Adsorption method has been proved an effective method to remove low-concentration volatile organic compounds (VOCs) from the flue gas, however, it is challenged by the rapid deficiency of adsorption capacity under humid environment, due to the collapse of pore structure or more inclined adsorption for water than low-polarity VOCs such as BTEX. Therefore, developing adsorbents with high hydrothermal stability and hydrophobicity is urgently needed and very important. The outstanding chemical, thermal and structural stability enable UiO-66 a promising adsorbent candidate, however, hydrophobic modification is required to an obtain high adsorption capacity of BTEX in the humid flue gas. In this work, non-polar functional groups naphthyl groups were introduced into UiO-66 to increase hydrophobicity, so that the materials maintain stability and high adsorption efficiency in humid environments. UiO-66-NDC(X = 25,50,100) was synthesized by using 1,4-naphthalenedicarboxlic acid to substitute X percent terephthalic acid in a solvothermal process. Dynamic adsorption experiments were carried out to test the adsorption performance of toluene on UiO-66 and UiO-66-NDC(X). Compared with the pristine UiO-66, the modified adsorbent present improved adsorption capacity in varied humidity, especially, UiO-66-NDC (50) presents the highest toluene adsorption capacity at a relative humidity (RH) of 50%, increased by 69% compared with pristine UiO-66. Furthermore, the modified samples exhibited an excellent recyclability performance, which maintains a higher toluene adsorption capacity after five cycles, indicating that UiO-66-NDC (X) is an effective and regenerative adsorbent in humid environments.

吸附法已被证明是去除烟气中低浓度挥发性有机化合物（VOCs）的有效方法，但在潮湿环境下，由于孔隙结构坍塌或更倾斜，吸附能力迅速不足，面临着挑战。与低极性 VOC（如 BTEX）相比，对水的吸附能力更强。因此，开发具有高水热稳定性和疏水性的吸附剂是迫切需要和非常重要的。出色的化学、热和结构稳定性使 UiO-66 成为有前途的吸附剂候选者，然而，需要疏水改性才能在潮湿烟气中获得高 BTEX 吸附能力。在这项工作中，将非极性官能团萘基引入 UiO-66 以增加疏水性，使材料在潮湿环境中保持稳定性和高吸附效率。UiO-66-NDC(X = 25,50,100) 是通过使用 1,4-萘二甲酸在溶剂热法中取代 X% 的对苯二甲酸而合成的。通过动态吸附实验测试甲苯对UiO-66和UiO-66-NDC(X)的吸附性能。与原始UiO-66相比，改性后的吸附剂在不同湿度下的吸附能力都有所提高，尤其是UiO-66-NDC(50)在相对湿度(RH)为50%时对甲苯的吸附能力最高，提高了69%与原始的 UiO-66 相比。此外，改性样品表现出优异的可回收性，在五次循环后仍保持较高的甲苯吸附能力，