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Saleem M, Albaqami MD, Bahajjaj AAA, Ahmed F, Din E, Arifeen WU, Ali S. Wet-Chemical Synthesis of TiO 2/PVDF Membrane for Energy Applications. Molecules 2022; 28:molecules28010285. [PMID: 36615478 PMCID: PMC9822136 DOI: 10.3390/molecules28010285] [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] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/02/2022] [Revised: 12/21/2022] [Accepted: 12/23/2022] [Indexed: 12/31/2022]
Abstract
To satisfy the ever-increasing energy demands, it is of the utmost importance to develop electrochemical materials capable of producing and storing energy in a highly efficient manner. Titanium dioxide (TiO2) has recently emerged as a promising choice in this field due to its non-toxicity, low cost, and eco-friendliness, in addition to its porosity, large surface area, good mechanical strength, and remarkable transport properties. Here, we present titanium dioxide nanoplates/polyvinylidene fluoride (TiO2/PVDF) membranes prepared by a straightforward hydrothermal strategy and vacuum filtration process. The as-synthesized TiO2/PVDF membrane was applied for energy storage applications. The fabricated TiO2/PVDF membrane served as the negative electrode for supercapacitors (SCs). The electrochemical properties of a TiO2/PVDF membrane were explored in an aqueous 6 M KOH electrolyte that exhibited good energy storage performance. Precisely, the TiO2/PVDF membrane delivered a high specific capacitance of 283.74 F/g at 1 A/g and maintained capacitance retention of 91% after 8000 cycles. Thanks to the synergistic effect of TiO2 and PVDF, the TiO2/PVDF membrane provided superior electrochemical performance as an electrode for a supercapacitor. These superior properties will likely be used in next-generation energy storage technologies.
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Affiliation(s)
- Muhammad Saleem
- Department of Physics, The Islamia University of Bahawalpur, Bahawalpur 63100, Pakistan
| | - Munirah D. Albaqami
- Department of Chemistry, College of Science, King Saud University, Riyadh 11451, Saudi Arabia
| | | | - Fahim Ahmed
- Department of Physics, Division of Science and Technology, University of Education, Lahore 54000, Pakistan
| | - ElSayed Din
- Faculty of Engineering and Technology, Future University in Egypt, New Cairo 11835, Egypt
| | - Waqas Ul Arifeen
- School of Mechanical Engineering, Yeungnam University, Gyeongsan-si 38541, Gyeongsangbuk-do, Republic of Korea
- Correspondence: (W.U.A.); (S.A.)
| | - Shafaqat Ali
- Department of Environmental Sciences, Government College University, Faisalabad 38000, Pakistan
- Department of Biological Sciences and Technology, China Medical University, Taichung 40402, Taiwan
- Correspondence: (W.U.A.); (S.A.)
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Ishfaq S, Nisar S, Iqbal S, Ali S, Ali ST, Din E, Alsaiari NS, Dahlous KA, Javed MS, Bocchetta P. A New MBH Adduct as an Efficient Ligand in the Synthesis of Metallodrugs: Characterization, Geometrical Optimization, XRD, Biological Activities, and Molecular Docking Studies. Molecules 2022; 27:molecules27238150. [PMID: 36500251 PMCID: PMC9735827 DOI: 10.3390/molecules27238150] [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] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/04/2022] [Revised: 11/18/2022] [Accepted: 11/18/2022] [Indexed: 11/25/2022]
Abstract
This article reports the synthesis, characterization, geometrical optimization, and biological studies of new MBH-based organometallic compounds of medicinal significance. The ligand (MNHA) was prepared via the Morita-Baylis-Hillman (MBH) synthetic route, from aromatic aldehyde containing multiple functional groups. Metal complexes were prepared in an alkaline medium and under other suitable reaction conditions. Spectral and elemental analyses were used to identify the structural and molecular formulas of each compound. Optimized geometry was determined through density functional theory (DFT) B3LYP and 6-311++ G (d,p) basis set for the MBH adduct, whereas structures of novel complexes were optimized with the semi-empirical PM6 method. Powder XRD analysis furnished the crystal class of complexes, with Co3+, Cr3+, and Mn2+ being cubic, while Ni2+ was hexagonal, and Cu2+ was orthorhombic. Moreover, the ligand, along with Ni2+ and Co3+ complexes, showed profound antibacterial action against S. aureus, E. coli, B. pumilis, and S. typhi. Additionally, all of the complexes were shown to persist in the positive antioxidant potential of the ligand. Contrarily, not a single metal complex conserved the antifungal potentials of the ligand.
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Affiliation(s)
- Shazia Ishfaq
- Department of Chemistry, Faculty of Sciences, University of Karachi, Karachi 75270, Pakistan
| | - Shazia Nisar
- Department of Chemistry, Faculty of Sciences, University of Karachi, Karachi 75270, Pakistan
- Correspondence: (S.N.); (E.D.); (M.S.J.)
| | - Sadaf Iqbal
- Department of Chemistry, Faculty of Sciences, University of Karachi, Karachi 75270, Pakistan
| | - Saqib Ali
- Department of Chemistry, Faculty of Basic and Applied Sciences, University of Kotli, Kotli 11100, Pakistan
| | - Syed Tariq Ali
- Department of Chemistry, Faculty of Sciences, University of Karachi, Karachi 75270, Pakistan
| | - ElSayed Din
- Faculty of Engineering and Technology, Future University in Egypt, New Cairo 11835, Egypt
- Correspondence: (S.N.); (E.D.); (M.S.J.)
| | - Norah Salem Alsaiari
- Department of Chemistry, College of Science, Princess Nourah bint Abdulrahman University, P.O. Box 84428, Riyadh 11671, Saudi Arabia
| | - Kholood A. Dahlous
- Department of Chemistry, College of Science, King Saud University, Riyadh 11451, Saudi Arabia
| | - Muhammad Sufyan Javed
- School of Physical Science and Technology, Lanzhou University, Lanzhou 730000, China
- Correspondence: (S.N.); (E.D.); (M.S.J.)
| | - Patrizia Bocchetta
- Dipartimento di Ingegneria dell’Innovazione, Università del Salento, via Monteroni, 73100 Lecce, Italy
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Din E, Kökdil G, Onur F. A comparison of matrix resolution method, ratio spectra derivative spectrophotometry and HPLC method for the determination of thiamine HCl and pyridoxine HCl in pharmaceutical preparation. J Pharm Biomed Anal 2000; 22:915-23. [PMID: 10857560 DOI: 10.1016/s0731-7085(00)00308-3] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
A comparison of two spectrophotometric methods and a HPLC method were described in this work for the analysis of pyridoxine hydrochloride and thiamine hydrochloride in a vitamin combination. In the first method, A(1)1 (1%, 1 cm) values of these two compounds were calculated using absorbances measured at 246.8 and 290.5 nm in zero-order spectra. The matrix was written for A(1)1 (1%, 1 cm) values and the concentration of both compounds were determined using 'Matlab' software. In the second method, the measurements in the derivative of the ratio spectra were made at 297.8 and 309.5 nm for pyridoxine hydrochloride and at 245.6 and 257.7 nm for thiamine hydrochloride. The calibration graphs were established in the range 8-40 microg/ml of both vitamins. In the HPLC method, the separation of these compounds was realized on a Nucleosil 100-5 C18 column with 0.1 M (NH4)2C03-water methanol (5:15:80 v/v) as the mobile phase. Results of spectrophotometric and HPLC procedures were compared.
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Affiliation(s)
- E Din
- Department of Analytical Chemistry, Faculty of Pharmay, University of Ankara, Tandoğan-Ankara, Turkey.
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