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Scalable, high perf...
Scalable, high performance, enzymatic cathodes based on nanoimprint lithography
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- Pankratov, Dmitry (författare)
- Malmö högskola,Institutionen för biomedicinsk vetenskap (BMV),Biofilms Research Center for Biointerfaces
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- Sundberg, Richard (författare)
- Lund University,Lunds universitet,Fasta tillståndets fysik,Fysiska institutionen,Institutioner vid LTH,Lunds Tekniska Högskola,Solid State Physics,Department of Physics,Departments at LTH,Faculty of Engineering, LTH
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- Sotres, Javier (författare)
- Malmö högskola,Institutionen för biomedicinsk vetenskap (BMV),Biofilms Research Center for Biointerfaces
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- Suyatin, Dmitry (författare)
- Lund University,Lunds universitet,Neuronano Research Center (NRC),Forskargrupper vid Lunds universitet,Fasta tillståndets fysik,Fysiska institutionen,Institutioner vid LTH,Lunds Tekniska Högskola,Lund University Research Groups,Solid State Physics,Department of Physics,Departments at LTH,Faculty of Engineering, LTH
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- Maximov, Ivan (författare)
- Lund University,Lunds universitet,Fasta tillståndets fysik,Fysiska institutionen,Institutioner vid LTH,Lunds Tekniska Högskola,Solid State Physics,Department of Physics,Departments at LTH,Faculty of Engineering, LTH
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- Shleev, Sergey (författare)
- Malmö högskola,Institutionen för biomedicinsk vetenskap (BMV),Biofilms Research Center for Biointerfaces
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- Montelius, Lars (författare)
- Lund University,Lunds universitet,Neuronano Research Center (NRC),Forskargrupper vid Lunds universitet,Fasta tillståndets fysik,Fysiska institutionen,Institutioner vid LTH,Lunds Tekniska Högskola,Lund University Research Groups,Solid State Physics,Department of Physics,Departments at LTH,Faculty of Engineering, LTH
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(creator_code:org_t)
- 2015-06-22
- 2015
- Engelska.
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Ingår i: Beilstein Journal of Nanotechnology. - : Beilstein Institut. - 2190-4286. ; 6, s. 1377-1384
- Relaterad länk:
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http://dx.doi.org/10... (free)
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https://www.beilstei...
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https://doi.org/10.3...
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https://mau.diva-por... (primary) (Raw object)
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https://lup.lub.lu.s...
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https://doi.org/10.3...
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https://urn.kb.se/re...
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Abstract
Ämnesord
Stäng
- Here we detail high performance, enzymatic electrodes for oxygen bio-electroreduction, which can be easily and reproducibly fabricated with industry-scale throughput. Planar and nanostructured electrodes were built on biocompatible, flexible polymer sheets, while nanoimprint lithography was used for electrode nanostructuring. To the best of our knowledge, this is one of the first reports concerning the usage of nanoimprint lithography for amperometric bioelectronic devices. The enzyme (Myrothecium verrucaria bilirubin oxidase) was immobilised on planar (control) and artificially nanostructured, gold electrodes by direct physical adsorption. The detailed electrochemical investigation of bioelectrodes was performed and the following parameters were obtained: open circuit voltage of approximately 0.75 V, and maximum bio-electrocatalytic current densities of 18 mu A/cm(2) and 58 mu A/cm(2) in air-saturated buffers versus 48 mu A/cm(2) and 186 mu A/cm(2) in oxygen-saturated buffers for planar and nanostructured electrodes, respectively. The half-deactivation times of planar and nanostructured biocathodes were measured to be 2 h and 14 h, respectively. The comparison of standard heterogeneous and bio-electrocatalytic rate constants showed that the improved bio-electrocatalytic performance of the nanostructured biocathodes compared to planar biodevices is due to the increased surface area of the nanostructured electrodes, whereas their improved operational stability is attributed to stabilisation of the enzyme inside nanocavities.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Nanoteknik -- Nanoteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Nano-technology -- Nano-technology (hsv//eng)
- NATURVETENSKAP -- Fysik -- Annan fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Other Physics Topics (hsv//eng)
Nyckelord
- bilirubin oxidase
- bio-electrocatalysis
- direct electron transfer
- nanoimprint lithography
- oxygen reduction reaction
- bilirubin oxidase
Publikations- och innehållstyp
- art (ämneskategori)
- ref (ämneskategori)
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