Open AccessCO 2 reduction to acetate in mixtures of ultrasmall (Cu) n ,(Ag) m bimetallic nanoparticles
Author(s) -
Ying Wang,
Degao Wang,
Christopher J. Dares,
Seth L. Marquard,
Matthew V. Sheridan,
Thomas J. Meyer
Publication year - 2017
Publication title -
proceedings of the national academy of sciences
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.011
H-Index - 771
eISSN - 1091-6490
pISSN - 0027-8424
DOI - 10.1073/pnas.1713962115
Subject(s) - bimetallic strip , benzotriazole , aqueous solution , artificial photosynthesis , chemistry , nanoparticle , nuclear chemistry , electrochemistry , inorganic chemistry , redox , materials science , electrode , nanotechnology , organic chemistry , catalysis , photocatalysis
Monodispersed mixtures of 6-nm Cu and Ag nanoparticles were prepared by electrochemical reduction on electrochemically polymerized poly -Fe(vbpy) 3 (PF 6 ) 2 film electrodes on glassy carbon. Conversion of the complex to poly -Fe(vbpy) 2 (CN) 2 followed by surface binding of salts of the cations and electrochemical reduction gave a mixture of chemically distinct clusters on the surface, (Cu) m ,(Ag) n |polymer|glassy carbon electrode (GCE), as shown by X-ray photoelectron spectroscopy (XPS) measurements. A (Cu) 2 ,(Ag) 3 |(80-monolayer- poly -Fe(vbpy) 3 2+ |GCE electrode at -1.33 V vs. reversible hydrogen electrode (RHE) in 0.5 M KHCO 3 , with 8 ppm added benzotriazole (BTA) at 0 °C, gave acetate with a faradaic efficiency of 21.2%.
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