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Applied Chemistry
+27 (0) 11 559 9060
3200C  John Orr Building
Prof Samuel Oluwatobi Oluwafemi

Primary Expertise:
Nanomaterials
Secondary Expertise:
Nanotechnology
NRF Rating:
Established researcher
Faculty:
Science
Campus:
DFC

UJ expert list: Physical Chemistry, Nanomaterials, Material Science

Highest qualification PhD
Field(s) of research Nanotechnology
Lecturing: Modules with short description

CET2A13- Inorganic Chemistry 2, CET2B15- INORGANIC CHEMISTRY 3,

FWCMB14- METALLURGICAL CHEMISTRY 1

List of publications (20 most recent)

Sneha Mohan, Fredrick Okumu, Oluwatobi Oluwafemi, Mangaka Matoetoe and Omotayo Arotiba (2016): Electrochemical Behaviour of Silver Nanoparticle-MWCNTs Hybrid Nanostructures Synthesized via a Simple Method.  Int. J. Electrochem. Sci. 11, 745 - 753 ISSN 1452-398

B. Ntsendwana , S. Sampath, B.B Mamba , O.S Oluwafemi and  O. A. Arotiba (2016): Photoelectrochemical Degradation of Eosin Yellowish Dye on Exfoliated Graphite-ZnO Nanocomposite Electrode. Journal of Material Science: Material in Electronic, 27, 592-598  ISSN: 1573-482X. 

El hadji Mamour Sakho, Oluwatobi S. Oluwafemi, Abhijit Saha, Sabu Thomas, and Nandakumar Kalarikkal (2016): Ultrasensitive Detection of a 1-Pyrenecarboxylic Acid by surface enhanced Raman scattering Hot Spot with reduced graphene oxide/silver nanoparticles composites. Materials letters, 171, 137-141 ISSN: 0167-577X.

Sneha Mohan, Oluwatobi. S. Oluwafemi, Sandile. P. Songca, V. P. Jayachandran, Didier Rouxel, Olivier Joubert, Nandakumar Kalarikkal and Sabu Thomas (2016): Synthesis,antibacterial, cytotoxicity and sensing properties of starch -capped silver nanoparticles. Journal of Molecular Liquids, 213, 75-81 ISSN: 0167-7322.

Nelisa Assistance Dyayiya , Idris Ajayi Oyemitan, Reuben Matewu, Opeoluwa Oyehan Oyedeji ,Samuel Oluwatobi Oluwafemi, Benedicta N Nkeh-Chungag, Sandile Phindile Songca and Adebola Omowunmi Oyedeji (2016): Chemical analysis and biological potential of valerian root as used by herbal practitioners in the eastern cape province, South Africa. Afr J Tradit  Complement Altern Med.  13(1):114-122 ISSN: 0189-6016.

Oluwatobi. S. Oluwafemi, Sneha Mohan, Oseyemi Olubomehin, Otolorin .A. Osibote,and Sandile. P. Songca (2016): Size tunable synthesis of HDA and TOPO capped ZnSe nanoparticles via a facile aqueous/thermolysis hybrid solution route. Journal of Material Science:  Material in Electronic, 27, 3880–3887, ISSN: 1573-482X.

Sneha Mohan, Oluwatobi. S Oluwafemi, Sandile P. Songca, Didier Rouxel, Patrice Miska, Francis B. Lewu , Nandakumar Kalarikkal and Sabu Thomas (2016): Completely green synthesis of silver nanoparticle decorated MWCNT and its antibacterial and catalytic properties. International Union of Pure and Applied Chemistry 88 (1-2): 71–81, ISSN: 1365-3075.

Sneha Mohan and Oluwatobi S Oluwafemi (2016): Simple synthesis of orange fluorescent CdSe -polycaprolactone nanofiber via a completely non-phosphine based route. Material letters, 174, 157–161, ISSN: 0167-577X.

Pameela Rungqu, Opeoluwa Oyedeji, Benedicta Nkeh-Chungag, Sandile Songca, Oluwatobi Oluwafemi and Adebola Oyedeji (2016): Anti-inflammatory activity of the essential oils of Cymbopogon validus (Stapf) Stapf ex Burtt Davy from Eastern Cape, South Africa.  Asian Pacific Journal of Tropical Medicine, 9 (5): 426–431 ISSN: 1995-7645. 

Herbert Chiguvare, Opeoluwa O. Oyedeji, Reuben Matew, Olukayode Aremu, Idris A. Oyemitan, Adebola O. Oyedeji, Benedicta N. Nkeh-Chungag, Sandile P. Songca, Sneha Mohan  and Oluwatobi S. Oluwafemi (2016): Synthesis of silver nanoparticles using buchu plant extracts and their analgesic properties. Molecules, 21, 774, doi:10.3390/molecules21060774. ISSN 1420-3049.

