In Situ Measurement of Local Hydrogen Production Rate by Bubble-Evolved Recording
Hydrogen visibly bubbles during photocatalytic water splitting under illumination with above-bandgap radiation, which provides a direct measurement of local gas-evolving reaction rate. In this paper, optical microscopy of superfield depth was used for recording the hydrogen bubble growth on Cd0.5Zn0...
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| Format: | Article |
| Language: | English |
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Wiley
2013-01-01
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| Series: | International Journal of Photoenergy |
| Online Access: | http://dx.doi.org/10.1155/2013/568206 |
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| author | Xiaowei Hu Liejin Guo Yechun Wang |
| author_facet | Xiaowei Hu Liejin Guo Yechun Wang |
| author_sort | Xiaowei Hu |
| collection | DOAJ |
| description | Hydrogen visibly bubbles during photocatalytic water splitting under illumination with above-bandgap radiation, which provides a direct measurement of local gas-evolving reaction rate. In this paper, optical microscopy of superfield depth was used for recording the hydrogen bubble growth on Cd0.5Zn0.5S photocatalyst in reaction liquid and illuminated with purple light. By analyzing change of hydrogen bubble size as a function of time, we understood that hydrogen bubble growth experienced two periods, which were inertia effect dominated period and diffusion effect dominated period, respectively. The tendency of hydrogen bubble growth was similar to that of the gas bubble in boiling, while the difference in bubble diameter and growth time magnitude was great. Meanwhile, we obtained the local hydrogen production rate on photocatalyst active site by measuring hydrogen bubble growth variation characteristics. This method makes it possible to confirm local actual hydrogen evolution rate quantitatively during photocatalytic water splitting. |
| format | Article |
| id | doaj-art-b17a28a846e34adf80fab3da2aa84c9c |
| institution | Kabale University |
| issn | 1110-662X 1687-529X |
| language | English |
| publishDate | 2013-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Photoenergy |
| spelling | doaj-art-b17a28a846e34adf80fab3da2aa84c9c2025-02-03T01:02:24ZengWileyInternational Journal of Photoenergy1110-662X1687-529X2013-01-01201310.1155/2013/568206568206In Situ Measurement of Local Hydrogen Production Rate by Bubble-Evolved RecordingXiaowei Hu0Liejin Guo1Yechun Wang2State 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, ChinaHydrogen visibly bubbles during photocatalytic water splitting under illumination with above-bandgap radiation, which provides a direct measurement of local gas-evolving reaction rate. In this paper, optical microscopy of superfield depth was used for recording the hydrogen bubble growth on Cd0.5Zn0.5S photocatalyst in reaction liquid and illuminated with purple light. By analyzing change of hydrogen bubble size as a function of time, we understood that hydrogen bubble growth experienced two periods, which were inertia effect dominated period and diffusion effect dominated period, respectively. The tendency of hydrogen bubble growth was similar to that of the gas bubble in boiling, while the difference in bubble diameter and growth time magnitude was great. Meanwhile, we obtained the local hydrogen production rate on photocatalyst active site by measuring hydrogen bubble growth variation characteristics. This method makes it possible to confirm local actual hydrogen evolution rate quantitatively during photocatalytic water splitting.http://dx.doi.org/10.1155/2013/568206 |
| spellingShingle | Xiaowei Hu Liejin Guo Yechun Wang In Situ Measurement of Local Hydrogen Production Rate by Bubble-Evolved Recording International Journal of Photoenergy |
| title | In Situ Measurement of Local Hydrogen Production Rate by Bubble-Evolved Recording |
| title_full | In Situ Measurement of Local Hydrogen Production Rate by Bubble-Evolved Recording |
| title_fullStr | In Situ Measurement of Local Hydrogen Production Rate by Bubble-Evolved Recording |
| title_full_unstemmed | In Situ Measurement of Local Hydrogen Production Rate by Bubble-Evolved Recording |
| title_short | In Situ Measurement of Local Hydrogen Production Rate by Bubble-Evolved Recording |
| title_sort | in situ measurement of local hydrogen production rate by bubble evolved recording |
| url | http://dx.doi.org/10.1155/2013/568206 |
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