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Synthesis, Growth Mechanism, and Photocatalytic Properties of Metallic-Bi/Bi13S18Br2 Nano-Bell Heterostructures

Cabona, Anna ; Toso, Stefano LU ; Griesi, Andrea ; Rizzo, Martina ; Ferri, Michele ; Rusch, Pascal ; Divitini, Giorgio ; Pérez-Prieto, Julia ; Galian, Raquel E. and Kriegel, Ilka , et al. (2025) In ACS Materials Letters 7(5). p.1707-1716
Abstract

We report the synthesis of bell-shaped Bi/Bi13S18Br2 metal/semiconductor heterostructures as a photocatalyst based on nontoxic and Earth-abundant elements. Their unique morphology arises from a multistep growth process, involving (1) the nucleation of Bi13S18Br2 nanorods, (2) the reduction of a metallic-Bi domain on their surface induced by N,N-didodecylmethylamine, and (3) the heterostructure accretion by a localized reaction at the Bi/Bi13S18Br2 interface promoted by Ostwald ripening. These heterostructures display remarkable stability in polar solvents, remaining almost unaffected by prolonged exposure to isopropanol and water, and... (More)

We report the synthesis of bell-shaped Bi/Bi13S18Br2 metal/semiconductor heterostructures as a photocatalyst based on nontoxic and Earth-abundant elements. Their unique morphology arises from a multistep growth process, involving (1) the nucleation of Bi13S18Br2 nanorods, (2) the reduction of a metallic-Bi domain on their surface induced by N,N-didodecylmethylamine, and (3) the heterostructure accretion by a localized reaction at the Bi/Bi13S18Br2 interface promoted by Ostwald ripening. These heterostructures display remarkable stability in polar solvents, remaining almost unaffected by prolonged exposure to isopropanol and water, and exhibit high photocatalytic efficiency for the degradation of organic dyes (i.e., Rhodamine B and Methylene Blue) under visible-light irradiation, with good recyclability. Additionally, preliminary tests demonstrate CO2 reduction capabilities, which make these heterostructures promising for both the photocatalytic degradation of pollutants and photoelectrochemical CO2 conversion. The straightforward synthesis process and the use of nontoxic and Earth-abundant elements offer significant potential for sustainable energy conversion technologies.

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organization
publishing date
type
Contribution to journal
publication status
published
subject
in
ACS Materials Letters
volume
7
issue
5
pages
10 pages
publisher
The American Chemical Society (ACS)
external identifiers
  • scopus:105001588405
  • pmid:40343141
ISSN
2639-4979
DOI
10.1021/acsmaterialslett.5c00043
language
English
LU publication?
yes
id
d05b625d-affb-45c3-84d6-d26abbbb8832
date added to LUP
2025-09-04 09:26:55
date last changed
2025-10-14 12:44:17
@article{d05b625d-affb-45c3-84d6-d26abbbb8832,
  abstract     = {{<p>We report the synthesis of bell-shaped Bi/Bi<sub>13</sub>S<sub>18</sub>Br<sub>2</sub> metal/semiconductor heterostructures as a photocatalyst based on nontoxic and Earth-abundant elements. Their unique morphology arises from a multistep growth process, involving (1) the nucleation of Bi<sub>13</sub>S<sub>18</sub>Br<sub>2</sub> nanorods, (2) the reduction of a metallic-Bi domain on their surface induced by N,N-didodecylmethylamine, and (3) the heterostructure accretion by a localized reaction at the Bi/Bi<sub>13</sub>S<sub>18</sub>Br<sub>2</sub> interface promoted by Ostwald ripening. These heterostructures display remarkable stability in polar solvents, remaining almost unaffected by prolonged exposure to isopropanol and water, and exhibit high photocatalytic efficiency for the degradation of organic dyes (i.e., Rhodamine B and Methylene Blue) under visible-light irradiation, with good recyclability. Additionally, preliminary tests demonstrate CO<sub>2</sub> reduction capabilities, which make these heterostructures promising for both the photocatalytic degradation of pollutants and photoelectrochemical CO<sub>2</sub> conversion. The straightforward synthesis process and the use of nontoxic and Earth-abundant elements offer significant potential for sustainable energy conversion technologies.</p>}},
  author       = {{Cabona, Anna and Toso, Stefano and Griesi, Andrea and Rizzo, Martina and Ferri, Michele and Rusch, Pascal and Divitini, Giorgio and Pérez-Prieto, Julia and Galian, Raquel E. and Kriegel, Ilka and Manna, Liberato}},
  issn         = {{2639-4979}},
  language     = {{eng}},
  number       = {{5}},
  pages        = {{1707--1716}},
  publisher    = {{The American Chemical Society (ACS)}},
  series       = {{ACS Materials Letters}},
  title        = {{Synthesis, Growth Mechanism, and Photocatalytic Properties of Metallic-Bi/Bi<sub>13</sub>S<sub>18</sub>Br<sub>2</sub> Nano-Bell Heterostructures}},
  url          = {{http://dx.doi.org/10.1021/acsmaterialslett.5c00043}},
  doi          = {{10.1021/acsmaterialslett.5c00043}},
  volume       = {{7}},
  year         = {{2025}},
}