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Yamin M, Ghouri ZK, Rohman N, Syed JA, Skelton A, Ahmed K. Unravelling pH/pKa influence on pH-responsive drug carriers: Insights from ibuprofen-silica interactions and comparative analysis with carbon nanotubes, sulfasalazine, and alendronate. J Mol Graph Model 2024; 128:108720. [PMID: 38324969 DOI: 10.1016/j.jmgm.2024.108720] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2023] [Revised: 01/04/2024] [Accepted: 01/23/2024] [Indexed: 02/09/2024]
Abstract
This study employs density functional theory to explore the interaction between ibuprofen (IBU) and silica, emphasizing the influence of the trimethylsilyl (TMS) functional group for designing pH-responsive drug carriers. The surface (S) and drug (D) molecules' neutral (0) or deprotonated (-1) states were taken into consideration during the investigation. The likelihood of these states was determined based on the pKa values and the desired pH conditions. To calculate the pH-dependent interaction energy (EintpH), four different situations have been identified: S0D0, S0D-1, S-1D0, and S-1D-1.The electrostatic component of interaction energy aligns favorably with its theoretical value in both the Debye-Hückel and Grahame models. The investigation has gathered first-hand experimental data on the drug loading and release of pH-responsive mesoporous silica nanoparticles. Effective drug loading was observed in the acidic environment of the stomach (pH 2-5), followed by a release in the slightly basic to neutral pH of the small intestine (pH 7.4), These findings align with existing literature. The results revealed horizontal drug adherence on silica surfaces, improving binding capabilities. Comparisons were made with combinations involving carboxylated carbon nanotubes and ibuprofen, silica, and sulfasalazine, and silica and alendronate, exploring drug loading/release dynamics associated with positive/negative interaction energies. The investigation, supported by experimental data, contributes valuable insights into pH-responsive mesoporous silica nanoparticles, offering new design possibilities for drug carriers.
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Affiliation(s)
- Marriam Yamin
- Department of Biosciences, Salim Habib University, Karachi, Pakistan
| | - Zafar Khan Ghouri
- L. E. J. Nanotechnology Centre, H. E. J. Research Institute of Chemistry, International Centre for Chemical and Biological Sciences, University of Karachi, Karachi, 75270, Pakistan; Net Zero Industry Innovation Centre, Teesside University, Middlesbrough, Tees Valley TS1 3BX, UK
| | - Nashiour Rohman
- Department of Chemistry, College of Science, Sultan Qaboos University, P. O. Box 36, Al-khoudh, Muscat P. C. 123, Oman
| | - Junaid Ali Syed
- L. E. J. Nanotechnology Centre, H. E. J. Research Institute of Chemistry, International Centre for Chemical and Biological Sciences, University of Karachi, Karachi, 75270, Pakistan
| | - Adam Skelton
- Department of Pharmaceutical Sciences, University of KwaZulu-Natal, Durban, 4000, South Africa.
| | - Khalid Ahmed
- L. E. J. Nanotechnology Centre, H. E. J. Research Institute of Chemistry, International Centre for Chemical and Biological Sciences, University of Karachi, Karachi, 75270, Pakistan.
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2
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Barakat NAM, Gamal S, Ghouri ZK, Fadali OA, Abdelraheem OH, Hashem M, Moustafa HM. Graphitized mango seed as an effective 3D anode in batch and continuous mode microbial fuel cells for sustainable wastewater treatment and power generation. RSC Adv 2024; 14:3163-3177. [PMID: 38249675 PMCID: PMC10797328 DOI: 10.1039/d3ra05084j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2023] [Accepted: 12/08/2023] [Indexed: 01/23/2024] Open
Abstract
Herein, we explored the utilization of graphitized mango seeds as 3D-packed anodes in microbial fuel cells (MFCs) powered by sewage wastewater. Mango seeds were graphitized at different temperatures (800 °C, 900 °C, 1000 °C, and 1100 °C) and their effectiveness as anodes was evaluated. Surface morphology analysis indicated that the proposed anode was characterized by layered branches and micro-sized deep holes, facilitating enhanced biofilm formation and microorganism attachment. Maximum power densities achieved in the MFCs utilizing the mango seed-packed anodes graphitized at 1100 °C and 1000 °C were 2170.8 ± 90 and 1350.6 ± 125 mW m-2, respectively. Furthermore, the weight of the graphitized seed anode demonstrated a positive correlation with the generated power density and cell potential. Specifically, MFCs fabricated with 9 g and 6 g anodes achieved maximum power densities of 2170.8 ± 90 and 1800.5 ± 40 mW m-2, respectively. A continuous mode air cathode MFC employing the proposed graphitized mango anode prepared at 1100 °C and operated at a flow rate of 2 L h-1 generated a stable current density of approximately 12 A m-2 after 15 hours of operation, maintaining its stability for 75 hours. Furthermore, a chemical oxygen demand (COD) removal efficiency of 85% was achieved in an assembled continuous mode MFC. Considering that the proposed MFC was driven by sewage wastewater without the addition of external microorganisms, atmospheric oxygen was used as the electron acceptor through an air cathode mode, agricultural biomass waste was employed for the preparation of the anode, and a higher power density was achieved (2170.8 mW m-2) compared to reported values; it is evident that the proposed graphitized mango seed anode exhibits high efficiency for application in MFCs.
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Affiliation(s)
- Nasser A M Barakat
- Chemical Engineering Department, Faculty of Engineering, Minia University El-Minia 61516 Egypt +20862364420 +20862348005
| | - Shimaa Gamal
- Chemical Engineering Department, Faculty of Engineering, Minia University El-Minia 61516 Egypt +20862364420 +20862348005
| | - Zafar Khan Ghouri
- School of Computing, Engineering and Digital Technologies, Teesside University UK
| | - Olfat A Fadali
- Chemical Engineering Department, Faculty of Engineering, Minia University El-Minia 61516 Egypt +20862364420 +20862348005
| | - Omnia H Abdelraheem
- Sciences Engineering Department, Faculty of Engineering, Beni-Suef University Beni-Suef 62511 Egypt
| | - Mohamed Hashem
- Dental Health Department, College of Applied Medical Sciences, King Saud University Riyadh 11433 Saudi Arabia
| | - Hager M Moustafa
- Chemical Engineering Department, Faculty of Engineering, Minia University El-Minia 61516 Egypt +20862364420 +20862348005
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3
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Ghouri ZK, Hughes DJ, Ahmed K, Elsaid K, Nasef MM, Badreldin A, Abdel-Wahab A. Nanoengineered, Pd-doped Co@C nanoparticles as an effective electrocatalyst for OER in alkaline seawater electrolysis. Sci Rep 2023; 13:20866. [PMID: 38012177 PMCID: PMC10682028 DOI: 10.1038/s41598-023-46292-9] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2023] [Accepted: 10/30/2023] [Indexed: 11/29/2023] Open
Abstract
Water electrolysis is considered one of the major sources of green hydrogen as the fuel of the future. However, due to limited freshwater resources, more interest has been geared toward seawater electrolysis for hydrogen production. The development of effective and selective electrocatalysts from earth-abundant elements for oxygen evolution reaction (OER) as the bottleneck for seawater electrolysis is highly desirable. This work introduces novel Pd-doped Co nanoparticles encapsulated in graphite carbon shell electrode (Pd-doped CoNPs@C shell) as a highly active OER electrocatalyst towards alkaline seawater oxidation, which outperforms the state-of-the-art catalyst, RuO2. Significantly, Pd-doped CoNPs@C shell electrode exhibiting low OER overpotential of ≈213, ≈372, and ≈ 429 mV at 10, 50, and 100 mA/cm2, respectively together with a small Tafel slope of ≈ 120 mV/dec than pure Co@C and Pd@C electrode in alkaline seawater media. The high catalytic activity at the aforementioned current density reveals decent selectivity, thus obviating the evolution of chloride reaction (CER), i.e., ∼490 mV, as competitive to the OER. Results indicated that Pd-doped Co nanoparticles encapsulated in graphite carbon shell (Pd-doped CoNPs@C electrode) could be a very promising candidate for seawater electrolysis.
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Affiliation(s)
- Zafar Khan Ghouri
- School of Computing, Engineering and Digital Technologies, Teesside University, Tees Valley, Middlesbrough, TS1 3BX, UK.
