High-Efficiently Photoelectrochemical Hydrogen Production over Zn-Incorporated TiO2 Nanotubes
To investigate the Zn dopant and nanotube morphology effects of TiO2 in electrochemical hydrogen production from the photo-splitting of methanol/water solution, we have designed a Zn-incorporated TiO2 nanotube (Zn-TNT) photocatalyst. The TNT and Zn-TNT materials had a width of 70~100 nm. The hydroge...
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| Format: | Article |
| Language: | English |
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Wiley
2012-01-01
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| Series: | International Journal of Photoenergy |
| Online Access: | http://dx.doi.org/10.1155/2012/843042 |
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| author | Gayoung Lee Min-Kyeong Yeo Myeong-Heon Um Misook Kang |
| author_facet | Gayoung Lee Min-Kyeong Yeo Myeong-Heon Um Misook Kang |
| author_sort | Gayoung Lee |
| collection | DOAJ |
| description | To investigate the Zn dopant and nanotube morphology effects of TiO2 in electrochemical hydrogen production from the photo-splitting of methanol/water solution, we have designed a Zn-incorporated TiO2 nanotube (Zn-TNT) photocatalyst. The TNT and Zn-TNT materials had a width of 70~100 nm. The hydrogen production over the Zn-TNT photocatalysts was higher than that over the TNT; specifically, 10.2 mL of H2 gas was produced after 9 hours when 0.5 g of 0.01 mol% Zn-TNT was used. The zeta-potential values in aqueous solution determined by electrophoretic light scattering (ELS) had negative surface charges, which was related to the surface stability, and the absolute value was the largest in 0.01 mol% Zn-TNT. On the basis of UV-visible and photoluminescence (PL) spectra results, the high photoactivity of Zn-TNT was attributed to the shift toward the visible region and increase of PL intensity due to the increased number of excited electrons and holes. |
| format | Article |
| id | doaj-art-3fa4aa3a3f774e47b9ca8a23d494cba8 |
| institution | Kabale University |
| issn | 1110-662X 1687-529X |
| language | English |
| publishDate | 2012-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Photoenergy |
| spelling | doaj-art-3fa4aa3a3f774e47b9ca8a23d494cba82025-08-20T03:55:36ZengWileyInternational Journal of Photoenergy1110-662X1687-529X2012-01-01201210.1155/2012/843042843042High-Efficiently Photoelectrochemical Hydrogen Production over Zn-Incorporated TiO2 NanotubesGayoung Lee0Min-Kyeong Yeo1Myeong-Heon Um2Misook Kang3Department of Chemistry, College of Science, Yeungnam University, Gyeongsan, Gyeongbuk 712-749, Republic of KoreaDepartment of Environmental Science and Environmental Research, College of Engineering, Kyung Hee University, Yongin, Gyeonggi 446-701, Republic of KoreaDepartment of Chemical Engineering, College of Engineering, Kongju National University, Cheonan, Chungnam 330-717, Republic of KoreaDepartment of Chemistry, College of Science, Yeungnam University, Gyeongsan, Gyeongbuk 712-749, Republic of KoreaTo investigate the Zn dopant and nanotube morphology effects of TiO2 in electrochemical hydrogen production from the photo-splitting of methanol/water solution, we have designed a Zn-incorporated TiO2 nanotube (Zn-TNT) photocatalyst. The TNT and Zn-TNT materials had a width of 70~100 nm. The hydrogen production over the Zn-TNT photocatalysts was higher than that over the TNT; specifically, 10.2 mL of H2 gas was produced after 9 hours when 0.5 g of 0.01 mol% Zn-TNT was used. The zeta-potential values in aqueous solution determined by electrophoretic light scattering (ELS) had negative surface charges, which was related to the surface stability, and the absolute value was the largest in 0.01 mol% Zn-TNT. On the basis of UV-visible and photoluminescence (PL) spectra results, the high photoactivity of Zn-TNT was attributed to the shift toward the visible region and increase of PL intensity due to the increased number of excited electrons and holes.http://dx.doi.org/10.1155/2012/843042 |
| spellingShingle | Gayoung Lee Min-Kyeong Yeo Myeong-Heon Um Misook Kang High-Efficiently Photoelectrochemical Hydrogen Production over Zn-Incorporated TiO2 Nanotubes International Journal of Photoenergy |
| title | High-Efficiently Photoelectrochemical Hydrogen Production over Zn-Incorporated TiO2 Nanotubes |
| title_full | High-Efficiently Photoelectrochemical Hydrogen Production over Zn-Incorporated TiO2 Nanotubes |
| title_fullStr | High-Efficiently Photoelectrochemical Hydrogen Production over Zn-Incorporated TiO2 Nanotubes |
| title_full_unstemmed | High-Efficiently Photoelectrochemical Hydrogen Production over Zn-Incorporated TiO2 Nanotubes |
| title_short | High-Efficiently Photoelectrochemical Hydrogen Production over Zn-Incorporated TiO2 Nanotubes |
| title_sort | high efficiently photoelectrochemical hydrogen production over zn incorporated tio2 nanotubes |
| url | http://dx.doi.org/10.1155/2012/843042 |
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