Photoelectrocatalytic Hydrogen Generation Enabled by CdS Passivated ZnCuInSe Quantum Dot-Sensitized TiO(2) Decorated with Ag Nanoparticles

Here we present the photoelectrocatalytic hydrogen generation properties of CdS passivated ZnCuInSe (ZCISe) quantum dots (QDs) supported by TiO(2) nanowires decorated with Ag nanoparticles. In this configuration, Ag nanoparticles were sandwiched between the photo-electrons collector (TiO(2)) and pho...

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Autores principales: Li, Weili, Geng, Hongchao, Yao, Lu, Cao, Kesheng, Sheng, Pengtao, Cai, Qingyun
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2019
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6474140/
https://www.ncbi.nlm.nih.gov/pubmed/30857151
http://dx.doi.org/10.3390/nano9030393
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author Li, Weili
Geng, Hongchao
Yao, Lu
Cao, Kesheng
Sheng, Pengtao
Cai, Qingyun
author_facet Li, Weili
Geng, Hongchao
Yao, Lu
Cao, Kesheng
Sheng, Pengtao
Cai, Qingyun
author_sort Li, Weili
collection PubMed
description Here we present the photoelectrocatalytic hydrogen generation properties of CdS passivated ZnCuInSe (ZCISe) quantum dots (QDs) supported by TiO(2) nanowires decorated with Ag nanoparticles. In this configuration, Ag nanoparticles were sandwiched between the photo-electrons collector (TiO(2)) and photo-sensitizers (ZCISe), and acted as an electron relay speeding up the charge carrier transport. ZCISe and CdS enabled the optical absorption of the photoelectrode ranging from ultraviolet to near infrared region, which significantly enhanced the solar-to-chemical energy conversion efficiency. A photocurrent of 10.5 mA/cm(2) and a hydrogen production rate of about 52.9 μmol/h were achieved under simulated sunlight (1.5 AG).
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spelling pubmed-64741402019-05-01 Photoelectrocatalytic Hydrogen Generation Enabled by CdS Passivated ZnCuInSe Quantum Dot-Sensitized TiO(2) Decorated with Ag Nanoparticles Li, Weili Geng, Hongchao Yao, Lu Cao, Kesheng Sheng, Pengtao Cai, Qingyun Nanomaterials (Basel) Article Here we present the photoelectrocatalytic hydrogen generation properties of CdS passivated ZnCuInSe (ZCISe) quantum dots (QDs) supported by TiO(2) nanowires decorated with Ag nanoparticles. In this configuration, Ag nanoparticles were sandwiched between the photo-electrons collector (TiO(2)) and photo-sensitizers (ZCISe), and acted as an electron relay speeding up the charge carrier transport. ZCISe and CdS enabled the optical absorption of the photoelectrode ranging from ultraviolet to near infrared region, which significantly enhanced the solar-to-chemical energy conversion efficiency. A photocurrent of 10.5 mA/cm(2) and a hydrogen production rate of about 52.9 μmol/h were achieved under simulated sunlight (1.5 AG). MDPI 2019-03-08 /pmc/articles/PMC6474140/ /pubmed/30857151 http://dx.doi.org/10.3390/nano9030393 Text en © 2019 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Li, Weili
Geng, Hongchao
Yao, Lu
Cao, Kesheng
Sheng, Pengtao
Cai, Qingyun
Photoelectrocatalytic Hydrogen Generation Enabled by CdS Passivated ZnCuInSe Quantum Dot-Sensitized TiO(2) Decorated with Ag Nanoparticles
title Photoelectrocatalytic Hydrogen Generation Enabled by CdS Passivated ZnCuInSe Quantum Dot-Sensitized TiO(2) Decorated with Ag Nanoparticles
title_full Photoelectrocatalytic Hydrogen Generation Enabled by CdS Passivated ZnCuInSe Quantum Dot-Sensitized TiO(2) Decorated with Ag Nanoparticles
title_fullStr Photoelectrocatalytic Hydrogen Generation Enabled by CdS Passivated ZnCuInSe Quantum Dot-Sensitized TiO(2) Decorated with Ag Nanoparticles
title_full_unstemmed Photoelectrocatalytic Hydrogen Generation Enabled by CdS Passivated ZnCuInSe Quantum Dot-Sensitized TiO(2) Decorated with Ag Nanoparticles
title_short Photoelectrocatalytic Hydrogen Generation Enabled by CdS Passivated ZnCuInSe Quantum Dot-Sensitized TiO(2) Decorated with Ag Nanoparticles
title_sort photoelectrocatalytic hydrogen generation enabled by cds passivated zncuinse quantum dot-sensitized tio(2) decorated with ag nanoparticles
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6474140/
https://www.ncbi.nlm.nih.gov/pubmed/30857151
http://dx.doi.org/10.3390/nano9030393
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