- Center of Hydrogen Energy, Institute of Future Energy, Universiti Teknologi Malaysia, Jalan Sultan Yahya Petra, 54100, Kuala Lumpur, Malaysia.
| | - David James Hughes
- School of Computing, Engineering and Digital Technologies, Teesside University, Tees Valley, Middlesbrough, TS1 3BX, UK
| | - Khalid Ahmed
- International Center for Chemical and Biological Sciences, HEJ Research Institute of Chemistry, University of Karachi, Karachi, 75270, Pakistan
| | - Khaled Elsaid
- Chemical Engineering Program, Texas A&M University at Qatar, P.O. 23874, Doha, Qatar
| | - Mohamed Mahmoud Nasef
- Center of Hydrogen Energy, Institute of Future Energy, Universiti Teknologi Malaysia, Jalan Sultan Yahya Petra, 54100, Kuala Lumpur, Malaysia
- Malaysia-Japan International Institute of Technology, Universiti Teknologi Malaysia, Jalan Sultan Yahya Petra, 54100, Kuala Lumpur, Malaysia
| | - Ahmed Badreldin
- Chemical Engineering Program, Texas A&M University at Qatar, P.O. 23874, Doha, Qatar
| | - Ahmed Abdel-Wahab
- Chemical Engineering Program, Texas A&M University at Qatar, P.O. 23874, Doha, Qatar.
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Ahmad N, Rasheed S, Nabeel MI, Ahmad W, Mohyuddin A, Musharraf SG, Najam-Ul-Haq M, Ghouri ZK, Hussain D. Stearic Acid and CeO 2 Nanoparticles Co-functionalized Cotton Fabric with Enhanced UV-Block, Self-Cleaning, Water-Repellent, and Antibacterial Properties. Langmuir 2023; 39:11571-11581. [PMID: 37549018 DOI: 10.1021/acs.langmuir.3c01002] [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] [Subscribe] [Scholar Register] [Indexed: 08/09/2023]
Abstract
Superhydrophobic cotton fabrics with multifunctional features are highly desired in domestic and outdoor applications. However, the short coating longevity and hazardous reagents significantly reduce their commercial-scale applications. Herein, we introduce CeO2 nanoparticles and stearic acid (SA) to develop a fluorine-free, durable superhydrophobic cotton fabric that mimics the lotus effect. The pristine cotton fabric is treated with APTES-functionalized CeO2 nanoparticles by immersion followed by a dip and drying treatment with a 2% myristic acid solution. This sequential process creates a stable superhydrophobic cotton fabric (SA/CeO2-cotton fabric) with a water contact angle of 158° and a water sliding angle of 5°. The results are attributed to the combined effect of CeO2 nanoparticles and stearic acid that enhances surface roughness and reduces surface sorption energy. APTES facilitates the durable attachment of CeO2 nanoparticles and stearic acid to the cotton fabric. The modified cotton fabric is characterized by advanced analytical tools, demonstrating enhanced superhydrophobicity, self-cleaning, and antiwater absorption properties. Additionally, it exhibits remarkable UV-blocking (UPF 542) and antibacterial properties. The designed superhydrophobic cotton fabric unveils good mechanical, thermal, and chemical durability. The proposed strategy is simple, green, and economical and can be used commercially for functional fabric preparation.
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Affiliation(s)
- Naseer Ahmad
- HEJ Research Institute of Chemistry, International Center for Chemical and Biological Sciences, University of Karachi, Karachi 75270, Pakistan
| | - Sufian Rasheed
- HEJ Research Institute of Chemistry, International Center for Chemical and Biological Sciences, University of Karachi, Karachi 75270, Pakistan
| | - Muhammad Ikram Nabeel
- HEJ Research Institute of Chemistry, International Center for Chemical and Biological Sciences, University of Karachi, Karachi 75270, Pakistan
| | - Waqas Ahmad
- HEJ Research Institute of Chemistry, International Center for Chemical and Biological Sciences, University of Karachi, Karachi 75270, Pakistan
| | - Abrar Mohyuddin
- Department of Chemistry, The Emerson University, Multan 60000, Pakistan
| | - Syed Ghulam Musharraf
- HEJ Research Institute of Chemistry, International Center for Chemical and Biological Sciences, University of Karachi, Karachi 75270, Pakistan
| | - Muhammad Najam-Ul-Haq
- Institute of Chemical Sciences, Bahauddin Zakariya University, Multan 60800, Pakistan
| | - Zafar Khan Ghouri
- HEJ Research Institute of Chemistry, International Center for Chemical and Biological Sciences, University of Karachi, Karachi 75270, Pakistan
| | - Dilshad Hussain
- HEJ Research Institute of Chemistry, International Center for Chemical and Biological Sciences, University of Karachi, Karachi 75270, Pakistan
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5
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Badreldin A, Youssef K, El Ghenymy A, Wubulikasimu Y, Ghouri ZK, Elsaid K, Kumar D, Abdel-Wahab A. Solution Combustion Synthesis of Novel S,B-Codoped CoFe Oxyhydroxides for the Oxygen Evolution Reaction in Saline Water. ACS Omega 2022; 7:5521-5536. [PMID: 35187367 PMCID: PMC8851632 DOI: 10.1021/acsomega.1c06968] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/09/2021] [Accepted: 01/21/2022] [Indexed: 05/13/2023]
