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Parveen M, Tahira A, Mahar IA, Bhatti MA, Dawi E, Nafady A, Alshammari RH, Vigolo B, Qi K, Ibupoto ZH. Green structure orienting and reducing agents of wheat peel extract induced abundant surface oxygen vacancies and transformed the nanoflake morphology of NiO into a plate-like shape with enhanced non-enzymatic urea sensing application. RSC Adv 2023; 13:34122-34135. [PMID: 38019984 PMCID: PMC10661683 DOI: 10.1039/d3ra06296a] [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: 09/15/2023] [Accepted: 11/05/2023] [Indexed: 12/01/2023] Open
Abstract
Researchers are increasingly focusing on using biomass waste for green synthesis of nanostructured materials since green reducing, capping, stabilizing and orientation agents play a significant role in final application. Wheat peel extract contains a rich source of reducing and structure orienting agents that are not utilized for morphological transformation of NiO nanostructures. Our study focuses on the role of wheat peel extract in morphological transformation during the synthesis of NiO nanostructures as well as in non-enzymatic electrochemical urea sensing. It was observed that the morphological transformation of NiO flakes into nanoplatelets took place in the presence of wheat peel extract during the preparation of NiO nanostructures and that both the lateral size and thickness of the nanostructures were significantly reduced. Wheat peel extract was also found to reduce the optical band gap of NiO. A NiO nanostructure prepared with 5 mL of wheat peel extract (sample 2) was highly efficient for the detection of urea without the use of urease enzyme. It has been demonstrated that the induced modification of NiO nanoplatelets through the use of structure-orienting agents in the wheat peel has enhanced their electrochemical performance. A linear range of 0.1 mM to 13 mM was achieved with a detection limit of 0.003 mM in the proposed urea sensor. The performance of the presented non-enzymatic urea sensor was evaluated in terms of selectivity, stability, reproducibility, and practical application, and the results were highly satisfactory. As a result of the high surface active sites on sample 2, the low charge transfer resistance, as well as the high exposure to the surface active sites of wheat peel extract, sample 2 demonstrated enhanced performance. The wheat peel extract could be used for the green synthesis of a wide range of nanostructured materials, particularly metal/metal oxides for various electrochemical applications.
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Affiliation(s)
- Mehnaz Parveen
- Institute of Chemistry, University of Sindh Jamshoro 76080 Sindh Pakistan
| | - Aneela Tahira
- Institute of Chemistry, Shah Abdul Latif University Khairpur Mirs Sindh Pakistan
| | - Ihsan Ali Mahar
- Institute of Chemistry, University of Sindh Jamshoro 76080 Sindh Pakistan
| | - Muhammad Ali Bhatti
- Institute of Environmental Sciences, University of Sindh Jamshoro 76080 Sindh Pakistan
| | - Elmuez Dawi
- College of Humanities and Sciences, Department of Mathematics and Sciences, Ajman University P.O. Box 346 United Arab Emirates
| | - Ayman Nafady
- Chemistry Department, College of Science, King Saud University Riyadh 11451 Saudi Arabia
| | - Riyadh H Alshammari
- Chemistry Department, College of Science, King Saud University Riyadh 11451 Saudi Arabia
| | | | - Kezhen Qi
- College of Pharmacy, Dali University Dali Yunnan 671000 China
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Aftab U, Solangi MY, Tahira A, Hanan A, Abro MI, Karsy A, Dawi E, Bhatti MA, Alshammari RH, Nafady A, Gradone A, Mazzaro R, Morandi V, Infantes-Molina A, Ibupoto ZH. An advanced PdNPs@MoS 2 nanocomposite for efficient oxygen evolution reaction in alkaline media. RSC Adv 2023; 13:32413-32423. [PMID: 37928849 PMCID: PMC10623383 DOI: 10.1039/d3ra04738e] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2023] [Accepted: 10/23/2023] [Indexed: 11/07/2023] Open
Abstract
In response to the increasing availability of hydrogen energy and renewable energy sources, molybdenum disulfide (MoS2)-based electrocatalysts are becoming increasingly important for efficient electrochemical water splitting. This study involves the incorporation of palladium nanoparticles (PdNPs) into hydrothermally grown MoS2via a UV light assisted process to afford PdNPs@MoS2 as an alternative electrocatalyst for efficient energy storage and conversion. Various analytical techniques, including scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), and energy dispersive spectroscopy (EDS), were used to investigate the morphology, crystal quality, and chemical composition of the samples. Although PdNPs did not alter the MoS2 morphology, oxygen evolution reaction (OER) activity was driven at considerable overpotential. When electrochemical water splitting was performed in 1.0 M KOH aqueous solution with PdNPs@MoS2 (sample-2), an overpotential of 253 mV was observed. Furthermore, OER performance was highly favorable through rapid reaction kinetics and a low Tafel slope of 59 mV dec-1, as well as high durability and stability. In accordance with the electrochemical results, sample-2 showed also a lower charge transfer resistance, which again provided evidence of OER activity. The enhanced OER activity was attributed to a number of factors, including structural, surface chemical compositions, and synergistic effects between MoS2 and PdNPs.
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Affiliation(s)
- Umair Aftab
- Department of Metallurgy and Materials Engineering, Mehran University of Engineering and Technology 76080 Jamshoro Pakistan
| | - Muhammad Yameen Solangi
- Department of Metallurgy and Materials Engineering, Mehran University of Engineering and Technology 76080 Jamshoro Pakistan
| | - Aneela Tahira
- Institute of Chemistry, Shah Abdul Latif University Khairpur Mirs Sindh Pakistan
| | - Abdul Hanan
- Key Laboratory of Superlight Material and Surface Technology, Ministry of Education, College of Materials Science and Chemical Engineering, Harbin Engineering University 150001 Harbin PR China
| | - Muhammad Ishaq Abro
- Department of Metallurgy and Materials Engineering, Mehran University of Engineering and Technology 76080 Jamshoro Pakistan
| | - Amal Karsy
- Nanotechnology Research Centre (NTRC), The British University in Egypt (BUE) Cairo Egypt
| | - Elmuez Dawi
- Nonlinear Dynamics Research Center (NDRC), Ajman University Ajman P.O. Box 346 United Arab Emirates
| | - Muhammad Ali Bhatti
- Institute of Environmental Sciences, University of Sindh Jamshoro Jamshoro 76080 Sindh Pakistan
| | - Riyadh H Alshammari
- Department of Chemistry, College of Science, King Saud University Riyadh 11451 Saudi Arabia
| | - Ayman Nafady
- Department of Chemistry, College of Science, King Saud University Riyadh 11451 Saudi Arabia
| | | | - Raffaello Mazzaro
- CNR IMM Via Piero Gobetti 101 40129 Bologna Italy
- Department of Physics and Astronomy, University of Bologna Via Berti Pichat 6/2 40127 Bologna Italy
| | | | - Antonia Infantes-Molina
- Department of Inorganic Chemistry, Crystallography and Mineralogy, (Unidad Asociada al ICP-CSIC), Faculty of Sciences, University of Malaga Campus de Teatinos 29071 Malaga Spain
| | - Zafar Hussain Ibupoto
- Dr. M. A. Kazi Institute of Chemistry University of Sindh Jamshoro 76080 Sindh Pakistan
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Solangi AG, Tahira A, Waryani B, Chang AS, Pirzada T, Nafady A, Dawi EA, Saleem LMA, Padervand M, Haj Ismail AAK, Lv K, Vigolo B, Ibupoto ZH. Green-Mediated Synthesis of NiCo 2O 4 Nanostructures Using Radish White Peel Extract for the Sensitive and Selective Enzyme-Free Detection of Uric Acid. Biosensors (Basel) 2023; 13:780. [PMID: 37622866 PMCID: PMC10452471 DOI: 10.3390/bios13080780] [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] [Subscribe] [Scholar Register] [Received: 06/27/2023] [Revised: 07/25/2023] [Accepted: 07/30/2023] [Indexed: 08/26/2023]
Abstract
The ability to measure uric acid (UA) non-enzymatically in human blood has been demonstrated through the use of a simple and efficient electrochemical method. A phytochemical extract from radish white peel extract improved the electrocatalytic performance of nickel-cobalt bimetallic oxide (NiCo2O4) during a hydrothermal process through abundant surface holes of oxides, an alteration of morphology, an excellent crystal quality, and increased Co(III) and Ni(II) chemical states. The surface structure, morphology, crystalline quality, and chemical composition were determined using a variety of analytical techniques, including powder X-ray diffraction (XRD), scanning electron microscopy (SEM), high-resolution transmission electron microscopy (HR-TEM), and X-ray photoelectron spectroscopy (XPS). The electrochemical characterization by CV revealed a linear range of UA from 0.1 mM to 8 mM, with a detection limit of 0.005 mM and a limit of quantification (LOQ) of 0.008 mM. A study of the sensitivity of NiCo2O4 nanostructures modified on the surface to UA detection with amperometry has revealed a linear range from 0.1 mM to 4 mM for detection. High stability, repeatability, and selectivity were associated with the enhanced electrochemical performance of non-enzymatic UA sensing. A significant contribution to the full outperforming sensing characterization can be attributed to the tailoring of surface properties of NiCo2O4 nanostructures. EIS analysis revealed a low charge-transfer resistance of 114,970 Ohms that offered NiCo2O4 nanostructures prepared with 5 mL of radish white peel extract, confirming an enhanced performance of the presented non-enzymatic UA sensor. As well as testing the practicality of the UA sensor, blood samples from human beings were also tested for UA. Due to its high sensitivity, stability, selectivity, repeatability, and simplicity, the developed non-enzymatic UA sensor is ideal for monitoring UA for a wide range of concentrations in biological matrixes.
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Affiliation(s)
- Abdul Ghaffar Solangi
- Institute of Chemistry, Shah Abdul Latif University Khairpur Mirs, Khairpur Mirs 66111, Pakistan; (A.G.S.); (A.T.); (T.P.)
| | - Aneela Tahira
- Institute of Chemistry, Shah Abdul Latif University Khairpur Mirs, Khairpur Mirs 66111, Pakistan; (A.G.S.); (A.T.); (T.P.)
| | - Baradi Waryani
- Department of Fresh Water Biology and Fisheries, University of Sindh, Jamshoro 76080, Pakistan;
| | | | - Tajnees Pirzada
- Institute of Chemistry, Shah Abdul Latif University Khairpur Mirs, Khairpur Mirs 66111, Pakistan; (A.G.S.); (A.T.); (T.P.)
| | - Ayman Nafady
- Department of Chemistry, College of Science, King Saud University, Riyadh 11451, Saudi Arabia;
| | - Elmuez A. Dawi
- Nonlinear Dynamics Research Centre (NDRC), Ajman University, Ajman P.O. Box 346, United Arab Emirates; (E.A.D.); (A.A.K.H.I.)
| | - Lama M. A. Saleem
- Biomolecular Science, Earth and Life Science, Amsterdam University, 1081 HV Amsterdam, The Netherlands;
| | - Mohsen Padervand
- Department of Chemistry, Faculty of Science, University of Maragheh, Maragheh P.O. Box. 55181-83111, Iran;
| | - Abd Al Karim Haj Ismail
- Nonlinear Dynamics Research Centre (NDRC), Ajman University, Ajman P.O. Box 346, United Arab Emirates; (E.A.D.); (A.A.K.H.I.)
| | - Kangle Lv
- College of Resource and Environment, South-Central Minzu University, Wuhan 430074, China;
| | - Brigitte Vigolo
- Institut Jean Lamour, Université de Lorraine, CNRS, IJL, F-54000 Nancy, France;
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Kumar S, Tahira A, Bhatti AL, Bhatti MA, Mari RH, Shaikh NM, Solangi MY, Nafady A, Emo M, Vigolo B, Infantes-Molina A, Vomiero A, Ibupoto ZH. Transforming NiCo 2O 4 nanorods into nanoparticles using citrus lemon juice enhancing electrochemical properties for asymmetric supercapacitor and water oxidation. RSC Adv 2023; 13:18614-18626. [PMID: 37346947 PMCID: PMC10280130 DOI: 10.1039/d3ra02438e] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2023] [Accepted: 05/17/2023] [Indexed: 06/23/2023] Open
Abstract
Recently, the nanostructured nickel-cobalt bimetallic oxide (NiCo2O4) material with high electrochemical activity has received intensive attention. Beside this, the biomass assisted synthesis of NiCo2O4 is gaining popularity due to its advantageous features such as being low cost, simplicity, minimal use of toxic chemicals, and environment-friendly and ecofriendly nature. The electrochemical activity of spinel NiCo2O4 is associated with its mixed metal oxidation states. Therefore, much attention has been paid to the crystal quality, morphology and tunable surface chemistry of NiCo2O4 nanostructures. In this study, we have used citrus lemon juice consisting of a variety of chemical compounds having the properties of a stabilizing agent, capping agent and chelating agent. Moreover, the presence of several acidic chemical compounds in citrus lemon juice changed the pH of the growth solution and consequently we observed surface modified and structural changes that were found to be very effective for the development of energy conversion and energy storage systems. These naturally occurring compounds in citrus lemon juice played a dynamic role in transforming the nanorod morphology of NiCo2O4 into small and well-packed nanoparticles. Hence, the prepared NiCo2O4 nanostructures exhibited a new surface-oriented nanoparticle morphology, high concentration of defects on the surface (especially oxygen vacancies), sufficient ionic diffusion and reaction of electrolytic ions, enhanced electrical conductivity, and favorable reaction kinetics at the interface. The electrocatalytic properties of the NiCo2O4 nanostructures were studied in oxygen evolution reaction (OER) at a low overpotential of 250 mV for 10 mA cm-2, Tafel slope of 98 mV dec-1, and durability of 40 h. Moreover, an asymmetric supercapacitor was produced and the obtained results indicated a high specific capacitance of (Cs) of 1519.19 F g-1, and energy density of 33.08 W h kg-1 at 0.8 A g-1. The enhanced electrochemical performance could be attributed to the favorable structural changes, surface modification, and surface crystal facet exposure due to the use of citrus lemon juice. The proposed method of transformation of nanorod to nanoparticles could be used for the design of a new generation of efficient electrocatalyst materials for energy storage and conversion uses.
