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The influence of surface composition of carbon nanotubes on the photobioelectrochemical activity of thylakoid bioanodes mediated by osmium-complex modified redox polymer

Pankratov, Dmitry; Zhao, Jianming; Nur, Mohammed Ahmed; Shen, Fei; Leech, Dónal; Chi, Qijin; Pankratova, Galina LU and Gorton, Lo LU (2019) In Electrochimica Acta 310. p.20-25
Abstract


A combination of photosynthetic biocatalysts with high surface area conductive materials mediated by an osmium-complex modified redox polymer (OsRP)holds promising features for the development of sustainable “green” systems for solar energy conversion. In this work we performed a comparative study of two types of carbon nanotubes (CNTs)synthesized by pyrolysis of polymeric precursors. Both CNTs were of similar morphology, but had a different surface C/O ratio. The CNTs were utilized as a support for immobilization of thylakoid membranes, electrochemically wired through the OsRP. The photobioanodes based on the CNTs with a higher C/O ratio exhibit a higher maximum photocurrent... (More)


A combination of photosynthetic biocatalysts with high surface area conductive materials mediated by an osmium-complex modified redox polymer (OsRP)holds promising features for the development of sustainable “green” systems for solar energy conversion. In this work we performed a comparative study of two types of carbon nanotubes (CNTs)synthesized by pyrolysis of polymeric precursors. Both CNTs were of similar morphology, but had a different surface C/O ratio. The CNTs were utilized as a support for immobilization of thylakoid membranes, electrochemically wired through the OsRP. The photobioanodes based on the CNTs with a higher C/O ratio exhibit a higher maximum photocurrent density of 97.1 ± 8.3 μA cm
−2
at a light intensity of 400 W m
−2
with reduced charge transfer resistance, but had lower operational stability. Our results demonstrate the significance of investigating of electrochemical communication between the photosynthetic component, the redox mediator and the support nanomaterial and may offer new opportunities for designing and optimization of mediated bioelectrochemical systems.

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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Carbon nanotube, Osmium-complex modified redox polymer, Photobioelectrochemical cell, Solar energy conversion, Thylakoid membrane
in
Electrochimica Acta
volume
310
pages
6 pages
publisher
Pergamon
external identifiers
  • scopus:85064828605
ISSN
0013-4686
DOI
10.1016/j.electacta.2019.04.097
language
English
LU publication?
yes
id
a2d90a05-b4ca-4ef8-930f-811f20ad5c20
date added to LUP
2019-05-08 11:51:08
date last changed
2019-05-28 03:58:09
@article{a2d90a05-b4ca-4ef8-930f-811f20ad5c20,
  abstract     = {<p><br>
                                                         A combination of photosynthetic biocatalysts with high surface area conductive materials mediated by an osmium-complex modified redox polymer (OsRP)holds promising features for the development of sustainable “green” systems for solar energy conversion. In this work we performed a comparative study of two types of carbon nanotubes (CNTs)synthesized by pyrolysis of polymeric precursors. Both CNTs were of similar morphology, but had a different surface C/O ratio. The CNTs were utilized as a support for immobilization of thylakoid membranes, electrochemically wired through the OsRP. The photobioanodes based on the CNTs with a higher C/O ratio exhibit a higher maximum photocurrent density of 97.1 ± 8.3 μA cm                             <br>
                            <sup>−2</sup><br>
                                                          at a light intensity of 400 W m                             <br>
                            <sup>−2</sup><br>
                                                          with reduced charge transfer resistance, but had lower operational stability. Our results demonstrate the significance of investigating of electrochemical communication between the photosynthetic component, the redox mediator and the support nanomaterial and may offer new opportunities for designing and optimization of mediated bioelectrochemical systems.                         <br>
                        </p>},
  author       = {Pankratov, Dmitry and Zhao, Jianming and Nur, Mohammed Ahmed and Shen, Fei and Leech, Dónal and Chi, Qijin and Pankratova, Galina and Gorton, Lo},
  issn         = {0013-4686},
  keyword      = {Carbon nanotube,Osmium-complex modified redox polymer,Photobioelectrochemical cell,Solar energy conversion,Thylakoid membrane},
  language     = {eng},
  pages        = {20--25},
  publisher    = {Pergamon},
  series       = {Electrochimica Acta},
  title        = {The influence of surface composition of carbon nanotubes on the photobioelectrochemical activity of thylakoid bioanodes mediated by osmium-complex modified redox polymer},
  url          = {http://dx.doi.org/10.1016/j.electacta.2019.04.097},
  volume       = {310},
  year         = {2019},
}