Abstract
Green hydrogen presents itself as a clean energy vector, which can be produced by electrolysis of water by utilizing renewable energy such as solar or wind. While current technologies are sufficient to support commercial deployment of fresh water electrolyzers, there remain a few well-defined challenges in the path of commercializing direct seawater electrolyzers, predominantly related to the sluggish oxygen evolution reaction (OER) kinetics and the competing chlorine evolution reaction (CER) at the anode. Herein, we report the facile and swift fabrication of an S,B-codoped CoFe oxyhydroxide via solution combustion synthesis for the OER with apparent CER suppression abilities. The as-prepared S,B-(CoFe)OOH-H attained ultralow overpotentials of 161 and 278 mV for achieving current densities of 10 and 1000 mA cm-2, respectively, in an alkaline saline (1 M KOH + 0.5 M NaCl) electrolyte, with a low Tafel slope of 46.7 mV dec-1. Chronoamperometry testing of the codoped bimetallic oxyhydroxides showed very stable behavior in harsh alkaline saline and in neutral pH saline environments. S,B-(CoFe)OOH-H oxyhydroxide showed a notable decrease in CER production in comparison to the other S,B-codoped counterparts. Selectivity measurements through online FE calculations showed high OER selectivity in alkaline (FE ∼ 97%) and neutral (FE ∼ 91%) pH saline conditions under standard 10 mA cm-2 operation. Moreover, systematic testing in electrolytes at pH values of 14 to 7 yielded promising results, thus bringing direct seawater electrolysis at near-neutral pH conditions closer to realization.
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Affiliation(s)
- Ahmed Badreldin
- Chemical
Engineering Program, Texas A&M University
at Qatar, P.O. 23874 Doha, Qatar
| | - Karim Youssef
- Chemical
Engineering Program, Texas A&M University
at Qatar, P.O. 23874 Doha, Qatar
- Qatar
Shell Service Company W.L.L., P.O. Box 3747 Doha, Qatar
| | | | - Yiming Wubulikasimu
- Chemical
Engineering Program, Texas A&M University
at Qatar, P.O. 23874 Doha, Qatar
| | - Zafar Khan Ghouri
- Chemical
Engineering Program, Texas A&M University
at Qatar, P.O. 23874 Doha, Qatar
- International
Center for Chemical and Biological Sciences, HEJ Research Institute
of Chemistry, University of Karachi, 75270 Karachi, Pakistan
| | - Khaled Elsaid
- Chemical
Engineering Program, Texas A&M University
at Qatar, P.O. 23874 Doha, Qatar
| | - Dharmesh Kumar
- Qatar
Shell Service Company W.L.L., P.O. Box 3747 Doha, Qatar
| | - Ahmed Abdel-Wahab
- Chemical
Engineering Program, Texas A&M University
at Qatar, P.O. 23874 Doha, Qatar
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Badreldin A, Nabeeh A, Ghouri ZK, Abed J, Wang N, Wubulikasimu Y, Youssef K, Kumar D, Stodolny MK, Elsaid K, Sargent EH, Abdel-Wahab A. Early Transition-Metal-Based Binary Oxide/Nitride for Efficient Electrocatalytic Hydrogen Evolution from Saline Water in Different pH Environments. ACS Appl Mater Interfaces 2021; 13:53702-53716. [PMID: 34730350 DOI: 10.1021/acsami.1c13002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
Using abundant seawater can reduce reliance on freshwater resources for hydrogen production from electrocatalytic water splitting. However, seawater has detrimental effects on the stability and activity of the hydrogen evolution reaction (HER) electrocatalysts under different pH conditions. In this work, we report the synthesis of binary metallic core-sheath nitride@oxynitride electrocatalysts [Ni(ETM)]δ+-[O-N]δ-, where ETM is an early transition metal V or Cr. Using NiVN on a nickel foam (NF) substrate, we demonstrate an HER overpotential as low as 32 mV at -10 mA cm-2 in saline water (0.6 M NaCl). The results represent an advancement in saline water HER performance of earth-abundant electrocatalysts, especially under near-neutral pH range (i.e., pH 6-8). Doping ETMs in nickel oxynitrides accelerates the typically rate-determining H2O dissociation step for HER and suppresses chloride deactivation of the catalyst in neutral-pH saline water. Heterointerface synergism occurs through H2O adsorption and dissociation at interfacial oxide character, while adsorbed H* proceeds via Heyrovsky or Tafel step on the nitride character. This electrocatalyst showed stable performance under a constant current density of -50 mA cm-2 for 50 h followed by additional 50 h at -100 mA cm-2 in a neutral saline electrolyte (1 M PB + 0.6 M NaCl). Contrarily, under the same conditions, Pt/C@NF exhibited significantly low performance after a mere 4 h at -50 mA cm-2. The low Tafel slope of 25 mV dec-1 indicated that the reaction is Tafel limited, unlike commercial Pt/C, which is Heyrovsky limited. We close by discussing general principles concerning surface charge delocalization for the design of HER electrocatalysts in pH saline environments.
