https://scholars.lib.ntu.edu.tw/handle/123456789/389730
Title: | Correlation between palladium chemical state and photocatalytic performance of TiO2-Pd based nanoparticles | Authors: | Wu, M.-C. Chang, I.-C. Huang, W.-K. Tu, Y.-C. Hsu, C.-P. Su, W.-F. WEI-FANG SU |
Keywords: | Photocatalytic hydrogen production; Photodegradation; TiO2 Photocatalyst; X-ray photoelectron spectroscopy | Issue Date: | 2014 | Journal Volume: | 570 | Journal Issue: | PB | Start page/Pages: | 371-375 | Source: | Thin Solid Films | Abstract: | Photocatalytic processes can be used to illustrate both solar energy conversion and environmental friendly applications. In this study, we synthesize several titanium dioxide-palladium (TiO2-Pd) based catalysts by wet impregnation method plus hydrogen-thermal reduction process in order to develop high-effective photocatalysts that can be easily produced even in industrial quantities. Moreover, we examine the effects of hydrogen-thermal reduction process on the photocatalytic performance of TiO2-Pd based catalysts. From X-ray photoelectron spectroscopy analysis, increasing the hydrogen reduction process time results in the decreasing of palladium ion (Pd2 +) and palladium oxide (PdO), but it causes the increasing of palladium (Pd) metal. The hydrogen reduction process is helpful for the preparation of TiO2-Pd based catalysts with high photocatalytic decomposition of organic dyes (the apparent reaction rate constant ∼ 0.124 min- 1 under solar simulator irradiation) and excellent photocatalytic hydrogen production rate (∼ 26,000 μmol/g·h under UV-B irradiation). The TiO2-Pd based catalysts prepared in this study exhibit high photocatalytic performance. They are also industrially relevant especially when the low cost of Pd metal is taken into consideration. © 2014 Elsevier B.V. |
URI: | http://www.scopus.com/inward/record.url?eid=2-s2.0-84912043465&partnerID=MN8TOARS http://scholars.lib.ntu.edu.tw/handle/123456789/389730 |
DOI: | 10.1016/j.tsf.2014.04.026 | SDG/Keyword: | Costs; Hydrogen production; Irradiation; Oxide minerals; Photocatalysts; Photodegradation; Photoelectrons; Photons; Rate constants; Solar energy; Solar power generation; TiO2 nanoparticles; Titanium dioxide; X ray photoelectron spectroscopy; Environmental-friendly; Hydrogen reduction process; Photocatalytic decomposition; Photocatalytic hydrogen production; Photocatalytic performance; Solar simulator irradiation; TiO2 photocatalyst; Wet impregnation method; Palladium compounds |
Appears in Collections: | 材料科學與工程學系 |
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