Nanoscale membranes that chemically isolate and electronically wire up the abiotic/biotic interface
Abstract
Abstract By electrochemically coupling microbial and abiotic catalysts, bioelectrochemical systems such as microbial electrolysis cells and microbial electrosynthesis systems synthesize energy-rich chemicals from energy-poor precursors with unmatched efficiency. However, to circumvent chemical incompatibilities between the microbial cells and inorganic materials that result in toxicity, corrosion, fouling, and efficiency-degrading cross-reactions between oxidation and reduction environments, bioelectrochemical systems physically separate the microbial and inorganic catalysts by macroscopic distances, thus introducing ohmic losses, rendering these systems impractical at scale. Here we electrochemically couple an inorganic catalyst, a SnO 2 anode, with a microbial catalyst, Shewanella oneidensis , via a 2-nm-thick silica membrane containing -CN and -NO 2 functionalized p -oligo(phenylene vinylene) molecular wires. This membrane enables electron flow at 0.51 μA cm −2 from microbial catalysts to the inorganic anode, while blocking small molecule transport. Thus the modular architecture avoids chemical incompatibilities without ohmic losses and introduces an immense design space for scale up of bioelectrochemical systems.
- Publication Date:
- Research Org.:
- Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES)
- OSTI Identifier:
- 1440377
- Alternate Identifier(s):
- OSTI ID: 1460352
- Grant/Contract Number:
- AC02-05CH11231
- Resource Type:
- Published Article
- Journal Name:
- Nature Communications
- Additional Journal Information:
- Journal Name: Nature Communications Journal Volume: 9 Journal Issue: 1; Journal ID: ISSN 2041-1723
- Publisher:
- Nature Publishing Group
- Country of Publication:
- United Kingdom
- Language:
- English
- Subject:
- 59 BASIC BIOLOGICAL SCIENCES
Citation Formats
Cornejo, Jose A., Sheng, Hua, Edri, Eran, M. Ajo-Franklin, Caroline, and Frei, Heinz. Nanoscale membranes that chemically isolate and electronically wire up the abiotic/biotic interface. United Kingdom: N. p., 2018.
Web. doi:10.1038/s41467-018-04707-6.
Cornejo, Jose A., Sheng, Hua, Edri, Eran, M. Ajo-Franklin, Caroline, & Frei, Heinz. Nanoscale membranes that chemically isolate and electronically wire up the abiotic/biotic interface. United Kingdom. https://doi.org/10.1038/s41467-018-04707-6
Cornejo, Jose A., Sheng, Hua, Edri, Eran, M. Ajo-Franklin, Caroline, and Frei, Heinz. Mon .
"Nanoscale membranes that chemically isolate and electronically wire up the abiotic/biotic interface". United Kingdom. https://doi.org/10.1038/s41467-018-04707-6.
@article{osti_1440377,
title = {Nanoscale membranes that chemically isolate and electronically wire up the abiotic/biotic interface},
author = {Cornejo, Jose A. and Sheng, Hua and Edri, Eran and M. Ajo-Franklin, Caroline and Frei, Heinz},
abstractNote = {Abstract By electrochemically coupling microbial and abiotic catalysts, bioelectrochemical systems such as microbial electrolysis cells and microbial electrosynthesis systems synthesize energy-rich chemicals from energy-poor precursors with unmatched efficiency. However, to circumvent chemical incompatibilities between the microbial cells and inorganic materials that result in toxicity, corrosion, fouling, and efficiency-degrading cross-reactions between oxidation and reduction environments, bioelectrochemical systems physically separate the microbial and inorganic catalysts by macroscopic distances, thus introducing ohmic losses, rendering these systems impractical at scale. Here we electrochemically couple an inorganic catalyst, a SnO 2 anode, with a microbial catalyst, Shewanella oneidensis , via a 2-nm-thick silica membrane containing -CN and -NO 2 functionalized p -oligo(phenylene vinylene) molecular wires. This membrane enables electron flow at 0.51 μA cm −2 from microbial catalysts to the inorganic anode, while blocking small molecule transport. Thus the modular architecture avoids chemical incompatibilities without ohmic losses and introduces an immense design space for scale up of bioelectrochemical systems.},
doi = {10.1038/s41467-018-04707-6},
journal = {Nature Communications},
number = 1,
volume = 9,
place = {United Kingdom},
year = {Mon Jun 11 00:00:00 EDT 2018},
month = {Mon Jun 11 00:00:00 EDT 2018}
}
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https://doi.org/10.1038/s41467-018-04707-6
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