The removal of nitrogen-containing compounds (NCCs), such as Indole (IND) and Quinoline (QUI), is important to the environmental protection. In this work, one of porous material, NH₂-MIL-125(Ti) was used as adsorbents for adsorptive removal of NCCs. Its adsorption capacity has the order of NH₂-MIL-125@300 °C < NH₂-MIL-125@150 °C < NH₂-MIL-125@200 °C < NH₂-MIL-125@250 °C. NH₂-MIL-125@250 °C exhibits the best adsorption ability, reaches as high as 262 mg/g, 251 mg/g for IND and QUI, respectively. Our samples are fully characterized and the adsorption mechanism was explored by computational/experimental method. It is found that, besides π-π and hydrogen bonding interaction, rich oxygen vacancies also promote to enhanced NCCs adsorption. This work provides a facile method of manufacturing high efficient adsorbents.

去除含氮化合物 (NCC)，如吲哚 (IND) 和喹啉 (QUI)，对环境保护很重要。在这项工作中，一种多孔材料，NH ₂ -MIL-125(Ti) 被用作吸附剂来吸附去除 NCC。其吸附容量为NH ₂ -MIL-125@300 °C < NH ₂ -MIL-125@150 °C < NH ₂ -MIL-125@200 °C < NH ₂ -MIL-125@250 °C . NH ₂-MIL-125@250 °C 表现出最好的吸附能力，IND 和 QUI 的吸附能力分别高达 262 mg/g、251 mg/g。我们的样品得到了充分表征，并通过计算/实验方法探索了吸附机制。研究发现，除了 π-π 和氢键相互作用外，丰富的氧空位也促进了 NCCs 的吸附。这项工作提供了一种制造高效吸附剂的简便方法。