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Effect of Mn incorporation on the photoelectrochemical properties of BiVO
Ist Teil von
New journal of chemistry, 2022-02, Vol.46 (6), p.2875-2886
Erscheinungsjahr
2022
Link zum Volltext
Quelle
Alma/SFX Local Collection
Beschreibungen/Notizen
BiVO
4
is a promising photoanode material for photoelectrochemical water splitting applications due to its narrow band gap,
i.e.
, ∼2.4 eV, suitable band-edge positions, non-toxicity, and high stability. Here, we report the synthesis of Mn
2+
-doped BiVO
4
with varying concentrations of Mn
2+
(0.2-1.0%) to improve the charge-transport properties of the catalyst. The addition of Mn enables forbidden d-d transitions, which are utilized to slow down the charge-carrier recombination and increase the efficiency. The highest efficiency was achieved in the case of the 1.0% Mn
2+
-BiVO
4
photoanode, which exhibits a photocurrent density of 1.163 mA cm
−2
at 1.23 V and 1.56 mA cm
−2
at 1.4 V
vs.
RHE. The enhanced photoelectrochemical performance of Mn
2+
-BiVO
4
implies a higher charge-carrier separation and an improved electrical conductivity. This suggests that Mn
2+
-doped BiVO
4
may be used as a promising photoanode in future energy-conversion devices.
Mn
2+
-BiVO
4
photoanodes (Mn
2+
= 0.2-1%) to improve the charge-carrier separation and electrical conductivity of BiVO
4
are reported.
Sprache
–
Identifikatoren
ISSN: 1144-0546
eISSN: 1369-9261
DOI: 10.1039/d1nj05292f
Titel-ID: cdi_rsc_primary_d1nj05292f
Format
–
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