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Eliwa AS, Hefnawy MA, Medany SS, Deghadi RG, Hosny WM, Mohamed GG. Synthesis and characterization of lead-based metal-organic framework nano-needles for effective water splitting application. Sci Rep 2023; 13:12531. [PMID: 37532800 PMCID: PMC10397286 DOI: 10.1038/s41598-023-39697-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2023] [Accepted: 07/29/2023] [Indexed: 08/04/2023] Open
Abstract
Metal organic frameworks (MOFs) are a class of porous materials characterized by robust linkages between organic ligands and metal ions. Metal-organic frameworks (MOFs) exhibit significant characteristics such as high porosity, extensive surface area, and exceptional chemical stability, provided the constituent components are meticulously selected. A metal-organic framework (MOF) containing lead and ligands derived from 4-aminobenzoic acid and 2-carboxybenzaldehyde has been synthesized using the sonochemical methodology. The crystals produced were subjected to various analytical techniques such as Fourier-transform infrared spectroscopy (FT-IR), Powder X-ray diffraction (PXRD), scanning electron microscopy (SEM), energy dispersive X-ray (EDX), Brunauer-Emmett-Teller (BET), and thermal analysis. The BET analysis yielded results indicating a surface area was found to be 1304.27 m2 g-1. The total pore volume was estimated as 2.13 cm3 g-1 with an average pore size of 4.61 nm., rendering them highly advantageous for a diverse range of practical applications. The activity of the modified Pb-MOF electrode was employed toward water-splitting applications. The electrode reached the current density of 50 mA cm-2 at an overpotential of - 0.6 V (vs. RHE) for hydrogen evolution, and 50 mA cm-2 at an overpotential of 1.7 V (vs. RHE) for oxygen evolution.
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Affiliation(s)
- Ayman S Eliwa
- Chemistry Department, Faculty of Science, Cairo University, Giza, Egypt
| | - Mahmoud A Hefnawy
- Chemistry Department, Faculty of Science, Cairo University, Giza, Egypt.
| | - Shymaa S Medany
- Chemistry Department, Faculty of Science, Cairo University, Giza, Egypt
| | - Reem G Deghadi
- Chemistry Department, Faculty of Science, Cairo University, Giza, Egypt
| | - Wafaa M Hosny
- Chemistry Department, Faculty of Science, Cairo University, Giza, Egypt
| | - Gehad G Mohamed
- Chemistry Department, Faculty of Science, Cairo University, Giza, Egypt.
- Nanoscience Department, Basic and Applied Sciences Institute, Egypt-Japan University of Science and Technology, Alexandria, Egypt.
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Khan ZUH, Gul NS, Mehmood F, Sabahat S, Muhammad N, Rahim A, Iqbal J, Khasim S, Salam MA, Khan TM, Wu J. Green synthesis of lead oxide nanoparticles for photo-electrocatalytic and antimicrobial applications. Front Chem 2023; 11:1175114. [PMID: 37601905 PMCID: PMC10435987 DOI: 10.3389/fchem.2023.1175114] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2023] [Accepted: 07/03/2023] [Indexed: 08/22/2023] Open
Abstract
Synthesis of nanoparticles (NPs) for many different uses requires the development of environmentally friendly synthesis protocols. In this article, we present a simple and environmentally friendly method to synthesize lead oxide (PbO) NPs from the plant material of the Mangifera indica. Analytical techniques such as spectroscopy, X-ray diffraction, and microscopy were used to characterize the synthesized PbO NPs, and their photo-electrocatalytic and antifungal properties were also evaluated. H2O2 was used to investigate the efficacy of removing methylene blue dye. At a range of pH values, H2O2 was used to study the role of hydroxyl radicals in the breakdown of methylene blue dye. Methylene blue dyes are more easily eliminated due to increased generation of the *OH radical during removal. Dye degradation was also significantly affected by the aqueous medium's pH. Additionally, the electrocatalytic properties of the PbO NPs adapted electrode were studied in CH3COONa aqueous solution using cyclic voltammetry. Excellent electrocatalytic properties of the PbO NPs are shown by the unity of the anodic and cathodic peaks of the modified electrode in comparison to the stranded electrode. Aspergillus flavus, Aspergillus niger, and Candida glabrata were some fungi tested with the PbO NPs. Against A. flavus (40%) and A. niger (50%), and C. glabrata (75%), the PbO NPs display an excellent inhibition zone. Finally, PbO NPs were used in antioxidant studies with the powerful antioxidant 2, 2 diphenyl-1-picrylhydrazyl (DPPH). This study presents a simple and environmentally friendly method for synthesizing PbO NPs with multiple uses, including photo-electrocatalytic and antimicrobial activity.
