Trimetallic (Aurod-Pdshell-Ptcluster) Catalyst Used as Amperometric Hydrogen Peroxide Sensor

Biosensors

Shou-I Cheng²  John Rick²  Chun-Jern Pan²  Hung-Lung Chou³  Wei-Nien Su³  Kuan-Jung Chen²  Chung-Chiun Liu¹  Yaw-Wen Yang⁴  Chia-Hsin Wang⁴  Bing-Joe Hwang² 

[1] Department of Chemical Engineering, Case Western Reserve University, Cleveland, OH 44106, USA; E-Mail:;Nanoelectrochemistry Laboratory, Department of Chemical Engineering, National Taiwan University of Science and Technology, Taipei 106, Taiwan; E-Mails:;Graduate Institute of Applied Science and Technology, National Taiwan University of Science and Technology, Taipei 106, Taiwan; E-Mails:;National Synchrotron Radiation Research Center, Hsinchu 30076, Taiwan; E-Mails:

关键词: trimetallic catalyst;    Au core-shell;    hydrogen peroxide sensing;    nanoparticles;    nanorods;   

DOI  :  10.3390/bios4040461

来源: mdpi

【 摘 要 】

Bimetallic nanostructured core-shell structures are commonly used as catalysts in a wide variety of reactions. We surmised that the addition of an additional metal would potentially allow catalytic tailoring with the possibility of an increase in activity. Here a tri-metallic catalytic structure, consisting of clustered catalytic Pt on the surface of a Pd shell supported on a rod shaped Au core was fabricated. The significance of the additional metallic component is shown by comparative electrochemically active surface area (ECSA) analysis results for the trimetallic Au_rod-Pd_shell-Pt_cluster, bimetallic Au_rod-Pt_cluster and monometallic JM-Pt (used as a reference), which have respective ECSA values (cm²/mgPt) of 1883.0, 1371.7 and 879. The potential utility of the trimetallic catalysts was shown in a hydrogen peroxide sensing protocol, which showed the catalyst to have a sensitivity of 604 ìA/mMcm² within a linear range of 0.0013–6.191 mM.

【 授权许可】

CC BY   
© 2014 by the authors; licensee MDPI, Basel, Switzerland.