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Affiliation(s)
- Shusheel Kumar
- Institute of Physics, University of Sindh Jamshoro 76080 Sindh Pakistan
| | - Aneela Tahira
- Institute of Chemistry, Shah Abdul Latif University Khairpur Mirs Sindh Pakistan
| | | | - Muhammad Ali Bhatti
- Institute of Environmental Sciences, University of Sindh Jamshoro 76080 Sindh Pakistan
| | - Riaz Hussain Mari
- Institute of Physics, University of Sindh Jamshoro 76080 Sindh Pakistan
| | | | | | - Ayman Nafady
- Chemistry Department, College of Science, King Saud University Riyadh 11451 Saudi Arabia
| | - Mélanie Emo
- Université de Lorraine, CNRS, IJL F-54000 Nancy France
| | | | - Antonia Infantes-Molina
- Department of Inorganic Chemistry, Crystallography and Mineralogy, Unidad Asociada al ICP-CSIC, Faculty of Sciences, University of Malaga, Campus de Teatinos 29071 Malaga Spain
| | - Alberto Vomiero
- Department of Engineering Sciences and Mathematics, Division of Material Science, Luleå University of Technology Luleå Sweden
- Department of Molecular Sciences and Nanosystems, Ca' Foscari University of Venice Venezia Mestre Italy
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Bhatti AL, Tahira A, Kumar S, Ujjan ZA, Bhatti MA, Kumar S, Aftab U, Karsy A, Nafady A, Infantes-Molina A, Ibupoto ZH. Facile synthesis of efficient Co 3O 4 nanostructures using the milky sap of Calotropis procera for oxygen evolution reactions and supercapacitor applications. RSC Adv 2023; 13:17710-17726. [PMID: 37333727 PMCID: PMC10273030 DOI: 10.1039/d3ra02555a] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2023] [Accepted: 05/27/2023] [Indexed: 06/20/2023] Open
Abstract
The preparation of Co3O4 nanostructures by a green method has been rapidly increasing owing to its promising aspects, such as facileness, atom economy, low cost, scale-up synthesis, environmental friendliness, and minimal use of hazardous chemicals. In this study, we report on the synthesis of Co3O4 nanostructures using the milky sap of Calotropis procera (CP) by a low-temperature aqueous chemical growth method. The milky sap of CP-mediated Co3O4 nanostructures were investigated for oxygen evolution reactions (OERs) and supercapacitor applications. The structure and shape characterizations were done by X-ray diffraction (XRD), scanning electron microscopy (SEM), energy-dispersive spectroscopy (EDS), and X-ray photoelectron spectroscopy (XPS) techniques. The prepared Co3O4 nanostructures showed a heterogeneous morphology consisting of nanoparticles and large micro clusters. A typical cubic phase and a spinel structure of Co3O4 nanostructures were also observed. The OER result was obtained at a low overpotential of 250 mV at 10 mA cm-2 and a low Tafel slope of 53 mV dec-1. In addition, the durability of 45 hours was also found at 20 mA cm-2. The newly prepared Co3O4 nanostructures using the milky sap of CP were also used to demonstrate a high specific capacitance of 700 F g-1 at a current density of 0.8 A g-1 and a power density of 30 W h kg-1. The enhanced electrochemical performance of Co3O4 nanostructures prepared using the milky sap of CP could be attributed to the surface oxygen vacancies, a relatively high amount of Co2+, the reduction in the optical band gap and the fast charge transfer rate. These surface, structural, and optical properties were induced by reducing, capping, and stabilizing agents from the milky sap of CP. The obtained results of OERs and supercapacitor applications strongly recommend the use of the milky sap of CP for the synthesis of diverse efficient nanostructured materials in a specific application, particularly in energy conversion and storage devices.
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Affiliation(s)
| | - Aneela Tahira
- Institute of Chemistry, Shah Abdul Latif University Khairpur Mirs Sindh Pakistan
| | - Shusheel Kumar
- Institute of Physics, University of Sindh Jamshoro 76080 Sindh Pakistan
| | | | - Muhammad Ali Bhatti
- Centre for Environmental Sciences, University of Sindh Jamshoro 76080 Sindh Pakistan
| | - Sooraj Kumar
- Department of Chemical Engineering, Mehran University of Engineering and Technology 7680 Jamshoro Sindh Pakistan
| | - Umair Aftab
- Department of Metallurgy and Materials, Mehran University of Engineering and Technology 7680 Jamshoro Sindh Pakistan
| | - Amal Karsy
- Nanotechnology Research Centre (NTRC), The British University in Egypt (BUE) Cairo Egypt
| | - Ayman Nafady
- Chemistry Department, College of Science, King Saud University Riyadh 11451 Saudi Arabia
| | - Antonia Infantes-Molina
- Department of Inorganic Chemistry, Crystallography and Mineralogy, Unidad Asociada al ICP-CSIC, Faculty of Sciences, University of Malaga, Campus de Teatinos 29071 Malaga Spain
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Bhatti MA, Dawi E, Tahira A, Almani KF, Medany SS, Nafady A, Solangi ZA, Aftab U, Ibhupoto ZH. Highly Active Carbon Material Derived from Carica papaya Fruit Juice: Access to Efficient Photocatalytic Degradation of Methylene Blue in Aqueous Solution under the Illumination of Ultraviolet Light. Catalysts 2023; 13:886. [DOI: 10.3390/catal13050886] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/11/2023] Open
Abstract
Herein, we describe a cost-effective, efficient, sustainable, and environmentally friendly pyrolytic method for the synthesis of highly active carbon materials from Carica papaya fruit juice for the photodegradation of various pollutants, such as methylene blue (MB), in aqueous solutions using ultraviolet (UV) light. Various analytical techniques were used to examine the morphology, crystal quality, functional group chemistry, particle size distribution, and optical properties of the materials. For evaluating the performance of the newly prepared carbon material, various photocatalyst parameters were investigated, including initial dye concentration, catalyst dose, pH of dye solution, cyclic stability, and scavenger studies. The obtained findings attest that the optimal degradation efficiency of carbon material for high MB concentrations (2.3 × 10−5 M) is around 98.08%, whereas at low concentrations of MB (1.5 × 10−5 M) it reaches 99.67%. Degradation kinetics indicate that MB degrades in a first-order manner. Importantly, as the pH of the dye solution was adjusted to ~11, the degradation rate increased significantly. The scavenger study indicated that hydroxyl radicals were the predominant species involved in the degradation of MB. In addition, active surface site exposure and charge transfer were strongly associated with efficient MB degradation. On the basis of its performance, this newly developed carbon material may prove to be an excellent alternative and promising photocatalyst for wastewater treatment. Furthermore, the synthetic approach used to produce carbon material from Carica papaya fruit juice may prove useful for the development of a new generation of photoactive materials for environmentally friendly applications, as well as for the production of hydrogen from solar energy.
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Affiliation(s)
- Muhammad Ali Bhatti
- Centre for Environmental Sciences, University of Sindh Jamshoro, Jamshoro 76080, Pakistan
| | - Elmuez Dawi
- Nonlinear Dynamics Research Centre (NDRC), Ajman University, Ajman P.O. Box 346, United Arab Emirates
| | - Aneela Tahira
- Institute of Chemistry, Shah Abdul Latif University, Khairpur Mirs 66020, Pakistan
| | - Khalida Faryal Almani
- Centre for Environmental Sciences, University of Sindh Jamshoro, Jamshoro 76080, Pakistan
| | - Shymaa S. Medany
- Department of Chemistry, Faculty of Science, Cairo University, Cairo 12613, Egypt
| | - Ayman Nafady
- Department of Chemistry, College of Science, King Saud University, Riyadh 11451, Saudi Arabia
| | - Zulifqar Ali Solangi
- Department of Chemical Engineering, Mehran University of Engineering and Technology, Jamshoro 76080, Pakistan
| | - Umair Aftab
- Department of Metallurgy and Materials, Mehran University of Engineering and Technology, Jamshoro 76080, Pakistan
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Mustafa E, Dawi EA, Ibupoto ZH, Ibrahim AMM, Elsukova A, Liu X, Tahira A, Adam RE, Willander M, Nur O. Efficient CuO/Ag 2WO 4 photoelectrodes for photoelectrochemical water splitting using solar visible radiation. RSC Adv 2023; 13:11297-11310. [PMID: 37057263 PMCID: PMC10088074 DOI: 10.1039/d3ra00867c] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2023] [Accepted: 04/03/2023] [Indexed: 04/15/2023] Open
Abstract
Water splitting energy production relies heavily on the development of high-performance photoelectrochemical cells (PECs). Among the most highly regarded semiconductor materials, cupric oxide (CuO) is an excellent photocathode material. Pristine CuO does not perform well as a photocathode due to its tendency to recombine electrons and holes rapidly. Photocathodes with high efficiency can be produced by developing CuO-based composite systems. The aim of our research is to develop an Ag2WO4/CuO composite by incorporating silver tungstate (Ag2WO4) nanoparticles onto hydrothermally grown CuO nanoleaves (NLs) by successive ionic layer adsorption and reaction (SILAR). To prepare CuO/Ag2WO4 composites, SILAR was used in conjunction with different Ag2WO4 nanoparticle deposition cycles. Physicochemical characterization reveals well-defined nanoleaves morphologies with tailored surface compositions. Composite CuO/Ag2WO4 crystal structures are governed by the monoclinic phase of CuO and the hexagonal phase of Ag2WO4. It has been demonstrated that the CuO/Ag2WO4 composite has outstanding performance in the PEC water splitting process when used with five cycles. In the CuO/Ag2WO4 photocathode, water splitting activity is observed at low overpotential and high photocurrent density, indicating that the reaction takes place at low energy barriers. Several factors contribute to PEC performance in composites. These factors include the high density of surface active sites, the high charge separation rate, the presence of favourable surface defects, and the synergy of CuO and Ag2WO4 photoreaction. By using SILAR, silver tungstate can be deposited onto semiconducting materials with strong visible absorption, enabling the development of energy-efficient photocathodes.
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Affiliation(s)
- E Mustafa
- Department of Sciences and Technology, Linköping University, Campus Norrköping SE-601 74 Norrköping Sweden
| | - E A Dawi
- Nonlinear Dynamics Research Centre (NDRC), Ajman University P. O. Box 346 United Arab Emirates
| | - Z H Ibupoto
- Institute of Chemistry, University of Sindh 76080 Jamshoro Pakistan
| | - A M M Ibrahim
- Department of Pharmaceutical Chemistry, Jazan University P. O. Box 346 Kingdom of Saudi Arabia
| | - A Elsukova
- Department of Physics, Chemistry and Biology, Linköping University SE-58183 Linköping Sweden
| | - X Liu
- Department of Sciences and Technology, Linköping University, Campus Norrköping SE-601 74 Norrköping Sweden
| | - A Tahira
- Institute of Chemistry, Shah Abdul Latif University Khairpur Mirs 66020 Sindh Pakistan
| | - R E Adam
- Department of Sciences and Technology, Linköping University, Campus Norrköping SE-601 74 Norrköping Sweden
| | - M Willander
- Department of Sciences and Technology, Linköping University, Campus Norrköping SE-601 74 Norrköping Sweden
| | - O Nur
- Department of Sciences and Technology, Linköping University, Campus Norrköping SE-601 74 Norrköping Sweden
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Mangrio S, Tahira A, Chang AS, Mahar IA, Markhand M, Shah AA, Medany SS, Nafady A, Dawi EA, Saleem LMA, Mustafa EM, Vigolo B, Ibupoto ZH. Advanced Urea Precursors Driven NiCo 2O 4 Nanostructures Based Non-Enzymatic Urea Sensor for Milk and Urine Real Sample Applications. Biosensors (Basel) 2023; 13:bios13040444. [PMID: 37185519 PMCID: PMC10135918 DOI: 10.3390/bios13040444] [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] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/05/2023] [Revised: 03/22/2023] [Accepted: 03/29/2023] [Indexed: 05/17/2023]
Abstract
The electrochemical performance of NiCo2O4 with urea precursors was evaluated in order to develop a non-enzymatic urea sensor. In this study, NiCo2O4 nanostructures were synthesized hydrothermally at different concentrations of urea and characterized using scanning electron microscopy and X-ray diffraction. Nanostructures of NiCo2O4 exhibit a nanorod-like morphology and a cubic phase crystal structure. Urea can be detected with high sensitivity through NiCo2O4 nanostructures driven by urea precursors under alkaline conditions. A low limit of detection of 0.05 and an analytical range of 0.1 mM to 10 mM urea are provided. The concentration of 006 mM was determined by cyclic voltammetry. Chronoamperometry was used to determine the linear range in the range of 0.1 mM to 8 mM. Several analytical parameters were assessed, including selectivity, stability, and repeatability. NiCo2O4 nanostructures can also be used to detect urea in various biological samples in a practical manner.
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Affiliation(s)
- Sanjha Mangrio
- Dr. M.A. Kazi Institute of Chemistry, University of Sindh, Jamshoro 76080, Pakistan
| | - Aneela Tahira
- Institute of Chemistry, Shah Abdul Latif University, Khairpur Mirs 66111, Pakistan
| | - Abdul Sattar Chang
- Dr. M.A. Kazi Institute of Chemistry, University of Sindh, Jamshoro 76080, Pakistan
| | - Ihsan Ali Mahar
- Dr. M.A. Kazi Institute of Chemistry, University of Sindh, Jamshoro 76080, Pakistan
| | - Mehnaz Markhand
- Dr. M.A. Kazi Institute of Chemistry, University of Sindh, Jamshoro 76080, Pakistan
| | - Aqeel Ahmed Shah
- Department of metalluargy and Materials, NED University of Engineering and Technology, Karachi 75270, Pakistan
| | - Shymaa S Medany
- Department of Chemistry, Faculty of Science, Cairo University, Giza 12613, Egypt
| | - Ayman Nafady
- Department of Chemistry, College of Science, King Saud University, Riyadh 11451, Saudi Arabia
| | - Elmuez A Dawi
- Nonlinear Dynamics Research Centre (NDRC), Ajman University, Ajman P.O. Box 346, United Arab Emirates
| | - Lama M A Saleem
- Biomolecular Science, Earth and Life Science, Amsterdam University, 1081 HV Amsterdam, The Netherlands
| | - E M Mustafa
- Department of Sciences and Technology, Linköping University, SE-601 74 Norrköping, Sweden
| | - Brigitte Vigolo
- The Institut Jean Lamour (IJL), Université de Lorraine, CNRS, F-54000 Nancy, France
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Jakhrani MA, Bhatti MA, Tahira A, Shah AA, Dawi EA, Vigolo B, Nafady A, Saleem LM, Haj Ismail AAK, Ibupoto ZH. Biogenic Preparation of ZnO Nanostructures Using Leafy Spinach Extract for High-Performance Photodegradation of Methylene Blue under the Illumination of Natural Sunlight. Molecules 2023; 28:molecules28062773. [PMID: 36985746 PMCID: PMC10054875 DOI: 10.3390/molecules28062773] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2023] [Revised: 03/08/2023] [Accepted: 03/15/2023] [Indexed: 03/22/2023] Open
Abstract
To cope with environmental pollution caused by toxic emissions into water streams, high-performance photocatalysts based on ZnO semiconductor materials are urgently needed. In this study, ZnO nanostructures are synthesized using leafy spinach extract using a biogenic approach. By using phytochemicals contained in spinach, ZnO nanorods are transformed into large clusters assembled with nanosheets with visible porous structures. Through X-ray diffraction, it has been demonstrated that leafy spinach extract prepared with ZnO is hexagonal in structure. Surface properties of ZnO were altered by using 10 mL, 20 mL, 30 mL, and 40 mL quantities of leafy spinach extract. The size of ZnO crystallites is typically 14 nanometers. In the presence of sunlight, ZnO nanostructures mineralized methylene blue. Studies investigated photocatalyst doses, dye concentrations, pH effects on dye solutions, and scavengers. The ZnO nanostructures prepared with 40 mL of leafy spinach extract outperformed the degradation efficiency of 99.9% for the MB since hydroxyl radicals were primarily responsible for degradation. During degradation, first-order kinetics were observed. Leafy spinach extract could be used to develop novel photocatalysts for the production of solar hydrogen and environmental hydrogen.
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Affiliation(s)
| | - Muhammad Ali Bhatti
- Institute of Environmental Sciences, University of Sindh, Jamshoro 76080, Pakistan
| | - Aneela Tahira
- Institute of Chemistry, Shah Abdul Latif University, Khairpur Mirs 66111, Pakistan
| | - Aqeel Ahmed Shah
- Department of Metallurgy, NED University of Engineering and Technology, Karachi 75270, Pakistan
| | - Elmuez A. Dawi
- Nonlinear Dynamics Research Centre (NDRC), Ajman University, Ajman P.O. Box 346, United Arab Emirates
- Correspondence: (E.A.D.); (Z.H.I.)
| | - Brigitte Vigolo
- Institute Jean Lamour, Université de Lorraine, CNRS, Institut Jean Lamour (IJL), F-54000 Nancy, France
| | - Ayman Nafady
- Department of Chemistry, College of Science, King Saud University, Riyadh 11451, Saudi Arabia
| | - Lama M. Saleem
- Biomolecular Science, Earth and Life Science, Amsterdam University, Kruislaan 404, 1098 SM Amsterdam, The Netherlands
| | - Abd Al Karim Haj Ismail
- Nonlinear Dynamics Research Centre (NDRC), Ajman University, Ajman P.O. Box 346, United Arab Emirates
| | - Zafar Hussain Ibupoto
- Institute of Chemistry, University of Sindh, Jamshoro 76080, Pakistan
- Correspondence: (E.A.D.); (Z.H.I.)
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10
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Naz I, Tahira A, Shah AA, Bhatti MA, Mahar IA, Markhand MP, Mastoi GM, Nafady A, Medany SS, Dawi EA, Saleem LM, Vigolo B, Ibupoto ZH. Green Synthesis of NiO Nanoflakes Using Bitter Gourd Peel, and Their Electrochemical Urea Sensing Application. Micromachines (Basel) 2023; 14:677. [PMID: 36985084 PMCID: PMC10053069 DOI: 10.3390/mi14030677] [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] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/08/2023] [Revised: 03/13/2023] [Accepted: 03/16/2023] [Indexed: 06/18/2023]
Abstract
To determine urea accurately in clinical samples, food samples, dairy products, and agricultural samples, a new analytical method is required, and non-enzymatic methods are preferred due to their low cost and ease of use. In this study, bitter gourd peel biomass waste is utilized to modify and structurally transform nickel oxide (NiO) nanostructures during the low-temperature aqueous chemical growth method. As a result of the high concentration of phytochemicals, the surface was highly sensitive to urea oxidation under alkaline conditions of 0.1 M NaOH. We investigated the structure and shape of NiO nanostructures using powder X-ray diffraction (XRD) and scanning electron microscopy (SEM). In spite of their flake-like morphology and excellent crystal quality, NiO nanostructures exhibited cubic phases. An investigation of the effects of bitter gourd juice demonstrated that a large volume of juice produced thin flakes measuring 100 to 200 nanometers in diameter. We are able to detect urea concentrations between 1-9 mM with a detection limit of 0.02 mM using our urea sensor. Additionally, the stability, reproducibility, repeatability, and selectivity of the sensor were examined. A variety of real samples, including milk, blood, urine, wheat flour, and curd, were used to test the non-enzymatic urea sensors. These real samples demonstrated the potential of the electrode device for measuring urea in a routine manner. It is noteworthy that bitter gourd contains phytochemicals that are capable of altering surfaces and activating catalytic reactions. In this way, new materials can be developed for a wide range of applications, including biomedicine, energy production, and environmental protection.
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Affiliation(s)
- Irum Naz
- Dr. M.A Kazi Institute of Chemistry, University of Sindh, Jamshoro 76080, Pakistan; (I.N.); (A.T.); (G.M.M.)
| | - Aneela Tahira
- Dr. M.A Kazi Institute of Chemistry, University of Sindh, Jamshoro 76080, Pakistan; (I.N.); (A.T.); (G.M.M.)
- Institute of Chemistry, Shah Abdul Latif University, Khairpur Mirs 66111, Pakistan;
| | - Aqeel Ahmed Shah
- Wet Chemistry Laboratory, Department of Metallurgical Engineering, NED University of Engineering and Technology, University Road, Karachi 75270, Pakistan;
| | - Muhammad Ali Bhatti
- Centre for Environmental Sciences, University of Sindh, Jamshoro 76080, Pakistan
| | - Ihsan Ali Mahar
- Dr. M.A Kazi Institute of Chemistry, University of Sindh, Jamshoro 76080, Pakistan; (I.N.); (A.T.); (G.M.M.)
| | | | - Ghulam Murtaza Mastoi
- Dr. M.A Kazi Institute of Chemistry, University of Sindh, Jamshoro 76080, Pakistan; (I.N.); (A.T.); (G.M.M.)
| | - Ayman Nafady
- Department of Chemistry, College of Science, King Saud University, Riyadh 11451, Saudi Arabia;
| | - Shymaa S. Medany
- Department of Chemistry, Faculty of Science, Cairo University, Cairo 12613, Egypt;
| | - Elmuez A. Dawi
- Nonlinear Dynamics Research Centre (NDRC), Ajman University, Ajman P.O. Box 346, United Arab Emirates
| | - Lama M. Saleem
- Biomolecular Science, Earth and Life Science, Amsterdam University, De Boelelaan 1 105, 1081 HV Amsterdam, The Netherlands;
| | - Brigitte Vigolo
- Institut Jean Lamour, CNRS-Université de Lorraine, F-54000 Nancy, France;
| | - Zafar Hussain Ibupoto
- Dr. M.A Kazi Institute of Chemistry, University of Sindh, Jamshoro 76080, Pakistan; (I.N.); (A.T.); (G.M.M.)
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11
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Chang AS, Tahira A, Chang F, Solangi AG, Bhatti MA, Vigolo B, Nafady A, Ibupoto ZH. Highly Heterogeneous Morphology of Cobalt Oxide Nanostructures for the Development of Sensitive and Selective Ascorbic Acid Non-Enzymatic Sensor. Biosensors (Basel) 2023; 13:bios13010147. [PMID: 36671982 PMCID: PMC9856399 DOI: 10.3390/bios13010147] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/29/2022] [Revised: 01/08/2023] [Accepted: 01/13/2023] [Indexed: 05/20/2023]
Abstract
The surface tailored metal oxide nanostructures for the development of non-enzymatic sensors are highly demanded, but it is a big task due to the wide range of complexities during the growth process. The presented study focused on the surface modification of the heterogeneous morphology of cobalt oxide (Co3O4) prepared by the hydrothermal method. Further surface modification was conducted with the use of sodium citrate as a reducing and surface modifying agent for the Co3O4 nanostructures through the high density of oxygenated terminal groups from the citrate ions. The citrate ions enabled a significant surface modification of the Co3O4 nanostructures, which further improved the electrochemical properties of the Co3O4 material toward the design of the non-enzymatic ascorbic acid sensor in a phosphate buffer solution of pH 7.4. The morphology and crystal arrays of the Co3O4 nanostructures were studied by scanning electron microscopy (SEM) and powder X-ray diffraction (XRD) techniques. These physical characterizations showed the highly tailored surface features of Co3O4 nanostructures and a significant impact on the crystal properties. The electrochemical activity of Co3O4 was studied by chronoamperometry, linear sweep voltammetry, and cyclic voltammetry (CV) for the detection of ascorbic acid. The linear range of the proposed sensor was measured from 0.5 mM to 6.5 mM and a low limit of detection of 0.001 mM was also estimated. The presented Co3O4 nanostructures exhibited significant surface roughness and surface area, consequently playing a vital role toward the selective, sensitive, and stable detection of ascorbic acid. The use of a low cost surface modifying agent such as sodium citrate could be of great interest for the surface roughness and high surface area of nanostructured materials for the improved electrochemical properties for the biomedical, energy storage, and conversion systems.
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Affiliation(s)
- Abdul Sattar Chang
- Dr. M. A. Kazi Institute of Chemistry, University of Sindh Jamshoro, Jamshoro 76080, Sindh, Pakistan
| | - Aneela Tahira
- Institute of Chemistry, Shah Abdul Latif University of Khairpur Mirs, Khairpur Mirs 66111, Sindh, Pakistan
| | - Fouzia Chang
- National Center of Excellent in Analytical Chemistry, University of Sindh Jamshoro, Jamshoro 76080, Sindh, Pakistan
| | - Abdul Ghaffar Solangi
- Institute of Chemistry, Shah Abdul Latif University of Khairpur Mirs, Khairpur Mirs 66111, Sindh, Pakistan
| | - Muhammad Ali Bhatti
- Institute of Environmental Sciences, University of Sindh Jamshoro, Jamshoro 76080, Sindh, Pakistan
| | - Brigitte Vigolo
- Institut Jean Lamour (CNRS, IJL), Université de Lorraine, F-54000 Nancy, France
| | - Ayman Nafady
- Department of Chemistry, College of Science, King Saud University, Riyadh 11451, Saudi Arabia
- Correspondence: (A.N.); (Z.H.I.)
| | - Zafar Hussain Ibupoto
- Dr. M. A. Kazi Institute of Chemistry, University of Sindh Jamshoro, Jamshoro 76080, Sindh, Pakistan
- Correspondence: (A.N.); (Z.H.I.)
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12
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Hanan A, Solangi MY, Jaleel laghari A, Shah AA, Aftab U, Ibupoto ZA, Abro MI, Lakhan MN, Soomro IA, Dawi EA, Al Karim Haj Ismail A, Mustafa E, Vigolo B, Tahira A, Ibupoto ZH. PdO@CoSe 2 composites: efficient electrocatalysts for water oxidation in alkaline media. RSC Adv 2022; 13:743-755. [PMID: 36683771 PMCID: PMC9809149 DOI: 10.1039/d2ra07340d] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [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: 11/18/2022] [Accepted: 12/16/2022] [Indexed: 01/04/2023] Open
Abstract
In this study, we have prepared cobalt selenide (CoSe2) due to its useful aspects from a catalysis point of view such as abundant active sites from Se edges, and significant stability in alkaline conditions. CoSe2, however, has yet to prove its functionality, so we doped palladium oxide (PdO) onto CoSe2 nanostructures using ultraviolet (UV) light, resulting in an efficient and stable water oxidation composite. The crystal arrays, morphology, and chemical composition of the surface were studied using a variety of characterization techniques, including X-ray diffraction (XRD), scanning electron microscopy (SEM), high resolution transmission electron microscopy (HRTEM), X-ray photoelectron spectroscopy (XPS), and Fourier transform infrared (FTIR) spectroscopy. It was also demonstrated that the composite systems were heterogeneous in their morphology, undergoing a shift in their diffraction patterns, suffering from a variety of metal oxidation states and surface defects. The water oxidation was verified by a low overpotential of 260 mV at a current density of 20 mA cm-2 with a Tafel Slope value of 57 mV dec-1. The presence of multi metal oxidation states, rich surface edges of Se and favorable charge transport played a leading role towards water oxidation with a low energy demand. Furthermore, 48 h of durability is associated with the composite system. With the use of PdO and CoSe2, new, low efficiency, simple electrocatalysts for water catalysis have been developed, enabling the development of practical energy conversion and storage systems. This is an excellent alternative approach for fostering growth in the field.
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Affiliation(s)
- Abdul Hanan
- Key Laboratory of Superlight Material and Surface Technology, Ministry of Education, College of Materials Science and Chemical Engineering, Harbin Engineering University150001HarbinPR China
| | - Muhammad Yameen Solangi
- Department of Metallurgy and Materials Engineering, Mehran University of Engineering and Technology76080JamshoroPakistan
| | - Abdul Jaleel laghari
- Department of Metallurgy and Materials Engineering, Mehran University of Engineering and Technology76080JamshoroPakistan
| | - Aqeel Ahmed Shah
- NED University of Engineering and Technology75270KarachiPakistan
| | - Umair Aftab
- Department of Metallurgy and Materials Engineering, Mehran University of Engineering and Technology76080JamshoroPakistan
| | - Zahoor Ahmed Ibupoto
- Faculty of Agricultural Engineering and Technology, PMAS-Arid Agriculture UniversityRawalpindiPakistan
| | - Muhammad Ishaque Abro
- Department of Metallurgy and Materials Engineering, Mehran University of Engineering and Technology76080JamshoroPakistan
| | - Muhammad Nazim Lakhan
- Key Laboratory of Superlight Material and Surface Technology, Ministry of Education, College of Materials Science and Chemical Engineering, Harbin Engineering University150001HarbinPR China
| | - Irfan Ali Soomro
- Institute of Computational Chemistry, College of Chemistry, Beijing University of Chemical Technology100029BeijingPR China
| | - Elmuez A. Dawi
- Nonlinear Dynamics Research Centre (NDRC), Ajman UniversityP.O. Box 346United Arab Emirates
| | | | - Elfatih Mustafa
- Department of Science and Technology (ITN), Linköping University, Campus Norrköping60174 NorrköpingSweden
| | | | - Aneela Tahira
- Institute of Chemistry, Shah Abdul Latif University Khairpur MirsSindhPakistan
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Bhatti MA, Almani KF, Shah AA, Tahira A, Chana IA, Aftab U, Ibupoto MH, Mirjat AN, Aboelmaaref A, Nafady A, Vigolo B, Ibupoto ZH. Renewable and eco-friendly ZnO immobilized onto dead sea sponge floating materials with dual practical aspects for enhanced photocatalysis and disinfection applications. Nanotechnology 2022; 34:035602. [PMID: 36215879 DOI: 10.1088/1361-6528/ac98cc] [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] [Subscribe] [Scholar Register] [Received: 02/16/2022] [Accepted: 10/10/2022] [Indexed: 06/16/2023]
Abstract
In this study, we have investigated the role of natural dead sea sponge (DSS, Porifera) as a three-dimensional (3D) porous host substrate for the immobilization of nanostructured ZnO material towards the development of ZnO based floating photocatalysts for efficient removal of methylene blue (MB) dye under the illumination of sunlight. After photodegradation, the treated water after dye degradation contains several pathogens, different disinfectants or chemical reagents that are essentially used. This is not the case for DSS as it can naturally kill any pathogens during the wastewater treatment process. To explore these functions, ZnO nanosheets were incorporated onto DSS via hydrothermal protocol and the as prepared ZnO/DSS hybrid material exhibited approximately ∼100% degradation efficiency for the removal of MB. Importantly, the degradation kinetics associated with the fabricated ZnO/DSS was remarkably accelerated as evidenced by the high values of degradation reaction rate constants (3.35 × 10-2min-1). The outperformance of ZnO/DSS could be attributed to the adsorption caused by its 3D porous structure together with the high rapid oxidation of MB. Furthermore, the high charge separation of electron-hole pairs, natural porosity, and abundant catalytic sites offered by the hybrid ZnO/DSS floating photocatalyst have enabled quantitative (∼100%) degradation efficiency for MB. Finally, the excellent reusability results confirm the feasibility of using natural ZnO/DSS-based photocatalyst for practical solution of wastewater treatment and other environmental problems.
