Sekretareva Group

protein on electrode

We aim to enhance the understanding of electron transfer processes within (bio)electrocatalysts and on the electrode/catalyst interface at the molecular level, and to design new (bio)electrocatalytic devices based on this new understanding. Our research bridge the disciplines of electrochemistry and (bio)inorganic chemistry and utilizes a range of electrochemical, spectroscopic and theoretical techniques, including single entity electrochemistry, protein film electrochemistry, electron paramagnetic resonance spectroscopy and quantum mechanical calculations, to address fundamental question of relevance to electrocatalysis.

Follow the link to find out more about our current projects.

Join us

If you are interested in joining our group, don’t hesitate to contact us. Applications from interested students (PhD, Master, etc.) and PostDocs are always welcome!

OPEN scholarship postdoc position

We have a two-year postdoc position in bioelectrochemistry, including protein film electrochemistry, single entity bioelectrochemistry, and modeling. Please send your application no later than July 15th, 2022.

Project description
Oxygen reduction reaction is a key reaction for energy technology utilized in fuel cells and air-breathing batteries. Currently, noble metal, platinum (Pt), and its alloys are predominantly used as ORR catalysts in low-temperature fuel cells. The efficiency of a fuel cell strongly depends on the oxygen reduction kinetics. Even with Pt catalysts, the cathodic ORR is often the rate-limiting step of the overall process, since the onset of the ORR on Pt occurs at approximately 1.0 V, which is well below the reversible potential for oxygen reduction of 1.23V vs RHE. In nature, ORR is remarkably efficiently performed by high-potential multicopper oxidases, which are able to catalyze four-electron ORR at extremely low overpotentials close to the thermodynamic potential. Despite an extensive body of work on homogeneous catalysis by multicopper oxidases a rigorous investigation of heterogeneous catalysis by these enzymes is still missing.

This project aims to further investigate the mechanism and pathways of electron transfer in heterogeneous catalysis by multicopper oxidases. This will be done using a combination of site-directed mutagenesis, protein film electrochemistry and single-molecule bioelectrochemistry coupled to signal modeling, and spectroscopic studies. 

Further reading:

Alina Sekretareva, Shiliang Tian, S. Gounel, Nicolas Mano, Edward I. Solomon. Electron Transfer to the Trinuclear Copper Cluster in Electrocatalysis by the Multicopper Oxidases. J. Am. Chem. Soc. 2021, 143, 41, 17236–17249.

Alina Sekretaryova, Stephen M. Jones, Edward I. Solomon. O2 Reduction to Water by High Potential Multicopper Oxidases: Contributions of the T1 Copper Site Potential and the Local Environment of the Trinuclear Copper Cluster. J. Am. Chem. Soc. 2019, 141, 11304−11314.

Alina N Sekretaryova, Mikhail Yu Vagin, Anthony PF Turner, Mats Eriksson. Electrocatalytic currents from single enzyme molecules. J. Am. Chem. Soc. 2016, 138, 8, 2504-2507.

Requirements

The applicant must hold a Ph.D. degree or an international equivalent within the field of Electrochemistry, Physical Chemistry, or a related field, or must have submitted their doctoral thesis for assessment in a relevant field prior to the application deadline. Documented experience in bioelectrochemistry is required. Competence in protein film electrochemistry will be considered an advantage.

The assessment of applications is based primarily on the applicant's ability to conduct independent research based on scientific skills. Greater importance is attached to the quality of individual scientific work, than to the number of publications. The applicant must be sufficiently fluent in English to understand, discuss and communicate science on a high level.

Consideration will also be given to good collaborative skills, drive, creativity, and independence, how the applicant’s experience and skills complement and strengthen ongoing research within the group.

Contact
Further information about the position can be obtained from the project leader, Alina Sekretareva, alina.sekretareva@kemi.uu.se.

Application
Please submit your application via email to alina.sekretareva@kemi.uu.se before the deadline. Please include the following documents:

  • A letter of motivation as an account of the applicant’s research interests and motivation for applying for the position (max 1 page)
  • CV
  • Publication list
  • Copy of your Ph.D. degree certificate*
  • The names and contact information of three referees.

If you have not got a Ph.D. degree, please submit a certificate or relevant document stating your Ph.D. finishing time from your University or your main supervisor. 

Our research is financed by

Knut and Alice Wallenberg Foundation, Vetenskapsrådet, Formas, Carl Tryggers Stifelse, samt Konung Carl XVI Gustafs 50-årsfond för vetenskap, teknik och miljö.

Last modified: 2022-06-14