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Insights into the Adsorption of VOCs on a Cobalt-Adeninate Metal-Organic Framework (Bio-MOF-11).
ACS Omega ( IF 3.7 ) Pub Date : 2020-06-15 , DOI: 10.1021/acsomega.0c01504 Ruofei Chen 1, 2 , Zhengxin Yao 2 , Ning Han 2 , Xiancheng Ma 1 , Liqing Li 1 , Shaomin Liu 2 , Hongqi Sun 3 , Shaobin Wang 2, 4
ACS Omega ( IF 3.7 ) Pub Date : 2020-06-15 , DOI: 10.1021/acsomega.0c01504 Ruofei Chen 1, 2 , Zhengxin Yao 2 , Ning Han 2 , Xiancheng Ma 1 , Liqing Li 1 , Shaomin Liu 2 , Hongqi Sun 3 , Shaobin Wang 2, 4
Affiliation
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With increasingly severe air pollution brought by volatile organic compounds (VOCs), the search for efficient adsorbents toward VOC removal is of great significance. Herein, an adenine-based metal–organic framework, namely, bio-MOF-11 [Co2(ad)2(CH3CO2)2·0.3EtOH·0.6H2O, ad = adeninate], was synthesized via a facile method, and its VOC adsorption was reported for the first time. This novel bio-MOF-11 was investigated by employing four common VOCs (i.e., methanol, acetone, benzene, and toluene) as adsorbates. The saturated adsorption capacity of these targeted VOCs on bio-MOF-11 was estimated to be 0.73–3.57 mmol/g, following the order: toluene < benzene < acetone < methanol. Furthermore, with the adsorption temperature increasing from 288 to 308 K, the saturated adsorption capacity was reduced by 7.3–35.6%. It is worth noting that acetone adsorption is most sensitive to temperature ascribed to its low boiling point and strong polar nature. Meanwhile, owing to the molecular sieve effect, the adsorption capacity appears negatively correlated to the size of VOC molecules. Besides, the abundant exposed nitrogen atoms and amino groups in bio-MOF-11 cavities facilitate the adsorption of polar VOC molecules. This work promotes the fundamental understanding and practical application of bio-MOF for adsorptive removal of VOCs.
中文翻译：
洞察力-腺嘌呤钴金属有机骨架上对VOC的吸附（Bio-MOF-11）。
随着挥发性有机化合物（VOC）带来的日益严重的空气污染，寻找有效的吸附剂以去除VOC具有重要意义。此处，基于腺嘌呤的金属-有机骨架，即bio-MOF-11 [Co 2（ad）2（CH 3 CO 2）2 ·0.3EtOH·0.6H 2O，ad = adeninate]，是通过一种简便的方法合成的，首次报道了它的VOC吸附。通过使用四种常见的VOC（即甲醇，丙酮，苯和甲苯）作为吸附物，研究了这种新型的MOF-11。这些目标VOC在bio-MOF-11上的饱和吸附容量估计为0.73-3.57 mmol / g，顺序为：甲苯<苯<丙酮<甲醇。此外，随着吸附温度从288 K升高到308 K，饱和吸附容量降低了7.3–35.6％。值得注意的是，丙酮的吸附对温度最敏感，归因于其低沸点和强极性。同时，由于分子筛效应，吸附能力似乎与VOC分子的大小呈负相关。除了，生物MOF-11腔中大量暴露的氮原子和氨基促进极性VOC分子的吸附。这项工作促进了生物MOF吸附去除VOC的基本理解和实际应用。
更新日期：2020-06-30
中文翻译：
洞察力-腺嘌呤钴金属有机骨架上对VOC的吸附（Bio-MOF-11）。
随着挥发性有机化合物（VOC）带来的日益严重的空气污染，寻找有效的吸附剂以去除VOC具有重要意义。此处，基于腺嘌呤的金属-有机骨架，即bio-MOF-11 [Co 2（ad）2（CH 3 CO 2）2 ·0.3EtOH·0.6H 2O，ad = adeninate]，是通过一种简便的方法合成的，首次报道了它的VOC吸附。通过使用四种常见的VOC（即甲醇，丙酮，苯和甲苯）作为吸附物，研究了这种新型的MOF-11。这些目标VOC在bio-MOF-11上的饱和吸附容量估计为0.73-3.57 mmol / g，顺序为：甲苯<苯<丙酮<甲醇。此外，随着吸附温度从288 K升高到308 K，饱和吸附容量降低了7.3–35.6％。值得注意的是，丙酮的吸附对温度最敏感，归因于其低沸点和强极性。同时，由于分子筛效应，吸附能力似乎与VOC分子的大小呈负相关。除了，生物MOF-11腔中大量暴露的氮原子和氨基促进极性VOC分子的吸附。这项工作促进了生物MOF吸附去除VOC的基本理解和实际应用。
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