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Affiliation(s)
- Muhammad Ali Bhatti
- Institute of Environmental Sciences, University of Sindh Jamshoro, 76080, Sindh, Pakistan
| | - Khalida Faryal Almani
- Institute of Environmental Sciences, University of Sindh Jamshoro, 76080, Sindh, Pakistan
| | - Aqeel Ahmed Shah
- Department of Metallurgy, NED University of Engineering and Technology, Karachi, Pakistan
| | - Aneela Tahira
- Dr M.A Kazi Institute of Chemistry, University of Sindh Jamshoro, 76080, Sindh, Pakistan
| | - Iftikhar Ahmed Chana
- Department of Metallurgy, NED University of Engineering and Technology, Karachi, Pakistan
| | - Umair Aftab
- Mehran University of Engineering and Technology, 7680 Jamshoro, Sindh, Pakistan
| | | | - Abdul Nabi Mirjat
- Institute of Microbiology, University of Sindh Jamshoro, 76080, Sindh, Pakistan
| | - Amal Aboelmaaref
- Department of Chemistry, Faculty of Science, Helwan University, Ain Helwan, Egypt
| | - Ayman Nafady
- Department of Chemistry, College of Science, King Saud University, Riyadh 11451, Saudi Arabia
| | | | - Zafar Hussain Ibupoto
- Dr M.A Kazi Institute of Chemistry, University of Sindh Jamshoro, 76080, Sindh, Pakistan
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14
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Shaikh B, Bhatti MA, Shah AA, Tahira A, Shah AK, Usto A, Aftab U, Bukhari SI, Alshehri S, Shah Bukhari SNU, Tonezzer M, Vigolo B, Ibhupoto ZH. Mn 3O 4@ZnO Hybrid Material: An Excellent Photocatalyst for the Degradation of Synthetic Dyes including Methylene Blue, Methyl Orange and Malachite Green. Nanomaterials (Basel) 2022; 12:3754. [PMID: 36364529 PMCID: PMC9657031 DOI: 10.3390/nano12213754] [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] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/22/2022] [Revised: 10/13/2022] [Accepted: 10/20/2022] [Indexed: 06/16/2023]
Abstract
In this study, we synthesized hybrid systems based on manganese oxide@zinc oxide (Mn3O4@ZnO), using sol gel and hydrothermal methods. The hybrid materials exhibited hierarchical morphologies and structures characterized by the hexagonal phase of ZnO and the tetragonal phase of Mn3O4. The hybrid materials were tested for degradation of methylene blue (MB), methyl orange (MO), and malachite green (MG) under ultraviolet (UV) light illumination. The aim of this work was to observe the effect of various amounts of Mn3O4 in enhancing the photocatalytic properties of ZnO-based hybrid structures towards the degradation of MB, MO and MG. The ZnO photocatalyst showed better performance with an increasing amount of Mn3O4, and the degradation efficiency for the hybrid material containing the maximum amount of Mn3O4 was found to be 94.59%, 89.99%, and 97.40% for MB, MO and MG, respectively. The improvement in the performance of hybrid materials can be attributed to the high charge separation rate of electron-hole pairs, the co-catalytic role, the large number of catalytic sites, and the synergy for the production of high quantities of oxidizing radicals. The performance obtained from the various Mn3O4@ZnO hybrid materials suggest that Mn3O4 can be considered an effective co-catalyst for a wide range of photocatalytic materials such as titanium dioxide, tin oxide, and carbon-based materials, in developing practical hybrid photocatalysts for the degradation of dyes and for wastewater treatment.
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Affiliation(s)
- Benazir Shaikh
- Institute of Environmental Sciences, University of Sindh, Jamshoro 76080, Pakistan
| | - Muhammad Ali Bhatti
- Institute of Environmental Sciences, University of Sindh, Jamshoro 76080, Pakistan
| | - Aqeel Ahmed Shah
- Wet Chemistry Laboratory, Department of Metallurgical Engineering, NED University of Engineering and Technology, Karachi 75270, Pakistan
| | - Aneela Tahira
- Dr. M.A Kazi Institute of Chemistry, University of Sindh, Jamshoro 76080, Pakistan
| | - Abdul Karim Shah
- Department of Chemical Engineering, Dawood University of Engineering and Technology, Karachi 74800, Pakistan
| | - Azam Usto
- Department of Chemical Engineering, Dawood University of Engineering and Technology, Karachi 74800, Pakistan
| | - Umair Aftab
- Department of Metallurgy and Materials Engineering, Mehran University of Engineering and Technology, Jamshoro 7680, Pakistan
| | - Sarah I. Bukhari
- Department of Pharmaceutics, College of Pharmacy, King Saud University, Riyadh 11451, Saudi Arabia
| | - Sultan Alshehri
- Department of Pharmaceutics, College of Pharmacy, King Saud University, Riyadh 11451, Saudi Arabia
| | - Syed Nizam Uddin Shah Bukhari
- State Key Laboratory of Organic-Inorganic Composites, Beijing Key Laboratory of Electrochemical Process and Technology for Materials, School of Material Science, Beijing University of Chemical Technology, Beijing 100029, China
- Department of Basic Science and Humanities, Dawood University of Engineering and Technology, Karachi 74800, Pakistan
| | - Matteo Tonezzer
- IMEM-CNR, Sede di Trento-FBK, Via alla Cascata 56/C, 38123 Trento, Italy
| | - Brigitte Vigolo
- Institut Jean Lamour, Université de Lorraine, CNRS, IJL, F-54000 Nancy, France
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Bukhari SNUS, Shah AA, Bhatti MA, Tahira A, Channa IA, Shah AK, Chandio AD, Mahdi WA, Alshehri S, Ibhupoto ZH, Liu W. Psyllium-Husk-Assisted Synthesis of ZnO Microstructures with Improved Photocatalytic Properties for the Degradation of Methylene Blue (MB). Nanomaterials (Basel) 2022; 12:nano12203568. [PMID: 36296761 PMCID: PMC9609820 DOI: 10.3390/nano12203568] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/12/2022] [Revised: 10/06/2022] [Accepted: 10/08/2022] [Indexed: 05/02/2023]
Abstract
Wastewater from the textile industry is chronic and hazardous for the human body due to the presence of a variety of organic dyes; therefore, its complete treatment requires efficient, simple, and low cost technology. For this purpose, we grew ZnO microstructures in the presence of psyllium husk, and the role of psyllium husk was to modify the surface of the ZnO microstructures, create defects in the semiconducting crystal structures, and to alter the morphology of the nanostructured material. The growth process involved a hydrothermal method followed by calcination in air. Additionally, the psyllium husk, after thermal combustion, added a certain value of carbon into the ZnO nanomaterial, consequently enhancing the photocatalytic activity towards the degradation of methylene blue. We also investigated the effect of varying doses of photocatalyst on the photocatalytic properties towards the photodegradation of methylene blue in aqueous solution under the illumination of ultraviolet light. The structure and morphology of the prepared ZnO microstructures were explored by scanning electron microscopy (SEM) and powder X-ray diffraction (XRD) techniques. The degradation of methylene blue was monitored under the irradiation of ultraviolet light and in the dark. Also, the degradation of methylene blue was measured with and without photocatalyst. The photodegradation of methylene blue is highly increased using the ZnO sample prepared with psyllium husk. The photodegradation efficiency is found to be approximately 99.35% for this sample. The outperforming functionality of psyllium-husk-assisted ZnO sample is attributed to large surface area of carbon material from the psyllium husk and the synergetic effect between the incorporated carbon and ZnO itself. Based on the performance of the hybrid material, it is safe to say that psyllium husk has high potential for use where surface roughness, morphology alteration, and defects in the crystal structure are vital for the enhancing the functionality of a nanostructured material. The observed performance of ZnO in the presence of psyllium husk provides evidence for the fabrication of a low cost and efficient photocatalyst for the wastewater treatment problems.
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Affiliation(s)
- Syed Nizam Uddin Shah Bukhari
- State Key Laboratory of Organic-Inorganic Composites, Beijing Key Laboratory of Electrochemical Process and Technology for Materials, School of Material Science, Beijing University of Chemical Technology, Beijing 100029, China
- Department of Basic Science and Humanities, Dawood University of Engineering and Technology, Karachi 74800, Pakistan
| | - Aqeel Ahmed Shah
- Wet Chemistry and Thin Film Laboratory, Department of Metallurgical Engineering, NED University of Engineering and Technology, Karachi 75270, Pakistan
| | - Muhammad Ali Bhatti
- Department of Environmental Sciences, University of Sindh Jamshoro, Jamshoro 76080, Pakistan
| | - Aneela Tahira
- Dr. M.A Kazi Institute of Chemistry University of Sindh, Jamshoro 76090, Pakistan
| | - Iftikhar Ahmed Channa
- Wet Chemistry and Thin Film Laboratory, Department of Metallurgical Engineering, NED University of Engineering and Technology, Karachi 75270, Pakistan
| | - Abdul Karim Shah
- Department of Chemical Engineering, Dawood University of Engineering and Technology, Karachi 74800, Pakistan
| | - Ali Dad Chandio
- Wet Chemistry and Thin Film Laboratory, Department of Metallurgical Engineering, NED University of Engineering and Technology, Karachi 75270, Pakistan
| | - Wael A. Mahdi
- Department of Pharmaceutics, College of Pharmacy, King Saud University, Riyadh 11451, Saudi Arabia
| | - Sultan Alshehri
- Department of Pharmaceutics, College of Pharmacy, King Saud University, Riyadh 11451, Saudi Arabia
| | - Zaffar Hussain Ibhupoto
- Dr. M.A Kazi Institute of Chemistry University of Sindh, Jamshoro 76090, Pakistan
- Correspondence: (Z.H.I.); (W.L.)
| | - Wen Liu
- State Key Laboratory of Chemical Resource Engineering, Beijing Advanced Innovation Center for Soft Matter Science and Engineering, College of Chemistry, Beijing University of Chemical Technology, Beijing 100029, China
- Correspondence: (Z.H.I.); (W.L.)
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16
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Jakhrani MA, Tahira A, Bhatti MA, Shah AA, Shaikh NM, Mari RH, Vigolo B, Emo M, Albaqami MD, Nafady A, Ibupoto ZH. A green approach for the preparation of ZnO@C nanocomposite using agave americana plant extract with enhanced photodegradation. Nanotechnology 2022; 33:505202. [PMID: 36103847 DOI: 10.1088/1361-6528/ac91d8] [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] [Subscribe] [Scholar Register] [Received: 05/13/2022] [Accepted: 09/13/2022] [Indexed: 06/15/2023]
Abstract
The present study demonstrates the crucial role of agave americana extract in enhancing the optical properties of zinc oxide (ZnO) through thermal treatment method. Various analytical and surface science techniques have been used to identify the morphology, crystalline structure, chemical composition, and optical properties, including scanning electron microscopy, x-ray diffraction, high resolution transmission electron microscopy (HRTEM), x-ray spectroscopy (EDS) and UV-visible spectroscopy techniques. The physical studies revealed the transformation of ZnO nanorods into nanosheets upon addition of an optimized amount of agave americana extract, which induced large amount of amorphous carbon deposited onto ZnO nanostructures as confirmed by HRTEM analysis. The use of increasing amount of americana extract has significantly reduced the average crystallite size of ZnO nanostructures. The resultant hybrid system of C@ZnO has produced a significant effect on the ultraviolet light-assisted photodegradation of malachite green (MG) dye. The photocatalyst dose was fixed at 10 mg for each study whereas the amount of agave americana extract and MG dye concentration are varied. The functionality of hybrid system was greatly enhanced when the amount of agave americana extract increased while dye concentration kept at lower level. Ultimately, almost 100% degradation efficiency was achieved via the prepared hybrid material, revealing combined contribution from synergy, stabilization of ZnO due to excess of carbon together with the high charge separation rate. The obtained results suggest that the driving role of agave americana extract for surface modification of photocatalyst can be considered for other nanostructured photocatalysts.
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Affiliation(s)
| | - Aneela Tahira
- Dr. M.A Kazi Institute of Chemistry University of Sindh Jamshoro, 76080, Sindh, Pakistan
| | - Muhammad Ali Bhatti
- Center for Environmental Sciences University of Sindh Jamshoro, 76080, Sindh, Pakistan
| | - Aqeel Ahmed Shah
- Department of Metallurgical Engineering, NED University of Engineering and Technology, Karachi, Sindh, Pakistan
| | | | - Riaz Hussain Mari
- Institute of Physics, University of Sindh Jamshoro, 76080, Sindh, Pakistan
| | | | - Mélanie Emo
- Université de Lorraine, CNRS, IJL, F-54000 Nancy, France
| | - Munirah D Albaqami
- Department of Chemistry, College of Science, King Saud University, Riyadh 11451, Saudi Arabia
| | - Ayman Nafady
- Department of Chemistry, College of Science, King Saud University, Riyadh 11451, Saudi Arabia
| | - Zafar Hussain Ibupoto
- Dr. M.A Kazi Institute of Chemistry University of Sindh Jamshoro, 76080, Sindh, Pakistan
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17
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Bhatti MA, Gilani SJ, Shah AA, Channa IA, Almani KF, Chandio AD, Halepoto IA, Tahira A, Bin Jumah MN, Ibupoto ZH. Effective Removal of Methylene Blue by Surface Alteration of TiO 2 with Ficus Carica Leaf Extract under Visible Light. Nanomaterials (Basel) 2022; 12:nano12162766. [PMID: 36014631 PMCID: PMC9416792 DOI: 10.3390/nano12162766] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/15/2022] [Revised: 07/27/2022] [Accepted: 08/05/2022] [Indexed: 05/17/2023]
Abstract
The present study describes the use of a leaf extract from Ficus carica as a source of natural antioxidants for the surface alteration of bulk titanium dioxide (TiO2) in two steps. First, the hydro-thermal treatment of the bulk TiO2 material was carried out and followed by thermal annealing at 300 °C for 3 h in air. The role of the leaf extract of Ficus carica on the performance of the bulk TiO2 material for the removal of methylene blue (MB) was also studied. Various analytical techniques such as powder X-ray diffraction (XRD), scanning electron microscopy (SEM), and energy dispersive spectroscopy (EDS) were used to explore the crystalline structure, morphology, and composition. The bulk TiO2 material after the leaf-extract treatment exhibited mixed anatase and rutile phases, a flower-like morphology, and Ti, O, and C were its main elements. The average crystallite size was also calculated, and the obtained values for the bulk TiO2 material, 18.11 nm, and the treated bulk TiO2 material with various amounts, 5, 10, and 15 mL, of leaf extract were 16.4, 13.16, and 10.29 nm respectively. Moreover, Fourier-transform infrared spectroscopy validated the typical metal-oxygen bonds and strengthened the XRD results. The bulk TiO2 material chemically treated with Ficus carica has shown outstanding activity towards the degradation of MB under sunlight. The 15 mL of Ficus carica extract significantly enhanced the photocatalytic activity of the bulk TiO2 material towards the degradation of MB. The dye degradation efficiency was found to be 98.8%, which was experimentally proven by the Fourier Transform Infrared spectroscopoyy (FTIR) analysis. The obtained performance of the bulk TiO2 material with Ficus carica revealed excellent surface modifying properties for poorly-performing photocatalysts towards the degradation of synthetic dyes when used in their pristine form. The presented approach suggests that Ficus carica could be of great interest for tuning the surface properties of materials, either in the form of nano-size or bulk-phase in a particular application.
