Selective photocatalytic decomposition of formic acid over AuPd nanoparticle-decorated TiO2 nanofibers toward high-yield hydrogen production
We present high-yield hydrogen production through selective photocatalytic decomposition of formic acid by using electrospun TiO2 nanofibers decorated with AuPd bimetallic alloy nanoparticles under simulated sunlight irradiation. By using only 5 mg of the AuPd/TiO2 nanofibers containing the 0.75% Au...
| Main Authors: | , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
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2014
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| Online Access: | https://hdl.handle.net/10356/101724 http://hdl.handle.net/10220/24207 |
| _version_ | 1826127056677634048 |
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| author | Zhang, Zhenyi Cao, Shao-Wen Liao, Yusen Xue, Can |
| author2 | School of Materials Science & Engineering |
| author_facet | School of Materials Science & Engineering Zhang, Zhenyi Cao, Shao-Wen Liao, Yusen Xue, Can |
| author_sort | Zhang, Zhenyi |
| collection | NTU |
| description | We present high-yield hydrogen production through selective photocatalytic decomposition of formic acid by using electrospun TiO2 nanofibers decorated with AuPd bimetallic alloy nanoparticles under simulated sunlight irradiation. By using only 5 mg of the AuPd/TiO2 nanofibers containing the 0.75% Au and 0.25% Pd, we could achieve an optimal H2 generation rate of 88.5 μmol h−1 with an apparent quantum yield at 365 nm as 15.6%, which is higher than that of the Pd/TiO2 and Au/TiO2 nanofibers by a factor of 1.6 and 4.5, respectively. The enhanced photocatalytic decomposition of formic acid for H2 generation could be attributed to the stronger electron-sink effect of AuPd alloy nanoparticles, the high selectivity of Pd for the dehydrogenation of formic acid, and the surface plasmon resonance effect of Au. More importantly, we demonstrate that the photocatalytic processes enable re-activation of the AuPd nanoparticles that were poisoned by CO during thermal decomposition of formic acid. As such, the presented AuPd/TiO2 nanofibers are promising materials for re-generation of H2 under mild conditions from liquid storage carrier of hydrogen. |
| first_indexed | 2024-10-01T07:02:31Z |
| format | Journal Article |
| id | ntu-10356/101724 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T07:02:31Z |
| publishDate | 2014 |
| record_format | dspace |
| spelling | ntu-10356/1017242023-07-14T15:46:15Z Selective photocatalytic decomposition of formic acid over AuPd nanoparticle-decorated TiO2 nanofibers toward high-yield hydrogen production Zhang, Zhenyi Cao, Shao-Wen Liao, Yusen Xue, Can School of Materials Science & Engineering DRNTU::Engineering::Materials::Photonics and optoelectronics materials We present high-yield hydrogen production through selective photocatalytic decomposition of formic acid by using electrospun TiO2 nanofibers decorated with AuPd bimetallic alloy nanoparticles under simulated sunlight irradiation. By using only 5 mg of the AuPd/TiO2 nanofibers containing the 0.75% Au and 0.25% Pd, we could achieve an optimal H2 generation rate of 88.5 μmol h−1 with an apparent quantum yield at 365 nm as 15.6%, which is higher than that of the Pd/TiO2 and Au/TiO2 nanofibers by a factor of 1.6 and 4.5, respectively. The enhanced photocatalytic decomposition of formic acid for H2 generation could be attributed to the stronger electron-sink effect of AuPd alloy nanoparticles, the high selectivity of Pd for the dehydrogenation of formic acid, and the surface plasmon resonance effect of Au. More importantly, we demonstrate that the photocatalytic processes enable re-activation of the AuPd nanoparticles that were poisoned by CO during thermal decomposition of formic acid. As such, the presented AuPd/TiO2 nanofibers are promising materials for re-generation of H2 under mild conditions from liquid storage carrier of hydrogen. Accepted version 2014-11-10T07:18:56Z 2019-12-06T20:43:23Z 2014-11-10T07:18:56Z 2019-12-06T20:43:23Z 2014 2014 Journal Article Zhang, Z., Cao, S.-W., Liao, Y., & Xue, C. (2015). Selective photocatalytic decomposition of formic acid over AuPd nanoparticle-decorated TiO2 nanofibers toward high-yield hydrogen production. Applied catalysis B : environmental, 162, 204-209. 0926-3373 https://hdl.handle.net/10356/101724 http://hdl.handle.net/10220/24207 10.1016/j.apcatb.2014.06.055 en Applied catalysis B : environmental © 2014 Elsevier B.V. This is the author created version of a work that has been peer reviewed and accepted for publication by Applied Catalysis B: Environmental, Elsevier B.V. It incorporates referee’s comments but changes resulting from the publishing process, such as copyediting, structural formatting, may not be reflected in this document. The published version is available at: [Article DOI: http://dx.doi.org/10.1016/j.apcatb.2014.06.055]. 17 p. application/pdf |
| spellingShingle | DRNTU::Engineering::Materials::Photonics and optoelectronics materials Zhang, Zhenyi Cao, Shao-Wen Liao, Yusen Xue, Can Selective photocatalytic decomposition of formic acid over AuPd nanoparticle-decorated TiO2 nanofibers toward high-yield hydrogen production |
| title | Selective photocatalytic decomposition of formic acid over AuPd nanoparticle-decorated TiO2 nanofibers toward high-yield hydrogen production |
| title_full | Selective photocatalytic decomposition of formic acid over AuPd nanoparticle-decorated TiO2 nanofibers toward high-yield hydrogen production |
| title_fullStr | Selective photocatalytic decomposition of formic acid over AuPd nanoparticle-decorated TiO2 nanofibers toward high-yield hydrogen production |
| title_full_unstemmed | Selective photocatalytic decomposition of formic acid over AuPd nanoparticle-decorated TiO2 nanofibers toward high-yield hydrogen production |
| title_short | Selective photocatalytic decomposition of formic acid over AuPd nanoparticle-decorated TiO2 nanofibers toward high-yield hydrogen production |
| title_sort | selective photocatalytic decomposition of formic acid over aupd nanoparticle decorated tio2 nanofibers toward high yield hydrogen production |
| topic | DRNTU::Engineering::Materials::Photonics and optoelectronics materials |
| url | https://hdl.handle.net/10356/101724 http://hdl.handle.net/10220/24207 |
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