A flower-like TiO₂ photocatlyst has been fabricated using hydrothermal method with the changing of sodium hydroxide volume to control the morphology so as to enhance the photocataltic activity. The as-prepared photocatalysts has entire anatase phase with numerous nanowires covered on its surface, which structure is conducive to the higher BET surface area (86.7910 m²/g) and lower recombination between holes and photoelectrons. The photocatalytic ability was tested by oxidation of gaseous Hg⁰ in a lab-scale reactor, and TiO₂-5 is found to be the best efficiency and 80 °C is the optimum photocatalytic reaction temperature. The photocatalytic oxidation mechanism has also been proposed.

利用水热法制备了花状的TiO ₂光催化剂，改变氢氧化钠的体积来控制其形貌，从而增强光催化活性。所制备的光催化剂具有完整的锐钛矿相，其表面覆盖有许多纳米线，该结构有利于较高的BET表面积（86.7910 m ² / g）和较低的空穴与光电子之间的重组。通过在实验室规模的反应器中氧化气态Hg ⁰来测试光催化能力，发现TiO ₂ -5是最佳效率，而80°C是最佳光催化反应温度。还提出了光催化氧化机理。