Fabrication of scalable and flexible bio-photoanodes by electrospraying thylakoid/graphene oxide composites

Hye In Shin, Teayeop Kim, Il Ho Seo, Seon Il Kim, Yong Jae Kim, Hyeonaug Hong, Yunjeong Park, Hyung Mo Jeong, Kyunghoon Kim, WonHyoung Ryu

Research output: Contribution to journalArticle

Abstract

For extraction of photosynthetic electrons (PEs) from plant cells and algal cells, there have been many approaches using living algal cells or isolated photosynthetic apparatus such as photosystem II, photosystem I, and thylakoid membranes (TMs). Among these, bio-photoanodes coated with TMs demonstrated stable performance and the possibility for their practical applications. When a TM photoanode is prepared, TMs are deposited on the surface of a metal electrode. However, since the thickness of TM films determines the light absorption and electron transfer processes, the performance of a TM bio-photoanode is significantly affected by the TM film quality. Thus, in this study, electrospraying was employed to deposit TMs with enhanced control of the thickness and uniformity of TM coating on metal electrodes. In particular, we investigated how both the quality of TM films and the magnitude of PE currents were influenced by electrospraying time, substrate motion, solution feed rates, TM concentration, and addition of graphene oxide (GO) nanosheets. Finally, to assess the feasibility of TM electrospraying as a scalable fabrication method, TMs were electrosprayed on 5 × 5 cm 2 size films of indium tin oxide (ITO)-coated polyethylene naphthalate (PEN) (ITO-PEN). The coating uniformity was assessed by measuring PE currents from different locations of the TM-deposited ITO-PEN films.

Original languageEnglish
Pages (from-to)1-9
Number of pages9
JournalApplied Surface Science
Volume481
DOIs
Publication statusPublished - 2019 Jul 1

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Graphite
Oxides
Graphene
Membranes
Fabrication
Composite materials
Polyethylene
Tin oxides
Indium
Polyethylenes
Electrons
Metals
Photosystem I Protein Complex
Coatings
Electrodes
Photosystem II Protein Complex
Nanosheets
Light absorption

All Science Journal Classification (ASJC) codes

  • Surfaces, Coatings and Films

Cite this

Shin, Hye In ; Kim, Teayeop ; Seo, Il Ho ; Kim, Seon Il ; Kim, Yong Jae ; Hong, Hyeonaug ; Park, Yunjeong ; Jeong, Hyung Mo ; Kim, Kyunghoon ; Ryu, WonHyoung. / Fabrication of scalable and flexible bio-photoanodes by electrospraying thylakoid/graphene oxide composites. In: Applied Surface Science. 2019 ; Vol. 481. pp. 1-9.
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Fabrication of scalable and flexible bio-photoanodes by electrospraying thylakoid/graphene oxide composites. / Shin, Hye In; Kim, Teayeop; Seo, Il Ho; Kim, Seon Il; Kim, Yong Jae; Hong, Hyeonaug; Park, Yunjeong; Jeong, Hyung Mo; Kim, Kyunghoon; Ryu, WonHyoung.

In: Applied Surface Science, Vol. 481, 01.07.2019, p. 1-9.

Research output: Contribution to journalArticle

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AU - Shin, Hye In

AU - Kim, Teayeop

AU - Seo, Il Ho

AU - Kim, Seon Il

AU - Kim, Yong Jae

AU - Hong, Hyeonaug

AU - Park, Yunjeong

AU - Jeong, Hyung Mo

AU - Kim, Kyunghoon

AU - Ryu, WonHyoung

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