SwePub
Sök i LIBRIS databas

  Extended search

WFRF:(Ghamgosar Pedram 1979 )
 

Search: WFRF:(Ghamgosar Pedram 1979 ) > Electronically-Coup...

Electronically-Coupled Phase Boundaries in α‑Fe2O3/Fe3O4 Nanocomposite Photoanodes for Enhanced Water Oxidation

Leduc, Jennifer (author)
University of Cologne, Institute of Inorganic Chemistry, University of Cologne, 50939, Cologne, Germany
Goenuellue, Yakup (author)
University of Cologne, Institute of Inorganic Chemistry, University of Cologne, 50939, Cologne, Germany
Ghamgosar, Pedram, 1979- (author)
Luleå tekniska universitet,Materialvetenskap
show more...
You, Shujie (author)
Luleå tekniska universitet,Materialvetenskap
Mouzon, Johanne (author)
Luleå tekniska universitet,Kemiteknik
Choi, Heechae (author)
University of Cologne, Institute of Inorganic Chemistry, University of Cologne, 50939, Cologne, Germany
Vomiero, Alberto (author)
Luleå tekniska universitet,Materialvetenskap
Grosch, Matthias (author)
University of Cologne, Institute of Inorganic Chemistry, University of Cologne, 50939, Cologne, Germany
Mathur, Sanjay (author)
University of Cologne, Institute of Inorganic Chemistry, University of Cologne, 50939, Cologne, Germany
show less...
 (creator_code:org_t)
2019-01-07
2019
English.
In: ACS APPLIED NANO MATERIALS. - : American Chemical Society (ACS). - 2574-0970. ; 2:1, s. 334-342
Related links:
https://urn.kb.se/re...
show more...
https://doi.org/10.1...
show less...
  • Journal article (peer-reviewed)
Abstract Subject headings
Close  
  • Photoelectrochemical (PEC) water splittingreactions are promising for sustainable hydrogen productionfrom renewable sources. We report here, the preparation of α-Fe2O3/Fe3O4 composite films via a single-step chemical vapordeposition of [Fe(OtBu)3]2 and their use as efficient photoanode materials in PEC setups. Film thickness and phase segregation was controlled by varying the deposition time and corroborated through cross-section Raman spectroscopy and scanning electron microscopy. The highest water oxidationactivity (0.48 mA/cm2 at 1.23 V vs RHE) using intermittent AM 1.5 G (100 mW/cm2) standard illumination was found forhybrid films with a thickness of 11 μm. This phenomenon is attributed to an improved electron transport resulting from ahigher magnetite content toward the substrate interface and an increased light absorption due to the hematite layer mainly located at the top surface of the film. The observed high efficiency of α-Fe2O3/Fe3O4 nanocomposite photoanodes is attributed to the close proximity and establishment of 3D interfaces between the weakly ferro- (Fe2O3) and ferrimagnetic (Fe3O4) oxides, which in view of their differential chemical constitution andvalence states of Fe ions (Fe2+/Fe3+) can enhance the charge separation and thus the overall electrical conductivity of the layer.

Subject headings

TEKNIK OCH TEKNOLOGIER  -- Materialteknik -- Kompositmaterial och -teknik (hsv//swe)
ENGINEERING AND TECHNOLOGY  -- Materials Engineering -- Composite Science and Engineering (hsv//eng)
TEKNIK OCH TEKNOLOGIER  -- Kemiteknik -- Kemiska processer (hsv//swe)
ENGINEERING AND TECHNOLOGY  -- Chemical Engineering -- Chemical Process Engineering (hsv//eng)

Keyword

solar water splitting
valence dynamics
magnetite
Raman
single-source CVD
heterostructures
Experimentell fysik
Experimental Physics
Chemical Technology
Kemisk teknologi

Publication and Content Type

ref (subject category)
art (subject category)

Find in a library

To the university's database

Kungliga biblioteket hanterar dina personuppgifter i enlighet med EU:s dataskyddsförordning (2018), GDPR. Läs mer om hur det funkar här.
Så här hanterar KB dina uppgifter vid användning av denna tjänst.

 
pil uppåt Close

Copy and save the link in order to return to this view