Amplifying Reactivity of Bio‐Inspired [FeFe]‐Hydrogenase Mimics by Organic Nanotubes
A bio-inspired FeFe hydrogenase model which catalyses hydrogen evolution reaction (HER) in acidic solutions is immobilized in polyaniline (PANI)-based nanotubes. A combination of analytical techniques reveals that this construct maintains both the molecular signatures of the bio-inspired complex and the material properties of PANI. The amine and imine-rich environment of the PANI chain amplifies the inherent HER activity of the bio-inspired complex, allowing electrocatalytic HER at neutral pH, with lower overpotentials and higher current densities compared to the bio-inspired complex alone. This construct retains the oxygen stability of the bio-inspired complex and remains stable through several hours of aerobic electrolysis, producing only 6.5 % H₂O₂ from the competing oxygen reduction reaction (ORR).
Authors
- Abhishek Dey (ORCID: https://orcid.org/0000-0002-9166-3349)
- Mintu Mondal (ORCID: https://orcid.org/0000-0002-1282-1581)
- Samir Chattopadhyay (ORCID: https://orcid.org/0000-0003-4759-0362)
- Puspendu Das
- Sudip Malik (ORCID: https://orcid.org/0000-0001-5358-5653)
- Md Estak Ahmed (ORCID: https://orcid.org/0000-0002-0817-2099)
- Abhijit Nayek (ORCID: https://orcid.org/0000-0001-9981-4271)
- Sk Mustak Ahamed
Institutions
- Indian Association for the Cultivation of Science (IN)
Publication Details
- Journal
- Chemistry - A European Journal
- Published
- 2024-08-29
- DOI
- https://doi.org/10.1002/chem.202403011
- Citations
- 2
- Primary Topic
- Metalloenzymes and iron-sulfur proteins
- Type
- article
- Field-Weighted Citation Impact
- 0.20
Funders
- Department of Science and Technology, Ministry of Science and Technology, India