title: Nanoporous PdCu alloy as an excellent electrochemical sensor for H2O2and glucose detection.
abstract: Nanoporous (NP) PdCu alloy is easily fabricated by dealloying PdCuAl ternary alloy in dilute sulfuric acid. Selectively dissolving Al from PdCuAl alloy generates the three-dimensional uniform nanosponge architecture with narrow ligament size distribution. Benefitting from the unique nanoporous architecture and the alloying effect, the as-made NP-PdCu exhibits outstanding sensing performance towards the detection of hydrogen peroxide (H2O2) and glucose. Compared with NP-Pd and commercial Pd/C catalysts, the NP-PdCu alloy presents high sensitivity, wide linear range of 0.1-2.0mM, low detection limit of 2.1μM, and long-term stability toward H2O2detection. In addition, the NP-PdCu can efficiently detect glucose in a wide concentration range (1-30mM) with the low detection limit of 1.9μM. Moreover, the NP-PdCu exhibits good anti-interference toward ascorbic acid, uric acid, and dopamine. Characterized by easy preparation, unique electrocatalytic activity, and high structure stability, the NP-PdCu alloy possesses great application prospect to construct platform for electrochemical sensing.
authors.affiliation: Shandong Provincial Key Laboratory of Fluorine Chemistry and Chemical Materials, School of Chemistry and Chemical Engineering, University of Jinan, Jinan 250022, China.
authors.forename: Hongxiao
authors.initials: H
authors.lastname: Yang
authors.affiliation: School of Basic Medical Sciences, Shandong University of Traditional Chinese Medicine, Jinan 250355, China.
authors.forename: Zhihong
authors.initials: Z
authors.lastname: Wang
authors.affiliation: Shandong Provincial Key Laboratory of Fluorine Chemistry and Chemical Materials, School of Chemistry and Chemical Engineering, University of Jinan, Jinan 250022, China.
authors.forename: Chencan
authors.initials: C
authors.lastname: Li
authors.affiliation: Shandong Provincial Key Laboratory of Fluorine Chemistry and Chemical Materials, School of Chemistry and Chemical Engineering, University of Jinan, Jinan 250022, China. Electronic address: chm_xucx@ujn.edu.cn.
authors.forename: Caixia
authors.initials: C
authors.lastname: Xu
mesh_terms: D000497:Alloys / Q000737:chemistry*; D003300:Copper / Q000737:chemistry; D055664:Electrochemical Techniques; D005947:Glucose / Q000032:analysis*; D006861:Hydrogen Peroxide / Q000032:analysis*; D053758:Nanoparticles / Q000737:chemistry*; D010165:Palladium / Q000737:chemistry; D010316:Particle Size; D016062:Porosity; D013499:Surface Properties
chemical_list: D000497:Alloys; D010165:Palladium; D003300:Copper; D006861:Hydrogen Peroxide; D005947:Glucose
keywords: Electrochemical sensing; Glucose; Hydrogen peroxide; Nanoporous; Palladium