Ultraviolet light–assisted electrokinetic conversion based on TiO₂ electrodes

Fluidic nanogenerators have attracted increasing interests in applications of distributed electronics and self-powered systems. Here, we report a novel electrokinetic conversion device composed of an anodic aluminum oxide membrane, deionized water, and titanium oxide electrodes. Under ultraviolet li...

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Main Authors: Pei, Junxian, Song, Xianyin, Chu, Wenbin, Liu, Xiaowei, Deng, Wangquan, Cheng, Ting, Hu, Xuejiao, Yang, Peihua, Liu, Kang
Other Authors: School of Physical and Mathematical Sciences
Format: Article
Language:English
Published: 2021
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Online Access:https://hdl.handle.net/10356/154650
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-1546502021-12-30T06:23:47Z Ultraviolet light–assisted electrokinetic conversion based on TiO₂ electrodes Pei, Junxian Song, Xianyin Chu, Wenbin Liu, Xiaowei Deng, Wangquan Cheng, Ting Hu, Xuejiao Yang, Peihua Liu, Kang School of Physical and Mathematical Sciences Science::Physics Streaming Potential Nanofluidics Fluidic nanogenerators have attracted increasing interests in applications of distributed electronics and self-powered systems. Here, we report a novel electrokinetic conversion device composed of an anodic aluminum oxide membrane, deionized water, and titanium oxide electrodes. Under ultraviolet light illumination, the electrokinetic device outputs stable and continuous short-circuit current without any electrode consumption or external circulation of ions. Based on the output behavior of the device at different pressures and light intensities, an interaction mechanism between the electrokinetic effects in nanochannels and ultraviolet light–induced radical recycle at the electrodes is proposed. The radical recycle process transfers charges between ions and electrons to achieve stable streaming current in electrokinetic systems, while streaming current induced positive and negative ions acumination facilities the radical recycle process. These results bring new insights into the charge transfer process in fluidic energy conversion devices and provide a new way to construct light-assisted microfluidic energy conversion systems. This work was financially supported by the National Natural Science Foundation of China (51976141) and Open Project Program of Wuhan National Laboratory for Optoelectronics (2018WNLOKF018). 2021-12-30T06:23:47Z 2021-12-30T06:23:47Z 2020 Journal Article Pei, J., Song, X., Chu, W., Liu, X., Deng, W., Cheng, T., Hu, X., Yang, P. & Liu, K. (2020). Ultraviolet light–assisted electrokinetic conversion based on TiO₂ electrodes. Materials Today Energy, 18, 100517-. https://dx.doi.org/10.1016/j.mtener.2020.100517 2468-6069 https://hdl.handle.net/10356/154650 10.1016/j.mtener.2020.100517 2-s2.0-85091909888 18 100517 en Materials Today Energy © 2020 Elsevier Ltd. All rights reserved.
institution Nanyang Technological University
building NTU Library
continent Asia
country Singapore
Singapore
content_provider NTU Library
collection DR-NTU
language English
topic Science::Physics
Streaming Potential
Nanofluidics
spellingShingle Science::Physics
Streaming Potential
Nanofluidics
Pei, Junxian
Song, Xianyin
Chu, Wenbin
Liu, Xiaowei
Deng, Wangquan
Cheng, Ting
Hu, Xuejiao
Yang, Peihua
Liu, Kang
Ultraviolet light–assisted electrokinetic conversion based on TiO₂ electrodes
description Fluidic nanogenerators have attracted increasing interests in applications of distributed electronics and self-powered systems. Here, we report a novel electrokinetic conversion device composed of an anodic aluminum oxide membrane, deionized water, and titanium oxide electrodes. Under ultraviolet light illumination, the electrokinetic device outputs stable and continuous short-circuit current without any electrode consumption or external circulation of ions. Based on the output behavior of the device at different pressures and light intensities, an interaction mechanism between the electrokinetic effects in nanochannels and ultraviolet light–induced radical recycle at the electrodes is proposed. The radical recycle process transfers charges between ions and electrons to achieve stable streaming current in electrokinetic systems, while streaming current induced positive and negative ions acumination facilities the radical recycle process. These results bring new insights into the charge transfer process in fluidic energy conversion devices and provide a new way to construct light-assisted microfluidic energy conversion systems.
author2 School of Physical and Mathematical Sciences
author_facet School of Physical and Mathematical Sciences
Pei, Junxian
Song, Xianyin
Chu, Wenbin
Liu, Xiaowei
Deng, Wangquan
Cheng, Ting
Hu, Xuejiao
Yang, Peihua
Liu, Kang
format Article
author Pei, Junxian
Song, Xianyin
Chu, Wenbin
Liu, Xiaowei
Deng, Wangquan
Cheng, Ting
Hu, Xuejiao
Yang, Peihua
Liu, Kang
author_sort Pei, Junxian
title Ultraviolet light–assisted electrokinetic conversion based on TiO₂ electrodes
title_short Ultraviolet light–assisted electrokinetic conversion based on TiO₂ electrodes
title_full Ultraviolet light–assisted electrokinetic conversion based on TiO₂ electrodes
title_fullStr Ultraviolet light–assisted electrokinetic conversion based on TiO₂ electrodes
title_full_unstemmed Ultraviolet light–assisted electrokinetic conversion based on TiO₂ electrodes
title_sort ultraviolet light–assisted electrokinetic conversion based on tio₂ electrodes
publishDate 2021
url https://hdl.handle.net/10356/154650
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