Diffusion-Controlled Growth of Oxygen Bubble Evolved from Nanorod-Array TiO2 Photoelectrode
Nanorod-array structure gains its popularity in photoelectrode design for water splitting. However, the structure’s effects on solid-liquid interface interaction and reaction product transportation still remain unsolved. Gas bubble generally evolved from photoelectrodes, which provides a starting po...
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| Format: | Article |
| Language: | English |
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Wiley
2014-01-01
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| Series: | Advances in Condensed Matter Physics |
| Online Access: | http://dx.doi.org/10.1155/2014/970891 |
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| author | Xiaowei Hu Yechun Wang Liejin Guo Zhenshan Cao |
| author_facet | Xiaowei Hu Yechun Wang Liejin Guo Zhenshan Cao |
| author_sort | Xiaowei Hu |
| collection | DOAJ |
| description | Nanorod-array structure gains its popularity in photoelectrode design for water splitting. However, the structure’s effects on solid-liquid interface interaction and reaction product transportation still remain unsolved. Gas bubble generally evolved from photoelectrodes, which provides a starting point for the problem-solving. Based on this, investigations on the gas-evolving photoelectrode are carried out in this paper. By experimental studies of wettability on the photoelectrode nanorod-array surface and oxygen bubble growth from anode, we analyzed the interaction affecting the gas-solid-liquid contact behaviors and product transportation mechanism, which is controlled by diffusion due to the concentration gradient of dissolved gases in the aqueous electrolyte and the microconvection caused by the bubble interface movement. In the end, based on the bubble growth characteristics of RB(t)~t0.5 in the experiment, a model describing the product transport mechanism was presented. |
| format | Article |
| id | doaj-art-9d0b5aed507a4b47921a7b446cd6c2e7 |
| institution | Kabale University |
| issn | 1687-8108 1687-8124 |
| language | English |
| publishDate | 2014-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Condensed Matter Physics |
| spelling | doaj-art-9d0b5aed507a4b47921a7b446cd6c2e72025-02-03T01:26:03ZengWileyAdvances in Condensed Matter Physics1687-81081687-81242014-01-01201410.1155/2014/970891970891Diffusion-Controlled Growth of Oxygen Bubble Evolved from Nanorod-Array TiO2 PhotoelectrodeXiaowei Hu0Yechun Wang1Liejin Guo2Zhenshan Cao3State Key Laboratory of Multiphase Flow in Power Engineering, International Research Center for Renewable Energy, Xi’an Jiaotong University, Shaanxi 710049, ChinaState Key Laboratory of Multiphase Flow in Power Engineering, International Research Center for Renewable Energy, Xi’an Jiaotong University, Shaanxi 710049, ChinaState Key Laboratory of Multiphase Flow in Power Engineering, International Research Center for Renewable Energy, Xi’an Jiaotong University, Shaanxi 710049, ChinaState Key Laboratory of Multiphase Flow in Power Engineering, International Research Center for Renewable Energy, Xi’an Jiaotong University, Shaanxi 710049, ChinaNanorod-array structure gains its popularity in photoelectrode design for water splitting. However, the structure’s effects on solid-liquid interface interaction and reaction product transportation still remain unsolved. Gas bubble generally evolved from photoelectrodes, which provides a starting point for the problem-solving. Based on this, investigations on the gas-evolving photoelectrode are carried out in this paper. By experimental studies of wettability on the photoelectrode nanorod-array surface and oxygen bubble growth from anode, we analyzed the interaction affecting the gas-solid-liquid contact behaviors and product transportation mechanism, which is controlled by diffusion due to the concentration gradient of dissolved gases in the aqueous electrolyte and the microconvection caused by the bubble interface movement. In the end, based on the bubble growth characteristics of RB(t)~t0.5 in the experiment, a model describing the product transport mechanism was presented.http://dx.doi.org/10.1155/2014/970891 |
| spellingShingle | Xiaowei Hu Yechun Wang Liejin Guo Zhenshan Cao Diffusion-Controlled Growth of Oxygen Bubble Evolved from Nanorod-Array TiO2 Photoelectrode Advances in Condensed Matter Physics |
| title | Diffusion-Controlled Growth of Oxygen Bubble Evolved from Nanorod-Array TiO2 Photoelectrode |
| title_full | Diffusion-Controlled Growth of Oxygen Bubble Evolved from Nanorod-Array TiO2 Photoelectrode |
| title_fullStr | Diffusion-Controlled Growth of Oxygen Bubble Evolved from Nanorod-Array TiO2 Photoelectrode |
| title_full_unstemmed | Diffusion-Controlled Growth of Oxygen Bubble Evolved from Nanorod-Array TiO2 Photoelectrode |
| title_short | Diffusion-Controlled Growth of Oxygen Bubble Evolved from Nanorod-Array TiO2 Photoelectrode |
| title_sort | diffusion controlled growth of oxygen bubble evolved from nanorod array tio2 photoelectrode |
| url | http://dx.doi.org/10.1155/2014/970891 |
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