A nickel (II) PY5 complex as an electrocatalyst for water oxidation
(2016) In Journal of Catalysis 335. p.72-78- Abstract
- A Ni-PY5 [PY5 = 2,6-bis(1,1-bis(2-pyridyl)ethyl)pyridine)] complex has been found to act as an electrocatalyst for oxidizing water to dioxygen in aqueous phosphate buffer solutions. The rate of water oxidation catalyzed by the Ni-PY5 is remarkably enhanced by the proton acceptor base HPO42−, with rate constant of 1820 M−1 s−1. Controlled potential bulk electrolysis with Ni-PY5 at pH 10.8 under an applied potential of 1.5 V vs. normal hydrogen electrode (NHE) resulted in dioxygen formation with a high faradaic efficiency over 90%. A detailed mechanistic study identifies the water nucleophilic attack pathway for water oxidation catalysis.
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/11887302-41f9-40d2-a6cc-1b58847d3a59
- author
- organization
- publishing date
- 2016-03-01
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Journal of Catalysis
- volume
- 335
- pages
- 7 pages
- publisher
- Elsevier
- external identifiers
-
- scopus:84954413362
- wos:000371098200007
- ISSN
- 0021-9517
- DOI
- 10.1016/j.jcat.2015.12.003
- language
- English
- LU publication?
- yes
- id
- 11887302-41f9-40d2-a6cc-1b58847d3a59
- date added to LUP
- 2016-04-14 06:07:00
- date last changed
- 2022-04-08 20:02:38
@article{11887302-41f9-40d2-a6cc-1b58847d3a59, abstract = {{A Ni-PY5 [PY5 = 2,6-bis(1,1-bis(2-pyridyl)ethyl)pyridine)] complex has been found to act as an electrocatalyst for oxidizing water to dioxygen in aqueous phosphate buffer solutions. The rate of water oxidation catalyzed by the Ni-PY5 is remarkably enhanced by the proton acceptor base HPO42−, with rate constant of 1820 M−1 s−1. Controlled potential bulk electrolysis with Ni-PY5 at pH 10.8 under an applied potential of 1.5 V vs. normal hydrogen electrode (NHE) resulted in dioxygen formation with a high faradaic efficiency over 90%. A detailed mechanistic study identifies the water nucleophilic attack pathway for water oxidation catalysis.}}, author = {{Wang, Lei and Duan, Lele and Ambre, Ram B. and Daniel, Quentin and Chen, Hong and Sun, Junliang and Das, Biswanath and Thapper, Anders and Uhlig, Jens and Dinér, Peter and Sun, Licheng}}, issn = {{0021-9517}}, language = {{eng}}, month = {{03}}, pages = {{72--78}}, publisher = {{Elsevier}}, series = {{Journal of Catalysis}}, title = {{A nickel (II) PY5 complex as an electrocatalyst for water oxidation}}, url = {{http://dx.doi.org/10.1016/j.jcat.2015.12.003}}, doi = {{10.1016/j.jcat.2015.12.003}}, volume = {{335}}, year = {{2016}}, }