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Mugheri AQ, Ali K, Sangah AA, Khaskheli MI, Laghari MY, Mugheri NA, Soomro MR, Chohan MI, Mugheri AA, Kandhro A. A novel concept and design for highly efficient photoelectrocatalytic materials with high performance, stability, and charge transport properties: development of an innovative next-generation green technology. RSC Adv 2024; 14:1581-1592. [PMID: 38179100 PMCID: PMC10766073 DOI: 10.1039/d3ra05126a] [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: 08/01/2023] [Accepted: 12/07/2023] [Indexed: 01/06/2024] Open
Abstract
In semiconductors, generating charges via catalysis is a highly challenging task and characteristic of heterojunction photoanodes. A dithiophene-4,8-dione spin-coated film layer has a positive effect on the holes (positive charge carriers) for a long time in BHJ films in the solid state of materials. The photoexcited holes created in the BHJ film can persist for long periods of time, which is beneficial for catalytic reactions. In this study, a photoanode is electrically coupled to a hydrogen gas-evolving platinum cathode. When the photoanode is electrically coupled to a H2 gas evolving Pt cathode, curiously long-lived hole polaron states are observed on the timescale of seconds under operational conditions. These long-lived holes play a crucial role in enhancing the hydrogen peroxide oxidation performance of the film overlayer spin-coated onto the photoanode. The spin-coated film overlayer on the photoanode achieves the best oxidation performance for hydrogen peroxide of approximately 6.5 mA cm-2 at 1.23 VRHE without the need of a catalyst. This demonstrates the effectiveness of the overlayer in improving the catalytic performance of the photoanode with a better efficiency of 17.5% when using 851 nm excitation. This indicates that a relatively high percentage of incident photons at that specific wavelength is converted into photocurrent by the photoanode. This approach can lead to more efficient oxidation catalysis as demonstrated in the case of hydrogen peroxide oxidation.
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Affiliation(s)
- Abdul Qayoom Mugheri
- Dr M. A Kazi Institute of Chemistry, University of Sindh Jamshoro 76080 Sindh Pakistan
| | - Kashif Ali
- Hunan Key Laboratory for Super Microstructure and Ultrafast Process, School of Physics and Electronics, Central South University Changsha 410083 China
| | - Ali Asghar Sangah
- Department of Basic Sciences and Related Studies, Mehran University of Engineering and Technology Jamshoro 76080 Pakistan
| | | | - Muhammad Younis Laghari
- The Department of Fisheries and Aquatic Sciences, University of Sindh Jamshoro 76080 Sindh Pakistan
| | - Nadeem Ahmed Mugheri
- Dr M. A Kazi Institute of Chemistry, University of Sindh Jamshoro 76080 Sindh Pakistan
| | - Muhammad Rajib Soomro
- Dr M. A Kazi Institute of Chemistry, University of Sindh Jamshoro 76080 Sindh Pakistan
| | | | - Arsalan Ahmed Mugheri
- Dr M. A Kazi Institute of Chemistry, University of Sindh Jamshoro 76080 Sindh Pakistan
| | - Aftab Kandhro
- Dr M. A Kazi Institute of Chemistry, University of Sindh Jamshoro 76080 Sindh Pakistan
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2
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Pirzada LA, Mugheri AQ, Ghanghro S, Pirzada AH, Ibupoto MH, Ahmed K. Self‐supported bimetallic based materials deeply self‐reconstructing electrocatalysts for advances in hydrogen production. J CHIN CHEM SOC-TAIP 2022. [DOI: 10.1002/jccs.202200114] [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: 11/10/2022]
Affiliation(s)
- Luqman Ahmed Pirzada
- Laser Manufacturing Engineering College of Mechanical and Electric Engineering, Soochow University Suzhou China
| | - Abdul Qayoom Mugheri
- Dr. M.A Kazi Institute of Chemistry, University of Sindh Jamshoro Jamshoro Pakistan
| | - Sahib Ghanghro
- Department of Botany Shah Abdul Latif University Khairpur Mir's, Sindh Pakistan
| | - Ashaque Hussain Pirzada
- Department of Chemical Engineering Mehran University of Engineering and Technology Sindh Pakistan
| | | | - Kashif Ahmed
- Department of Zoology Shah Abdul Latif University Khairpur Mir's Sindh Pakistan
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3
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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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Mugheri AQ, Qamer SF, Otho AA, Mahmoud MH, Fouad H, Akhtar MS. The coupled electrocatalyst synergy fabrication for the electrochemical oxygen evolution reaction: From electrode to green energy system. J CHIN CHEM SOC-TAIP 2022. [DOI: 10.1002/jccs.202200038] [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: 11/12/2022]
Affiliation(s)
- Abdul Qayoom Mugheri
- Dr. M.A. Kazi Institute of Chemistry, University of Sindh Jamshoro Jamshoro Pakistan
| | | | - Aijaz Ali Otho
- Institute of Plant Sciences, University of Sindh Jamshoro Pakistan
| | - Mohamed H. Mahmoud