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Affiliation(s)
- Zia Ul Haq Khan
- Department of Chemistry, COMSATS University Islamabad, Islamabad, Pakistan
| | - Noor Shad Gul
- Drug Discovery Research Center, Southwest Medical University, Luzhou, China
- Department of Pharmacology, Laboratory of Cardiovascular Pharmacology, The School of Pharmacy, Southwest Medical University, Luzhou, China
| | - Faisal Mehmood
- Department of Environmental Sciences, COMSATS University Islamabad, Islamabad, Pakistan
| | - Sana Sabahat
- Department of Chemistry, COMSATS University Islamabad, Islamabad, Pakistan
| | - Nawshad Muhammad
- Department of Dental Materials, Institute of Basic Medical Sciences, Khyber Medical University, Peshawar, Pakistan
| | - Abdur Rahim
- Department of Chemistry, COMSATS University Islamabad, Islamabad, Pakistan
| | - Jibran Iqbal
- College of Natural and Health Sciences, Zayed University, Abu Dhabi, United Arab Emirates
| | - Syed Khasim
- Department of Physics, Faculty of Science, University of Tabuk, Tabuk, Saudi Arabia
| | - Mohamed Abdel Salam
- Department of Chemistry, Faculty of Science, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Taj Malook Khan
- Drug Discovery Research Center, Southwest Medical University, Luzhou, China
- Department of Pharmacology, Laboratory of Cardiovascular Pharmacology, The School of Pharmacy, Southwest Medical University, Luzhou, China
| | - Jianbo Wu
- Drug Discovery Research Center, Southwest Medical University, Luzhou, China
- Department of Pharmacology, Laboratory of Cardiovascular Pharmacology, The School of Pharmacy, Southwest Medical University, Luzhou, China
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Geldasa FT, Kebede MA, Shura MW, Hone FG. Experimental and computational study of metal oxide nanoparticles for the photocatalytic degradation of organic pollutants: a review. RSC Adv 2023; 13:18404-18442. [PMID: 37342807 PMCID: PMC10278095 DOI: 10.1039/d3ra01505j] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2023] [Accepted: 05/31/2023] [Indexed: 06/23/2023] Open
Abstract
Photocatalysis is a more proficient technique that involves the breakdown or decomposition of different organic contaminants, various dyes, and harmful viruses and fungi using UV or visible light solar spectrum. Metal oxides are considered promising candidate photocatalysts owing to their low cost, efficiency, simple fabricating method, sufficient availability, and environment-friendliness for photocatalytic applications. Among metal oxides, TiO2 is the most studied photocatalyst and is highly applied in wastewater treatment and hydrogen production. However, TiO2 is relatively active only under ultraviolet light due to its wide bandgap, which limits its applicability because the production of ultraviolet is expensive. At present, the discovery of a photocatalyst of suitable bandgap with visible light or modification of the existing photocatalyst is becoming very attractive for photocatalysis technology. However, the major drawbacks of photocatalysts are the high recombination rate of photogenerated electron-hole pairs, the ultraviolet light activity limitations, and low surface coverage. In this review, the most commonly used synthesis method for metal oxide nanoparticles, photocatalytic applications of metal oxides, and applications and toxicity of different dyes are comprehensively highlighted. In addition, the challenges in the photocatalytic applications of metal oxides, strategies to suppress these challenges, and metal oxide studied by density functional theory for photocatalytic applications are described in detail.
