College of Materials & Environmental Engineering, Hangzhou Dianzi University, Hangzhou, 310018, P. R. China.
Research Center of Analysis and Measurement, Zhejiang University of Technology, Hangzhou, 310018, P. R. China.
J Nanosci Nanotechnol. 2020 Sep 1;20(9):5539-5545. doi: 10.1166/jnn.2020.17857.
A convenient and simple phenol electrochemical sensor was constructed based on the Au/CeO₂/ g-C₃N₄ nanocomposites, which were obtained by loading the gold-cerium oxide (Au/CeO₂) nanoparticle on graphite-like carbon nitride (g-C₃N₄) through precipitation-reduction methods. The microstructure and morphology of Au/CeO₂/g-C₃N₄ nanocomposite were verified using different techniques such as XRD, TEM, and HRTEM. Voltammetry and amperometry methods were used to study the electrochemical performance of the constructed phenol electrochemical sensors. The results demonstrated evidently that the combination of Au/CeO₂ and g-C₃N₄ may improve sensing performances of phenol determination. The detection linear range of the sensor was 10-90 M under the optimum parameters. The Au/CeO₂/g-C₃N₄ based electrochemical sensor also has low detection limits (2.33 M) and high sensitivities (0.1080 mA/M) for phenol detection. In addition, the sensor also had considerably favorable anti-interference performance. As a consequence, the sensor demonstrated that the electrochemical system provided a promising effective strategy for detection of phenol.
基于 Au/CeO₂/g-C₃N₄ 纳米复合材料构建了一种方便、简单的酚电化学传感器，该复合材料是通过沉淀还原法将金-氧化铈（Au/CeO₂）纳米颗粒负载在类石墨相氮化碳（g-C₃N₄）上得到的。采用 XRD、TEM 和 HRTEM 等不同技术对 Au/CeO₂/g-C₃N₄ 纳米复合材料的微观结构和形貌进行了验证。使用伏安法和安培法研究了构建的酚电化学传感器的电化学性能。结果表明，Au/CeO₂ 和 g-C₃N₄ 的结合可能会改善酚测定的传感性能。在最佳参数下，传感器的检测线性范围为 10-90 M。基于 Au/CeO₂/g-C₃N₄ 的电化学传感器对苯酚的检测也具有较低的检测限（2.33 M）和较高的灵敏度（0.1080 mA/M）。此外，该传感器还具有相当优异的抗干扰性能。因此，该传感器表明电化学系统为检测酚类提供了一种很有前途的有效策略。