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Affiliation(s)
- Muhammad Ali Bhatti
- Institute of Environmental Sciences, University of Sindh Jamshoro, Jamshoro 76080, Sindh, Pakistan
| | - Sadaf Jamal Gilani
- Department of Basic Health Sciences, Preparatory Year, Princess Nourah Bint Abdulrahman University, Riyadh 11671, Saudi Arabia
| | - Aqeel Ahmed Shah
- Thin Film and Wet Chemistry Lab, Department of Metallurgical Engineering, NED University of Engineering and Technology, Karachi 75270, Sindh, Pakistan
| | - Iftikhar Ahmed Channa
- Thin Film and Wet Chemistry Lab, Department of Metallurgical Engineering, NED University of Engineering and Technology, Karachi 75270, Sindh, Pakistan
| | - Khalida Faryal Almani
- Institute of Environmental Sciences, University of Sindh Jamshoro, Jamshoro 76080, Sindh, Pakistan
| | - Ali Dad Chandio
- Thin Film and Wet Chemistry Lab, Department of Metallurgical Engineering, NED University of Engineering and Technology, Karachi 75270, Sindh, Pakistan
| | - Imran Ali Halepoto
- Institute of Physics, University of Sindh, Jamshoro 76080, Sindh, Pakistan
| | - Aneela Tahira
- Dr. M.A Kazi Institute of Chemistry, University of Sindh, Jamshoro 76080, Sindh, Pakistan
| | - May Nasser Bin Jumah
- Biology Department, College of Science, Princess Nourah Bint Abdulrahman University, Riyadh 11671, Saudi Arabia
- Environment and Biomaterial Unit, Health Sciences Research Center, Princess Nourah Bint Abdulrahman University, Riyadh 11671, Saudi Arabia
- Saudi Society for Applied Science, Princess Nourah Bint Abdulrahman University, Riyadh 11671, Saudi Arabia
| | - Zafar Hussain Ibupoto
- Dr. M.A Kazi Institute of Chemistry, University of Sindh, Jamshoro 76080, Sindh, Pakistan
- Correspondence:
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18
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Solangi AG, Pirzada T, Shah AA, Halepoto IA, Chang AS, Solangi ZA, Solangi MY, Aftab U, Tonezzer M, Tahira A, Nafady A, Medany SS, Ibupoto ZH. Phytochemicals of mustard (
Brassica Campestris
) leaves tuned the nickel‐cobalt bimetallic oxide properties for enzyme‐free sensing of glucose. J CHIN CHEM SOC-TAIP 2022. [DOI: 10.1002/jccs.202200270] [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: 11/06/2022]
Affiliation(s)
| | - Tajness Pirzada
- Institute of Chemistry Shah Abdul Latif University Khairpur Mirs Pakistan
| | - Aqeel Ahmed Shah
- Department of Metallurgical Engineering NED University of Engineering and Technology Karachi Pakistan
| | | | | | - Zulifqar Ali Solangi
- Department of Chemical Engineering Mehran University of Engineering and Technology Jamshoro Pakistan
| | - Muhammad Yameen Solangi
- Department of Metallurgy and Materials Engineering Mehran University of Engineering and Technology Jamshoro Pakistan
| | - Umair Aftab
- Department of Metallurgy and Materials Engineering Mehran University of Engineering and Technology Jamshoro Pakistan
| | - Matteo Tonezzer
- Institute of Materials for Electronics and Magnetism (IMEM), Italian‐National‐Research‐Council (CNR) Trento Italy
| | - Aneela Tahira
- Institute of Chemistry University of Sindh Jamshoro Pakistan
| | - Ayman Nafady
- Department of Chemistry, College of Science King Saud University Riyadh Saudi Arabia
| | - Shymaa S. Medany
- Department of Chemistry, Faculty of Science Cairo University Giza Egypt
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19
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Bhatti MA, Almaani KF, Shah AA, Tahira A, Chandio AD, Mugheri AQ, Bhatti AL, Waryani B, Medany SS, Nafady A, Ibupoto ZH. Low Temperature Aqueous Chemical Growth Method for the Doping of W into ZnO Nanostructures and Their Photocatalytic Role in the Degradration of Methylene Blue. J CLUST SCI 2022. [DOI: 10.1007/s10876-021-02069-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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20
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Albaqami MD, Alothman AA, Nafady A, Medany SS, Shah AA, Aftab U, Ibupoto MH, Mallah AB, Tahira A, Tonezzer M, Vigolo B, Ibupoto ZH. Utilization of polyvinyl amine hydrolysis product in enhancing the catalytic properties of Co3O4 nanowires: toward potentiometric glucose bio-sensing application. J Mater Sci: Mater Electron 2022; 33:11555-11568. [DOI: 10.1007/s10854-022-08128-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/03/2021] [Accepted: 03/18/2022] [Indexed: 07/11/2023]
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21
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Tahira A, Aftab U, Solangi MY, Gradone A, Morandi V, Medany SS, Kasry A, Infantes-Molina A, Nafady A, Ibupoto ZH. Facile deposition of palladium oxide (PdO) nanoparticles on CoNi 2S 4microstructures towards enhanced oxygen evolution reaction. Nanotechnology 2022; 33:275402. [PMID: 35354121 DOI: 10.1088/1361-6528/ac62b2] [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] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/02/2022] [Accepted: 03/30/2022] [Indexed: 06/14/2023]
Abstract
Strong demand for renewable energy resources and clean environments have inspired scientists and researchers across the globe to carry out research activities on energy provision, conversion, and storage devices. In this context, development of outperform, stable, and durable electrocatalysts has been identified as one of the major objectives for oxygen evolution reaction (OER). Herein, we offer facile approach for the deposition of few palladium oxide (PdO) nanoparticles on the cobalt-nickel bi-metallic sulphide (CoNi2S4) microstructures represented as PdO@ CoNi2S4using ultraviolet light (UV) reduction method. The morphology, crystalline structure, and chemical composition of the as-prepared PdO@ CoNi2S4composite were probed through scanning electron microscopy, powder x-ray diffraction, high resolution transmission electron microscopy, energy dispersive spectroscopy and x-ray photoelectron spectroscopy techniques. The combined physical characterization results revealed that ultraviolet light (UV) light promoted the facile deposition of PdO nanoparticles of 10 nm size onto the CoNi2S4and the fabricated PdO@ CoNi2S4composite has a remarkable activity towards OER in alkaline media. Significantly, it exhibited a low onset potential of 1.41 V versus reversible hydrogen electrode (RHE) and a low overpotential of 230 mV at 10 mA cm-2. Additionally, the fabricated PdO@ CoNi2S4composite has a marked stability of 45 h. Electrochemical impedance spectroscopy has shown that the PdO@CoNi2S4composite has a low charge transfer resistance of 86.3 Ohms, which favours the OER kinetics. The PdO@ CoNi2S4composite provided the multiple number of active sites, which favoured the enhanced OER activity. Taken together, this new class of material could be utilized in energy conversion and storage as well as sensing applications.
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Affiliation(s)
- Aneela Tahira
- Dr. M.A Kazi Institute of Chemistry University of Sindh Jamshoro, 76080, Sindh, Pakistan
| | - Umair Aftab
- Mehran University of Engineering and Technology, 76080 Jamshoro, Sindh, Pakistan
| | | | - Alessandro Gradone
- Institute for Microelectronics and Microsystems, Italian National Research Council, section of Bologna, Via Piero Gobetti 101, I-40129, Bologna, Italy
- Department of Chemistry 'G. Ciamician', Univeristy of Bologna, Via Francesco Selmi 2, I-40126, Bologna, Italy
| | - Vittorio Morandi
- Institute for Microelectronics and Microsystems, Italian National Research Council, section of Bologna, Via Piero Gobetti 101, I-40129, Bologna, Italy
| | - Shymaa S Medany
- Department of Chemistry, Faculty of Science, Cairo University, Cairo, Egypt
| | - Amal Kasry
- Nanotechnology Research Centre (NTRC), the British University in Egypt (BUE), Egypt
| | - Antonia Infantes-Molina
- Department of Inorganic Chemistry, Crystallography and Mineralogy. (Unidad Asociada al ICP-CSIC), Faculty of Sciences, University of Malaga, Campus de Teatinos, E-29071 Malaga, Spain
| | - Ayman Nafady
- Department of Chemistry, College of Science, King Saud University, PO Box 2455, Riyadh 11451, Saudi Arabia
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22
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Tahira A, Ibupoto ZH, Montecchi M, Pasquali L, Tonezzer M, Nafady A, Khalil HF, Mazzaro R, Morandi V, Vagin M, Vomiero A. Role of cobalt precursors in the synthesis of
Co
3
O
4
hierarchical nanostructures toward the development of cobalt‐based functional electrocatalysts for bifunctional water splitting in alkaline and acidic media. J CHIN CHEM SOC-TAIP 2022. [DOI: 10.1002/jccs.202200012] [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: 11/11/2022]
Affiliation(s)
- Aneela Tahira
- Dr. M. A Kazi Institute of Chemistry University of Sindh Jamshoro Pakistan
- Department of Engineering Sciences and Mathematics, Division of Material Science Luleå University of Technology Luleå Sweden
| | - Zafar Hussain Ibupoto
- Dr. M. A Kazi Institute of Chemistry University of Sindh Jamshoro Pakistan
- Department of Engineering Sciences and Mathematics, Division of Material Science Luleå University of Technology Luleå Sweden
| | - Monica Montecchi
- Engineering Department University of Modena and Reggio Emilia Modena Italy
| | - Luca Pasquali
- Engineering Department University of Modena and Reggio Emilia Modena Italy
- Chemistry IOM‐CNR Institute Trieste Italy
- Department of Physics University of Johannesburg Auckland Park South Africa
| | | | - Ayman Nafady
- Department of Chemistry, College of Science King Saud University Riyadh Saudi Arabia
| | - Huda F. Khalil
- Electronics Materials Department City of Scientific Research and Technological Applications (SRTA‐City) Alexandria Egypt
| | | | | | - Mikhail Vagin
- Laboratory of Organic Electronics, Department of Science and Technology (ITN) Linköping University Norrköping Sweden
| | - Alberto Vomiero
- Department of Engineering Sciences and Mathematics, Division of Material Science Luleå University of Technology Luleå Sweden
- Department of Molecular Sciences and Nanosystems Ca' Foscari University of Venice Venezia Mestre Italy
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23
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Chang AS, Tahira A, Solangi ZA, Solangi AG, Ibupoto MH, Chang F, Medany SS, Nafady A, Kasry A, Willander M, Ibupoto ZH. Pd-Co3O4-based nanostructures for the development of enzyme-free glucose sensor. Bull Mater Sci 2022; 45:62. [DOI: 10.1007/s12034-021-02642-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/21/2021] [Accepted: 11/23/2021] [Indexed: 07/11/2023]
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24
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Ujjan ZA, Bhatti MA, Shah AA, Tahira A, Shaikh NM, Kumar S, Mugheri AQ, Medany SS, Nafady A, Alnjiman F, Emo M, Vigolo B, Ibupoto ZH. Simultaneous doping of sulfur and chloride ions into ZnO nanorods for improved photocatalytic properties towards degradation of methylene blue. Ceramics International 2022; 48:5535-5545. [DOI: 10.1016/j.ceramint.2021.11.098] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/11/2023]
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25
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Albaqami MD, Medany SS, Nafady A, Ibupoto MH, Willander M, Tahira A, Aftab U, Vigolo B, Ibupoto ZH. The fast nucleation/growth of Co 3O 4 nanowires on cotton silk: the facile development of a potentiometric uric acid biosensor. RSC Adv 2022; 12:18321-18332. [PMID: 35799920 PMCID: PMC9215123 DOI: 10.1039/d2ra03149c] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2022] [Accepted: 06/09/2022] [Indexed: 01/21/2023] Open
Abstract
In this study, we have used cotton silk as a source of abundant hydroxyl groups for the fast nucleation/growth of cobalt oxide (Co3O4) nanowires via a hydrothermal method. The crystal planes of the Co3O4 nanowires well matched the cubic phase. The as-synthesized Co3O4 nanowires mainly contained cobalt and oxygen elements and were found to be highly sensitive towards uric acid in 0.01 M phosphate buffer solution at pH 7.4. Importantly, the Co3O4 nanowires exhibited a large surface area, which was heavily utilized during the immobilization of the enzyme uricase via a physical adsorption method. The potentiometric response of the uricase-immobilizing Co3O4 nanowires was measured in the presence of uric acid (UA) against a silver/silver chloride (Ag/AgCl) reference electrode. The newly fabricated uric acid biosensor possessed a low limit of detection of 1.0 ± 0.2 nM with a wide linear range of 5 nM to 10 mM and sensitivity of 30.6 mV dec−1. Additionally, several related parameters of the developed uric acid biosensor were investigated, such as the repeatability, reproducibility, storage stability, selectivity, and dynamic response time, and these were found to be satisfactory. The good performance of the Co3O4 nanowires was verified based on the fast charge-transfer kinetics, as confirmed via electrochemical impedance spectroscopy. The successful practical use of the uric acid biosensor was demonstrated based on the recovery method. The observed performance of the uricase-immobilizing Co3O4 nanowires revealed that they could be considered as a promising and alternative tool for the detection of uric acid under both in vitro and in vivo conditions. Also, the use of cotton silk as a source of abundant hydroxyl groups may be considered for the remarkably fast nucleation/growth of other metal-oxide nanostructures, thereby facilitating the fabrication of functional electrochemical devices, such as batteries, water-splitting devices, and supercapacitors. In this study, we have used cotton silk as a source of abundant hydroxyl groups for the fast nucleation/growth of cobalt oxide (Co3O4) nanowires via a hydrothermal method.![]()
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Affiliation(s)
- Munirah D. Albaqami
- Department of Chemistry, College of Science, King Saud University, P. O. Box 2455, Riyadh 11451, Saudi Arabia
| | - Shymaa S. Medany
- Department of Chemistry, Faculty of Science, Cairo University, Cairo, Egypt
| | - Ayman Nafady
- Department of Chemistry, College of Science, King Saud University, P. O. Box 2455, Riyadh 11451, Saudi Arabia
| | | | - Magnus Willander
- Department of Science and Technology, Campus Norrköping, Linköping University, SE-60174 Norrköping, Sweden
| | - Aneela Tahira
- Dr. M.A Kazi Institute of Chemistry, University of Sindh Jamshoro, 76080, Sindh, Pakistan
| | - Umair Aftab
- Department of Metallurgy and Materials Engineering, Mehran University of Engineering and Technology, 76080 Jamshoro, Sindh, Pakistan
| | | | - Zafar Hussain Ibupoto
- Dr. M.A Kazi Institute of Chemistry, University of Sindh Jamshoro, 76080, Sindh, Pakistan
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26
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Solangi MY, Aftab U, Tahira A, Abro MI, Mazarro R, Morandi V, Nafady A, Medany SS, Infantes-Molina A, Ibupoto ZH. An efficient palladium oxide nanoparticles@Co3O4 nanocomposite with low chemisorbed species for enhanced oxygen evolution reaction. International Journal of Hydrogen Energy 2022; 47:3834-3845. [DOI: 10.1016/j.ijhydene.2021.11.042] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/11/2023]
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27
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Bhatti MA, Tahira A, Shah AA, Aftab U, Vigolo B, Khattab AR, Nafady A, Halepoto IA, Tonezzer M, Ibupoto ZH. Facile synthesis of a luminescent carbon material from yogurt for the efficient photocatalytic degradation of methylene blue. RSC Adv 2022; 12:25549-25564. [PMID: 36199347 PMCID: PMC9450116 DOI: 10.1039/d2ra04749g] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2022] [Accepted: 08/22/2022] [Indexed: 11/21/2022] Open
Abstract
