泡沫镍负载 Cu/CuO 微纳结构的制备及其对抗坏血酸的检测研究
Synthesis of Ni Foam-Modified Cu/CuO Micro/Nanostructures and Their Application in AA Detection
-
摘要: 利用水热法制备了高电活性的泡沫镍负载Cu/CuO微纳结构 ,形貌与成分分析表明 ,该电极材料从内到外共包含泡沫镍基体、Cu微米颗粒层和CuO纳米结构层三层结构 .电化学测试发现该复合材料在碱性介质中对抗坏血酸具有很好的电催化氧化特性 ,其灵敏度达到6.14 mA/(mmol/L · cm2 ) ,探测范围为1~2.5 mmol/L .Abstract: Cu/CuO micro/nanostructures were fabricated on the surface of porous Ni foam by the hydro-thermal method .The products were characterized by XRD ,SEM and EDS .The results revealed that the materials produced were composed of three parts :the Ni foam ,the Cu microparticles and CuO nanostruc-tures .Electrochemical analysis showed that this composite material displayed excellent electrochemical sensitivity and rapid response in detecting AA (ascorbic acid) in an alkaline medium .The sensitivity of the biosensor was found to be 6 .14 mA/(mmol/L · cm2 ) .The linear range for the detection was 1.0 μmol/L to 2.5 mmol/L .
-
Key words:
- Ni foam,nanostructure,hydro-thermal method,sensor /
-
-
计量
- 文章访问数: 690
- HTML全文浏览数: 344
- PDF下载数: 83
- 施引文献: 0