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Oxygen Reduction Mediated by Single Nanodroplets Containing Attomoles of Vitamin B 12 : Electrocatalytic Nano‐Impacts Method
Author(s) -
Cheng Wei,
Compton Richard G.
Publication year - 2015
Publication title -
angewandte chemie
Language(s) - English
Resource type - Journals
eISSN - 1521-3757
pISSN - 0044-8249
DOI - 10.1002/ange.201501820
Subject(s) - chemistry , oxygen , electron transfer , oxygen reduction , photochemistry , oxygen reduction reaction , nano , inorganic chemistry , chemical engineering , organic chemistry , electrochemistry , electrode , engineering
We report the use of single Vitamin B 12 nanodroplets to mediate the reduction of oxygen in neutral buffer. Electron transfer to single Vitamin B 12 nanodroplets is observed using the nano‐impacts method and shown to be quantitative. The mechanism of mediated oxygen reduction by single VB 12 droplets is revealed as via both Co II and Co I reduced from Co III in VB 12 through one or two electron transfer followed by the four‐electron reduction of oxygen.