- Department of Biochemistry, College of Science King Saud University Riyadh Saudi Arabia
| | - Hassan Fouad
- Biomedical Engineering Department, Faculty of Engineering Helwan University Cairo Egypt
| | - M. Shaheer Akhtar
- New & Renewable Energy Material Development Center (New REC) Jeonbuk National University Jeonju‐si Republic of Korea
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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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6
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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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Mugheri AQ, Sangah AA, otho A, Memon SA, Mahmoud KH, El‐Bahy ZM. Efficient
Mn‐Ni‐Co
nanocomposite–based electrocatalyst for oxygen evolution reaction in alkaline media. J CHIN CHEM SOC-TAIP 2021. [DOI: 10.1002/jccs.202100386] [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: 11/09/2022]
Affiliation(s)
| | - Ali Asghar Sangah
- Department of Basic Sciences and Related Studies Mehran University of Engineering and Technology Jamshoro Pakistan
| | - Aijaz otho
- Institute of Plant Sciences University of Sindh Jamshoro Pakistan
| | | | - Khaled H. Mahmoud
- Department of Physics College of Khurma University College, Taif University Taif Saudi Arabia
| | - Zeinhom M. El‐Bahy
- Department of Chemistry Faculty of Science, Al‐Azhar University Cairo Egypt
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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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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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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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Mugheri AQ, Otho AA, Mugheri AA. Hierarchical fibrous bimetallic electrocatalyst based on ZnO-MoS2 composite nanostructures as high performance for hydrogen evolution reaction. J Electroanal Chem (Lausanne) 2021. [DOI: 10.1016/j.jelechem.2021.115061] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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15
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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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Mugheri AQ, Tahira A, Aftab U, Abro MI, Chaudhry SR, Amaral L, Ibupoto ZH. Facile efficient earth abundant NiO/C composite electrocatalyst for the oxygen evolution reaction. RSC Adv 2019; 9:5701-5710. [PMID: 35515914 PMCID: PMC9060904 DOI: 10.1039/c8ra10472g] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [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: 12/21/2018] [Accepted: 02/09/2019] [Indexed: 12/13/2022] Open
Abstract
Due to the increasing energy consumption, designing efficient electrocatalysts for electrochemical water splitting is highly demanded. In this study, we provide a facile approach for the design and fabrication of efficient and stable electrocatalysts through wet chemical methods. The carbon material, obtained by the dehydration of sucrose sugar, provides high surface area for the deposition of NiO nanostructures and the resulting NiO/C catalysts show higher activity towards the OER in alkaline media. During the OER, a composite of NiO with 200 mg C can produce current densities of 10 and 20 mA cm-2 at a bias of 1.45 V and 1.47 V vs. RHE, respectively. Electrochemical impedance spectroscopy experiments showed the lowest charge transfer resistance and the highest double layer capacitance in the case of the NiO/C composite with 200 mg C. The presence of C for the deposition of NiO nanostructures increases the active centers and consequently a robust electrocatalytic activity is achieved. The obtained results in terms of the low overpotential and small Tafel slope of 55 mV dec-1 for non-precious catalysts are clear indications for the significant advancement in the field of electrocatalyst design for water splitting. This composite material based on NiO/C is simple and scalable for widespread use in various applications, especially in supercapacitors and lithium-ion batteries.
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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, Linkoping University Campus Norrkoping 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
| | | | - Luís Amaral
- University of Engineering and Technology Lahore Pakistan
- Center of Physics and Engineering of Advanced Materials (CeFEMA), Instituto Superior Técnico, Universidade de Lisboa 1049-001 Lisbon Portugal
| | - 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, Sirajuddin ., Sherazi STH, Abro MI, Willander M, Ibupoto ZH. An Amperometric Indirect Determination of Heavy Metal Ions Through Inhibition of Glucose Oxidase Immobilized on Cobalt Oxide Nanostructures. ACTA ACUST UNITED AC 2016. [DOI: 10.1166/sl.2016.3752] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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