Enhanced photoelectrocatalytic performance of α-Fe(2)O(3) thin films by surface plasmon resonance of Au nanoparticles coupled with surface passivation by atom layer deposition of Al(2)O(3)

The short lifetime of photogenerated charge carriers of hematite (α-Fe(2)O(3)) thin films strongly hindered the PEC performances. Herein, α-Fe(2)O(3) thin films with surface nanowire were synthesized by electrodeposition and post annealing method for photoelectrocatalytic (PEC) water splitting. The...

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Autores principales: Liu, Yuting, Xu, Zhen, Yin, Min, Fan, Haowen, Cheng, Weijie, Lu, Linfeng, Song, Ye, Ma, Jing, Zhu, Xufei
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Springer US 2015
Materias:
Nano Express
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4586179/
https://www.ncbi.nlm.nih.gov/pubmed/26415539
http://dx.doi.org/10.1186/s11671-015-1077-y
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author Liu, Yuting
Xu, Zhen
Yin, Min
Fan, Haowen
Cheng, Weijie
Lu, Linfeng
Song, Ye
Ma, Jing
Zhu, Xufei
author_facet Liu, Yuting
Xu, Zhen
Yin, Min
Fan, Haowen
Cheng, Weijie
Lu, Linfeng
Song, Ye
Ma, Jing
Zhu, Xufei
author_sort Liu, Yuting
collection PubMed
description The short lifetime of photogenerated charge carriers of hematite (α-Fe(2)O(3)) thin films strongly hindered the PEC performances. Herein, α-Fe(2)O(3) thin films with surface nanowire were synthesized by electrodeposition and post annealing method for photoelectrocatalytic (PEC) water splitting. The thickness of the α-Fe(2)O(3) films can be precisely controlled by adjusting the duration of the electrodeposition. The Au nanoparticles (NPs) and Al(2)O(3) shell by atom layer deposition were further introduced to modify the photoelectrodes. Different constructions were made with different deposition orders of Au and Al(2)O(3) on Fe(2)O(3) films. The Fe(2)O(3)-Au-Al(2)O(3) construction shows the best PEC performance with 1.78 times enhancement by localized surface plasmon resonance (LSPR) of NPs in conjunction with surface passivation of Al(2)O(3) shells. Numerical simulation was carried out to investigate the promotion mechanisms. The high PEC performance for Fe(2)O(3)-Au-Al(2)O(3) construction electrode could be attributed to the Al(2)O(3) intensified LSPR, effective surface passivation by Al(2)O(3) coating, and the efficient charge transfer due to the Fe(2)O(3)-Au Schottky junctions.
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spelling pubmed-45861792015-10-02 Enhanced photoelectrocatalytic performance of α-Fe(2)O(3) thin films by surface plasmon resonance of Au nanoparticles coupled with surface passivation by atom layer deposition of Al(2)O(3) Liu, Yuting Xu, Zhen Yin, Min Fan, Haowen Cheng, Weijie Lu, Linfeng Song, Ye Ma, Jing Zhu, Xufei Nanoscale Res Lett Nano Express The short lifetime of photogenerated charge carriers of hematite (α-Fe(2)O(3)) thin films strongly hindered the PEC performances. Herein, α-Fe(2)O(3) thin films with surface nanowire were synthesized by electrodeposition and post annealing method for photoelectrocatalytic (PEC) water splitting. The thickness of the α-Fe(2)O(3) films can be precisely controlled by adjusting the duration of the electrodeposition. The Au nanoparticles (NPs) and Al(2)O(3) shell by atom layer deposition were further introduced to modify the photoelectrodes. Different constructions were made with different deposition orders of Au and Al(2)O(3) on Fe(2)O(3) films. The Fe(2)O(3)-Au-Al(2)O(3) construction shows the best PEC performance with 1.78 times enhancement by localized surface plasmon resonance (LSPR) of NPs in conjunction with surface passivation of Al(2)O(3) shells. Numerical simulation was carried out to investigate the promotion mechanisms. The high PEC performance for Fe(2)O(3)-Au-Al(2)O(3) construction electrode could be attributed to the Al(2)O(3) intensified LSPR, effective surface passivation by Al(2)O(3) coating, and the efficient charge transfer due to the Fe(2)O(3)-Au Schottky junctions. Springer US 2015-09-29 /pmc/articles/PMC4586179/ /pubmed/26415539 http://dx.doi.org/10.1186/s11671-015-1077-y Text en © Liu et al. 2015 Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.
spellingShingle Nano Express
Liu, Yuting
Xu, Zhen
Yin, Min
Fan, Haowen
Cheng, Weijie
Lu, Linfeng
Song, Ye
Ma, Jing
Zhu, Xufei
Enhanced photoelectrocatalytic performance of α-Fe(2)O(3) thin films by surface plasmon resonance of Au nanoparticles coupled with surface passivation by atom layer deposition of Al(2)O(3)
title Enhanced photoelectrocatalytic performance of α-Fe(2)O(3) thin films by surface plasmon resonance of Au nanoparticles coupled with surface passivation by atom layer deposition of Al(2)O(3)
title_full Enhanced photoelectrocatalytic performance of α-Fe(2)O(3) thin films by surface plasmon resonance of Au nanoparticles coupled with surface passivation by atom layer deposition of Al(2)O(3)
title_fullStr Enhanced photoelectrocatalytic performance of α-Fe(2)O(3) thin films by surface plasmon resonance of Au nanoparticles coupled with surface passivation by atom layer deposition of Al(2)O(3)
title_full_unstemmed Enhanced photoelectrocatalytic performance of α-Fe(2)O(3) thin films by surface plasmon resonance of Au nanoparticles coupled with surface passivation by atom layer deposition of Al(2)O(3)
title_short Enhanced photoelectrocatalytic performance of α-Fe(2)O(3) thin films by surface plasmon resonance of Au nanoparticles coupled with surface passivation by atom layer deposition of Al(2)O(3)
title_sort enhanced photoelectrocatalytic performance of α-fe(2)o(3) thin films by surface plasmon resonance of au nanoparticles coupled with surface passivation by atom layer deposition of al(2)o(3)
topic Nano Express
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4586179/
https://www.ncbi.nlm.nih.gov/pubmed/26415539
http://dx.doi.org/10.1186/s11671-015-1077-y
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