Photocatalytic hydrogen production from water/methanol solutions over highly ordered Ag–SrTiO3 nanotube arrays
✍ Scribed by Jiawen Liu; Yue Sun; Zhonghua Li; Shuying Li; Jingxiang Zhao
- Publisher
- Elsevier Science
- Year
- 2011
- Tongue
- English
- Weight
- 706 KB
- Volume
- 36
- Category
- Article
- ISSN
- 0360-3199
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✦ Synopsis
The highly ordered AgeSrTiO 3 nanotube arrays (NTAs) with uniform size were successfully synthesized by a combination of anodic oxidation, hydrothermal process and photocatalytic reduction method. X-ray photoelectron spectroscopy analysis reveals that Ag exists in the form of metallic silver, which is in good agreement with the X-ray diffraction characterization. Moreover, the UVevis diffuse reflectance spectra indicate that AgeSrTiO 3 NTAs have a strong absorption in the visible region which is attributed to the plasmon resonance of silver nanoparticles. After Ag loading, a further improvement of the photocatalytic activity for hydrogen production was obtained. Based on the above results, a possible electron-hole transfer mechanism was also assumed.