| 刘素芹,王静雯,戴高鹏,罗天雄,李常贵.化学通报,2015,78(6):547-551. |
| ZnO/石墨烯修饰电极的制备及电化学性能研究 |
| A novel BPA sensor based on ZnO-GO nanocomposite modified electrode |
| 投稿时间：2014-10-14 修订日期：2014-11-21 |
| DOI： |
| 中文关键词: 传感器 纳米氧化锌/氧化石墨烯 修饰电极 循环伏安法 双酚A |
| 英文关键词:sensor nano ZnO-graphene oxide modified electrode cyclic voltammetry bisphenol A |
| 基金项目:国家自然科学基金项目（No.51378183）湖北省科技厅项目（No.2012FFB01903）湖北省教育厅项目（No.Q20132608）湖北文理学院创新创业项目 |
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| 中文摘要: |
| 采用水热法合成了纳米氧化锌-氧化石墨烯复合材料, 并基于该复合材料构制了一种新型双酚A传感器，研究了该传感器的电化学行为。结果表明，在含8.0× 10- 5mol/L CTAB pH 7.0磷酸盐缓冲液中, 双酚A在0.573V处出现一个不可逆的氧化峰，具有良好的电化学响应；其氧化峰电流与浓度在1.0×10-8~4.0×10-5mol/L范围内呈良好的线性关系，检出限为5.0×10-9mol/L；对模拟环境水样中双酚A进行三次平行测定的回收率在96.3%~101.9%之间, 相对误差在1.2%~3.8%范围内。该传感器具有灵敏度高、线性范围宽的特点。 |
| 英文摘要: |
| ZnO-graphene oxide nano-composite was successfully synthesized by a hydrothermal method, and a new type of biosensor for bisphenol A detection was constructed. The electrochemical behavior of bisphenol A at the ZnO-graphene oxide modified glassy carbon electrode (ZnO-GO/GCE) was investigated by cyclic voltammetry( CV) in the presence of cetyl trimethyl ammonium bromide (CTAB). The results showed that bisphenol A exhibited a good electrochemical response at ZnO-GO/GCE in pH 7.0 phosphate buffer in the presence of 8.0×10-5mol/L CTAB, a irreversible oxidation peak can be observed at 0.573 V. For determination of bisphenol A on the ZnO-GO/GCE, the anodic peak currents were linear straingly with the concentration of bisphenol A in the range of 1.0×10-8~4.0×10-5mol/L, the detection limit is down to 5.0× 10-9mol/L. The recovery% for three parallel determination of bisphenol A in simulation environment water was between 96.3% and 101.9%, and the relative error in the range of 1.2% ~ 3.8%. The sensor has the characteristics of high sensitivity and wide linear range. |
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