Papers by Abdelrahmane Bouafia
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Biomass Conversion and Biorefinery
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Biomass Conversion and Biorefinery, Feb 16, 2023
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Frontiers in Chemistry
Introduction: In this paper, MgO@AgO/Ag2O nanoparticles were greenly synthesized, the current ide... more Introduction: In this paper, MgO@AgO/Ag2O nanoparticles were greenly synthesized, the current idea is to replace the harmful chemical technique with an ecofriendly synthesis of metal oxide nanoparticles (NPs) utilizing biogenic sources.Methods: The current investigation was conducted to create silver oxide NPs decorated by MgO NPs (namely, MgO@AgO/Ag2O nanocom-posite) using the leaves extract of Purslane (Portulaca Oleracea) as the reducing and capping agent. The nanopowder was investigated by means of X-ray diffraction, scanning electron mi-croscope, BET surface area, Fourier transform infrared, and UV-vis spectrophotom-eter studies. XRD studies reveal the monophasic nature of these highly crystalline silver nano-particles. SEM studies the shape and morphology of the synthesis AgO/Ag2O and MgO@AgO/Ag2O NPs. The presence of magnesium and oxygen was further confirmed by EDS profile.Results and discussion: The surface area was found to be 9.1787 m2/g and 7.7166 m2/g, respectively. FTI...
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Biomass Conversion and Biorefinery
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Asian Journal of Research in Chemistry
The importance of Chemometrics Methods in Modeling (in QSAR analysis) of the mathematical model’s... more The importance of Chemometrics Methods in Modeling (in QSAR analysis) of the mathematical model’s study of large datasets of molecules with huge numbers of physicochemical and structural parameters quantitative structure-Toxicity relationship (QSTR) are mainly based on multiple regression analysis in QSAR analysis The study of Least Square in deriving QSTR models for datasets of Quantitative Structure-Toxicity relationship on Log kow (Octanol-water partition coefficient) for 16 Hydrocarbons compounds has been using the software Hyperchem 6.3 for computing descriptors and MINITAB 16 for data modeling. A three -descriptors model [two electronics molecules’ descriptors (QSER descriptor), HOMO (is Highest occupied molecular orbital) and LUMO (Lowest unoccupied molecular orbital), one QSAR descriptor E_H (Hydration Energy) by Least Squares with correlation coefficient r=0.868, S=0.635, R2 = 75.4%, R2ajd=73.7% and Durbin-Watson statistic =1.85277 and graphical analysis by diagram of goodn...
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Biomass Conversion and Biorefinery
Biosynthesis of antioxidant nanoparticles using plant extracts is a simple, rapid, environmentall... more Biosynthesis of antioxidant nanoparticles using plant extracts is a simple, rapid, environmentally friendly, and cost-effective approach. In this study, in vitro antioxidant copper mixed oxide nanoparticles (CuO/Cu2O) were prepared from the alcoholic extract of Phoenix Dactylifera L. and different aqueous concentrations of CuSO4·5H2O. The composition, crystallinity, morphology, and particle size of CuO/Cu2O NPs were tuned by increasing the CuSO4·5H2O concentration from 4 to 10 mM. Ultraviolet–visible (UV–Vis) and Fourier-transform infrared (FTIR) spectroscopy confirmed the reduction of CuSO4·5H2O and the formation of the CuO/Cu2O NPs. X-ray diffraction (XRD) confirmed the crystalline nature of the CuO/Cu2O NPs with a crystallite size varying from 18 to 35 nm. Scanning electron micrographs (SEM) showed that the CuO/Cu2O NPs have a spherical morphology with particle sizes ranging from 25 to 100 nm. The best antioxidant CuO/Cu2O NPs have a phase ratio of about 1:1 CuO/Cu2O with a half-...
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YASSINE BELAICHE 1,3, ABDELHAMID KHELEF 2,3, SALAH EDDINE LAOUINI 1,3, ABDERRHMANE BOUAFIA 1,3 ∗ ... more YASSINE BELAICHE 1,3, ABDELHAMID KHELEF 2,3, SALAH EDDINE LAOUINI 1,3, ABDERRHMANE BOUAFIA 1,3 ∗ , MOHAMMED LAID TEDJANI 1,3, AHMED BARHOUM 4,5 1 Department of Process Engineering and Petrochemistry, Faculty of Technology, University of Echahid Hamma Lakhdar El Oued, 39000 El-Oued, Algeria 2 Department of Chemistry, Faculty of Exact Sciences, University of Echahid Hamma Lakhdar El Oued, 39000 El Oued, Algeria Lab. VTRS, Faculty of Technology, Univ. El-Oued, El oued 39000, Algeria 4 NanoStruc Research Group, Chemistry Department, Faculty of Science, Helwan University, Helwan, Cairo 11795, Egypt 5 School of Chemical Sciences, Fraunhofer Project Centre, Dublin City University, Dublin D09 V209, Ireland 1
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Journal of Inorganic and Organometallic Polymers and Materials
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Applied Sciences
Medicinal plants extracts are a rich natural source of bioactive phytochemicals (mainly polypheno... more Medicinal plants extracts are a rich natural source of bioactive phytochemicals (mainly polyphenols). This study aims at determining the total polyphenols content (TPC) of nine medicinal plants extracted using the UV-visible (UV-Vis) spectroscopic method, along with the Orange Data Mining Tool (ODMT). The TPC for the selected medicinal plant extracts (i.e., Daucus carota L. root, Ruta Chalepensis L. Leaves, Anisosciadium DC. Leaves, Thymus vulgaris L. Leaves, Senna alexandrina leaves, Myrtus communis L. leaves, Silybum Marianum L. Flower, Silybum marianum L. Leaves, and Rosa moschata Flower) was measured using gallic acid (GA) as a standard. The intended method requires a maximum of 1 mg of GA and only 1 mg of the plant extract. The wavelength range of the maximum absorption in the UV-vis spectrum was about 270 nm. For polyphenols, the purposed method linear dynamic concertation range (44.67 to 334.7 mg GA equivalent (GAE)/g dry weight (DW)) with a recovery percentage range of 95.3%...
