Rajendra Kumar Reddy Gajjala, Kumar P Suresh
School of Chemical & Biotechnology, SASTRA University, Thanjavur, Tamilnadu, India.
School of Chemical & Biotechnology, SASTRA University, Thanjavur, Tamilnadu, India.
Mater Sci Eng C Mater Biol Appl. 2017 Jun 1;75:1480-1488. doi: 10.1016/j.msec.2017.02.125. Epub 2017 Mar 1.
We report on the facile electrodeposition of copper nanostructures on graphite lead substrate using anionic, cationic and non-ionic surfactant templates. Physical and electrochemical characterisation confirmed the influence of templates on the morphology and electrochemical catalytic activities of the copper electrodeposits. These electrodes were shown to be excellent electrocatalyst for the fast detection of hydrogen peroxide. A maximum sensitivity of 951.45μA/mM/cm, LOD of 0.43μM, response time of <1s and a linearity in wide range of concentration from 1μM to 5mM were observed when sodium dodecyl sulfate was used as the template. While most of the previously reported sensors have advantages either on the facile synthesis or fast detection of analyte, our methodology enables preparation of the electrode within 120s and analysis within another 60s without any complicated procedure, thereby demonstrating one of the fastest and cost-effective method for hydrogen peroxide analysis with high sensitivity and selectivity.
我们报道了使用阴离子、阳离子和非离子表面活性剂模板在石墨铅基底上轻松电沉积铜纳米结构的方法。物理和电化学表征证实了模板对铜电沉积物的形态和电化学催化活性的影响。这些电极被证明是用于快速检测过氧化氢的优异电催化剂。当使用十二烷基硫酸钠作为模板时，观察到最大灵敏度为951.45μA/mM/cm，检测限为0.43μM，响应时间<1s，并且在1μM至5mM的宽浓度范围内具有线性关系。虽然大多数先前报道的传感器在分析物的简便合成或快速检测方面具有优势，但我们的方法能够在120秒内制备电极，并在另外60秒内进行分析，无需任何复杂程序，从而证明了一种用于过氧化氢分析的最快且具有成本效益的方法，具有高灵敏度和选择性。