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Affiliation(s)
- Ahmed Badreldin
- Chemical Engineering Program, Texas A&M University at Qatar, P.O. 23874 Doha, Qatar
| | - Ahmed Nabeeh
- Chemical Engineering Program, Texas A&M University at Qatar, P.O. 23874 Doha, Qatar
| | - Zafar Khan Ghouri
- Chemical Engineering Program, Texas A&M University at Qatar, P.O. 23874 Doha, Qatar
| | - Jehad Abed
- Department of Electrical and Computer Engineering, University of Toronto, Toronto M5S 3G4 Ontario, Canada
| | - Ning Wang
- Department of Electrical and Computer Engineering, University of Toronto, Toronto M5S 3G4 Ontario, Canada
| | - Yiming Wubulikasimu
- Chemical Engineering Program, Texas A&M University at Qatar, P.O. 23874 Doha, Qatar
| | - Karim Youssef
- Qatar Shell Research and Technology Centre, P.O. Box 3747 Doha, Qatar
| | - Dharmesh Kumar
- Qatar Shell Research and Technology Centre, P.O. Box 3747 Doha, Qatar
| | - Maciej K Stodolny
- Shell Global Solutions International B.V., 1031 HW Amsterdam, Netherlands
| | - Khaled Elsaid
- Chemical Engineering Program, Texas A&M University at Qatar, P.O. 23874 Doha, Qatar
| | - Edward H Sargent
- Department of Electrical and Computer Engineering, University of Toronto, Toronto M5S 3G4 Ontario, Canada
| | - Ahmed Abdel-Wahab
- Chemical Engineering Program, Texas A&M University at Qatar, P.O. 23874 Doha, Qatar
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7
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Ghouri ZK, Elsaid K, Badreldin A, Nasef MM, Jusoh NWC, Abdel-Wahab A. Enhanced oxygen evolution reaction on polyethyleneimine functionalized graphene oxide in alkaline medium. Molecular Catalysis 2021. [DOI: 10.1016/j.mcat.2021.111960] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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Zahoor A, Faizan R, Elsaid K, Hashmi S, Butt FA, Ghouri ZK. Synthesis and experimental investigation of δ-MnO2/N-rGO nanocomposite for Li-O2 batteries applications. Chemical Engineering Journal Advances 2021. [DOI: 10.1016/j.ceja.2021.100115] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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9
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Afzal S, Prakash A, Littlewood P, Choudhury H, Khan Ghouri Z, Mansour S, Wang D, Marks T, Weitz E, Stair P, Elbashir N. Front Cover: Catalyst Deactivation by Carbon Deposition: The Remarkable Case of Nickel Confined by Atomic Layer Deposition (13/2021). ChemCatChem 2021. [DOI: 10.1002/cctc.202100764] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Shaik Afzal
- The Artie McFerrin Department of Chemical Engineering Texas A&M University 200 Jack E. Brown Engineering Building College Station TX 77843 USA
- Chemical Engineering Program Texas A&M University at Qatar PO Box 23874 Education City Doha Qatar
| | - Anuj Prakash
- Chemical Engineering Program Texas A&M University at Qatar PO Box 23874 Education City Doha Qatar
| | - Patrick Littlewood
- Department of Chemistry and the Center for Catalysis and Surface Science Northwestern University, Technological Institute L410 2145 Sheridan Road Evanston IL 60208 USA
| | - Hanif Choudhury
- Chemical Engineering Program Texas A&M University at Qatar PO Box 23874 Education City Doha Qatar
| | - Zafar Khan Ghouri
- Chemical Engineering Program Texas A&M University at Qatar PO Box 23874 Education City Doha Qatar
| | - Said Mansour
- Qatar Energy and Environment Research Institute Hamad Bin Khalifa University PO Box 34110 Education City Doha Qatar
| | - Dingdi Wang
- Department of Chemistry and the Center for Catalysis and Surface Science Northwestern University, Technological Institute L410 2145 Sheridan Road Evanston IL 60208 USA
| | - Tobin Marks
- Department of Chemistry and the Center for Catalysis and Surface Science Northwestern University, Technological Institute L410 2145 Sheridan Road Evanston IL 60208 USA
| | - Eric Weitz
- Department of Chemistry and the Center for Catalysis and Surface Science Northwestern University, Technological Institute L410 2145 Sheridan Road Evanston IL 60208 USA
| | - Peter Stair
- Department of Chemistry and the Center for Catalysis and Surface Science Northwestern University, Technological Institute L410 2145 Sheridan Road Evanston IL 60208 USA
| | - Nimir Elbashir
- The Artie McFerrin Department of Chemical Engineering Texas A&M University 200 Jack E. Brown Engineering Building College Station TX 77843 USA
- Chemical Engineering Program Texas A&M University at Qatar PO Box 23874 Education City Doha Qatar
- Gas and Fuels Research Center Texas A&M Engineering Experiment Station 200 Jack E. Brown Engineering Building College Station TX 77843 USA
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Ghouri ZK, Badreldin A, Elsaid K, Kumar D, Youssef K, Abdel-Wahab A. Theoretical and experimental investigations of Co-Cu bimetallic alloys-incorporated carbon nanowires as an efficient bi-functional electrocatalyst for water splitting. J IND ENG CHEM 2021. [DOI: 10.1016/j.jiec.2021.01.027] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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11
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Ghouri ZK, Elsaid K, Abdala A, Al-Meer S, Barakat NAM. Author Correction: Surfactant/organic solvent free single-step engineering of hybrid graphene-Pt/TiO 2 nanostructure: Efficient photocatalytic system for the treatment of wastewater coming from textile industries. Sci Rep 2019; 9:7914. [PMID: 31113991 PMCID: PMC6529627 DOI: 10.1038/s41598-019-44276-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Affiliation(s)
- Zafar Khan Ghouri
- Chemical Engineering Program, Texas A&M University at Qatar, P.O. 23874, Doha, Qatar.
| | - Khaled Elsaid
- Chemical Engineering Program, Texas A&M University at Qatar, P.O. 23874, Doha, Qatar
| | - Ahmed Abdala
- Chemical Engineering Program, Texas A&M University at Qatar, P.O. 23874, Doha, Qatar.
| | - Saeed Al-Meer
- Central Laboratories Unit, Qatar University, P. O. Box: 2713, Doha, Qatar
| | - Nasser A M Barakat
- Department of Organic Materials & Fiber Engineering, Chonbuk National University, Jeonju, 54896, Republic of Korea. .,Department of Chemical Engineering, Minia University, El-Minia, Egypt.
