Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, Taipei 10608, Taiwan.
Nanoscale. 2017 May 18;9(19):6486-6496. doi: 10.1039/c7nr00967d.
Highly stable palladium nanoparticles (Pd NPs) supported on a porous carbon aerogel (Pd/CA) prepared by a facile microwave reduction route is reported. The as-prepared Pd/CA composites were characterized by various techniques, viz. XRD, Raman, SEM-EDX, FE-TEM, BET, and TGA. The Pd NPs were found to disperse uniformly in the porous carbon matrix, which possesses a large surface area (851.8 m g) and pore volume (3.021 cm g). The Pd/CA composite was found to possess extraordinary electrocatalytic activity and excellent selectivity for simultaneous detection of dopamine (DA) and melatonin (ML). The Pd/CA-modified electrode exhibited a wide linear response range for electrochemical sensing of DA (0.01-100 μM) and ML (0.02-500 μM) with a detection limit of 0.0026 and 0.0071 μM, respectively. In addition, the electrochemical sensor reported herein was successfully applied for the detection of DA and ML in human serum and urine samples, revealing perspective practical applications.
本文报道了一种通过简便的微波还原法制备的负载在多孔碳气凝胶（Pd/CA）上的高稳定性钯纳米粒子（Pd NPs）。所制备的 Pd/CA 复合材料通过各种技术进行了表征，即 XRD、拉曼、SEM-EDX、FE-TEM、BET 和 TGA。Pd NPs 被发现均匀分散在多孔碳基质中，具有大的比表面积（851.8 m g）和孔体积（3.021 cm g）。Pd/CA 复合材料表现出非凡的电催化活性和对多巴胺（DA）和褪黑素（ML）同时检测的优异选择性。Pd/CA 修饰电极对电化学检测 DA（0.01-100 μM）和 ML（0.02-500 μM）具有很宽的线性响应范围，检测限分别为 0.0026 和 0.0071 μM。此外，本文报道的电化学传感器成功地应用于人血清和尿液样品中 DA 和 ML 的检测，显示出有前景的实际应用。
