Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Immobilization of a Molecular Ruthenium Catalyst on Hematite Nanorod Arrays for Water Oxidation with Stable Photocurrent
KTH, School of Chemical Science and Engineering (CHE), Chemistry, Organic Chemistry.
KTH, School of Chemical Science and Engineering (CHE), Chemistry, Organic Chemistry.ORCID iD: 0000-0003-3455-0855
KTH, School of Chemical Science and Engineering (CHE), Chemistry, Organic Chemistry.
KTH, School of Chemical Science and Engineering (CHE), Chemistry, Organic Chemistry.
Show others and affiliations
2015 (English)In: ChemSusChem, ISSN 1864-5631, E-ISSN 1864-564X, Vol. 8, no 19, 3242-3247 p.Article in journal (Refereed) Published
Abstract [en]

Photoelectrochemical (PEC) cells for light-driven water splitting are prepared using hematite nanorod arrays on conductive glass as the photoanode. These devices improve the photocurrent of the hematite-based photoanode for water splitting, owing to fewer surface traps and decreased electron recombination resulting from the one-dimensional structure. By employing a molecular ruthenium co-catalyst, which contains a strong 2,6-pyridine-dicarboxylic acid anchoring group at the hematite photoanode, the photocurrent of the PEC cell is enhanced with high stability for over 10000s in a 1M KOH solution. This approach can pave a route for combining one-dimensional nanomaterials and molecular catalysts to split water with high efficiency and stability.

Place, publisher, year, edition, pages
2015. Vol. 8, no 19, 3242-3247 p.
Keyword [en]
hematite, heterogeneous catalysis, nanorods, ruthenium, water oxidation
National Category
Physical Chemistry
Identifiers
URN: urn:nbn:se:kth:diva-174709DOI: 10.1002/cssc.201500730ISI: 000362729800009Scopus ID: 2-s2.0-84943583520OAI: oai:DiVA.org:kth-174709DiVA: diva2:868509
Funder
Swedish Research CouncilKnut and Alice Wallenberg FoundationSwedish Energy Agency
Note

QC 20151111

Available from: 2015-11-11 Created: 2015-10-07 Last updated: 2017-12-01Bibliographically approved
In thesis
1. Design of Water Splitting Devices via Molecular Engineering
Open this publication in new window or tab >>Design of Water Splitting Devices via Molecular Engineering
2016 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

Converting solar energyto fuels such as hydrogen by the reaction of water splitting is a promising solution for the future sustainable energy systems. The theme of this thesis is to design water splitting devices via molecular engineering; it concerns the studies of both electrochemical-driven and photo-electrochemical driven molecular functional devices for water splitting.

The first chapter presents a general introduction about Solar Fuel Conversion. It concerns molecular water splitting catalysts, light harvesting materials and fabrication methods of water splitting devices.

The second chapter describes an electrode by immobilizing a molecular water oxidation catalyston carbon nanotubes through the hydrophobic interaction. This fabrication method is corresponding to the question: “How to employ catalysts in functional devices without affecting their performances?”

In the third chapter, molecular water oxidation catalysts were successfully immobilized on glassy carbon electrode surface via electrochemical polymerization method. The O-O bond formation pathways of catalysts on electrode surfaces were studied. This kinetic studyis corresponding to the question: “How to get kinetic information of RDS whena catalyst is immobilized on the electrode surface?”

Chapter four explores molecular water oxidation catalysts immobilized on dye-sensitized TiO2 electrodeand Fe2O3 semiconductor electrode via different fabrication methods. The reasons of photocurrent decay are discussed and two potential solutions are provided. These studies are corresponding to the question: “How to improvethe stability of photo-electrodes?”

Finally, in the last chapter, two novel Pt-free Z-schemed molecular photo-electrochemical cells with both photoactive cathode and photoactive anode for visible light driven water splitting driven were demonstrated. These studies are corresponding to the question: “How to utilizethe concept of Z-schemein photosynthesis to fabricate Pt-free molecular based PEC cells?

Place, publisher, year, edition, pages
Stockholm: KTH Royal Institute of Technology, 2016. 92 p.
Series
TRITA-CHE-Report, ISSN 1654-1081 ; 2016:6
Keyword
electrochemical-driven water splitting, artificial photosynthesis, molecular catalysts
National Category
Other Chemistry Topics
Research subject
Chemistry
Identifiers
urn:nbn:se:kth:diva-181107 (URN)978-91-7595-841-5 (ISBN)
Public defence
2016-02-26, F3, Lindstedtsvägen 26, KTH, Stockholm., 10:00 (English)
Opponent
Supervisors
Funder
Swedish Energy AgencySwedish Research CouncilKnut and Alice Wallenberg Foundation
Note

QC 20160129

Available from: 2016-01-29 Created: 2016-01-29 Last updated: 2017-06-01Bibliographically approved

Open Access in DiVA

No full text

Other links

Publisher's full textScopus

Authority records BETA

Li, FushengSun, Licheng

Search in DiVA

By author/editor
Fan, KeLi, FushengWang, LeiQuentin, DanielGabrielsson, ErikSun, Licheng
By organisation
Organic Chemistry
In the same journal
ChemSusChem
Physical Chemistry

Search outside of DiVA

GoogleGoogle Scholar

doi
urn-nbn

Altmetric score

doi
urn-nbn
Total: 35 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf