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Photocatalytic hydrogen production by biomimetic indium sulfide using Mimosa pudica leaves as template

Carrasco-Jaim, Omar A. ; Ahumada-Lazo, Ruben ; Clark, Pip C.J. ; Gómez-Solis, Christian ; Fairclough, Simon M. ; Haigh, Sarah J. ; Leontiadou, Marina A. ; Handrup, Karsten LU ; Torres-Martínez, Leticia M. and Flavell, Wendy R. (2019) In International Journal of Hydrogen Energy 44(5). p.2770-2783
Abstract

Biomimetic sulfur-deficient indium sulfide (In2.77S4) was synthesized by a template-assisted hydrothermal method using leaves of Mimosa pudica as a template for the first time. The effect of this template in modifying the morphology of the semiconductor particles was determined by physicochemical characterization, revealing an increase in surface area, decrease in microsphere size and pore size and an increase in pore volume density in samples synthesized with the template. X-ray photoelectron spectroscopy (XPS) analysis showed the presence of organic sulfur (S–O/S–C/S–H) and sulfur oxide species (–SO2, SO3
2−, SO4
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Biomimetic sulfur-deficient indium sulfide (In2.77S4) was synthesized by a template-assisted hydrothermal method using leaves of Mimosa pudica as a template for the first time. The effect of this template in modifying the morphology of the semiconductor particles was determined by physicochemical characterization, revealing an increase in surface area, decrease in microsphere size and pore size and an increase in pore volume density in samples synthesized with the template. X-ray photoelectron spectroscopy (XPS) analysis showed the presence of organic sulfur (S–O/S–C/S–H) and sulfur oxide species (–SO2, SO3
2−, SO4
2−) at the surface of the indium sulfide in samples synthesized with the template. Biomimetic indium sulfide also showed significant amounts of Fe introduced as a contaminant present on the Mimosa pudica leaves. The presence of these sulfur and iron species favors the photocatalytic activity for hydrogen production by their acting as a sacrificial reagent and promoting water oxidation on the surface of the templated particles, respectively. The photocatalytic hydrogen production rates over optimally-prepared biomimetic indium sulfide and indium sulfide synthesized without the organic template were 73 and 22 μmol g−1, respectively, indicating an improvement by a factor of three in the templated sample.

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author
; ; ; ; ; ; ; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
InS, Photocatalytic hydrogen production, Template-assisted hydrothermal, XPS analysis
in
International Journal of Hydrogen Energy
volume
44
issue
5
pages
14 pages
publisher
Elsevier
external identifiers
  • scopus:85059463437
ISSN
0360-3199
DOI
10.1016/j.ijhydene.2018.12.043
language
English
LU publication?
yes
id
17b61b69-3127-4517-b2e5-6fdd5cea7375
date added to LUP
2019-01-22 09:24:02
date last changed
2022-04-25 20:22:54
@article{17b61b69-3127-4517-b2e5-6fdd5cea7375,
  abstract     = {{<p>Biomimetic sulfur-deficient indium sulfide (In<sub>2.77</sub>S<sub>4</sub>) was synthesized by a template-assisted hydrothermal method using leaves of Mimosa pudica as a template for the first time. The effect of this template in modifying the morphology of the semiconductor particles was determined by physicochemical characterization, revealing an increase in surface area, decrease in microsphere size and pore size and an increase in pore volume density in samples synthesized with the template. X-ray photoelectron spectroscopy (XPS) analysis showed the presence of organic sulfur (S–O/S–C/S–H) and sulfur oxide species (–SO<sub>2</sub>, SO<sub>3</sub><br>
                            <sup>2−</sup>, SO<sub>4</sub><br>
                            <sup>2−</sup>) at the surface of the indium sulfide in samples synthesized with the template. Biomimetic indium sulfide also showed significant amounts of Fe introduced as a contaminant present on the Mimosa pudica leaves. The presence of these sulfur and iron species favors the photocatalytic activity for hydrogen production by their acting as a sacrificial reagent and promoting water oxidation on the surface of the templated particles, respectively. The photocatalytic hydrogen production rates over optimally-prepared biomimetic indium sulfide and indium sulfide synthesized without the organic template were 73 and 22 μmol g<sup>−1</sup>, respectively, indicating an improvement by a factor of three in the templated sample.</p>}},
  author       = {{Carrasco-Jaim, Omar A. and Ahumada-Lazo, Ruben and Clark, Pip C.J. and Gómez-Solis, Christian and Fairclough, Simon M. and Haigh, Sarah J. and Leontiadou, Marina A. and Handrup, Karsten and Torres-Martínez, Leticia M. and Flavell, Wendy R.}},
  issn         = {{0360-3199}},
  keywords     = {{InS; Photocatalytic hydrogen production; Template-assisted hydrothermal; XPS analysis}},
  language     = {{eng}},
  month        = {{01}},
  number       = {{5}},
  pages        = {{2770--2783}},
  publisher    = {{Elsevier}},
  series       = {{International Journal of Hydrogen Energy}},
  title        = {{Photocatalytic hydrogen production by biomimetic indium sulfide using Mimosa pudica leaves as template}},
  url          = {{http://dx.doi.org/10.1016/j.ijhydene.2018.12.043}},
  doi          = {{10.1016/j.ijhydene.2018.12.043}},
  volume       = {{44}},
  year         = {{2019}},
}