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12
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Ghouri ZK, Elsaid K, Abdala A, Abdullah AM, Akhtar MS. CePd‐Nanoparticles‐Incorporated Carbon Nanofibers as Efficient Counter Electrode for DSSCs. ChemistrySelect 2018. [DOI: 10.1002/slct.201802507] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Zafar Khan Ghouri
- Chemical Engineering ProgramTexas A&M University at Qatar, P.O. 23874, Doha Qatar
| | - Khaled Elsaid
- Chemical Engineering ProgramTexas A&M University at Qatar, P.O. 23874, Doha Qatar
| | - Ahmed Abdala
- Chemical Engineering ProgramTexas A&M University at Qatar, P.O. 23874, Doha Qatar
| | | | - Mohammed Shaheer Akhtar
- New & Renewable Energy Material Development Center (NewREC)Chonbuk National University, Jeonju 561–756 Republic of Korea
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Ghouri ZK, Elsaid K, Abdala A, Al-Meer S, Barakat NAM. Surfactant/organic solvent free single-step engineering of hybrid graphene-Pt/TiO 2 nanostructure: Efficient photocatalytic system for the treatment of wastewater coming from textile industries. Sci Rep 2018; 8:14656. [PMID: 30279571 PMCID: PMC6168455 DOI: 10.1038/s41598-018-33108-4] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2018] [Accepted: 09/21/2018] [Indexed: 01/19/2023] Open
Abstract
In this study, hybrid graphene-Pt/TiO2 nanostructure were synthesized by single-step, inexpensive and surfactant/organic solvent free route; hydrothermal technique. The physicochemical properties of hybrid graphene-Pt/TiO2 nanostructure were carefully analyzed by multiple techniques, including X-ray diffractometer (XRD), X-ray photoelectron spectroscopy (XPS), field emission scanning electron microscope (FESEM) and transmission electron microscope (TEM). The synthesized hybrid nanostructures were utilized as photocatalyst for the degradation of methylene blue (MB) dye under natural environment at average ambient temperature and mean daily global solar radiation, of about 22–25 °C and 374.9 mWh/cm2, respectively. The activity performance indicated considerable degradation of methylene blue (MB) dye and was in the following order Gr (13%), TiO2 (60%) and hybrid graphene-Pt/TiO2 nanostructure (90%) over 21 min under the natural light illumination. The physiochemical characterization suggests that, the tightly attached metalized TiO2 nanoparticles (Pt-TiO2) on the high surface area graphene sheets improved utilization of visible light and increased separation and transfer of photo-excited electron (ē) hole (h+) pairs. Notably, the hybrid graphene-Pt/TiO2 nanostructure exhibited an excellent cyclic stability for methylene blue (MB) dye removal. Finally, the kinetic behavior indicated that the photocatalytic degradation reaction of the dye obeyed the pseudo-first order (Langmuir-Hinshelwood) kinetics model.
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Affiliation(s)
- Zafar Khan Ghouri
- Chemical Engineering Program, Texas A&M University at Qatar, P.O. 23874, Doha, Qatar.
| | - Khaled Elsaid
- Chemical Engineering Program, Texas A&M University at Qatar, P.O. 23874, Doha, Qatar
| | - Ahmed Abdala
- Chemical Engineering Program, Texas A&M University at Qatar, P.O. 23874, Doha, Qatar.
| | - Saeed Al-Meer
