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Al-Yunus A, Al-Arjan W, Traboulsi H, Schuarca R, Chando P, Hosein ID, Hessien M. Effect of Synthesis Conditions on CuO-NiO Nanocomposites Synthesized via Saponin-Green/Microwave Assisted-Hydrothermal Method. NANOMATERIALS (BASEL, SWITZERLAND) 2024; 14:308. [PMID: 38334578 PMCID: PMC10857104 DOI: 10.3390/nano14030308] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/14/2024] [Revised: 01/31/2024] [Accepted: 02/01/2024] [Indexed: 02/10/2024]
Abstract
This work presents the synthesis of CuO-NiO nanocomposites under different synthesis conditions. Nanocomposites were synthesized by merging a green synthesis process with a microwave-assisted hydrothermal method. The synthesis conditions were as follows: concentration of the metal precursors (0.05, 0.1, and 0.2 M), pH (9, 10, and 11), synthesis temperature (150 °C, 200 °C, and 250 °C), microwave treatment time (15, 30, and 45 min), and extract concentration (20 and 40 mL of 1 g saponin/10 mL water, and 30 mL of 2 g saponin/10 mL water). The phases and crystallite sizes of the calcined nanocomposites were characterized using XRD and band gap via UV-Vis spectroscopy, and their morphologies were investigated using SEM and TEM. The XRD results confirmed the formation of a face-centered cubic phase for nickel oxide, while copper oxide has a monoclinic phase. The calculated crystallite size was in the range of 29-39 nm. The direct band gaps of the samples prepared in this work were in the range of 2.39-3.17 eV.
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Affiliation(s)
- Amnah Al-Yunus
- Department of Chemistry, College of Science, King Faisal University, P.O. Box 400, Alahsa 31982, Saudi Arabia
| | - Wafa Al-Arjan
- Department of Chemistry, College of Science, King Faisal University, P.O. Box 400, Alahsa 31982, Saudi Arabia
| | - Hassan Traboulsi
- Department of Chemistry, College of Science, King Faisal University, P.O. Box 400, Alahsa 31982, Saudi Arabia
- Department of Chemistry, Champlain College, 900 Riverside Drive, St-Lambert, QC J4P 3P2, Canada
| | - Robson Schuarca
- Department of Biomedical and Chemical Engineering, College of Engineering and Computer Science, Syracuse University, 339 Link Hall, Syracuse, NY 13244, USA
| | - Paul Chando
- Department of Biomedical and Chemical Engineering, College of Engineering and Computer Science, Syracuse University, 339 Link Hall, Syracuse, NY 13244, USA
| | - Ian D. Hosein
- Department of Biomedical and Chemical Engineering, College of Engineering and Computer Science, Syracuse University, 339 Link Hall, Syracuse, NY 13244, USA
| | - Manal Hessien
- Department of Chemistry, College of Science, King Faisal University, P.O. Box 400, Alahsa 31982, Saudi Arabia
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Alswat AA, Ashmali AM, Alqasmi TM, Alhassani HR, Alshorifi FT. Role of nanohybrid NiO–Fe3O4 in enhancing the adsorptive performance of activated carbon synthesized from Yemeni-Khat leave in removal of Pb (II) and Hg (II) from aquatic systems. Heliyon 2023; 9:e14301. [PMID: 36967866 PMCID: PMC10034445 DOI: 10.1016/j.heliyon.2023.e14301] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2022] [Revised: 02/24/2023] [Accepted: 02/28/2023] [Indexed: 03/07/2023] Open
Abstract
Over years, existence of toxic chemical heavy metal in aquatic systems has motivated more research studies toward the preparation of effective stable solid adsorbents for the removal of toxic chemical pollutants. Therefore, in the current research study, activated carbon adsorbent (AC) was synthesized from Yemeni khat (catha edulis) leaves which are considered as waste accumulated on waste disposal areas in Yemen. KOH (2.0 N) was used as a chemical activator to produce the AC material which was subsequently heated at 400 °C. A simple co-precipitation method was used to chemically modify AC with varying weight ratios of NiO-Fe3O4 NPs (5, 15, and 25 wt %). The modified AC was used to remove toxic Pb(II) and Hg(II) ions from aquatic systems. Numerous techniques, which included x-ray diffraction (XRD), Fourier transforms infrared (FTIR), field emission scanning electron microscope (FE-SEM), and N2 adsorption/desorption isotherms, were used to confirm the morphology of AC and 5, 15, and 25 wt% NiO-Fe3O4/AC samples. The study findings demonstrated that, NiO-Fe3O4 nanoparticles improved the adsorption efficiency for toxic Pb(II) and Hg (II) ions. The AC adsorbent attained maximum removal efficiencies of 88.95% and 87.56% for Pb (II) and Hg (II) ions, respectively. In contrast, 15-NF/AC NC sample successfully attained the highest removal efficiencies of 100% for pb(II) and 99.71% for Hg(II). According to the experimental findings, the prepared NF/AC adsorbents were effective and they can be used as inexpensive and stable solid nanoadsorbents in water treatment.
