A Novel developments of ZnO/SiO2 nanocomposite: a nanotechnological approach towards insect vector control



  • Ezra Abba Department of Zoology, Faculty of Science, Gombe State University
  • Zaccheus Shehu Chemistry Department, Faculty of Science, Gombe State University, Gombe, PMB 127, Gombe, Nigeria; Department of Chemistry, College of Natural Science, Makerere University, P.O. Box 7062, Kampala
  • Wilson Lamayi Danbature Chemistry Department, Faculty of Science, Gombe State University, Gombe, Nigeria
  • Kennedy Poloma Yoriyo Department of Zoology, Faculty of Science, Gombe State University, Gombe, Nigeria
  • Rifkatu Dogara Kambel Chemistry Department, Faculty of Science, Gombe State University, Gombe, Nigeria
  • Charles Nsor Ayuk Department of Zoology, Faculty of Science, Gombe State University, Gombe, PMB 127, Nigeria


Culex quinquefasciatus, Vector control, Nanotechnological, ZnO@SiO2 nanocomposite


Recently, there is increasing efforts to develop newer and effective larvicides to control mosquito vectors. This study was carried out to examine the efficacy of ZnO/SiO2 nanocomposite synthesized using Gum Arabic against Culex quinquefasciatus larvae. The elemental composition, morphology, functional groups and surface plasmon resonance of the ZnO@SiO2 nanocomposite was analyzed by Energy dispersive X-ray analysis (EDX), Scanning electron microscope (SEM), FTIR and UV-Visible spectroscopy respectively. In bioassay, larvae were exposed to three different concentrations of synthesized ZnO/SiO2 nanocomposite. The mortality rates at concentrations of 10, 20 and 25 were found to be (70%, 80%, 86%), (56%, 64%, 84%) and (44%, 48%, 76%) for 1st, 2nd, and 3rd instar respectively. This study revealed that the synthesized ZnO@SiO2 nanocomposite exhibit high larvicidal activity; 1st instar (LC50=4.024, LC90= 39.273 mg/l), 2nd instar (LC50=8.767, LC90=51.069 mg/l) and 3rd instar (LC50=13.761.LC90=81.809 mg/l).


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How to Cite

Abba, E., Shehu, Z., Lamayi Danbature, W. ., Poloma Yoriyo, K., Dogara Kambel , R., & Nsor Ayuk, C. (2021). A Novel developments of ZnO/SiO2 nanocomposite: a nanotechnological approach towards insect vector control. Journal of the Nigerian Society of Physical Sciences, 3(3), 262–266. https://doi.org/10.46481/jnsps.2021.198



Original Research