A high sensitive electrochemical sensor was designed for the real time detection of dopamine (DA) and uric acid (UA) by using the Nanocomposite (NC) of reduced graphene oxide nano-octahedral shaped Mn₃O₄ modified Glassy Carbon Electrode (rGO/Mn₃O₄/GCE). The effect of Mn₃O₄ on the electrochemical and physical properties of rGO/Mn₃O₄ NC by Mn₃O₄ contents was analyzed by varying the molar ratio of Mn precursor (1, 5 and 10 mM denoted as GM_1:1, GM_1:5 and GM_1:10 respectively). Due to the unique morphology and physical properties originated from Mn₃O₄, GM_1:10/GCE revealed enhanced electrochemical response in terms of large peak potential separation, high selectivity and sensitivity. The GM_1:10/GCE displayed a distinct SWV response to DA and UA for 1–600 μM at lowest detection limit of 1.42 μM and 0.76 μM. Additionally, anti-interference property of the designed sensor against electroactive molecules is found to be excellent stability and good reproducibility. Finally, it was make use for the detection of DA and UA in the pharmaceutical compound and physiological residue.

使用还原氧化石墨烯纳米八面体形 Mn ₃ O ₄改性玻碳电极（rGO/Mn ₃ O ₄ /GCE)。Mn的效果₃ ö ₄上RGO的电化学性能和物理性能/ Mn为₃ ö ₄的Mn NC _3项ö ₄分析内容通过改变锰的前体（1,5的摩尔比和10mM表示为GM _1:1 , 通用_1:5和通用_1:10分别）。由于源自 Mn ₃ O ₄的独特形态和物理性质，GM _1:10 /GCE 在大峰电位分离、高选择性和灵敏度方面显示出增强的电化学响应。GM _1:10 /GCE 在 1.42 μM 和 0.76 μM 的最低检测限下对 1–600 μM 的 DA 和 UA 显示出明显的 SWV 响应。此外，发现设计的传感器对电活性分子的抗干扰特性具有出色的稳定性和良好的再现性。最后用于药物化合物中DA和UA的检测以及生理残留的检测。