Enhancement of Photocatalytic Activity on TiO2-Nitrogen-Doped Carbon Nanotubes Nanocomposites
TiO2-nitrogen-doped carbon nanotubes (TiO2-CNx) nanocomposites are successfully synthesized via a facile hydrothermal method. The prepared photocatalysts were systematically characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), and ther...
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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/10.1155/2013/824130 |
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| author | Lingling Wang Long Shen Yihuai Li Luping Zhu Jiaowen Shen Lijun Wang |
| author_facet | Lingling Wang Long Shen Yihuai Li Luping Zhu Jiaowen Shen Lijun Wang |
| author_sort | Lingling Wang |
| collection | DOAJ |
| description | TiO2-nitrogen-doped carbon nanotubes (TiO2-CNx) nanocomposites are successfully synthesized via a facile hydrothermal method. The prepared photocatalysts were systematically characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), and thermogravimetric and differential scanning calorimetry analyses (TGA-DSC). The results show that the TiO2 nanoparticles with a narrow size of 7 nm are uniformly deposited on CNx. The photocatalytic activity of the nanocomposite was studied using methyl orange (MO) as a model organic pollutant. The experimental results revealed that the strong linkage between the CNx and TiO2 played a significant role in improving photocatalytic activity. However, the mechanical process for CNx and TiO2 mixtures showed lower activity than neat TiO2. Moreover, TiO2-CNx nanocomposites exhibit much higher photocatalytic activity than that of neat TiO2 and TiO2-CNTs nanocomposites. The improved photodegradation performances are attributed to the suppressed recombination of electrons and holes caused by the effective transfer of photogenerated electrons from TiO2 to CNx. |
| format | Article |
| id | doaj-art-ca12e7901b4f4ceea959826f3ca1f2ba |
| 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-ca12e7901b4f4ceea959826f3ca1f2ba2025-02-03T01:26:34ZengWileyInternational Journal of Photoenergy1110-662X1687-529X2013-01-01201310.1155/2013/824130824130Enhancement of Photocatalytic Activity on TiO2-Nitrogen-Doped Carbon Nanotubes NanocompositesLingling Wang0Long Shen1Yihuai Li2Luping Zhu3Jiaowen Shen4Lijun Wang5School of Urban Development and Environment Engineering, Shanghai Second Polytechnic University, 2360 Jinhai Road, Shanghai 201209, ChinaShanghai Shanshan Technology Co., Ltd., 3158 Jinhai Road, Shanghai 201209, ChinaSchool of Urban Development and Environment Engineering, Shanghai Second Polytechnic University, 2360 Jinhai Road, Shanghai 201209, ChinaSchool of Urban Development and Environment Engineering, Shanghai Second Polytechnic University, 2360 Jinhai Road, Shanghai 201209, ChinaSchool of Urban Development and Environment Engineering, Shanghai Second Polytechnic University, 2360 Jinhai Road, Shanghai 201209, ChinaSchool of Urban Development and Environment Engineering, Shanghai Second Polytechnic University, 2360 Jinhai Road, Shanghai 201209, ChinaTiO2-nitrogen-doped carbon nanotubes (TiO2-CNx) nanocomposites are successfully synthesized via a facile hydrothermal method. The prepared photocatalysts were systematically characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), and thermogravimetric and differential scanning calorimetry analyses (TGA-DSC). The results show that the TiO2 nanoparticles with a narrow size of 7 nm are uniformly deposited on CNx. The photocatalytic activity of the nanocomposite was studied using methyl orange (MO) as a model organic pollutant. The experimental results revealed that the strong linkage between the CNx and TiO2 played a significant role in improving photocatalytic activity. However, the mechanical process for CNx and TiO2 mixtures showed lower activity than neat TiO2. Moreover, TiO2-CNx nanocomposites exhibit much higher photocatalytic activity than that of neat TiO2 and TiO2-CNTs nanocomposites. The improved photodegradation performances are attributed to the suppressed recombination of electrons and holes caused by the effective transfer of photogenerated electrons from TiO2 to CNx.http://dx.doi.org/10.1155/2013/824130 |
| spellingShingle | Lingling Wang Long Shen Yihuai Li Luping Zhu Jiaowen Shen Lijun Wang Enhancement of Photocatalytic Activity on TiO2-Nitrogen-Doped Carbon Nanotubes Nanocomposites International Journal of Photoenergy |
| title | Enhancement of Photocatalytic Activity on TiO2-Nitrogen-Doped Carbon Nanotubes Nanocomposites |
| title_full | Enhancement of Photocatalytic Activity on TiO2-Nitrogen-Doped Carbon Nanotubes Nanocomposites |
| title_fullStr | Enhancement of Photocatalytic Activity on TiO2-Nitrogen-Doped Carbon Nanotubes Nanocomposites |
| title_full_unstemmed | Enhancement of Photocatalytic Activity on TiO2-Nitrogen-Doped Carbon Nanotubes Nanocomposites |
| title_short | Enhancement of Photocatalytic Activity on TiO2-Nitrogen-Doped Carbon Nanotubes Nanocomposites |
| title_sort | enhancement of photocatalytic activity on tio2 nitrogen doped carbon nanotubes nanocomposites |
| url | http://dx.doi.org/10.1155/2013/824130 |
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