Cuprous oxide template synthesis of hollow-cubic Cu2O@PdxRuy nanoparticles for ethanol electrooxidation in alkaline media. Issue 80 (12th August 2016)

• Record Type: Journal Article
• Authors: Liu, Peng; Cheng, Zhiyu; Ma, Le; Zhang, Min; Qiu, Yongfu; Chen, Meiqiong; Cheng, Faliang
• Is Part Of: RSC advances. Volume 6:Issue 80(2016)
• Page Start: 76684
• Page End: 76690
• Publication Date: 2016-08-12
• Subjects: Chemistry -- Periodicals; 540.5
• DOI: 10.1039/c6ra14439j
• Languages: English
• ISSNs: 2046-2069

Abstract

Abstract : Surfactant-free and low Pd loading Cu2 O@Pd x Ru y hollow-cubes were facilely prepared and their electrocatalytic performance for ethanol electrooxidation were investigated. Abstract : Surfactant-free and low Pd loading Cu2 O@Pd x Ru y hollow-cubes were facilely prepared via a galvanic replacement reaction with electrodeposited Cu2 O cubes as sacrificed templates. The morphology and composition of the as-synthesized nanoparticles were characterized, through which the Pd : Ru atomic ratio, metal loading, surface composition and structure of several Cu2 O@Pd x Ru y nanoparticles were determined. The promotional role of Ru on electrooxidation of ethanol in alkaline media over Cu2 O@Pd x Ru y was investigated. By comparison, the following electrocatalytic activity order of the catalysts was obtained: Pd/C < Cu2 O@Pd < Cu2 O@Pd1 Ru3 < Cu2 O@Pd3.5 Ru1 < Cu2 O@Pd2.1 Ru1 < Cu2 O@Pd1 Ru1.6 < Cu2 O@Pd1 Ru1 . Combined with the stability study, the hollow-cubic Cu2 O@Pd1 Ru1 nanoparticles show superior catalytic activity and stability toward electrooxidation of ethanol in alkaline media compared to the other catalysts studied in this work which is attributed to the appropriate Pd : Ru ratio and the hollow-cubic structure.