Abstract An amorphous phase TiO2 was fabricated via a fast and simple hydrolysis method and it was characterized with XRD, TEM, BET, UV–Vis, XPS and EPR. The as-prepared amorphous TiO2 has a specific surface area record-breaking 100 times that of crystal TiO2. The results show that the as-samples had better photocatalytic property, which was evaluated for gas-phase Hg0 oxidation under LED light, and photocatalytic efficiency reached up to 40%, which is 1.4 times that of commercial P25. It can be mainly attributed to the large specific surface area of amorphous TiO2 providing more reactive sites and its surface oxygen vacancies as carriers transport channels.

中文翻译：

---

合成以氧空位为载流子传输通道的无定形二氧化钛提高光催化活性

摘要 通过快速简单的水解方法制备了非晶相 TiO2，并用 XRD、TEM、BET、UV-Vis、XPS 和 EPR 对其进行了表征。所制备的无定形 TiO2 的比表面积是晶体 TiO2 的 100 倍。结果表明，原样具有更好的光催化性能，经 LED 光下气相 Hg0 氧化评价，光催化效率达到 40%，是商业 P25 的 1.4 倍。这主要是由于无定形 TiO2 的大比表面积提供了更多的反应位点及其表面氧空位作为载流子传输通道。