The present study is focused on yogurt as a simple, inexpensive, abundant, and green source for the preparation of luminescent carbon material for enhancing the photodegradation of methylene blue (MB). It introduces an ecological and sustainable approach for the large-scale production of carbon material using the direct thermal annealing of yogurt in a muffle furnace. The size of the as-prepared carbon material is about 200–300 nm, with average particle size distribution of 355 nm. The material exhibits clear luminescence under illumination with ultraviolet light. The synthesized carbon material shows an outstanding degradation functionality of MB under the irradiation of ultraviolet (UV) light in aqueous media. Various dye degradation parameters such as initial dye concentration, catalyst dose, pH of dye solution, and scavenger effects have been investigated. The optimum MB concentration was found to be 2.3 × 10−5 M with a degradation efficiency of 94.8%. The degradation was highly enhanced at pH 11 with a degradation efficiency of 98.11%. The degradation of MB under highly alkaline conditions was mainly governed by the high amount of hydroxyl radicals. Furthermore, the scavenger study confirmed that the hydroxyl radicals were mainly involved in the degradation process. The degradation kinetics of MB followed first order kinetics with large values of rate constant. The reusability was also studied to ensure the stability of the as-prepared carbon material during the degradation of MB. The preparation of carbon materials with efficient photosensitivity for the degradation of organic dyes from yogurt shows a green and innovative methodology. Therefore, it can be of great interest for future studies related to energy and environmental applications. Left hand side: structural and optical aspects of the as-prepared carbon material from yogurt. Right hand side: the absorbance spectra of methylene blue degradation using the as-prepared carbon material from yogurt.![]()
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Affiliation(s)
- Muhammad Ali Bhatti
- Institute of Environmental Sciences, University of Sindh, Jamshoro, 76080, Sindh, Pakistan
| | - Aneela Tahira
- Dr. M. A. Kazi Institute of Chemistry, University of Sindh, Jamshoro, 76080, Sindh, Pakistan
| | - Aqeel Ahmed Shah
- Department of Metallurgy, NED University of Engineering and Technology, Karachi, Pakistan
| | - Umair Aftab
- Mehran University of Engineering and Technology, 7680 Jamshoro, Sindh, Pakistan
| | | | - Amira R. Khattab
- Department of Pharmacognosy, College of Pharmacy, Arab Academy for Science, Technology and Maritime Transport, Alexandria 1029, Egypt
| | - Ayman Nafady
- Department of Chemistry, College of Science, King Saud University, Riyadh 11451, Saudi Arabia
| | - Imran Ali Halepoto
- Institute of Physics University of Sindh, Jamshoro, 76080, Sindh, Pakistan
| | - Matteo Tonezzer
- IMEM-CNR, Sede di Trento-FBK, Via alla Cascata 56/C, 38123 Trento, Italy
| | - Zafar Hussain Ibupoto
- Dr. M. A. Kazi Institute of Chemistry, University of Sindh, Jamshoro, 76080, Sindh, Pakistan
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28
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Ujan ZA, Tahira A, Mahesar AA, Markhand AH, Bhatti AL, Mugheri AQ, Bhatti MA, Shaikh NM, Mari RH, Nafady A, Ibupoto ZH. The Crystal Disorder into ZnO with Addition of Bromine and It’s Outperform Role in the Photodegradation of Methylene Blue. J CLUST SCI 2022. [DOI: 10.1007/s10876-020-01958-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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29
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Bhatti AL, Tahira A, Gradone A, Mazzaro R, Morandi V, aftab U, Abro MI, Nafady A, Qi K, Infantes-Molina A, Vomiero A, Ibupoto ZH. Nanostructured Co3O4 electrocatalyst for OER: The role of organic polyelectrolytes as soft templates. Electrochim Acta 2021. [DOI: 10.1016/j.electacta.2021.139338] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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30
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Mugheri AQ, Tahira A, Aftab U, Nafady A, Vigolo B, Ibupoto ZH. Facile
Co
3
O
4
nanoparticles deposited on polyvinylpyrrolidine for efficient water oxidation in alkaline media. J CHIN CHEM SOC-TAIP 2021. [DOI: 10.1002/jccs.202100365] [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: 11/09/2022]
Affiliation(s)
- Abdul Qayoom Mugheri
- Dr. M.A Kazi Institute of Chemistry University of Sindh Jamshoro Jamshoro Pakistan
| | - Aneela Tahira
- Dr. M.A Kazi Institute of Chemistry University of Sindh Jamshoro Jamshoro Pakistan
| | - Umair Aftab
- Department of Metallurgy and Materials Engineering Mehran University of Engineering and Technology Jamshoro Pakistan
| | - Ayman Nafady
- Department of Chemistry, College of Science King Saud University Riyadh Saudi Arabia
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31
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Khand AA, Lakho SA, Tahira A, Ubaidullah M, Alothman AA, Aljadoa K, Nafady A, Ibupoto ZH. Facile Electrochemical Determination of Methotrexate (MTX) Using Glassy Carbon Electrode-Modified with Electronically Disordered NiO Nanostructures. Nanomaterials (Basel) 2021; 11:nano11051266. [PMID: 34065856 PMCID: PMC8150394 DOI: 10.3390/nano11051266] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/29/2021] [Revised: 04/25/2021] [Accepted: 04/27/2021] [Indexed: 02/01/2023]
Abstract
Recently, the oxidative behavior of methotrexate (MTX) anticancer drug is highly demanded, due to its side effects on healthy cells, despite being a very challenging task. In this study, we have prepared porous NiO material using sodium sulfate as an electronic disorder reagent by hydrothermal method and found it highly sensitive and selective for the oxidation of MTX. The synthesized NiO nanostructures were characterized by scanning electron microscope (SEM) and X-ray diffraction (XRD) techniques. These physical characterizations delineated the porous morphology and cubic crystalline phase of NiO. Different electrochemical approaches have been utilized to determine the MTX concentrations in 0.04 M Britton-Robinson buffer (BRB) at pH 2 using glassy carbon electrode (GCE)-modified with electronically disordered NiO nanostructures. The linear range for MTX using cyclic voltammetry (CV) was found to be from 5 to 30 nM, and the limit of detection (LOD) and limit of quantification (LOQ) were 1.46 nM and 4.86 nM, respectively, whereas the linear range obtained via linear sweep voltammetry (LSV) was estimated as 15-90 nM with LOD and LOQ of 0.819 nM and 2.713 nM, respectively. Additionally, amperometric studies revealed a linear range from 10 to70 nM with LOD and LOQ of 0.1 nM and 1.3 nM, respectively. Importantly, MTX was successfully monitored in pharmaceutical products using the standard recovery method. Thus, the proposed approach for the synthesis of active metal oxide materials could be sued for the determination of other anticancer drugs in real samples and other biomedical applications.
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Affiliation(s)
- Aftab A. Khand
- School of Life Sciences, Tsinghua University, Beijing 100084, China
- Department of Physiology, University of Sindh, Jamshoro 76080, Sindh, Pakistan
- Correspondence: (A.A.K.); (S.A.L.); (Z.H.I.)
| | - Saeed A. Lakho
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy and Pharmaceutical Sciences, University of Karachi, Karachi 75270, Sindh, Pakistan
- Correspondence: (A.A.K.); (S.A.L.); (Z.H.I.)
| | - Aneela Tahira
- Dr. M.A Kazi Institute of Chemistry, University of Sindh, Jamshoro 76080, Sindh, Pakistan;
| | - Mohd Ubaidullah
- Department of Chemistry, College of Science, King Saud University, Riyadh 11451, Saudi Arabia; (M.U.); (A.A.A.); (K.A.); (A.N.)
| | - Asma A. Alothman
- Department of Chemistry, College of Science, King Saud University, Riyadh 11451, Saudi Arabia; (M.U.); (A.A.A.); (K.A.); (A.N.)
| | - Khoulwod Aljadoa
- Department of Chemistry, College of Science, King Saud University, Riyadh 11451, Saudi Arabia; (M.U.); (A.A.A.); (K.A.); (A.N.)
| | - Ayman Nafady
- Department of Chemistry, College of Science, King Saud University, Riyadh 11451, Saudi Arabia; (M.U.); (A.A.A.); (K.A.); (A.N.)
| | - Zafar H. Ibupoto
- Dr. M.A Kazi Institute of Chemistry, University of Sindh, Jamshoro 76080, Sindh, Pakistan;
- Correspondence: (A.A.K.); (S.A.L.); (Z.H.I.)
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Mugheri AQ, Tahira A, Aftab U, Abro MI, Bhatti AL, Ali S, Abbasi MA, Ibupoto ZH. A Low Charge Transfer Resistance CuO Composite for Efficient Oxygen Evolution Reaction in Alkaline Media. J Nanosci Nanotechnol 2021; 21:2613-2620. [PMID: 33500083 DOI: 10.1166/jnn.2021.19091] [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: 06/12/2023]
Abstract
An efficient, simple, environment-friendly and inexpensive cupric oxide (CuO) electrocatalyst for oxygen evolution reaction (OER) is demonstrated. CuO is chemically deposited on the porous carbon material obtained from the dehydration of common sugar. The morphology of CuO on the porous carbon material is plate-like and monoclinic crystalline phase is confirmed by powder X-ray diffraction. The OER activity of CuO nanostructures is investigated in 1 M KOH aqueous solution. To date, the proposed electrocatalyst has the lowest possible potential of 1.49 V versus RHE (reversible hydrogen electrode) to achieve a current density of 20 mA/cm₂ among the CuO based electrocatalysts and has Tafel slope of 115 mV dec-1. The electrocatalyst exhibits an excellent long-term stability for 6 hours along with significant durability. The enhanced catalytic active centers of CuO on the carbon material are due to the porous structure of carbon as well as strong coupling between CuO-C. The functionalization of metal oxides or other related nanostructured materials on porous carbon obtained from common sugar provides an opportunity for the development of efficient energy conversion and energy storage systems.
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Affiliation(s)
- Abdul Qayoom Mugheri
- Dr. M.A Kazi Institute of Chemistry University of Sindh Jamshoro, 76080, Sindh Pakistan
| | - Aneela Tahira
- Department of Science and Technology, Campus Norrkoping, Linkoping University, SE-60174 Norrkoping, Sweden
| | - Umair Aftab
- Mehran University of Engineering and Technology, 7680 Jamshoro, Sindh Pakistan
| | - Muhammad Ishaq Abro
- Mehran University of Engineering and Technology, 7680 Jamshoro, Sindh Pakistan
| | | | - Shahid Ali
- University of Baluchistan, Quetta, Baluchistan, 87300, Pakistan
| | - Mazhar Ali Abbasi
- Institute of Physics University of Sindh Jamshoro, 76080, Sindh Pakistan
| | - Zafar Hussain Ibupoto
- Dr. M.A Kazi Institute of Chemistry University of Sindh Jamshoro, 76080, Sindh Pakistan
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Shah AA, Bhatti MA, Chandio AD, Almani KF, Abbasi MA, Bhatti AL, Mugheri AQ, Willander M, Nour O, Waryani B, Tahira A, Ibupoto ZH. Tin as an Effective Doping Agent into ZnO for the Improved Photodegradation of Rhodamine B. J Nanosci Nanotechnol 2021; 21:2529-2537. [PMID: 33500071 DOI: 10.1166/jnn.2021.19106] [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: 06/12/2023]
Abstract
We have fabricated ZnO nano rods by hydrothermal method and successively doped them with tin (Sn) using different concentrations of 25, 50, 75 and 100 mg of tin chloride. XRD of the fabricated structures showed that ZnO possess hexagonal wurtzite phase. Scanning electron microscopy (SEM) was used to explore the morphology and it shows nanorod like morphology for all samples and no considerable change in the structural features were found. The dimension of nanorod is 200 to 300 nm. The doped materials were then investigated for their photo catalytic degradation of environmental pollutant Rhodamine B. The performance of doped ZnO is compared with the pristine ZnO. Scanning electron microscopy (SEM) was used to explore the morphology and it shows nanorod like morphology for all samples and no considerable change in the structural features were found. The dimension of nanorod is 200 to 300 nm. XRD of the fabricated structures showed that ZnO possess hexagonal wurtzite phase. Photo catalytic activity of rhodamine B was investigated under UV light and a maximum degradation efficiency of 85% was obtained. The optical property reveals the reduction in band gap of upto 17.14% for 100 mg Sn doped ZnO. The degradation is followed by the pseudo order kinetics. The produced results are unique in terms of facile synthesis of Sn doped ZnO and excellent photo degradation efficiency, therefore these materials can be used for other environmental applications.
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Affiliation(s)
- Aqeel Ahmed Shah
- NED University of Engineering and Technology Karachi, Sindh 75270, Pakistan
| | - Muhammad Ali Bhatti
- Department of Environmental Sciences University of Sindh Jamshoro, Sindh 76080, Pakistan
| | - Ali Dad Chandio
- NED University of Engineering and Technology Karachi, Sindh 75270, Pakistan
| | - Khalida Faryal Almani
- Department of Environmental Sciences University of Sindh Jamshoro, Sindh 76080, Pakistan
| | - Mazhar Ali Abbasi
- Institute of Physics University of Sindh Jamshoro, Sindh 76080, Pakistan
| | | | - Abdul Qayoom Mugheri
- Dr. M. A Kazi Institute of Chemistry University of Sindh Jamshoro, Sindh 76080, Pakistan
| | - Magnus Willander
- Department of Science and Technology, Campus Norrkoping, Linkoping University, SE-60174 Norrkoping, Sweden
| | - Omer Nour
- Department of Science and Technology, Campus Norrkoping, Linkoping University, SE-60174 Norrkoping, Sweden
| | - Baradi Waryani
- Department of Fresh Water Biology and Fisheries University of Sindh Jamshoro, Sindh 76080, Pakistan
| | - Aneela Tahira
- Department of Science and Technology, Campus Norrkoping, Linkoping University, SE-60174 Norrkoping, Sweden
| | - Zafar Hussain Ibupoto
- Dr. M. A Kazi Institute of Chemistry University of Sindh Jamshoro, Sindh 76080, Pakistan
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Mugheri AQ, Tahira A, Aftab U, Bhatti AL, Lal R, Bhatti MA, Memon GZ, Mallah AB, Abassi MA, Nafady A, Ibupoto ZH. Chemically Coupled Cobalt Oxide Nanosheets Decorated onto the Surface of Multiwall Carbon Nanotubes for Favorable Oxygen Evolution Reaction. J Nanosci Nanotechnol 2021; 21:2660-2667. [PMID: 33500090 DOI: 10.1166/jnn.2021.19108] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Cobalt oxide has been widely investigated among potential transition metal oxides for the electrochemical energy conversion, storage, and water splitting. However, they have inherently low electronic conductivity and high corrosive nature in alkaline media. Herein, we propose a promising and facile approach to improve the conductivity and charge transport of cobalt oxide Co₃O₄ through chemical coupling with well-dispersed multiwall carbon nanotubes (MWCNTs) during hydrothermal treatment. The morphology of prepared composite material consisting of nanosheets which are anchored on the MWCNTs as confirmed by scanning electron microscopy (SEM). A cubic crystalline system is exhibited by the cobalt oxide as confirmed by the X-ray diffraction study. The Co, O, and C are the only elements present in the composite material. FTIR study has indicated the successful coupling of cobalt oxide with MWCNTs. The chemically coupled cobalt oxide onto the surface of MWCNTs composite is found highly active towards oxygen evolution reaction (OER) with a low onset potential 1.44 V versus RHE, low overpotential 262 mV at 10 mAcm-2 and small Tafel slope 81 mV dec-1. For continuous operation of 40 hours during durability test, no decay in activity was recorded. Electrochemical impedance study further revealed a low charge transfer resistance of 70.64 Ohms for the composite material during the electrochemical reaction and which strongly favored OER kinetics. This work provides a simple, low cost, and smartly designing electrocatalysts via hydrothermal reaction for the catalysis and energy storage applications.
