Jump to main content
Jump to site search

Issue 9, 2018
Previous Article Next Article

Two-electron oxidation of water to form hydrogen peroxide catalysed by silicon-porphyrins

Author affiliations

Abstract

The second most earth abundant atom incorporated meso-tetrapyridylporphyrinatesilicon(IV) (SiTPyP) as an electrochemical catalyst was newly synthesized. The two axially ligated water molecules on SiTPyP and the four meso-substituted pyridyl nitrogens suffer eight-step protonations and deprotonations. Our detailed pKa study indicated that the two axially ligated water molecules were fully deprotonated to exist as O–Si–O under the condition of pH > 2. Under basic conditions, SiTPyP(O)2 exerted the two-electron oxidation of water to form hydrogen peroxide as the primary product in aqueous acetonitrile, which was initiated through a one-electron oxidation process on the electrode with faradaic yield of 84–92%.

Graphical abstract: Two-electron oxidation of water to form hydrogen peroxide catalysed by silicon-porphyrins

Back to tab navigation

Supplementary files

Publication details

The article was received on 02 Mar 2018, accepted on 23 Mar 2018 and first published on 27 Mar 2018


Article type: Paper
DOI: 10.1039/C8SE00102B
Citation: Sustainable Energy Fuels, 2018,2, 1966-1973
  •   Request permissions

    Two-electron oxidation of water to form hydrogen peroxide catalysed by silicon-porphyrins

    S. N. Remello, F. Kuttassery, S. Mathew, A. Thomas, D. Yamamoto, Y. Nabetani, K. Sano, H. Tachibana and H. Inoue, Sustainable Energy Fuels, 2018, 2, 1966
    DOI: 10.1039/C8SE00102B

Search articles by author

Spotlight

Advertisements