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求助翻译段落（英译汉，化学相关）
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| Titanium-oxide nanotube arrays in the form of films on the surface of titanium have been synthesized by anodization of titanium metal foil in HF-free aqueous solutions. An asprepared ATO film is amorphous; however, it becomes anatase with maintained nanotube array morphology after being annealed at 500 ℃ in an argon atmosphere. At 800℃ ，a pure rutile crystalline phase can be obtained, but with the loss of nanotube array morphology. Application of UV light produced a significant increase in the measured photocurrent values for both the anatase and the rutile films. Anatase films showed the highest increase in photocurrent generation. The interaction between the TiO2 nanotubes at the anode and the incident UV light was confirmed by the color change of the electrode. Anatase films showed the highest efficiency of all the tested materials, about 5.9%. Rutile films showed a maximum value of 3.8%. These results demonstrate that one can use light to generate photocurrent and produce hydrogen by water splitting . |
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