SciAct
Toggle navigation
  • EN
  • RU

Sections:

  • Articles
  • Books
  • Conference attendances
  • Conference theses
  • Patents

Colloidal FeIII, MnIII, CoIII and CuII Hydroxides Stabilized by Starch as Catalysts of Water Oxidation Reaction with One Electron Oxidant Ru(bpy)33+ Full article

Общее Language: Английский, Genre: Full article,
Status: Published, Source type: Original
Journal ChemPhysChem
ISSN: 1439-4235 , E-ISSN: 1439-7641
Output data Year: 2019, Volume: 20, Number: 3, Pages: 410-421 Pages count : 12 DOI: 10.1002/cphc.201800957
Tags water splitting; one-electron oxidants; transition metal hydroxides; catalytic activity; oxygen evolution reaction
Authors Chikunov Andrei S. 1 , Taran Oxana P. 1,2,3 , Pyshnaya Inna A. 4 , Parmon Valentin N. 1
Affiliations
1 Boreskov Institute of Catalysis (BIC SB RAS) 630090, Novosibirsk, Lavrentieva ave. 5 (Russian Federation)
2 Institute of Chemistry and Chemical Technilogy SB RAS (ICCT SB RAS) 660036, Krasnoyarsk, Akademgorodok st. 50-24 (Russian Federation)
3 Siberian Federal University 660041, Krasnoyarsk, Svobodny ave. 79 (Russian Federation)
4 Institute of Chemical Biology and Fundamental Medicine SB RAS (ICBFM SB RAS)

Funding (3)

1 Federal Agency for Scientific Organizations 0303-2016-0012 (V.47.1.4.)
2 Russian Foundation for Basic Research 15-29-01275
3 Federal Agency for Scientific Organizations 0356-2016-0503

Abstract: Colloidal catalysts for water oxidation to dioxygen, which are stable on storage and under the reaction conditions, are synthesized based on CoIII, MnIII, FeIII and CuII hydroxides. Stabilization of the colloids with dextrated starch allows the process of hydroxide ageing to be stopped at the stage of the formation of primary nuclei (ca. 2–3 nm from TEM data). Molecular mechanics and DLS studies indicate the core‐shell type structure of the catalysts, where the hydroxide core is stabilized by the molecular starch network (ca. 5–7 nm). The colloidal catalysts are highly effective to oxidation of water with one electron oxidant Ru(bpy)33+ at pH 7 to 10. The influence of pH, catalyst concentration and buffer nature on the oxygen yield is studied. The maximal yields are 72, 53 and 78 % over Fe‐, Mn‐ and Co‐containing catalysts, respectively, and TON are 7.8; 54 and 360, respectively. The Cu‐containing catalyst is poorly effective to water oxidation (the maximal yield is 28 % O2). The developed catalysts are of interest for kinetic studies of the mechanism of water oxidation using stopped‐flow technique and as precursors for anchoring nanosize hydroxides onto various supports in order to develop biomimetic systems for artificial photosynthesis.
Cite: Chikunov A.S. , Taran O.P. , Pyshnaya I.A. , Parmon V.N.
Colloidal FeIII, MnIII, CoIII and CuII Hydroxides Stabilized by Starch as Catalysts of Water Oxidation Reaction with One Electron Oxidant Ru(bpy)33+
ChemPhysChem. 2019. V.20. N3. P.410-421. DOI: 10.1002/cphc.201800957 publication_identifier_short.wos_identifier_type publication_identifier_short.scopus_identifier_type publication_identifier_short.rinz_identifier_type
Files: Full text from publisher
Dates:
Submitted: Oct 12, 2018
Accepted: Dec 6, 2018
Published online: Dec 6, 2018
Published print: Feb 4, 2019
Identifiers:
publication_identifier.wos_identifier_type WOS:000457714700010
publication_identifier.scopus_identifier_type 2-s2.0-85059583212
publication_identifier.rinz_identifier_type 38700991
publication_identifier.accession_number_identifier_type 2019:41225
Altmetrics: