Nanomodification of the electrodes in microbial fuel cell

impact of nanoparticle density on electricity production and microbial community

Fatima AlZahraa Alatraktchi, Yifeng Zhang, Irini Angelidaki

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

Resumé

The nano-decoration of electrode with nanoparticles is one effective way to enhance power output of microbial fuel cells (MFCs). However, the amount of nanoparticles used for decoration has not been optimized yet, and how it affects the microbial community is still unknown. In this study, different densities of gold (Au) nanoparticles were sputtered on carbon paper as electrodes of MFCs.The results show that power generation increased with Au nanoparticle density on the electrodes. The highest power density was obtained by depositing carbon paper with an Au thickness of 50 nm and 100 nm on each side, respectively, which was 1.22-1.88 times higher than that obtained with plain carbon paper electrode (control). Furthermore, the Coulombic efficiency was increased with the Au density. Consequently, the maximum lag time before stable power generation was shortened by 1.22 times the lag time of the control. Different densities of Au nanoparticles also resulted in differentmicrobial communities on the anode. More diverse bacterial communities were found with higher Au nanoparticle densities. These results provide new dimensions in understanding electrode modificationwith nanoparticles in MFC systems.
OriginalsprogEngelsk
TidsskriftApplied Energy
Vol/bind116
Sider (fra-til)216-222
Antal sider7
ISSN0306-2619
DOI
StatusUdgivet - 2014
Udgivet eksterntJa

Citer dette

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title = "Nanomodification of the electrodes in microbial fuel cell: impact of nanoparticle density on electricity production and microbial community",
abstract = "The nano-decoration of electrode with nanoparticles is one effective way to enhance power output of microbial fuel cells (MFCs). However, the amount of nanoparticles used for decoration has not been optimized yet, and how it affects the microbial community is still unknown. In this study, different densities of gold (Au) nanoparticles were sputtered on carbon paper as electrodes of MFCs.The results show that power generation increased with Au nanoparticle density on the electrodes. The highest power density was obtained by depositing carbon paper with an Au thickness of 50 nm and 100 nm on each side, respectively, which was 1.22-1.88 times higher than that obtained with plain carbon paper electrode (control). Furthermore, the Coulombic efficiency was increased with the Au density. Consequently, the maximum lag time before stable power generation was shortened by 1.22 times the lag time of the control. Different densities of Au nanoparticles also resulted in differentmicrobial communities on the anode. More diverse bacterial communities were found with higher Au nanoparticle densities. These results provide new dimensions in understanding electrode modificationwith nanoparticles in MFC systems.",
keywords = "Microbial fuel cell, Nanoparticles, Electricity generation, Electrodes modification, Microbial community",
author = "Alatraktchi, {Fatima AlZahraa} and Yifeng Zhang and Irini Angelidaki",
year = "2014",
doi = "10.1016/j.apenergy.2013.11.058",
language = "English",
volume = "116",
pages = "216--222",
journal = "Applied Energy",
issn = "0306-2619",
publisher = "Pergamon Press",

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Nanomodification of the electrodes in microbial fuel cell : impact of nanoparticle density on electricity production and microbial community. / Alatraktchi, Fatima AlZahraa; Zhang, Yifeng; Angelidaki, Irini.

I: Applied Energy, Bind 116, 2014, s. 216-222.

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

TY - JOUR

T1 - Nanomodification of the electrodes in microbial fuel cell

T2 - impact of nanoparticle density on electricity production and microbial community

AU - Alatraktchi, Fatima AlZahraa

AU - Zhang, Yifeng

AU - Angelidaki, Irini

PY - 2014

Y1 - 2014

N2 - The nano-decoration of electrode with nanoparticles is one effective way to enhance power output of microbial fuel cells (MFCs). However, the amount of nanoparticles used for decoration has not been optimized yet, and how it affects the microbial community is still unknown. In this study, different densities of gold (Au) nanoparticles were sputtered on carbon paper as electrodes of MFCs.The results show that power generation increased with Au nanoparticle density on the electrodes. The highest power density was obtained by depositing carbon paper with an Au thickness of 50 nm and 100 nm on each side, respectively, which was 1.22-1.88 times higher than that obtained with plain carbon paper electrode (control). Furthermore, the Coulombic efficiency was increased with the Au density. Consequently, the maximum lag time before stable power generation was shortened by 1.22 times the lag time of the control. Different densities of Au nanoparticles also resulted in differentmicrobial communities on the anode. More diverse bacterial communities were found with higher Au nanoparticle densities. These results provide new dimensions in understanding electrode modificationwith nanoparticles in MFC systems.

AB - The nano-decoration of electrode with nanoparticles is one effective way to enhance power output of microbial fuel cells (MFCs). However, the amount of nanoparticles used for decoration has not been optimized yet, and how it affects the microbial community is still unknown. In this study, different densities of gold (Au) nanoparticles were sputtered on carbon paper as electrodes of MFCs.The results show that power generation increased with Au nanoparticle density on the electrodes. The highest power density was obtained by depositing carbon paper with an Au thickness of 50 nm and 100 nm on each side, respectively, which was 1.22-1.88 times higher than that obtained with plain carbon paper electrode (control). Furthermore, the Coulombic efficiency was increased with the Au density. Consequently, the maximum lag time before stable power generation was shortened by 1.22 times the lag time of the control. Different densities of Au nanoparticles also resulted in differentmicrobial communities on the anode. More diverse bacterial communities were found with higher Au nanoparticle densities. These results provide new dimensions in understanding electrode modificationwith nanoparticles in MFC systems.

KW - Microbial fuel cell

KW - Nanoparticles

KW - Electricity generation

KW - Electrodes modification

KW - Microbial community

U2 - 10.1016/j.apenergy.2013.11.058

DO - 10.1016/j.apenergy.2013.11.058

M3 - Journal article

VL - 116

SP - 216

EP - 222

JO - Applied Energy

JF - Applied Energy

SN - 0306-2619

ER -