title: Nanoporous platinum-cobalt alloy for electrochemical sensing for ethanol, hydrogen peroxide, and glucose.
abstract: Nanoporous platinum-cobalt (NP-PtCo) alloy with hierarchical nanostructure is straightforwardly fabricated by dealloying PtCoAl alloy in a mild alkaline solution. Selectively etching Al resulted in a hierarchical three-dimensional network nanostructure with a narrow size distribution at 3 nm. The as-prepared NP-PtCo alloy shows superior performance toward ethanol and hydrogen peroxide (H2O2) with highly sensitive response due to its unique electrocatalytic activity. In addition, NP-PtCo also exhibits excellent amperometric durability and long-term stability for H2O2 as well as a good anti-interference toward ascorbic acid, uric acid, and dopamine. The hierarchical nanoporous architecture in PtCo alloy is also highly active for glucose sensing electrooxidation and sensing in a wide linear range. The NP-PtCo alloy holds great application potential for electrochemical sensing with simple preparation, unique catalytic activity, and high structure stability.
authors.affiliation: Key Laboratory of Chemical Sensing & Analysis in Universities of Shandong, School of Chemistry and Chemical Engineering, University of Jinan, Jinan 250022, China. chm_xucx@ujn.edu.cn
authors.forename: Caixia
authors.initials: C
authors.lastname: Xu
authors.forename: Fenglei
authors.initials: F
authors.lastname: Sun
authors.forename: Hua
authors.initials: H
authors.lastname: Gao
authors.forename: Jinping
authors.initials: J
authors.lastname: Wang
mesh_terms: D000497:Alloys / Q000737:chemistry*; D015374:Biosensing Techniques; D003035:Cobalt / Q000737:chemistry*; D055664:Electrochemical Techniques / Q000295:instrumentation*; D000431:Ethanol / Q000737:chemistry*; D005947:Glucose / Q000737:chemistry; D006861:Hydrogen Peroxide / Q000737:chemistry*; D006863:Hydrogen-Ion Concentration; D049329:Nanostructures; D010984:Platinum / Q000737:chemistry*; D013997:Time Factors
chemical_list: D000497:Alloys; D003035:Cobalt; D000431:Ethanol; D010984:Platinum; D006861:Hydrogen Peroxide; D005947:Glucose