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Materials 2015, 8(1), 149-161;

Synthesis of Co3O4 Cotton-Like Nanostructures for Cholesterol Biosensor

Department of Science and Technology, Campus Norrköping, Linköping University, SE-60174 Norrköping, Sweden
Dr. M.A. Kazi Institute of Chemistry, University of Sindh Jamshoro, Sindh 76080, Pakistan
Author to whom correspondence should be addressed.
Academic Editor: Jung Ho Je
Received: 10 October 2014 / Accepted: 23 December 2014 / Published: 31 December 2014
(This article belongs to the Section Structure Analysis and Characterization)
Full-Text   |   PDF [1422 KB, uploaded 31 December 2014]   |  


The use of templates to assist and possess a control over the synthesis of nanomaterials has been an attractive option to achieve this goal. Here we have used sodium dodecyl sulfate (SDS) to act as a template for the low temperature synthesis of cobalt oxide (Co3O4) nanostructures. The use of SDS has led to tune the morphology, and the product was in the form of “cotton-like” nanostructures instead of connected nanowires. Moreover, the variation of the amount of the SDS used was found to affect the charge transfer process in the Co3O4. Using Co3O4 synthesized using the SDS for sensing of cholesterol was investigated. The use of the Co3O4 synthesized using the SDS was found to yield an improved cholesterol biosensor compared to Co3O4 synthesized without the SDS. The improvement of the cholesterol sensing properties upon using the SDS as a template was manifested in increasing the sensitivity and the dynamic range of detection. The results achieved in this study indicate the potential of using template assisted synthesis of nanomaterials in improving some properties, e.g., cholesterol sensing. View Full-Text
Keywords: C3O4 nanostructures; surfactant; hydrothermal synthesis; potentiometric processes; cholesterol biosensor C3O4 nanostructures; surfactant; hydrothermal synthesis; potentiometric processes; cholesterol biosensor

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Elhag, S.; Ibupoto, Z.H.; Nour, O.; Willander, M. Synthesis of Co3O4 Cotton-Like Nanostructures for Cholesterol Biosensor. Materials 2015, 8, 149-161.

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