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Kuppu SV, Sonaimuthu M, Marimuthu S, Venkatesan S, Murugesan B, Ahmed N, Karuppanan A, Sengodu P, Jeyaraman A, Thambusamy S, Lee YR. NiO@ZnO composite bimetallic nanocrystalline decorated TiO2-CsPbI3 photo-anode surface modifications for perovskite-sensitized solar cell applications. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2022.134763] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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Gnanasekaran L, Chen WH, Soto-Moscoso M. Highly operative NiO/ZnO nanocomposites for photocatalytic removal of azo dye. CHEMOSPHERE 2022; 308:136528. [PMID: 36165839 DOI: 10.1016/j.chemosphere.2022.136528] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/14/2022] [Revised: 09/09/2022] [Accepted: 09/15/2022] [Indexed: 06/16/2023]
Abstract
The far-reaching technology of semiconductors in treating water pollutants reduces serious health hazards to humans and other eco-systems. With this interpretation, this work is attempted for the first time to synthesize nanosized pristine NiO and ZnO materials, and NiO/ZnO (70:30, 50:50) composites by co-precipitation method. The synthesized materials were then portrayed for their properties using various instrumental techniques such as X-ray diffraction (XRD), Transmission electron microscope (TEM), Energy dispersive X-ray spectrum (EDXS), Fourier transform Infrared spectrum (FT-IR). The main approach of this work is connected with the ultra violet (UV) photocatalytic degradation of MO (methyl orange) by employing the synthesized nanomaterials as catalysts. In view of results, the photocatalytic degradation of NiO/ZnO (70:30) has reported the greatest efficiency than the other catalysts. This outcome lies with the consideration of higher content of NiO present in the composite than ZnO. Further, there was the existence of higher surface area analysed from the BET result. Also, the NiO/ZnO (50:50) sample showed lower degradation efficiency in terms of formed agglomeration when surveyed through TEM. Besides, the positive mechanism of photocatalysis reaction forms the essential hydroxyl radicals which correspond to MO degradation. Moreover, the highly efficient NiO/ZnO (70:30) sample has been trialled for photocatalytic repetition process to observe the stability of degradation. It has accounted with good efficiency for 5 repeated cycles. Finally for UV degradation, the recognized photocatalytic aspect was due to the surface morphology enhanced surface area, synergistic effects of metal oxides and electron-hole charge separation.
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Affiliation(s)
- Lalitha Gnanasekaran
- Departamento de Ingeniería Mecánica, Facultad de Ingeniería, Universidad de Tarapacá, Avda. General Velásquez 1775, Arica, Chile.
| | - Wei-Hsin Chen
- Department of Aeronautics and Astronautics, National Cheng Kung University, Tainan 701, Taiwan; Research Center for Smart Sustainable Circular Economy, Tunghai University, Taichung 407, Taiwan; Department of Mechanical Engineering, National Chin-Yi University of Technology, Taichung 411, Taiwan
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Prabhu S, Daniel Thangadurai T, Indumathi T, Kalugasalam P. Enhanced visible light induced dye degradation and antibacterial activities of ZnO/NiO nanocomposite synthesized using Clitoria ternatea flower extract. INORG CHEM COMMUN 2022. [DOI: 10.1016/j.inoche.2022.110077] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Jamila GS, Sajjad S, Leghari SAK, Mehboob M, Flox C. Enhanced electron transport by Fe2O3 on NCQDs–MgO nanostructure for solar photocatalysis and electrocatalytic water splitting. APPLIED NANOSCIENCE 2022. [DOI: 10.1007/s13204-022-02424-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Phytogenic Synthesis and Characterization of NiO-ZnO Nanocomposite for the Photodegradation of Brilliant Green and 4-Nitrophenol. J CHEM-NY 2021. [DOI: 10.1155/2021/3475036] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
The NiO-ZnO nanocomposite (NiO-ZnO NC) was synthesized by ecofriendly process by using Diospyros kaki (D. kaki) extract of leaves as reducing and capping agents. X-ray diffraction (XRD) was used for examined crystallinity, cell dimensions, and crystallite size (7.6 nm). To determine the purity of sample and weight percentage, energy dispersive X-ray (EDX) is used. The surface morphology was determined by scanning electron microscopy (SEM) and transmission electron microscopy (TEM). By using Fourier transform infrared spectroscopy (FTIR), functional groups in samples were determined. By using diffuse reflectance data (DRS), band gap energy calculated via Tauc plot was 3.23 eV. The photocatalytic activity was checked against brilliant green (BG) and 4-nitrophenol (4-NP) and 92.5% and 69.7% of brilliant green (BG) and 4-nitrophenol (4-NP) were degraded with rate of degradation which were 0.0281 and 0.011 min−1.
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Yousaf Z, Sajjad S, Ahmed Khan Leghari S, Mehboob M, Kanwal A, Uzair B. Interfacial charge transfer via 2D-NiO and 2D-graphene nanosheets combination for significant visible photocatalysis. J SOLID STATE CHEM 2020. [DOI: 10.1016/j.jssc.2020.121606] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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