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Highly efficient hydrogen generation of BiI3 nanoplates decorated with Ag nanoparticles.

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Title: Highly efficient hydrogen generation of BiI3 nanoplates decorated with Ag nanoparticles.
Authors: Diaz-Torres, L.A.1 ditlacio@cio.mx, Gomez-Solis, C.1,2, Oliva, J.3, Coutino-Gonzalez, E.4
Source: International Journal of Hydrogen Energy. Aug2018, Vol. 43 Issue 33, p15962-15974. 13p.
Subjects: Hydrogen production, Silver nanoparticles, Photocatalysts, Hydrogen evolution reactions, Carbon films
Abstract: This work presents the photocatalytic hydrogen generation of BiI 3 films when they are exposed under simulated solar irradiation. Those films were fabricated by a simple bath chemical deposition method. The images of Scanning electron microscopy show that the BiI 3 films are formed by polycrystalline particles with hexagonal shape and a closer inspection shows that nanoplates grown into them. The performance for the hydrogen generation of BiI 3 films synthesized with different times (from 1 to 3 h), BiI 3 films decorated with silver nanoparticles (BiI 3 -Ag) and BiI 3 powders were compared. We found that the presence of Ag nanoparticles in the BiI 3 films increased the hydrogen generation from 9 mmol/g·h to 14 mmol/g·h because these nanoparticles improved electron conductivity, reduced the amount of defects in the BiI 3 films, raised the optical absorption, and produced higher photocurrents (with respect to the BiI 3 films without nanoparticles) as confirmed by electrochemical experiments. On the contrast, the BiI 3 powders had a poor hydrogen generation rate of only 0.5 mmol/g·h, this was due to the fact that they are formed by nanoplates 10 times bigger than these ones grown on the BiI 3 films, consequently, they had lower surface area than the nanoplates in the BiI 3 films. A possible mechanism for the hydrogen generation by the BiI 3 and BiI 3 -Ag films is also discussed. [ABSTRACT FROM AUTHOR]
Copyright of International Journal of Hydrogen Energy is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
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DbLabel: Engineering Source
An: 131131149
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PubType: Academic Journal
PubTypeId: academicJournal
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  Data: Highly efficient hydrogen generation of BiI3 nanoplates decorated with Ag nanoparticles.
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  Data: <searchLink fieldCode="AR" term="%22Diaz-Torres%2C+L%2EA%2E%22">Diaz-Torres, L.A.</searchLink><relatesTo>1</relatesTo><i> ditlacio@cio.mx</i><br /><searchLink fieldCode="AR" term="%22Gomez-Solis%2C+C%2E%22">Gomez-Solis, C.</searchLink><relatesTo>1,2</relatesTo><br /><searchLink fieldCode="AR" term="%22Oliva%2C+J%2E%22">Oliva, J.</searchLink><relatesTo>3</relatesTo><br /><searchLink fieldCode="AR" term="%22Coutino-Gonzalez%2C+E%2E%22">Coutino-Gonzalez, E.</searchLink><relatesTo>4</relatesTo>
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  Data: <searchLink fieldCode="JN" term="%22International+Journal+of+Hydrogen+Energy%22">International Journal of Hydrogen Energy</searchLink>. Aug2018, Vol. 43 Issue 33, p15962-15974. 13p.
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  Data: <searchLink fieldCode="DE" term="%22Hydrogen+production%22">Hydrogen production</searchLink><br /><searchLink fieldCode="DE" term="%22Silver+nanoparticles%22">Silver nanoparticles</searchLink><br /><searchLink fieldCode="DE" term="%22Photocatalysts%22">Photocatalysts</searchLink><br /><searchLink fieldCode="DE" term="%22Hydrogen+evolution+reactions%22">Hydrogen evolution reactions</searchLink><br /><searchLink fieldCode="DE" term="%22Carbon+films%22">Carbon films</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: This work presents the photocatalytic hydrogen generation of BiI 3 films when they are exposed under simulated solar irradiation. Those films were fabricated by a simple bath chemical deposition method. The images of Scanning electron microscopy show that the BiI 3 films are formed by polycrystalline particles with hexagonal shape and a closer inspection shows that nanoplates grown into them. The performance for the hydrogen generation of BiI 3 films synthesized with different times (from 1 to 3 h), BiI 3 films decorated with silver nanoparticles (BiI 3 -Ag) and BiI 3 powders were compared. We found that the presence of Ag nanoparticles in the BiI 3 films increased the hydrogen generation from 9 mmol/g·h to 14 mmol/g·h because these nanoparticles improved electron conductivity, reduced the amount of defects in the BiI 3 films, raised the optical absorption, and produced higher photocurrents (with respect to the BiI 3 films without nanoparticles) as confirmed by electrochemical experiments. On the contrast, the BiI 3 powders had a poor hydrogen generation rate of only 0.5 mmol/g·h, this was due to the fact that they are formed by nanoplates 10 times bigger than these ones grown on the BiI 3 films, consequently, they had lower surface area than the nanoplates in the BiI 3 films. A possible mechanism for the hydrogen generation by the BiI 3 and BiI 3 -Ag films is also discussed. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of International Journal of Hydrogen Energy is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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RecordInfo BibRecord:
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      – Type: doi
        Value: 10.1016/j.ijhydene.2018.06.182
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      – Code: eng
        Text: English
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        PageCount: 13
        StartPage: 15962
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        Type: general
      – SubjectFull: Silver nanoparticles
        Type: general
      – SubjectFull: Photocatalysts
        Type: general
      – SubjectFull: Hydrogen evolution reactions
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      – SubjectFull: Carbon films
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              Text: Aug2018
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              Y: 2018
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