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Ravele T, Fuku XG, Hlongwa NW, Nkambule TTI, Gumbi NN, Sekhosana KE. Advances in Electrochemical Systems for Detection of Anti‐Androgens in Water Bodies. ChemistrySelect 2023. [DOI: 10.1002/slct.202203768] [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: 02/16/2023]
Affiliation(s)
- Thompho Ravele
- Institute for Nanotechnology and Water Sustainability (iNanoWS) College of Science Engineering and Technology (CSET) University of South Africa Cnr Christiaan De Wet and Pioneer Avenue, Florida Roodepoort 1709 South Africa
| | - Xolile G. Fuku
- Institute for Nanotechnology and Water Sustainability (iNanoWS) College of Science Engineering and Technology (CSET) University of South Africa Cnr Christiaan De Wet and Pioneer Avenue, Florida Roodepoort 1709 South Africa
| | - Ntuthuko W. Hlongwa
- Institute for Nanotechnology and Water Sustainability (iNanoWS) College of Science Engineering and Technology (CSET) University of South Africa Cnr Christiaan De Wet and Pioneer Avenue, Florida Roodepoort 1709 South Africa
| | - Thabo T. I. Nkambule
- Institute for Nanotechnology and Water Sustainability (iNanoWS) College of Science Engineering and Technology (CSET) University of South Africa Cnr Christiaan De Wet and Pioneer Avenue, Florida Roodepoort 1709 South Africa
| | - Nozipho N. Gumbi
- Institute for Nanotechnology and Water Sustainability (iNanoWS) College of Science Engineering and Technology (CSET) University of South Africa Cnr Christiaan De Wet and Pioneer Avenue, Florida Roodepoort 1709 South Africa
| | - Kutloano E. Sekhosana
- Institute for Nanotechnology and Water Sustainability (iNanoWS) College of Science Engineering and Technology (CSET) University of South Africa Cnr Christiaan De Wet and Pioneer Avenue, Florida Roodepoort 1709 South Africa
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Hlongwa NW, Ikpo CO, Ndipingwi MM, Nolly C, Raleie N, Dywili N, Iwuoha EI. Graphene‐functionalised Olivine Lithium Manganese Phosphate Derivatives for High Performance Lithium‐ion Capacitors. ELECTROANAL 2020. [DOI: 10.1002/elan.202060316] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [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)
- Ntuthuko W. Hlongwa
- SensorLab (University of the Western Cape Sensor Laboratories), Chemical Sciences Building Robert Sobukwe Road, Bellville 7535 Cape Town South Africa
| | - Chinwe O. Ikpo
- SensorLab (University of the Western Cape Sensor Laboratories), Chemical Sciences Building Robert Sobukwe Road, Bellville 7535 Cape Town South Africa
| | - Miranda M. Ndipingwi
- SensorLab (University of the Western Cape Sensor Laboratories), Chemical Sciences Building Robert Sobukwe Road, Bellville 7535 Cape Town South Africa
| | - Christopher Nolly
- SensorLab (University of the Western Cape Sensor Laboratories), Chemical Sciences Building Robert Sobukwe Road, Bellville 7535 Cape Town South Africa
| | - Naledi Raleie
- SensorLab (University of the Western Cape Sensor Laboratories), Chemical Sciences Building Robert Sobukwe Road, Bellville 7535 Cape Town South Africa
| | - Nomxolisi Dywili
- SensorLab (University of the Western Cape Sensor Laboratories), Chemical Sciences Building Robert Sobukwe Road, Bellville 7535 Cape Town South Africa
| | - Emmanuel I. Iwuoha
- SensorLab (University of the Western Cape Sensor Laboratories), Chemical Sciences Building Robert Sobukwe Road, Bellville 7535 Cape Town South Africa
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Ndipingwi MM, Ikpo CO, Hlongwa NW, Dywili N, Djoumessi Yonkeu AL, Iwuoha EI. Crystal chemistry and lithium-ion intercalation properties of lithium manganese silicate cathode for aqueous rechargeable Li-ion batteries. J APPL ELECTROCHEM 2019. [DOI: 10.1007/s10800-019-01296-0] [Citation(s) in RCA: 4] [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: 11/29/2022]
