Urchin-like TiO2 structures decorated with lanthanide-doped Bi2S3 quantum dots to boost hydrogen photogeneration performance

Magdalena Miodyńska , Alicja Mikołajczyk , Beata Bajorowicz , Julia Zwara , Tomasz Klimczuk , Wojciech Lisowski , Grzegorz Trykowski , Henry P. Pinto , Adriana Zaleska-Medynska

Abstract

The formation of heterojunctions between wide- and narrow-bandgap photocatalysts is commonly employed to boost the efficiency of photocatalytic hydrogen generation. Herein, the photoactivity of urchin-like rutile particles is increased by decorating with pristine as well as Er- or Yb-doped Bi2S3 quantum dots (QDs) at varied QD loadings (1–20 wt%) and doping degrees (1–15 mol%), and the best hydrogen evolution performance is achieved at Er and Yb contents of 10 mol%. Specifically, a hydrogen productivity of 1576.7 μmol gcat−1 is achieved after 20-h irradiation for TiO2 decorated by 10 mol% Yb-doped Bi2S3 QDs. Theoretical calculations show that the introduction of defects into the Bi2S3 lattice through Er/Yb doping promotes the creation of new energy levels and facilitates the transport of photogenerated charges during photocatalysis.
Publication typeIn press (online first, early view)
Author Magdalena Miodyńska (FCh / DET / LPh)
Magdalena Miodyńska,,
- Laboratory of Photocatalysis
, Alicja Mikołajczyk (FCh / DEChR / LECh)
Alicja Mikołajczyk,,
- Laboratory of Environmental Chemometrics
, Beata Bajorowicz (FCh / DET / LPh)
Beata Bajorowicz,,
- Laboratory of Photocatalysis
, Julia Zwara (FCh / DET / LPh)
Julia Zwara,,
- Laboratory of Photocatalysis
, Tomasz Klimczuk
Tomasz Klimczuk,,
-
, Wojciech Lisowski
Wojciech Lisowski,,
-
, Grzegorz Trykowski
Grzegorz Trykowski,,
-
, Henry P. Pinto
Henry P. Pinto,,
-
, Adriana Zaleska-Medynska (FCh / DET / LPh)
Adriana Zaleska-Medynska,,
- Laboratory of Photocatalysis
Journal seriesApplied Catalysis B: Environmental, [Applied Catalysis B: Environmental], ISSN 0926-3373, e-ISSN 1873-3883, (N/A 200 pkt)
Issue year2020
Noonline first
Pages1-47
Publication size in sheets2.3
ASJC Classification1503 Catalysis; 1508 Process Chemistry and Technology; 2300 General Environmental Science
DOIDOI:10.1016/j.apcatb.2020.118962
URL https://doi.org/10.1016/j.apcatb.2020.118962
Languageen angielski
LicenseOther; published final; Uznanie Autorstwa - Użycie Niekomercyjne - Bez utworów zależnych (CC-BY-NC-ND); with publication
Score (nominal)200
Score sourcejournalList
ScoreMinisterial score = 200.0, 20-04-2020, ArticleFromJournal
Publication indicators Scopus SNIP (Source Normalised Impact per Paper): 2018 = 2.568; WoS Impact Factor: 2018 = 14.229 (2) - 2018=12.176 (5)
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