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Affiliation(s)
- Abdul Qayoom Mugheri
- M. A Kazi Institute of Chemistry University of Sindh Jamshoro, 76080, Sindh Pakistan
| | - Aneela Tahira
- Department of Science and Technology, Campus Norrköping, Linköping University, SE-60174 Norrköping, Sweden
| | - Umair Aftab
- Mehran University of Engineering and Technology, 76080 Jamshoro, Sindh Pakistan
| | | | - Ramesh Lal
- Shah Abdul Latif University of Khairpur Mirs, 66111, Sindh Pakistan
| | - Muhammad Ali Bhatti
- Department of Environmental Sciences University of Sindh Jamshoro, 76080, Sindh Pakistan
| | - Ghulam Zuhra Memon
- M. A Kazi Institute of Chemistry University of Sindh Jamshoro, 76080, Sindh Pakistan
| | - Arfana Begum Mallah
- M. A Kazi Institute of Chemistry University of Sindh Jamshoro, 76080, Sindh Pakistan
| | - Mazhar Ali Abassi
- Institute of Physics University of Sindh Jamshoro, 76080, Sindh Pakistan
| | - Ayman Nafady
- Department of Chemistry, College of Science, King Saud University, Riyadh 11451, Saudi Arabia
| | - Zafar Hussain Ibupoto
- M. A Kazi Institute of Chemistry University of Sindh Jamshoro, 76080, Sindh Pakistan
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Khokhar SP, Abbasi MA, Aftab U, Abro MI, Shah AA, Chandio AD, Bhatti AL, Tahira A, Ibupoto ZH. An Efficient Nickel Sulfide@NiO Nanocomposite Catalyst with High Density of Active Sites for the Hydrogen Evolution Reaction in Alkaline Media. J Nanosci Nanotechnol 2021; 21:2520-2528. [PMID: 33500070 DOI: 10.1166/jnn.2021.19094] [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: 06/12/2023]
Abstract
Efficient hydrogen evolution reaction (HER) catalysts based on the earth-abundant materials are highly vital to design practical and environmentally friendly water splitting devices. In this study, we present an optimized strategy for the development of active catalysts for hydrogen evolution reaction HER. The composite catalysts are prepared with the nanosurface of NiO for the deposition of NiS by hydrothermal method. In alkaline electrolyte, the NiS/NiO nanocomposite has shown excellent catalytic HER properties at the low onset potential and small Tafel slope of 72 mVdec-1. A current density of 10 mA/cm² is achieved by the nanocomposite obtained with 0.4 gram of NiO as nanosurface for the deposition of NiS (sample 4) at the cost of 429 mV versus RHE. The sample 4 carries more active sites that allow it to act as excellent HER catalyst. Based on this study, we conclude that increasing the nickel oxide content into composite sample facilitates the HER process. Additionally, a long term HER stability for 10 hours and good durability is also demonstrated by the sample 4. Our findings reveal that the optimization of nickel oxide content in the preparation of catalyst leads to the excellent HER activity for the design of practical water splitting devices and other related applications.
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Affiliation(s)
- Shams Parveen Khokhar
- Nanomaterials Laboratory Institute of Physics University of Sindh Jamshoro, 76080, Sindh Pakistan
| | - Mazhar Ali Abbasi
- Nanomaterials Laboratory Institute of Physics University of Sindh Jamshoro, 76080, Sindh Pakistan
| | - Umair Aftab
- Mehran University of Engineering and Technology, 76080 Jamshoro, Sindh Pakistan
| | - Muhammad Ishaq Abro
- Mehran University of Engineering and Technology, 76080 Jamshoro, Sindh Pakistan
| | - Aqeel Ahmed Shah
- NED University of Engineering Sciences and Technology, Karachi, 75270, Sindh Pakistan
| | - Ali Dad Chandio
- NED University of Engineering Sciences and Technology, Karachi, 75270, Sindh Pakistan
| | - Adeel Liaquat Bhatti
- Nanomaterials Laboratory Institute of Physics University of Sindh Jamshoro, 76080, Sindh Pakistan
| | - Aneela Tahira
- Department of Science and Technology, Campus Norrkoping, Linkoping University, SE-60174 Norrkoping, Sweden
| | - Zafar Hussain Ibupoto
- Dr. M. A. Kazi Institute of Chemistry University of Sindh Jamshoro, 76080, Sindh Pakistan
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Bhatti MA, Shah AA, Almaani KF, Tahira A, Chandio AD, Willander M, Nur O, Mugheri AQ, Bhatti AL, Waryani B, Nafady A, Ibupoto ZH. TiO₂/ZnO Nanocomposite Material for Efficient Degradation of Methylene Blue. J Nanosci Nanotechnol 2021; 21:2511-2519. [PMID: 33500069 DOI: 10.1166/jnn.2021.19107] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
In this research work, we have produced a composite material consisting titanium dioxide (TiO₂) and zinc oxide (ZnO) nanostructures via precipitation method. Scanning electron microscopy (SEM) study has shown the mixture of nanostructures consisting nanorods and nano flower. Energy dispersive spectroscopy (EDS) study has confirmed the presence of Ti, Zn and O as main elements in the composite. X-ray diffraction (XRD) study has revealed that the successful presence of TiO₂ and ZnO in the composite. The composite material exhibits small optical energy band gap which led to reduction of the charge recombination rate of electron-hole pairs. The band gap for the composite TiO₂/ZnO samples namely 1, 2, 3 and 4 is 3.18, 3.00, 2.97 and 2.83 eV respectively. Small optical bandgap gives less relaxation time for the recombination of electron and hole pairs, thus favorable photodegradation is found. The degradation efficiency for the TiO₂/ZnO samples for methylene blue in order of 55.03%, 75.7%, 85.14% and 90.08% is found for the samples 1, 2, 3 and 4 respectively. The proposed study of titanium dioxide addition into ZnO is facile and inexpensive for the development of efficient photocatalysts. This can be capitalized at large scale for the energy and.
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Affiliation(s)
- Muhammad Ali Bhatti
- Department of Environmental Sciences University of Sindh Jamshoro, 76080, Sindh Pakistan
| | - Aqeel Ahmed Shah
- Nadirshaw Eduljee Dinshaw (NED) University of Engineering and Technology Karachi, 75270, Pakistan
| | - Khalida Faryal Almaani
- Department of Environmental Sciences University of Sindh Jamshoro, 76080, Sindh Pakistan
| | - Aneela Tahira
- Department of Science and Technology, Campus Norrkoping, Linkoping University, SE-60174 Norrkoping, Sweden
| | - Ali Dad Chandio
- Nadirshaw Eduljee Dinshaw (NED) University of Engineering and Technology Karachi, 75270, Pakistan
| | - Magnus Willander
- Department of Science and Technology, Campus Norrkoping, Linkoping University, SE-60174 Norrkoping, Sweden
| | - Omer Nur
- Department of Science and Technology, Campus Norrkoping, Linkoping University, SE-60174 Norrkoping, Sweden
| | - Abdul Qayoom Mugheri
- Dr. M.A Kazi Institute of Chemistry University of Sindh Jamshoro, 76080, Sindh Pakistan
| | | | - Baradi Waryani
- Department of Fresh Water Biology and Fisheries University of Sindh Jamshoro, 76080, Sindh Pakistan
| | - Ayman Nafady
- Department of Chemistry, College of Science, King Saud University, Riyadh 11451, Saudi Arabia
| | - Zafar Hussain Ibupoto
- Dr. M.A Kazi Institute of Chemistry University of Sindh Jamshoro, 76080, Sindh Pakistan
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Bhatti AL, Aftab U, Tahira A, Abro MI, Mari RH, Samoon MK, Aghem MH, Shaikh NM, Mugheri AQ, Ibupoto ZH. An Efficient and Functional Fe₃O₄/Co₃O₄ Composite for Oxygen Evolution Reaction. J Nanosci Nanotechnol 2021; 21:2675-2680. [PMID: 33500092 DOI: 10.1166/jnn.2021.19098] [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: 06/12/2023]
Abstract
The design of efficient, stable, durable and noble metal free electro catalysts for oxygen evolution reaction (OER) are of immediate need, but very challenging task. In this study, iron induction into cobalt oxide (Co₃O₄) has resulted composite structure by wet chemical method. The iron impurity has brought an electronic disorder into Fe₃O₄/cobalt oxide composite thereby efficient oxygen evolution reaction is demonstrated. An addition of iron content into composite resulted the alternation of morphology from Nano rods to clusters of nanoparticles. The successive addition of iron into composite system reduced the onset potential of OER as compared to the pristine cobalt oxide. A Tafel slope of 80 mVdec-1 indicates the favorable oxygen evolution reaction kinetics on the sample 4. An over-potential of 370 mV is required to reach a 10 mAcm-2 current density which is acceptable for a nonprecious catalyst. The catalyst is highly durable and stable for 30 hours. Electrochemical impedance spectroscopy further provided a deeper insight on charge transfer resistance and sample 4 has low charge transfer resistance that supported the OER polarization curves. The sample 4 has more electrochemical active surface area of 393.5 cm². These obtained results are exciting and highlighting the importance of composite structure and leave a huge space for the future investigations on composite materials for energy related applications.
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Affiliation(s)
| | - Umair Aftab
- Mehran University of Engineering and Technology, 76080 Jamshoro, Sindh Pakistan
| | - Aneela Tahira
- Department of Science and Technology, Campus Norrköping, Linköping University, SE-581 83 Norrköping, Sweden
| | - Muhammad Ishaq Abro
- Mehran University of Engineering and Technology, 76080 Jamshoro, Sindh Pakistan
| | - Riaz Hussain Mari
- Institute of Physics, University of Sindh, Jamshoro, 76080, Sindh Pakistan
| | - Muhammad Kashif Samoon
- Institute of Pure and Applied Geology University of Sindh, Jamshoro 76080, Sindh, Pakistan
| | - Muhammad Hassan Aghem
- Institute of Pure and Applied Geology University of Sindh, Jamshoro 76080, Sindh, Pakistan
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Amin S, Tahira A, Solangi A, Nafady A, Ibupoto ZH. MoS x-Co₃O₄ Nanocomposite for Selective Determination of Ascorbic Acid. J Nanosci Nanotechnol 2021; 21:2595-2603. [PMID: 33500081 DOI: 10.1166/jnn.2021.19126] [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: 06/12/2023]
Abstract
Designing a nanocomposite with sensitive and selective determination of ascorbic acid is challenging task. It is possible through the exploitation of attractive features of nanoscience and nanotechnology for the synthesis of nanostructured materials. Herein, we report the decoration of nanoparticle of MoSx on the surface of Co₃O₄ nanowires by hydrothermal method. The MoSx nanoparticles shared the large surface on the Co₃O₄ nanowires, thus it supported in the development enzyme free ascorbic acid sensor. Non-enzymatic sensor based on MoSx-Co₃O₄ composite was found very selective for the determination of ascorbic acid (AA) in phosphate buffer solution of pH 7.4. The MoSx-Co₃O₄ nanocomposite was used to modify the glassy carbon electrode to measure AA from variety of practical samples. The MoSx-Co₃O₄ nanocomposite was used to modify the glassy carbon electrode and it has shown the attractive analytical features such as a low working potential +0.3 V, linear range of concentration from 100-7000 μM, low limit of detection 14 μM, and low limit of quantification (LOQ) of 42 μM. The developed sensor is highly selective and stable. Importantly, it was applied successfully for the practical applications such as detection of AA from grapefruit, tomato and lemon juice. The excellent electrochemical properties of fabricated MoSx-Co₃O₄ nanocomposite can be attributed to the increasing electro active surface area of MoSx. The presented nanocomposite is earth abundant, environment friendly and inexpensive and it holds promising features for the selective and sensitive determination of AA from practical applications. The nanocomposite can be capitalized into the wide range of biomedical applications.
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Affiliation(s)
- Sidra Amin
- National Centre of Excellence in Analytical Chemistry, University of Sindh, Jamshoro 76080, Pakistan
| | - Aneela Tahira
- Department of Science and Technology, Campus Norrkoping, Linkoping University, SE-60174 Norrkoping, Sweden
| | - Amber Solangi
- National Centre of Excellence in Analytical Chemistry, University of Sindh, Jamshoro 76080, Pakistan
| | - Ayman Nafady
- Department of Chemistry, College of Science, King Saud University, Riyadh 11451, Saudi Arabia
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Bhatti MA, Tahira A, Chandio AD, Almani KF, Bhatti AL, Waryani B, Nafady A, Ibupoto ZH. Enzymes and phytochemicals from neem extract robustly tuned the photocatalytic activity of ZnO for the degradation of malachite green (MG) in aqueous media. Res Chem Intermed 2021. [DOI: 10.1007/s11164-020-04391-6] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [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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Chang AS, Tahira A, Chang F, Memon NN, Nafady A, Kasry A, Ibupoto ZH. Silky Co 3O 4 nanostructures for the selective and sensitive enzyme free sensing of uric acid. RSC Adv 2021; 11:5156-5162. [PMID: 35424461 PMCID: PMC8694662 DOI: 10.1039/d0ra10462k] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [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: 12/12/2020] [Accepted: 01/22/2021] [Indexed: 12/22/2022] Open
Abstract
In this study, simple, new and functional silky nanostructures of Co3O4 are prepared by hydrothermal method. These nanostructures are successfully used for the enzyme free sensing of uric acid in 0.1 M phosphate buffer solution of pH 7.3. Physical characterization experiments were carried out to explore the morphology, composition and crystalline phase of the newly prepared Co3O4 nanostructures. Scanning electron microscopy (SEM) shows a silk like morphology and energy dispersive spectroscopy (EDS) revealed the presence of Co and O as the main elements. Powder X-ray diffraction (XRD) demonstrates a cubic crystallography with well resolved diffraction patterns. The electrochemical activity of these silky Co3O4 nanostructures was evaluated by cyclic voltammetry (CV) in a 0.1 M phosphate buffer solution at pH 7.3. The high purity and unique morphology of Co3O4 shows a highly sensitive and selective response towards the non-enzymatic sensing of uric acid. This uric acid sensor exhibits a linear range of 0.5 mM to 3.5 mM uric acid and a 0.1 mM limit of detection. The anti-interference capability of this uric acid sensor was monitored in the presence of common interfering species. Furthermore, electrochemical impedance spectroscopy confirms a low charge transfer resistance value of 5.11 K Ω cm2 for silky Co3O4 nanostructures which significantly supported the CV results. The proposed modified electrode is stable, selective and reproducible which confirms its possible practical use. Silky Co3O4 nanostructures can be of great importance for diverse electrochemical applications due to their excellent electrochemical activity and large surface area.
