mohamed YMA, Gouda AM, Omar HA, Al Robaian MM. Corrigendum to: Novel Thymohydroquinone Derivatives as Potential Anticancer Agents: Design, Synthesis, and Biological Screening. Aust J Chem 2017. [DOI: 10.1071/ch16102_co] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
The safety and efficacy of naturally occurring anticancer agents and their derivatives such as thymoquinone (TQ) and thymohydroquinone (THQ) have gained a rapidly growing interest. In an attempt to develop novel anticancer agents with superior activity, TQ was allowed to react with hydrazine hydrate, producing hydrazino thymohydroquinone 3. This new intermediate was subsequently reacted with various isocyanates, isothiocyanates, and acyl halides, affording three series of semicarbazone, semithiocarbazone, and acyl hydrazone derivatives, respectively. Subsequently, the anticancer activity of all the newly synthesised compounds against a panel of cancer cell lines was evaluated. Initial screening of the ability of the test compounds to inhibit cancer cell viability using the 3-(4,5-dimethylthiazolyl-2)-2,5-diphenyltetrazolium bromide (MTT) assay revealed that compounds 5d and 6 exerted better activity against breast cancer than TQ, with half-maximal inhibitory concentration (IC50) values of 9.6 and 10.0?M, respectively. MTT results were confirmed by the ability of these compounds to elicit apoptotic cell death through the activation of caspase 3/7 enzymes. Together, the present work provided a novel class of THQ-based derivatives with potent anticancer and apoptosis properties, thereby warranting further optimisation of these derivatives as novel members in cancer treatment protocols.
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Attia YA, Farag YE, Mohamed YMA, Hussien AT, Youssef T. Photo-extracellular synthesis of gold nanoparticles using Baker's yeast and their anticancer evaluation against Ehrlich ascites carcinoma cells. NEW J CHEM 2016. [DOI: 10.1039/c6nj01920j] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Novel gold nanoparticles capped by yeast extract, showing highly effective cytotoxicity towards cancer cells under visible light.
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Affiliation(s)
- Yasser A. Attia
- Egypt Nanotechnology Center
- Cairo University
- Giza 12566
- Egypt
- National Institute of Laser Enhanced Sciences
| | - Yassmeen E. Farag
- National Institute of Laser Enhanced Sciences
- Cairo University
- Giza 12631
- Egypt
| | | | - Akaber T. Hussien
- Chemistry Department
- Faculty of Science
- Zagazig University
- Zagazig 44519
- Egypt
| | - Tareq Youssef
- National Institute of Laser Enhanced Sciences
- Cairo University
- Giza 12631
- Egypt
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Abdelazeem AH, Mohamed YMA, Gouda AM, Omar HA, Al Robaian MM. Novel Thymohydroquinone Derivatives as Potential Anticancer Agents: Design, Synthesis, and Biological Screening. Aust J Chem 2016. [DOI: 10.1071/ch16102] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
The safety and efficacy of naturally occurring anticancer agents and their derivatives such as thymoquinone (TQ) and thymohydroquinone (THQ) have gained a rapidly growing interest. In an attempt to develop novel anticancer agents with superior activity, TQ was allowed to react with hydrazine hydrate, producing hydrazino thymohydroquinone 3. This new intermediate was subsequently reacted with various isocyanates, isothiocyanates, and acyl halides, affording three series of semicarbazone, semithiocarbazone, and acyl hydrazone derivatives, respectively. Subsequently, the anticancer activity of all the newly synthesised compounds against a panel of cancer cell lines was evaluated. Initial screening of the ability of the test compounds to inhibit cancer cell viability using the 3-(4,5-dimethylthiazolyl-2)-2,5-diphenyltetrazolium bromide (MTT) assay revealed that compounds 5d and 6 exerted better activity against breast cancer than TQ, with half-maximal inhibitory concentration (IC50) values of 9.6 and 10.0 μM, respectively. MTT results were confirmed by the ability of these compounds to elicit apoptotic cell death through the activation of caspase 3/7 enzymes. Together, the present work provided a novel class of THQ-based derivatives with potent anticancer and apoptosis properties, thereby warranting further optimisation of these derivatives as novel members in cancer treatment protocols.
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