The elemental mercury was catalytically removed by V₂O₅/TiO₂ and Ce doped V₂O₅/TiO₂ catalysts under the UV irradiation at 30–160 °C to determine whether the catalysts could simultaneously have both thermo- and photo-catalytic activities. The physicochemical properties of catalysts were characterized by XRD, SEM, EDX, BET, XPS, UV–visible, PER and EIS. The experimental results demonstrated that V₂O₅/TiO₂ and Ce-doped catalysts possessed both thermo- and photo-catalytic reactivities. A suitable reaction temperature (120 °C) and UV light had promoting effects on mercury removal efficiency. In addition, owing to the high oxidation capability as well good oxygen storage performance of Ce⁴⁺, Ce doping could greatly improve the mercury removal properties of the catalyst, reduce the inhibition of SO₂ and make NO the component with enhanced effect. Ce doping also had the capability of enhancing the light absorption intensity in the UV region as well as the separation rate of photoinduced carriers. Finally, DFT calculations of V-Ti and Ce-V-Ti for Hg⁰ removal were investigated to further verify the experimental conclusion.

V ₂ O ₅ /TiO ₂和Ce掺杂的V ₂ O ₅ /TiO ₂催化剂在30-160°C的紫外线照射下催化去除元素汞，以确定催化剂是否可以同时具有热催化和光催化作用。活动。催化剂的理化性质通过XRD、SEM、EDX、BET、XPS、UV-visible、PER和EIS表征。实验结果表明，V ₂ O ₅ /TiO ₂和 Ce 掺杂的催化剂同时具有热和光催化反应性。合适的反应温度 (120 °C) 和紫外光对除汞效率有促进作用。此外，由于Ce ⁴⁺具有较高的氧化能力和良好的储氧性能，Ce掺杂可以大大提高催化剂的除汞性能，降低对SO ₂的抑制作用，使NO成为效果增强的组分。Ce掺杂还具有增强紫外区光吸收强度以及光致载流子分离率的能力。最后，研究了用于去除Hg ⁰的 V-Ti 和 Ce-V-Ti 的 DFT 计算，以进一步验证实验结论。