Removal of highly toxic H₂S for pollution control and operational safety is a pressing need. For this purpose, a montmorillonite intercalated with Cu(II)-phenanthroline complex [Cu[(Phen)(H₂O)₂]²⁺ (Mt-CuPhen) was prepared to capture gaseous H₂S under mild conditions. This hybrid material was simple to obtain and demonstrated an outstanding ability to entrap H₂S at room temperature, retaining high efficiency for a very long time (up to 36.8 g of S/100 g Mt-CuPhen after 3 months of exposure). Sorbent and H₂S uptake were investigated by elemental analysis, X-ray powder diffraction measurements, diffuse reflectance (DR) UV–Vis and infrared spectroscopy, thermal analysis and evolved gas mass spectrometry, scanning electron microscopy equipped with energy-dispersive X-ray spectrometer, and X-ray absorption spectroscopy. The H₂S capture was studied over time and a mechanism of action was proposed. The entrapping involves a catalytic mechanism in which [Cu[(Phen)(H₂O)₂]²⁺ acts as catalyst for H₂S oxidation to S⁰ by atmospheric oxygen. The low cost and the long-lasting performance for H₂S removal render Mt-CuPhen an extremely appealing trap for H₂S removal and a promising material for many technological applications.

中文翻译：

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层间封闭的铜（II）配合物是一种高效持久的蒙脱石上硫化氢硫化氢的催化剂

迫切需要去除剧毒的H ₂ S以控制污染和操作安全。为了这个目的，蒙脱石插层与铜（II）-phenanthroline络合物[铜[（phen）的（H ₂ O）₂ ] ²⁺（MT-CuPhen）制备捕获气态ħ ₂气候温和的条件下。这种杂化材料很容易获得，并且在室温下具有出色的捕获H ₂ S的能力，可以在很长一段时间内保持高效率（暴露3个月后高达36.8 g S / 100 g Mt-CuPhen）。吸附剂和H ₂通过元素分析，X射线粉末衍射测量，漫反射（UV）可见光和红外光谱，热分析和演化气体质谱，配备能量色散X射线光谱仪的扫描电子显微镜和X来研究吸收射线吸收光谱法。随着时间的推移对H ₂ S的捕获进行了研究，并提出了作用机理。截留涉及其中[Cu [（Phen）（H ₂ O）₂ ] ²⁺作为由大气氧将H ₂ S氧化为S ⁰的催化剂的催化机理。低成本和持久的H ₂ S去除性能使Mt-CuPhen成为H ₂极具吸引力的诱捕器S去除和许多技术应用中有希望的材料。