El hadji Mamour Sakho, Oluwatobi S. Oluwafemi, Sreekanth Perumbilavil,  Reji Philip, Kala M S, Sabu Thomas and  Nandakumar Kalarikkal (2016): Rapid and facile synthesis of graphene oxide quantum dots with good linear and nonlinear optical properties. Journal of Material Science:  Material in Electronic, DOI: 10.1007/s10854-016-5204-z. ISSN: 1573-482X. 

El hadji Mamour Sakho, Oluwatobi S. Oluwafemi, P.Sreekanth,  Reji Philip, Sabu Thomas and Nandakumar Kalarikkal (2016): Improved nonlinear optical and optical limiting properties in Non-Covalent Functionalized Reduced Graphene oxide /Silver Nanoparticle (NF-RGO/Ag-NPs) Hybrid. Optical Materials, 58, 476- 483. ISSN: 0925-3467.

Bambesiwe M. M. May and Oluwatobi S. Oluwafemi (2016): Sugar-Reduced Gelatin-Capped Silver Nanoparticles with High Selectivity for Colorimetric Sensing of Hg 2+ and Fe 2+ Ions in the Midst of Other Metal Ions in Aqueous Solutions.  Int. J. Electrochem. Sci. 11, 8096 – 8108. ISSN 1452-398.

Oluwatobi. S. Oluwafemi, Tanki Mochochoko, Anyik John Leo, Sneha Mohan, Denis.N.Jumbam and Sandile. P. Songca. (2016): Microwave irradiation synthesis of silver nanoparticles using cellulose from Eichhornia crassipes plant shoot. Material letters, 185, 576–579. ISSN: 0167-577X.

Siviwe Siviwe Stolom, Idris A Oyemitan, Reuben Matewu, Opeoluwa O Oyedeji, Samuel O Oluwafemi, Benedicta N Nkeh-Chungag, Sandile P Songca and Adebola O Oyedeji. (2016): Chemical and  bioological studies of Lobelia flaccida (C. Presl) A.DC leaf: a medicinal plant used by traditional healers in Eastern Cape, South Africa. Tropical Journal of Pharmaceutical Research; 15 (8) 1715-21 ISSN: 1596-5996. 

Miya Gugulethu Mathews, Oyemitan, Idris Ajayi, Oyedeji Oyehan Opeoluwa, Oluwafemi Samuel Oluwatobi, Nkeh-Chungag Benedicta N, Songca Sandile Phindile and Oyedeji  Adebola Omowumi (2016): Phytochemical screening, anti-inflammatory and analgesic properties of pentanisia prunelloides from the Eastern cape province, South Africa. Afr J Tradit Complement Altern Med. 13 (6):179-185.  ISSN: 0189-6016. 

Elhadji Mamour Sakho, Oluwatobi S. Oluwafemi, Sabu Thomas and Nandakumar Kalarikkal (2016): Dynamic energy transfer in non-covalently functionalized reduced graphene oxide/silver nanoparticle hybrid (NF-RGO/Ag) with NF-RGO as the donor material. Journal of Material Science:  Material in Electronic, DOI: 10.1007/s10854-016-5842-1. ISSN: 1573-482X. 

Sundararajan Parani, Giridharan Bupesh, Elayaperumal Manikandand, Kannaiyan Pandian, Oluwatobi Samuel Oluwafemi (2016): Facile synthesis of mercaptosuccinic acid-capped CdTe/CdS/ ZnS core/double shell quantum dots with improved cell viability on different cancer cells and normal cells. Journal of Nanoparticle research, 18, 347-359, ISSN: 1572-896X.

Rahul Mundiyaniyil Thankachan, Nidhin Joy, Jiji Abraham, Nandakumar Kalarikkal, Sabu Thomas and Oluwatobi Samuel  Oluwafemi (2017): Enhanced photocatalytic performance of ZnO nanostructures produced via a quick microwave assisted route for the degradation of rhodamine in aqueous solution. Materials Research Bulletin, 85, 131–139. ISSN: 0025-5408.

Vuyelwa Ncapayi⁠, Parani Sundararajan⁠a⁠, Sandile P. Songca⁠, Tetsuya Kodama⁠ and Oluwatobi S.Oluwafemi⁠ (2017): Simple green synthesis of amino acid functionalised CdTe/CdSe/ZnSe core-multi shell with improved cell viability for cellular imaging. Material letters, 189 168–171. ISSN: 0167- 577X.

Publications