Enhancement of Photoelectrochemical Performance of Ag@ZnO Nanowires: Experiment and Mechanism
This paper focuses on the enhancement of photoelectrochemical (PEC) performance of uniform silver nanoparticles-decorated ZnO (Ag@ZnO) nanowires, which have been synthesized by two-step chemical vapor deposition to prepare ZnO nanowires then magnetron sputtering method to deposit Ag nanoparticles. M...
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doaj-532dec2c879f4287a5a7125404a11f1d2020-11-25T02:21:02ZengHindawi LimitedJournal of Nanomaterials1687-41101687-41292020-01-01202010.1155/2020/67427286742728Enhancement of Photoelectrochemical Performance of Ag@ZnO Nanowires: Experiment and MechanismYu Cai0Chengbao Yao1Jie Yuan2Key Laboratory of Photonic and Electric Bandgap Materials, Ministry of Education, School of Physics and Electronic Engineering, Harbin Normal University, Harbin, 150025 Heilongjiang, ChinaKey Laboratory of Photonic and Electric Bandgap Materials, Ministry of Education, School of Physics and Electronic Engineering, Harbin Normal University, Harbin, 150025 Heilongjiang, ChinaHarbin Medical University, Daqing Campus, Daqing, 163319 Heilongjiang, ChinaThis paper focuses on the enhancement of photoelectrochemical (PEC) performance of uniform silver nanoparticles-decorated ZnO (Ag@ZnO) nanowires, which have been synthesized by two-step chemical vapor deposition to prepare ZnO nanowires then magnetron sputtering method to deposit Ag nanoparticles. Moreover, we analyzed the mechanisms of the PEC behavior of the Ag@ZnO nanowires. The PEC characteristics show that the current density of Ag@ZnO nanowires increased comparing to that of unmodified ZnO nanowires. The optimized content of the Ag-decorated ZnO photoelectrode is up to the maximum photocurrent density of 24.8 μAcm-2 at 1 V vs. Ag/AgCl, which was almost four times than that of the unmodified ZnO photoelectrode. Based on the surface plasmon resonance (SPR), effect of Ag nanoparticles was enhanced PEC performance of the Ag@ZnO nanowires. Because SPR effect of Ag nanoparticles extended the light absorption and enhanced the separation efficiency of the photogenerated electron-hole pairs. The remarkable PEC properties offer metals-semiconductor compound nanostructures materials as a promising electron source for high current density applications.http://dx.doi.org/10.1155/2020/6742728 |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Yu Cai Chengbao Yao Jie Yuan |
spellingShingle |
Yu Cai Chengbao Yao Jie Yuan Enhancement of Photoelectrochemical Performance of Ag@ZnO Nanowires: Experiment and Mechanism Journal of Nanomaterials |
author_facet |
Yu Cai Chengbao Yao Jie Yuan |
author_sort |
Yu Cai |
title |
Enhancement of Photoelectrochemical Performance of Ag@ZnO Nanowires: Experiment and Mechanism |
title_short |
Enhancement of Photoelectrochemical Performance of Ag@ZnO Nanowires: Experiment and Mechanism |
title_full |
Enhancement of Photoelectrochemical Performance of Ag@ZnO Nanowires: Experiment and Mechanism |
title_fullStr |
Enhancement of Photoelectrochemical Performance of Ag@ZnO Nanowires: Experiment and Mechanism |
title_full_unstemmed |
Enhancement of Photoelectrochemical Performance of Ag@ZnO Nanowires: Experiment and Mechanism |
title_sort |
enhancement of photoelectrochemical performance of ag@zno nanowires: experiment and mechanism |
publisher |
Hindawi Limited |
series |
Journal of Nanomaterials |
issn |
1687-4110 1687-4129 |
publishDate |
2020-01-01 |
description |
This paper focuses on the enhancement of photoelectrochemical (PEC) performance of uniform silver nanoparticles-decorated ZnO (Ag@ZnO) nanowires, which have been synthesized by two-step chemical vapor deposition to prepare ZnO nanowires then magnetron sputtering method to deposit Ag nanoparticles. Moreover, we analyzed the mechanisms of the PEC behavior of the Ag@ZnO nanowires. The PEC characteristics show that the current density of Ag@ZnO nanowires increased comparing to that of unmodified ZnO nanowires. The optimized content of the Ag-decorated ZnO photoelectrode is up to the maximum photocurrent density of 24.8 μAcm-2 at 1 V vs. Ag/AgCl, which was almost four times than that of the unmodified ZnO photoelectrode. Based on the surface plasmon resonance (SPR), effect of Ag nanoparticles was enhanced PEC performance of the Ag@ZnO nanowires. Because SPR effect of Ag nanoparticles extended the light absorption and enhanced the separation efficiency of the photogenerated electron-hole pairs. The remarkable PEC properties offer metals-semiconductor compound nanostructures materials as a promising electron source for high current density applications. |
url |
http://dx.doi.org/10.1155/2020/6742728 |
work_keys_str_mv |
AT yucai enhancementofphotoelectrochemicalperformanceofagznonanowiresexperimentandmechanism AT chengbaoyao enhancementofphotoelectrochemicalperformanceofagznonanowiresexperimentandmechanism AT jieyuan enhancementofphotoelectrochemicalperformanceofagznonanowiresexperimentandmechanism |
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1715505983177883648 |