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Dywili NR, Ntziouni A, Ikpo C, Ndipingwi M, Hlongwa NW, Yonkeu ALD, Masikini M, Kordatos K, Iwuoha EI. Graphene Oxide Decorated Nanometal-Poly(Anilino-Dodecylbenzene Sulfonic Acid) for Application in High Performance Supercapacitors. Micromachines (Basel) 2019; 10:E115. [PMID: 30754698 PMCID: PMC6412443 DOI: 10.3390/mi10020115] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [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: 12/01/2018] [Revised: 02/04/2019] [Accepted: 02/06/2019] [Indexed: 12/02/2022]
Abstract
Graphene oxide (GO) decorated with silver (Ag), copper (Cu) or platinum (Pt) nanoparticles that are anchored on dodecylbenzene sulfonic acid (DBSA)-doped polyaniline (PANI) were prepared by a simple one-step method and applied as novel materials for high performance supercapacitors. High-resolution transmission electron microscopy (HRTEM) and high-resolution scanning electron microscopy (HRSEM) analyses revealed that a metal-decorated polymer matrix is embedded within the GO sheet. This caused the M/DBSA⁻PANI (M = Ag, Cu or Pt) particles to adsorb on the surface of the GO sheets, appearing as aggregated dark regions in the HRSEM images. The Fourier transform infrared (FTIR) spectroscopy studies revealed that GO was successfully produced and decorated with Ag, Cu or Pt nanoparticles anchored on DBSA⁻PANI. This was confirmed by the appearance of the GO signature epoxy C⁻O vibration band at 1040 cm-1 (which decreased upon the introduction of metal nanoparticle) and the PANI characteristic N⁻H stretching vibration band at 3144 cm-1 present only in the GO/M/DBSA⁻PANI systems. The composites were tested for their suitability as supercapacitor materials; and specific capacitance values of 206.4, 192.8 and 227.2 F·g-1 were determined for GO/Ag/DBSA⁻PANI, GO/Cu/DBSA⁻PANI and GO/Pt/DBSA⁻PANI, respectively. The GO/Pt/DBSA⁻PANI electrode exhibited the best specific capacitance value of the three electrodes and also had twice the specific capacitance value reported for Graphene/MnO₂//ACN (113.5 F·g-1). This makes GO/Pt/DBSA⁻PANI a very promising organic supercapacitor material.
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Affiliation(s)
- Nomxolisi R Dywili
- SensorLab, Department of Chemistry, University of the Western Cape, Private Bag X17, Bellville, 7535, Cape Town, South Africa.
- School of Chemical Engineering, Section I: Chemical Sciences, Lab of Inorganic and Analytical Chemistry, National Technical University of Athens, 9 Heroon Polytechniou Str., 15773 Athens, Greece.
| | - Afroditi Ntziouni
- School of Chemical Engineering, Section I: Chemical Sciences, Lab of Inorganic and Analytical Chemistry, National Technical University of Athens, 9 Heroon Polytechniou Str., 15773 Athens, Greece.
| | - Chinwe Ikpo
- SensorLab, Department of Chemistry, University of the Western Cape, Private Bag X17, Bellville, 7535, Cape Town, South Africa.
| | - Miranda Ndipingwi
- SensorLab, Department of Chemistry, University of the Western Cape, Private Bag X17, Bellville, 7535, Cape Town, South Africa.
| | - Ntuthuko W Hlongwa
- SensorLab, Department of Chemistry, University of the Western Cape, Private Bag X17, Bellville, 7535, Cape Town, South Africa.
| | - Anne L D Yonkeu
- SensorLab, Department of Chemistry, University of the Western Cape, Private Bag X17, Bellville, 7535, Cape Town, South Africa.
| | - Milua Masikini
- SensorLab, Department of Chemistry, University of the Western Cape, Private Bag X17, Bellville, 7535, Cape Town, South Africa.
| | - Konstantinos Kordatos
- School of Chemical Engineering, Section I: Chemical Sciences, Lab of Inorganic and Analytical Chemistry, National Technical University of Athens, 9 Heroon Polytechniou Str., 15773 Athens, Greece.
| | - Emmanuel I Iwuoha
- SensorLab, Department of Chemistry, University of the Western Cape, Private Bag X17, Bellville, 7535, Cape Town, South Africa.
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