Elhag Sami, Ibupoto Zafar Hussain, Nour Omer, Willander Magnus
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.
Materials (Basel). 2014 Dec 31;8(1):149-161. doi: 10.3390/ma8010149.
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.
使用模板来辅助并控制纳米材料的合成一直是实现这一目标的一个有吸引力的选择。在这里，我们使用十二烷基硫酸钠（SDS）作为模板，用于低温合成氧化钴（Co₃O₄）纳米结构。SDS的使用导致了形态的调整，产物呈“棉花状”纳米结构而非相连的纳米线形式。此外，发现所使用的SDS量的变化会影响Co₃O₄中的电荷转移过程。研究了使用以SDS合成的Co₃O₄进行胆固醇传感。结果发现，与未使用SDS合成的Co₃O₄相比，使用以SDS合成的Co₃O₄能产生性能更优的胆固醇生物传感器。以SDS作为模板时胆固醇传感性能的改善体现在灵敏度和检测动态范围的增加上。本研究取得的结果表明了使用模板辅助合成纳米材料在改善某些性能（如胆固醇传感）方面的潜力。