- Central Laboratories Unit, Qatar University, P. O. Box: 2713, Doha, Qatar
| | - Nasser A M Barakat
- Department of Organic Materials & Fiber Engineering, Chonbuk National University, Jeonju, 54896, Republic of Korea. .,Department of Chemical Engineering, Minia University, El-Minia, Egypt.
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Barakat NA, Motlak M, Ghouri ZK, Yasin AS, El-Newehy MH, Al-Deyab SS. Nickel nanoparticles-decorated graphene as highly effective and stable electrocatalyst for urea electrooxidation. ACTA ACUST UNITED AC 2016. [DOI: 10.1016/j.molcata.2016.05.011] [Citation(s) in RCA: 60] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Saud PS, Pant B, Twari AP, Ghouri ZK, Park M, Kim HY. Effective photocatalytic efficacy of hydrothermally synthesized silver phosphate decorated titanium dioxide nanocomposite fibers. J Colloid Interface Sci 2016; 465:225-32. [DOI: 10.1016/j.jcis.2015.11.072] [Citation(s) in RCA: 44] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2015] [Revised: 11/27/2015] [Accepted: 11/30/2015] [Indexed: 10/22/2022]
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Ghouri ZK, Barakat NA, Kim HY, Park M, Khalil KA, El-Newehy MH, Al-Deyab SS. Nano-engineered ZnO/CeO2 dots@CNFs for fuel cell application. ARAB J CHEM 2016. [DOI: 10.1016/j.arabjc.2015.05.024] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
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Obaid M, Ghouri ZK, Fadali OA, Khalil KA, Almajid AA, Barakat NAM. Amorphous SiO2 NP-Incorporated Poly(vinylidene fluoride) Electrospun Nanofiber Membrane for High Flux Forward Osmosis Desalination. ACS Appl Mater Interfaces 2016; 8:4561-74. [PMID: 26684268 DOI: 10.1021/acsami.5b09945] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Novel amorphous silica nanoparticle-incorporated poly(vinylidine fluoride) electrospun nanofiber mats are introduced as effective membranes for forward osmosis desalination technology. The influence of the inorganic nanoparticle content on water flux and salt rejection was investigated by preparing electrospun membranes with 0, 0.5, 1, 2, and 5 wt % SiO2 nanoparticles. A laboratory-scale forward osmosis cell was utilized to validate the performance of the introduced membranes using fresh water as a feed and different brines as draw solution (0.5, 1, 1.5, and 2 M NaCl). The results indicated that the membrane embedding 0.5 wt % displays constant salt rejection of 99.7% and water flux of 83 L m(-2) h(-1) with 2 M NaCl draw solution. Moreover, this formulation displayed the lowest structural parameter (S = 29.7 μm), which represents approximately 69% reduction compared to the pristine membrane. Moreover, this study emphasizes the capability of the electrospinning process in synthesizing effective membranes as the observed water flux and average salt rejection of the pristine poly(vinylidine fluoride) membrane was 32 L m(-2) h(-1) (at 2 M NaCl draw solution) and 99%, respectively. On the other hand, increasing the inorganic nanoparticles to 5 wt % showed negative influence on the salt rejection as the observed salt flux was 1651 mol m(-2) h(-1). Besides the aforementioned distinct performance, studies of the mechanical properties, porosity, and wettability concluded that the introduced membranes are effective for forward osmosis desalination technology.