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Affiliation(s)
- Fikadu Takele Geldasa
- Adama Science and Technology University, Department of Applied Physics P. O. Box1888 Adama Ethiopia
- Oda Bultum University, Department of Physics P. O. Box 226, Chiro Ethiopia
| | - Mesfin Abayneh Kebede
- Institute for Nanotechnology and Water Sustainability, College of Science, Engineering and Technology, University of South Africa Florida Science Campus Johannesburg 1710 South Africa
| | - Megersa Wodajo Shura
- Adama Science and Technology University, Department of Applied Physics P. O. Box1888 Adama Ethiopia
| | - Fekadu Gashaw Hone
- Addis Ababa University, Department of Physics P.O. Box: 1176 Addis Ababa Ethiopia
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Alam MM, Asiri AM, Rahman MM. An Efficient Enzyme-Less Uric Acid Sensor Development Based on PbO-Doped NiO Nanocomposites. BIOSENSORS 2022; 12:bios12060381. [PMID: 35735529 PMCID: PMC9221126 DOI: 10.3390/bios12060381] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/24/2022] [Revised: 05/26/2022] [Accepted: 05/27/2022] [Indexed: 11/16/2022]
Abstract
Here, the voltammetric electrochemical approach was applied to detect uric acid (UA) in a conductive sensing medium (phosphate buffer solution-PBS) by using PbO-doped NiO nanocomposites (NCs)-decorated glassy carbon electrode (GCE) performing as working electrode. The wet-chemically prepared PbO-doped NiO NCs were subjected to characterization by the implementation of XRD, FESEM, XPS, and EDS analysis. The modified GCE was used to detect uric acid (UA) in an enzyme-free conductive buffer (PBS) of pH = 7.0. As the outcomes of this study reveal, it exhibited good sensitivity of 0.2315 µAµM−1cm−2 and 0.2233 µAµM−1cm−2, corresponding to cyclic (CV) and differential pulse (DPV) voltammetric analysis of UA, respectively. Furthermore, the proposed UA sensor showed a wider detection (0.15~1.35 mM) range in both electrochemical analysis methods (CV & DPV). In addition, the investigated UA sensor displayed appreciable limit of detection (LOD) of 41.0 ± 2.05 µM by CV and 43.0 ± 2.14 µM by DPV. Good reproducibility performance, faster response time and long-time stability in detection of UA were perceived in both electrochemical analysis methods. Finally, successful analysis of the bio-samples was performed using the recovery method, and the results were found to be quite acceptable in terms of accuracy. Thus, the findings indicate a reliable approach for the development of 5th generation biosensors using metal-oxides as sensing substrate to fulfill the requirements of portable use for in situ detection.
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Affiliation(s)
- Md Mahmud Alam
- Center of Excellence for Advanced Materials Research (CEAMR), King Abdulaziz University, P.O. Box 80203, Jeddah 21589, Saudi Arabia; (M.M.A.); (A.M.A.)
| | - Abdullah M. Asiri
- Center of Excellence for Advanced Materials Research (CEAMR), King Abdulaziz University, P.O. Box 80203, Jeddah 21589, Saudi Arabia; (M.M.A.); (A.M.A.)
- Chemistry Department, Faculty of Science, King Abdulaziz University, P.O. Box 80203, Jeddah 21589, Saudi Arabia
| | - Mohammed M. Rahman
- Center of Excellence for Advanced Materials Research (CEAMR), King Abdulaziz University, P.O. Box 80203, Jeddah 21589, Saudi Arabia; (M.M.A.); (A.M.A.)
- Chemistry Department, Faculty of Science, King Abdulaziz University, P.O. Box 80203, Jeddah 21589, Saudi Arabia
- Correspondence:
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