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Sustainability
In this paper, ZnO nanoparticles (NPs) were greenly synthesized at different pH values of 4, 6, 9... more In this paper, ZnO nanoparticles (NPs) were greenly synthesized at different pH values of 4, 6, 9.5, and 11 via Portulaca oleracea leaf extract, and the effect of pH on the optical and structural properties was studied. UV-Vis spectrophotometers and FTIR spectroscopy characterized the optical properties. Meanwhile, the structural properties were characterized via Scanning Electron Microscopy (SEM) and X-ray Diffraction (XRD). Furthermore, their photocatalytic dye degradation was examined against methyl orange dye. The characterization results have confirmed the successful biosynthesis of ZnO nanoparticles with a size ranging between 22.17 to 27.38 nm. The synthesis pH value significantly influenced ZnO NPs’ optical and morphological properties. The results have also indicated the high performance of the greenly synthesized ZnO NPs for dye degradation.
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Biomass Conversion and Biorefinery
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Inorganic and Nano-Metal Chemistry, May 18, 2022
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Journal of Inorganic and Organometallic Polymers and Materials
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Medicinal plants extracts are a rich natural source of active phytochemicals (Polyphenols) that a... more Medicinal plants extracts are a rich natural source of active phytochemicals (Polyphenols) that are known to have important health-enhancing properties. This study determines the total content of polyphenols of nine medicinal plants extracted using the accurate UV-vis spectroscopic method, along with the Orange Data Mining Tool (ODMT). The total content of polyphenols for the selected medicinal plant extracts (Daucus Carota L., Ruta Chalepensis L., Anisosciadium DC., Thymus Vulgaris, Senna Alexandrina, Myrtus Communis, Silybum Marianum Flower, Silybum marianum Leaves, and Rosa moschata) was measured using gallic acid as a standard. The intended method requires a maximum of 1 mg of Gallic acid and only 1 mg of the plant extract. The wavelength range of the maximum absorption in the UV-vis spectrum was about 270 nm. For polyphenols, the purposed method linear dynamic concertation range (44.67 to 334.7 mg GAE/g DW) with a recovery percentage range of 95.3–104.3%. This method is easy, f...
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Asian Journal of Research in Chemistry, 2020
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Journal of Molecular Structure, 2021
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Asian Journal of Research in Chemistry, 2020
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Mini-Reviews in Organic Chemistry, 2020
In this review, we examine ‘greener’ routes to nanoparticles of iron oxides, in the recent years;... more In this review, we examine ‘greener’ routes to nanoparticles of iron oxides, in the recent years; nanotechnology has emerged as a state-of-the-art and cutting edge technology with multifarious applications in a wide array of fields. Natural products or extracted from natural products, such as different plant extracts, have been used as reductants and as capping agents during synthesis. A very easy, efficient, and environment-friendly protocol was developed to synthesize green nanoparticles (NPs) with an aqueous extract of various plant, phenolic compounds extracted from plants play a major role as non-toxic reducing and capping agents for nanoparticles. Nanoparticles and their compounds are known to exert a strong inhibitory and microbial activity on bacteria, viruses, and fungi. In today's world, because of the epidemic of infectious diseases caused by different pathogenic bacteria and the development of antibiotic resistance, green synthesis, characterization, and application ...
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Applied Sciences
The necessity for further growth in the demand for electricity, particularly in the remote countr... more The necessity for further growth in the demand for electricity, particularly in the remote countryside, has been essential to Algeria’s economic and social progress in recent years. The Saharan regions account for around 80% of Algeria’s surface and have significant power demands. These areas are distinguished by their scattered population, extremely hot weather with high radiation levels (7 kw h/m2/day), and minimal energy use. Photovoltaic technology is one of the finest ways to harness solar power. The conversion of radiant energy (light quanta) into electrical energy can be achieved with the use of semiconductor materials. The effects of a solar cell depend on parameters such as solar cell technology, the position of the photovoltaic array, climate, and geographic data of the site. This paper presented: the role of site choice in the production of photovoltaic electricity. The results obtained for five sites in Algeria: Ouargla, Algers, Bechar, Sidi Bel Abbès, and Batna, confirm...
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Papers by Abdelrahmane Bouafia