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Affiliation(s)
- M Obaid
- Bionanosystem Engineering Department, Chonbuk National University , Jeonju 561-756, Republic of South Korea
| | - Zafar Khan Ghouri
- Organic Materials and Fiber Engineering Department, Chonbuk National University , Jeonju 561-756, Republic of South Korea
| | - Olfat A Fadali
- Chemical Engineering Department, Faculty of Engineering, Minia University , Minia, Egypt
| | - Khalil Abdelrazek Khalil
- Mechanical Engineering Department, King Saud University , P.O. Box 800, Riyadh 11421, Saudi Arabia
- Materials Engineering and Design Department, Aswan University , Aswan, Egypt
| | - Abdulhakim A Almajid
- Mechanical Engineering Department, King Saud University , P.O. Box 800, Riyadh 11421, Saudi Arabia
| | - Nasser A M Barakat
- Organic Materials and Fiber Engineering Department, Chonbuk National University , Jeonju 561-756, Republic of South Korea
- Chemical Engineering Department, Faculty of Engineering, Minia University , Minia, Egypt
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Ghouri ZK, Barakat NA, Alam AM, Alsoufi MS, Bawazeer TM, Mohamed AF, Kim HY. Synthesis and characterization of Nitrogen-doped &CaCO3-decorated reduced graphene oxide nanocomposite for electrochemical supercapacitors. Electrochim Acta 2015. [DOI: 10.1016/j.electacta.2015.10.069] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Han W, Ding B, Park M, Cui F, Ghouri ZK, Saud PS, Kim HY. Facile synthesis of luminescent and amorphous La₂O₃-ZrO₂:Eu³⁺ nanofibrous membranes with robust softness. Nanoscale 2015; 7:14248-14253. [PMID: 26139103 DOI: 10.1039/c5nr02173a] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Novel luminescent and amorphous La2O3-ZrO2:Eu(3+) (LZE) nanofibrous membranes with robust softness are fabricated for the first time via a facile electrospinning technique. By incorporating zirconium oxide, the as-prepared lanthanum oxide nanofibrous membranes can be dramatically changed from extreme fragility to robust softness. Meanwhile, the softness and luminescent performance of LZE nanofibrous membranes can be finely controlled by regulating the doping concentration of zirconium oxide and europium in lanthanum oxide nanofibers. Additionally, the crystal structure analysis using X-ray diffractometer and high resolution transmission electron microscopy measurements have confirmed the correlation between the amorphous structure and softness. Furthermore, LZE membranes show the characteristic emission of Eu(3+) corresponding to (5)D(0, 1, 2)-(7)F(0, 1, 2, 3, 4) transitions due to an efficient energy transfer from O(2-) to Eu(3+). The LZE nanofibrous membranes with the optimum doping Eu(3+) concentration of 3 mol% exhibit excellent softness and luminescent properties, which make the materials to have potential applications in fluorescent lamps and field emission displays.
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Affiliation(s)
- Weidong Han
- Department of BIN Fusion Technology, Chonbuk National University, Jeonju 561-756, Republic of Korea.
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Ghouri ZK, Barakat NM, Kim HY. Synthesis and Electrochemical Properties of MnO2 and Co-Decorated Graphene as Novel Nanocomposite for Electrochemical Super Capacitors Application. ACTA ACUST UNITED AC 2015. [DOI: 10.1166/eef.2015.1136] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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