Hybrid bio-organic interfaces with matchable nanoscale topography for durable high extracellular electron transfer activity

Chunmei Ding, Huan Liu, Meiling Lv, Tianyi Zhao, Ying Zhu, Lei Jiang

Research output: Contribution to journalArticleResearchpeer-review

19 Citations (Scopus)

Abstract

Here, we developed a novel hybrid bio-organic interface with matchable nano-scale topography between a polypyrrole nanowire array (PPy-NA) and the bacterium Shewanella, which enabled a remarkably increased extracellular electron transfer (EET) current from genus Shewanella over a rather long period. PPy-NA thus exhibited outstanding performance in mediating bacterial EET, which was superior to normal electrodes such as carbon plates, Au and tin-doped In2O3. It was proposed that the combined effect of the inherent electrochemical nature of PPy and the porous structured bacterial network that was generated on the PPy-NA enabled long-term stability, while the high efficiency was attributed to the enhanced electron transfer rate between PPy-NA and microbes caused by the enhanced local topological interactions.

Original languageEnglish
Pages (from-to)7866-7871
Number of pages6
JournalNanoscale
Volume6
Issue number14
DOIs
Publication statusPublished - 21 Jul 2014
Externally publishedYes

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