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Affiliation(s)
- Abdul Sattar Chang
- Dr. M.A Kazi Institute of Chemistry, University of Sindh Jamshoro 76080 Sindh Pakistan
| | - Aneela Tahira
- Dr. M.A Kazi Institute of Chemistry, University of Sindh Jamshoro 76080 Sindh Pakistan
| | - Fouzia Chang
- Dr. M.A Kazi Institute of Chemistry, University of Sindh Jamshoro 76080 Sindh Pakistan
| | - Nusrat Naeem Memon
- Dr. M.A Kazi Institute of Chemistry, University of Sindh Jamshoro 76080 Sindh Pakistan
| | - Ayman Nafady
- Department of Chemistry, College of Science, King Saud University Riyadh 11451 Saudi Arabia
| | - Amal Kasry
- Nanotechnology Research Centre (NTRC), The British University in Egypt (BUE) Egypt
| | - Zafar Hussain Ibupoto
- Dr. M.A Kazi Institute of Chemistry, University of Sindh Jamshoro 76080 Sindh Pakistan
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Ahmed Khand A, Ahmed Lakho S, Tahira A, Ahmed M, Aftab U, Abro MI, Juno AA, Nafady A, Ibupoto ZH. Synthesis of Sheet Like Nanostructures of NiO Using Potassium Dichromate as Surface Modifying Agent for the Sensitive and Selective Determination of Amlodipine Besylate (ADB) Drug. ELECTROANAL 2021. [DOI: 10.1002/elan.202060571] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Affiliation(s)
- Aftab Ahmed Khand
- School of Life Sciences Tsinghua University Beijing Beijing 100084 China
- Department of Physiology University of Sindh Jamshoro Jamshoro 76080 Sindh Pakistan
| | - Saeed Ahmed Lakho
- Department of Pharmaceutical Chemistry Faculty of Pharmacy and Pharmaceutical Sciences University of Karachi Karachi Sindh Pakistan
| | - Aneela Tahira
- Department of Science and Technology Campus Norrköping Linköping University SE-60174 Norrköping Sweden
| | - Mansoor Ahmed
- Department of Pharmaceutical Chemistry Faculty of Pharmacy and Pharmaceutical Sciences University of Karachi Karachi Sindh Pakistan
| | - Umair Aftab
- Department of Metallurgy and Materials Engineering MUET Jamshoro Sindh Pakistan
| | - Muhammad Ishaq Abro
- Department of Metallurgy and Materials Engineering MUET Jamshoro Sindh Pakistan
| | | | - Ayman Nafady
- Department of Chemistry College of Science King Saud University Riyadh 11451 Saudi Arabia
| | - Zafar Hussain Ibupoto
- Dr. M.A. Kazi Institute of Chemistry University of Sindh Jamshoro Jamshoro 76080 Sindh Pakistan
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Tahira A, Ibupoto ZH, Nafady A, Willander M, Nur O. Efficient and Stable Co3O4/ZnO Nanocomposite for Photochemical Water Splitting. J CLUST SCI 2021. [DOI: 10.1007/s10876-021-01980-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Mustafa E, Tahira A, Adam RE, Ibupoto ZH, Elhag S, Willander M, Nur O. Corrigendum to “Efficient Ni–Fe layered double hydroxides/ ZnO nanostructures for photochemical water splitting” [J. Solid State Chem. 273 (2019) 186–191]. J SOLID STATE CHEM 2021. [DOI: 10.1016/j.jssc.2020.121764] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Aftab U, Tahira A, Mazzaro R, Morandi V, Ishaq Abro M, Baloch MM, Yu C, Ibupoto ZH. Nickel-cobalt bimetallic sulfide NiCo 2S 4 nanostructures for a robust hydrogen evolution reaction in acidic media. RSC Adv 2020; 10:22196-22203. [PMID: 35516652 PMCID: PMC9054539 DOI: 10.1039/d0ra03191g] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [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: 04/09/2020] [Accepted: 05/23/2020] [Indexed: 11/21/2022] Open
Abstract
There are many challenges associated with the fabrication of efficient, inexpensive, durable and very stable nonprecious metal catalysts for the hydrogen evolution reaction (HER). In this study, we have designed a facile strategy by tailoring the concentration of precursors to successfully obtain nickel–cobalt bimetallic sulfide (NiCo2S4) using a simple hydrothermal method. The morphology of the newly prepared NiCo2S4 comprised a mixture of microparticles and nanorods, which were few microns in dimension. The crystallinity of the composite sample was found to be excellent with a cubic phase. The sample that contained a higher amount of cobalt compared to nickel and produced single-phase NiCo2S4 exhibited considerably improved HER performance. The variation in the salt precursor concentration during the synthesis of a material is a simple methodology to produce a scalable platinum-free catalyst for HER. The advantageous features of the multiple active sites of cobalt in the CN-21 sample as compared to that for pristine CoS and NiS laid the foundation for the provision of abundant active edges for HER. The composite sample produced a current density of 10 mA cm−2 at an overpotential of 345 mV. Also, it exhibited a Tafel value of 60 mV dec−1, which predominantly ensured rapid charge transfer kinetics during HER. CN-21 was highly durable and stable for 30 hours. Electrochemical impedance spectroscopy showed that the charge transfer resistance was 21.88 ohms, which further validated the HER polarization curves and Tafel results. CN-21 exhibited a double layer capacitance of 4.69 μF cm−2 and a significant electrochemically active surface area of 134.0 cm2, which again supported the robust efficiency for HER. The obtained results reveal that our developed NiCo2S4 catalyst has a high density of active edges, and it is a non-noble metal catalyst for the hydrogen evolution reaction. The present findings provide an alternative strategy and an active nonprecious material for the development of energy-related applications. There are many challenges associated with the fabrication of efficient, inexpensive, durable and very stable nonprecious metal catalysts for the hydrogen evolution reaction (HER).![]()
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Affiliation(s)
- Umair Aftab
- Mehran University of Engineering and Technology 7680 Jamshoro Sindh Pakistan
| | - Aneela Tahira
- Department of Science and Technology, Campus Norrkoping, Linkoping University SE-60174 Norrkoping Sweden
| | - Raffaello Mazzaro
- Institute for Microelectronics and Microsystems, Italian National Research Council, Section of Bologna Via Piero Gobetti 101 40129 Bologna Italy
| | - Vittorio Morandi
- Institute for Microelectronics and Microsystems, Italian National Research Council, Section of Bologna Via Piero Gobetti 101 40129 Bologna Italy
| | - Muhammad Ishaq Abro
- Mehran University of Engineering and Technology 7680 Jamshoro Sindh Pakistan
| | | | - Cong Yu
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences Changchun People's Republic of China
| | - Zafar Hussain Ibupoto
- Dr M. A. Kazi Institute of Chemistry, University of Sindh Jamshoro 76080 Sindh Pakistan
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Arfan M, Tahira A, Mannan A, Fatima T. A Facile Approach to the Synthesis of Benzothiazoles from N-Protected Amino Acids. Russ J Org Chem 2020. [DOI: 10.1134/s1070428020020190] [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: 11/22/2022]
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Amin S, Tahira A, Solangi AR, Mazzaro R, Ibupoto ZH, Fatima A, Vomiero A. Functional Nickel Oxide Nanostructures for Ethanol Oxidation in Alkaline Media. ELECTROANAL 2020. [DOI: 10.1002/elan.201900662] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Sidra Amin
- Division of Materials Science, Department of Engineering Sciences & Mathematics Luleå University of Technology 97187 Luleå Sweden
- National Centre of Excellence in Analytical Chemistry University of Sindh Jamshoro 76080 Pakistan
- Department of Chemistry Shaheed Benazir Bhutto University Shaheed Benazirabad 67450, Sindh Pakistan
| | - Aneela Tahira
- Division of Materials Science, Department of Engineering Sciences & Mathematics Luleå University of Technology 97187 Luleå Sweden
| | - Amber R. Solangi
- National Centre of Excellence in Analytical Chemistry University of Sindh Jamshoro 76080 Pakistan
| | - Raffaello Mazzaro
- Division of Materials Science, Department of Engineering Sciences & Mathematics Luleå University of Technology 97187 Luleå Sweden
- Institute for Microelectronics and Microsystems National Research Council Via Piero Gobetti 101 40129 Bologna Italy
| | - Zafar Hussain Ibupoto
- Division of Materials Science, Department of Engineering Sciences & Mathematics Luleå University of Technology 97187 Luleå Sweden
- Institute of Chemistry University of Sindh Jamshoro 76080, Sindh Pakistan
| | - Almas Fatima
- National Centre of Excellence in Analytical Chemistry University of Sindh Jamshoro 76080 Pakistan
| | - Alberto Vomiero
- Division of Materials Science, Department of Engineering Sciences & Mathematics Luleå University of Technology 97187 Luleå Sweden
- Department of Molecular Sciences and Nanosystems Ca' Foscari University of Venice Via Torino 155 30172 Venezia Mestre Italy
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Bhatti AL, Aftab U, Tahira A, Abro MI, Kashif samoon M, Aghem MH, Bhatti MA, HussainIbupoto Z. Facile doping of nickel into Co3O4 nanostructures to make them efficient for catalyzing the oxygen evolution reaction. RSC Adv 2020; 10:12962-12969. [PMID: 35492082 PMCID: PMC9051423 DOI: 10.1039/d0ra00441c] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [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: 01/15/2020] [Accepted: 03/16/2020] [Indexed: 11/25/2022] Open
Abstract
Designing a facile and low-cost methodology to fabricate earth-abundant catalysts is very much needed for a wide range of applications. Herein, a simple and straightforward approach was developed to tune the electronic properties of cobalt oxide nanostructures by doping them with nickel and then using them to catalyze the oxygen evolution reaction (OER) in an aqueous solution of 1.0 M KOH. The addition of a nickel impurity improved the conductivity of the cobalt oxide, and further increased its activity towards the OER. Analytical techniques such as scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS) and powder X-ray diffraction (XRD) were used to investigate, respectively, the morphology, composition and crystalline structure of the materials used. The nickel-doped cobalt oxide material showed randomly oriented nanowires and a high density of nanoparticles, exhibited the cubic phase, and contained cobalt, nickel and oxygen as its main elements. The nickel-doped cobalt oxide also yielded a Tafel slope of 82 mV dec−1 and required an overpotential of 300 mV to reach a current density of 10 mA cm−2. As an OER catalyst, it was shown to be durable for 40 h. Electrochemical impedance spectroscopy (EIS) analysis showed a low charge-transfer resistance of 177.5 ohms for the nickel-doped cobalt oxide, which provided a further example of its excellent OER performance. These results taken together indicated that nickel doping of cobalt oxide can be accomplished via a facile approach and that the product of this doping can be used for energy and environmental applications. Designing a facile and low-cost methodology to fabricate earth-abundant catalysts is very much needed for a wide range of applications.![]()
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Affiliation(s)
| | - Umair Aftab
- Mehran University of Engineering and Technology
- 7680 Jamshoro
- Pakistan
| | - Aneela Tahira
- Department of Science and Technology
- Campus Norrköping
- Linköping University
- SE-60174 Norrköping
- Sweden
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Mugheri AQ, Tahira A, Aftab U, Bhatti AL, Memon NN, Memon JUR, Abro MI, Shah AA, Willander M, Hullio AA, Ibupoto ZH. Efficient tri-metallic oxides NiCo 2O 4/CuO for the oxygen evolution reaction. RSC Adv 2019; 9:42387-42394. [PMID: 35542865 PMCID: PMC9076628 DOI: 10.1039/c9ra09351f] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [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: 11/10/2019] [Accepted: 12/11/2019] [Indexed: 01/15/2023] Open
Abstract
In this study, a simple approach was used to produce nonprecious, earth abundant, stable and environmentally friendly NiCo2O4/CuO composites for the oxygen evolution reaction (OER) in alkaline media. The nanocomposites were prepared by a low temperature aqueous chemical growth method. The morphology of the nanostructures was changed from nanowires to porous structures with the addition of CuO. The NiCo2O4/CuO composite was loaded onto a glassy carbon electrode by the drop casting method. The addition of CuO into NiCo2O4 led to reduction in the onset potential of the OER. Among the composites, 0.5 grams of CuO anchored with NiCo2O4 (sample 2) demonstrated a low onset potential of 1.46 V vs. a reversible hydrogen electrode (RHE). A current density of 10 mA cm-2 was achieved at an over-potential of 230 mV and sample 2 was found to be durable for 35 hours in alkaline media. Electrochemical impedance spectroscopy (EIS) indicated a small charge transfer resistance of 77.46 ohms for sample 2, which further strengthened the OER polarization curves and indicates the favorable OER kinetics. All of the obtained results could encourage the application of sample 2 in water splitting batteries and other energy related applications.
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Affiliation(s)
- Abdul Qayoom Mugheri
- Dr M. A. Kazi Institute of Chemistry, University of Sindh Jamshoro 76080 Sindh Pakistan
| | - Aneela Tahira
- Department of Science and Technology, Campus Norrkoping, Linkoping University SE-60174 Norrkoping Sweden
| | - Umair Aftab
- Mehran University of Engineering and Technology 7680 Jamshoro Sindh Pakistan
| | | | - Nusrat Naeem Memon
- Dr M. A. Kazi Institute of Chemistry, University of Sindh Jamshoro 76080 Sindh Pakistan
| | - Jamil-Ur-Rehman Memon
- Dr M. A. Kazi Institute of Chemistry, University of Sindh Jamshoro 76080 Sindh Pakistan
| | | | - Aqeel Ahmed Shah
- NED University of Engineering Science and Technology Karachi Sindh Pakistan
| | - Magnus Willander
- Department of Science and Technology, Campus Norrkoping, Linkoping University SE-60174 Norrkoping Sweden
| | - Ahmed Ali Hullio
- Dr M. A. Kazi Institute of Chemistry, University of Sindh Jamshoro 76080 Sindh Pakistan
| | - Zafar Hussain Ibupoto
- Dr M. A. Kazi Institute of Chemistry, University of Sindh Jamshoro 76080 Sindh Pakistan
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Mugheri AQ, Tahira A, Aftab U, Abro MI, Mallah AB, Memon GZ, Khan H, Abbasi MA, Halepoto IA, Chaudhry SR, Ibupoto ZH. An advanced and efficient Co 3O 4/C nanocomposite for the oxygen evolution reaction in alkaline media. RSC Adv 2019; 9:34136-34143. [PMID: 35529970 PMCID: PMC9073646 DOI: 10.1039/c9ra07224a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [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: 09/09/2019] [Accepted: 10/09/2019] [Indexed: 01/02/2023] Open
Abstract
The design of efficient nonprecious catalysts for the hydrogen evolution reaction (HER) or the oxygen evolution reaction (OER) is a necessary, but very challenging task to uplift the water-based economy. In this study, we developed a facile approach to produce porous carbon from the dehydration of sucrose and use it for the preparation of nanocomposites with cobalt oxide (Co3O4). The nanocomposites were studied by the powder X-ray diffraction and scanning electron microscopy techniques, and they exhibited the cubic phase of cobalt oxide and porous structure of carbon. The nanocomposites showed significant OER activity in alkaline media, and the current densities of 10 and 20 mA cm-2 could be obtained at 1.49 and 1.51 V versus reversible hydrogen electrode (RHE), respectively. The impedance study confirms favorable OER activity on the surface of the prepared nanocomposites. The nanocomposite is cost-effective and can be capitalized in various energy storage technologies.
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Affiliation(s)
- Abdul Qayoom Mugheri
- Dr M. A. Kazi Institute of Chemistry, University of Sindh Jamshoro 76080 Sindh Pakistan
| | - Aneela Tahira
- Department of Science and Technology, Campus Norrkoping, Linkoping University SE-60174 Norrkoping Sweden
| | - Umair Aftab
- Mehran University of Engineering and Technology 7680 Jamshoro Sindh Pakistan
| | - Muhammad Ishaq Abro
- Mehran University of Engineering and Technology 7680 Jamshoro Sindh Pakistan
| | - Arfana Begum Mallah
- Dr M. A. Kazi Institute of Chemistry, University of Sindh Jamshoro 76080 Sindh Pakistan
| | - Gulam Zuhra Memon
- Dr M. A. Kazi Institute of Chemistry, University of Sindh Jamshoro 76080 Sindh Pakistan
| | - Humaira Khan
- Dr M. A. Kazi Institute of Chemistry, University of Sindh Jamshoro 76080 Sindh Pakistan
| | - Mazhar Ali Abbasi
- Institute of Physics, University of Sindh Jamshoro 76080 Sindh Pakistan
| | | | | | - Zafar Hussain Ibupoto
- Dr M. A. Kazi Institute of Chemistry, University of Sindh Jamshoro 76080 Sindh Pakistan
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Mustafa E, Tahira A, Adam RE, Ibupoto ZH, Elhag S, Willander M, Nur O. Efficient Ni–Fe layered double hydroxides/ZnO nanostructures for photochemical water splitting. J SOLID STATE CHEM 2019. [DOI: 10.1016/j.jssc.2019.03.004] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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