Hydrogen production by photocatalytic water-splitting on Pt-doped TiO2–ZnO under visible light
| Autor: | Ren-Jang Wu, Meng-Yu Xie, Wei-Chen Chang, Murthy Chavali, Xin-Yuan Peng, Kang-Yang Su |
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| Rok vydání: | 2017 |
| Předmět: |
Materials science
Hydrogen Scanning electron microscope General Chemical Engineering Analytical chemistry chemistry.chemical_element 02 engineering and technology General Chemistry 010402 general chemistry 021001 nanoscience & nanotechnology Photochemistry 01 natural sciences 0104 chemical sciences chemistry Transmission electron microscopy Photocatalysis Water splitting 0210 nano-technology Photocatalytic water splitting Hydrogen production Visible spectrum |
| Zdroj: | Journal of the Taiwan Institute of Chemical Engineers. 70:161-167 |
| ISSN: | 1876-1070 |
| Popis: | Pt/TiO 2 –ZnO photocatalytic materials were prepared for the generation of hydrogen gas from water splitting. The photocatalysts were characterized by X-ray diffraction (XRD), UV-visible spectra (UV–Vis), scanning electron microscope (SEM) and transmission electron microscope (TEM). The absorption wavelength of TiO 2 was shifted to longer wavelength on Pt/TiO 2 –ZnO. A 400 W mercury arc lamp with a cutoff filter which filter out all the wavelengths under 400 nm as the visible light source. It reached up to the optimum value of 203 µmolh −1 g −1 on TiO 2 –ZnO (Ti/Zn = 10). A catalyst of 0.5 wt% Pt/TiO 2 –ZnO (Ti/Zn = 10) was used and a best hydrogen production rate through water splitting was reaching to 2150 µmolh −1 g −1 . The 0.1 wt% Pt/TiO 2 –ZnO showed a satisfying long-term stability, and 88% and 77% of initial hydrogen productivity still remained after 7 days and 14 days, respectively. |
| Databáze: | OpenAIRE |
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