Institute for Nanotechnology and Water Sustainability

Dr NN Gumbi

College of Science, Engineering and Technology
Institute for Nanotechnology and Water Sustainability
Senior Lecturer
Tel: 0114713641
E-mail: gumbinn@unisa.ac.za

Qualifications

  • Ph.D. Chemistry (University of South Africa, South Africa, 2020)
  • MSc. Nanoscience (University of Johannesburg, South Africa, 2015)

Fields of academic interests

  • Membrane synthesis and application processes (Ultrafiltration, Nanofiltration and Reverse osmosis)
  • Nanomaterial synthesis and characterization
  • Water treatment

Field of Specialisation

  • Membrane Science and Technology
  • Nanotechnology
  • Desalination

Journal articles

  1. C.N Matindi, M. Hu, S. Kadanyo, Q. Viet Ly, N.N. Gumbi, D.S. Dlamini, J. Li, Y. Hu, Z. Cui, J. Li, Tailoring the morphology of polyethersulfone/sulfonated polysulfone ultrafiltration membranes for highly efficient separation of oil-in-water emulsions using TiO2 nanoparticles, Journal of Membrane Science, 620 (2021) 118868. https://doi.org/10.1016/j.memsci.2020.118868

  1. N.N. Gumbi, J. Li, B.B. Mamba, E.N. Nxumalo, Relating the performance of sulfonated thin-film composite nanofiltration membranes to structural properties of macrovoid-free polyethersulfone/sulfonated polysulfone/O-MWCNT supports, Desalination, 474 (2020) 114176.https://doi.org/10.1016/j.desal.2019.114176

  1. J. Li, Z. Cui, R. Tao, S. Yang, M. Hu, C. Matindi, N.N. Gumbi, X. Ma, Y. Hu, K. Fang, J. Li, Tailoring polyethersulfone/quaternary ammonium polysulfone ultrafiltration membrane with positive charge for dye and salt selective separation, Journal of Polymer Science, 58 (2020) 2603-2618. https://doi.org/10.1002/pol.20200028

  1. N.N. Gumbi, M. Hu, B.B. Mamba, J. Li, E.N. Nxumalo, Macrovoid-free PES/SPSf/O-MWCNT ultrafiltration membranes with improved mechanical strength, antifouling and antibacterial properties, Journal of Membrane Science, 566 (2018) 288-300. https://doi.org/10.1016/j.memsci.2018.09.009

  1. N.N. Gumbi, T.G. Tshabalala, S.D. Mhlanga, B.B. Mamba, A.I. Schäfer, E.N. Nxumalo, Chapter 8 - Prospects and State-of-the-Art of Carbon Nanotube Membranes in Desalination Processes A2 - Arafat, Hassan A, in: Desalination Sustainability, Elsevier, 2017, pp. 305-339. https://doi.org/10.1016/B978-0-12-809791-5.00008-0

  1. K. Yokwana, N. Gumbi, F. Adams, S. Mhlanga, E. Nxumalo, B. Mamba, Development of functionalized doped carbon nanotube/polysulfone nanofiltration membranes for fouling control, Journal of Applied Polymer Science, 132 (2015). https://doi.org/10.1002/app.41835

Other