auco2 /C对乙二醇氧化和氧还原反应的电催化活性

IF 0.5 4区化学 Q4 CHEMISTRY, MULTIDISCIPLINARY

Chemija Pub Date : 2020-04-21 DOI:10.6001/chemija.v31i2.4217

V. Kepenienė, R. Stagniūnaitė, Daina Upskuvienė, L. Tamašauskaitė-Tamašiūnaitė, V. Pakštas, Audrius Drabavičius, M. Andrulevičius, E. Norkus

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引用次数: 3

摘要

2 .考纳斯理工大学材料科学研究所，59 Baršausko Street, 50131 Kaunas，立陶宛。通过吸附Au胶体溶液中的AuNPs在CeO2/C和纯碳(C)底物上获得AuCeO2/C和Au/C催化剂。发现在CeO2/C和C表面吸附了约50 nm大小的AuNPs;所研究的AuCeO2/C和Au/C催化剂的电催化活性不同。与裸Au/C催化剂相比，在AuCeO2/C催化剂上的乙二醇氧化电流密度值高约3倍。此外，与Au/C催化剂相比，AuCeO2/C催化剂在碱性介质中表现出更多的正起始电位，并且在混合动力学-扩散区具有更高的氧还原反应电流。

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Electrocatalytic activity of AuCeO2/C towards ethylene glycol oxidation and oxygen reduction reactions

2 Institute of Materials Science of Kaunas University of Technology, 59 Baršausko Street, 50131 Kaunas, Lithuania AuCeO2/C and Au/C catalysts were obtained by adsorption of AuNPs on the CeO2/C and pure carbon (C) substrates from an Au colloidal solution. It has been found that AuNPs of ca. 50 nm in size were adsorbed on the surfaces of CeO2/C and C; however, electrocatalytic activity of the investigated AuCeO2/C and Au/C catalysts was different. Ethylene glycol oxidation current density values are ca. 3 times higher on the AuCeO2/C catalyst as compared to those of the bare Au/C catalyst. Moreover, the AuCeO2/C catalyst showed more positive onset potentials, as well as higher current in the mixed-kinetic-diffusion region towards the oxygen reduction reaction in an alkaline medium compared to that of the Au/C catalyst.

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来源期刊

Chemija 化学-化学综合

CiteScore

1.30

自引率

16.70%

发文量

审稿时长

>12 weeks

期刊介绍： Chemija publishes original research articles and reviews from all branches of modern chemistry, including physical, inorganic, analytical, organic, polymer chemistry, electrochemistry, and multidisciplinary approaches.