Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, No.1, Section 3, Chung-Hsiao East Road, Taipei, 106, Taiwan.
Department of Chemistry, College of Science, Princess Nourah bint Abdulrahman University, Riyadh, 11671, Saudi Arabia.
Mikrochim Acta. 2021 Aug 30;188(9):315. doi: 10.1007/s00604-021-04978-9.
Selective and sensitive dopamine (DPA) sensor was developed using hydrothermally prepared functionalized multi-walled carbon nanotube-coated bismuth molybdate (f-MWCNT@BMO). The f-MWCNT@BMO-reinforced electrode exhibited an outstanding electrocatalytic activity towards DPA oxidation. The nanocomposite-reinforced electrode displayed a rapid response towards DPA sensing and possessed the minimized potential of (E + 0.285 V vs Ag/AgCl) in 0.1 M phosphate buffer (PB). The electrochemical results of prepared sensors were analyzed using the differential pulse voltammetry method (DPV). As a result, the f-MWCNT@BMO-reinforced electrode exhibited a widelinear range of 10 nM - 814 μM with a very low detection limit of 3.4 nM towards DPA oxidation. The developed sensor shows excellent selectivity in presence of similar functional group biomolecules. The detection of DPA in real samples was evaluated in human serum, as the results of the proposed sensor possessed good recoveries.
采用水热法制备的功能化多壁碳纳米管负载钼酸铋（f-MWCNT@BMO）制备了选择性和灵敏的多巴胺（DPA）传感器。f-MWCNT@BMO 增强电极对 DPA 氧化表现出出色的电催化活性。纳米复合材料增强电极对 DPA 传感具有快速响应，在 0.1 M 磷酸盐缓冲液（PB）中具有最小的（E + 0.285 V 与 Ag/AgCl 相比）电位。使用差分脉冲伏安法（DPV）分析了制备传感器的电化学结果。结果表明，f-MWCNT@BMO 增强电极对 DPA 氧化具有宽线性范围，为 10 nM - 814 μM，检测限低至 3.4 nM。在存在类似官能团生物分子的情况下，开发的传感器表现出优异的选择性。在人血清中评估了实际样品中 DPA 的检测，结果表明该传感器具有良好的回收率。
