Zobrazeno 1 - 10
of 24
pro vyhledávání: '"Sibulelo Vilakazi"'
Autor:
Phumlani Tetyana, Ntsoaki Mphuthi, Abongile Nwabisa Jijana, Nosipho Moloto, Poslet Morgan Shumbula, Amanda Skepu, Lea Sibulelo Vilakazi, Lucky Sikhwivhilu
Publikováno v:
Nanomaterials, Vol 13, Iss 3, p 481 (2023)
Glutathione-capped copper sulfide (CuxSy) nanoparticles with two different average sizes were successfully achieved by using a simple reduction process that involves only changing the reaction temperature. Temperature-induced changes in the size of C
Externí odkaz:
https://doaj.org/article/e64f5886652647d3ac3322a45364c138
Publikováno v:
Electrocatalysis. 12:310-325
An ultrasensitive electrochemical sensor to detect arsenic (III), a highly toxic heavy metal ion, has been successfully developed. The sensing platform composed of L-cysteine (Lcyst) molecules conjugated to reduced lipoic acid (rLA) capped gold nanop
Publikováno v:
South African Journal of Chemistry, Volume: 72, Pages: 207-214, Published: 2019
A dopamine (DA) colorimetric probe based on the growth and aggregation of un-functionalized gold nanoparticles (AuNPs) is reported. Upon addition of AuNPs to dopamine at various concentrations, the shape, size and colour change of the nanoparticles r
Publikováno v:
Materials Today: Proceedings. 2:4060-4069
An easily prepared solid state colorimetric probe for detecting the neurotransmitter dopamine (DA) was developed. The probe, in the form of an electrospun Nylon−6 (N6) nanofibre with embedded un−functionalized gold nanoparticles (UF−AuNPs) prod
Autor:
Mawethu Pascoe Bilibana, Robert Tshikhudo, Nazeem Jaheed, Nurali Mohamed, Njagi Njomo, Abebaw Tsegaye, Hlamulo Makelane, Oluwakemi Tovide, Avril Williams, Emmanuel I. Iwuoha, Ezo Nxusani, Sibulelo Vilakazi, Christopher E. Sunday, Rachel Fanelwa Ajayi, Priscilla G. L. Baker
Publikováno v:
Electrochimica Acta. 128:138-148
A graphenated polyaniline/tungsten oxide (PANI/WO 3 /GR) nanocomposite sensor was prepared by electropolymerisation of a mixture of aniline monomer and tungsten oxide on a graphene-modified glassy carbon electrode (GCE). The PANI/WO 3 /GR/GCE nanocom
Autor:
Chinwe O. Ikpo, Avril Williams, Kerileng M. Molapo, Sibulelo Vilakazi, Robert Tshikhudo, Tesfaye Waryo, Priscilla G. L. Baker, Bulelwa Mpushe, Gertrude Fomo, Christopher E. Sunday, Sinazo Qakala, Gcineka Mbambisa, Emmanuel I. Iwuoha, Mawethu Pascoe Bilibana, Oluwakemi Tovide
Publikováno v:
Electrochimica Acta. 128:128-137
Charge transfer reactions of electroactive reagents in pure Nafion film are generally slow due to Nafion's compact nature and the poor diffusion of ionic species within the film. Cationic reagents, such as tris(bipyridine)ruthenium(II) ion ([Ru(bpy)3
Autor:
Anne Lutgarde Djoumessi Yonkeu, Tesfaye Waryo, Kerileng M. Molapo, Nazeem Jahed, Njagi Njomo, Sibulelo Vilakazi, Abebaw Tsegaye, Gertrude Fomo, Robert Tshikhudo, Hlamulo Makelane, Priscilla G. L. Baker, Xolile Fuku, Gcineka Mbambisa, Abd Almonam Baleg, Emmanuel I. Iwuoha
Publikováno v:
Electrochimica Acta. 128:448-457
A novel generation 2 poly(propylene imine)-co-polypyrrole conducting dendrimeric star copolymer (G2PPI-co-PPy) was synthesised electrochemically by oxidative copolymerization of pyrrole and pyrrole-functionalised dendrimer (G2PPI-2Py) in LiClO4 NMR s
Autor:
Rachel Fanelwa Ajayi, Priscilla G. L. Baker, Samantha F. Douman, Sibulelo Vilakazi, Usisipho Feleni, Unathi Sidwaba, Robert Tshikhudo, Emmanuel I. Iwuoha
Publikováno v:
Nano Hybrids. 6:59-73
Pyrazinamine (PZA) is one of the most commonly prescribed anti-tuberculosis (anti-TB) drug due to its ability to significantly shorten the TB treatment period. However, excess PZA in the body causes hepatotoxicity and liver damage. This, therefore, c
Publikováno v:
Microchimica Acta. 181:395-401
We report on a colorimetric probe based on copper-gold alloy nanoparticles (NPs). The probe is capable of selectively detecting ascorbic acid (AA) as a result of the distance-dependent colour change of the nanoparticles immobilized in an electrospun
Publikováno v:
Biosensors and Bioelectronics. 49:32-38
The detection of measles-specific primary antibodies (IgG) using electrochemical impedimetric immunosensors is reported. The optimum conditions for electrode saturation were reached after 40 min for 1 μg ml−1 antibody concentrations. Surface rough