Electrocatalytic Oxidation and Determination of Hydrazine at an AuCu Nanoparticles – Graphene – Ionic Liquid Composite Film Coated Glassy Carbon Electrode | Zendy

Shang Lei | Zendy; Zhao Faqiong | Zendy; Zeng Baizhao | Zendy

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Electrocatalytic Oxidation and Determination of Hydrazine at an AuCu Nanoparticles – Graphene – Ionic Liquid Composite Film Coated Glassy Carbon Electrode

Author(s) -

Shang Lei,

Zhao Faqiong,

Zeng Baizhao

Publication year - 2012

Publication title -

electroanalysis

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.574

H-Index - 128

eISSN - 1521-4109

pISSN - 1040-0397

DOI - 10.1002/elan.201200209

Subject(s) - ionic liquid , electrocatalyst , hydrazine (antidepressant) , graphene , electrode , materials science , detection limit , nanoparticle , inorganic chemistry , catalysis , cyclic voltammetry , electrochemistry , composite number , glassy carbon , chemical engineering , chemistry , nanotechnology , composite material , organic chemistry , chromatography , engineering

Gold‐copper alloy nanoparticles (AuCu NPs) were electrodeposited on a graphene – ionic liquid composite film (EGN‐IL). The AuCu NPs showed high electrocatalysis to the oxidation of hydrazine with a catalytic reaction rate constant of about 5.0×10 4 mol/Ls. In phosphate buffer solutions (pH 6.8) the oxidation current of hydrazine at 0.15 V (vs. SCE) at the resulting electrode (AuCuEGN‐IL/GCE) was linear to its concentration in the range of 0.2–110 µM with a sensitivity of 56.7 µA/mM, and the detection limit was 0.1 µM ( S / N =3). The electrode was successfully applied to the determination of waste water.

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