Gupta Nishesh Kumar, López-Olvera Alfredo, González-Zamora Eduardo, Martínez-Ahumada Eva, Ibarra Ilich A
University of Science and Technology (UST), Daejeon, 34113, Republic of Korea.
Department of Land, Water, and Environment Research, Korea Institute of Civil Engineering and Building Technology (KICT), Goyang, 10223, Republic of Korea.
Chempluschem. 2022 Jun;87(6):e202200006. doi: 10.1002/cplu.202200006. Epub 2022 Feb 22.
Capture, storage and subsequent controlled release or transformation of sulfur dioxide (SO ) in mild conditions is still a challenge in the material science field. Recent advances in the use of porous materials have demonstrated good SO capture, particularly in metal-organic frameworks (MOFs), metal-organic cages (MOCs), and porous organic cages (POCs). The striking feature of these porous materials is the high SO uptake capacity in reversible settings. A partially fluorinated MIL-101(Cr) is stand-alone material with the highest SO uptake in chemically stable MOFs. Likewise, metal-free adsorbents like POCs exhibits a reversible SO uptake behavior. The SO adsorption characteristics of these three structurally and functionally unique adsorbent systems are highly dependent on the binding sites and mode of binding of SO molecules. This Review has highlighted the preferential binding sites in these materials to give a full perspective on the field. We anticipate that it will offer valuable information on the progress made towards improving SO capture by hybrid systems.
在温和条件下捕获、储存以及随后对二氧化硫（SO₂）进行可控释放或转化，在材料科学领域仍是一项挑战。多孔材料应用方面的最新进展已证明其对SO₂具有良好的捕获能力，尤其是在金属有机框架（MOF）、金属有机笼（MOC）和多孔有机笼（POC）中。这些多孔材料的显著特点是在可逆条件下具有高SO₂吸附容量。部分氟化的MIL-101（Cr）是化学稳定的MOF中SO₂吸附量最高的独立材料。同样，像POC这样的无金属吸附剂也表现出可逆的SO₂吸附行为。这三种结构和功能独特的吸附剂体系对SO₂的吸附特性高度依赖于SO₂分子的结合位点和结合方式。本综述着重介绍了这些材料中的优先结合位点，以便全面了解该领域。我们预计它将为通过混合体系改善SO₂捕获方面取得的进展提供有价值的信息。
