Membrane technology has become the mainstream process for the production of electronic grade hydrogen peroxide (HO). But due to the oxidation degradation of the organic membranes (. polyamide) by the strong oxidative radicals (. OH) generated the activation of HO by iron ions (Fe), the short effective lifetime of membranes remains a challenge. Inorganic nano tin oxide (SnO) has great potential for the removal of Fe in strongly oxidative HO because of its ability to stabilize HO and preferentially adsorb Fe. Herein, we have designed for the first time a flower-like robust SnO membrane on the ceramic support by template-free one-step hydrothermal method. The three-dimensional loose pore structure in the membrane built by interlacing SnO nanosheets endows the SnO membrane with a high specific surface area and abundant adsorption sites (OH). Based on the coordination complexation and electrostatic attraction between the SnO surface and Fe, the membrane shows a high Fe removal efficiency (83%) and permeability (24 L·m·h·MPa) in HO. This study provides an innovative and simple approach to designing robust SnO membranes for highly efficient removal of Fe in harsh environments, such as strong oxidation conditions.

中文翻译：

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具有坚固三维通道的花状氧化锡膜，可有效去除过氧化氢中的铁离子

膜技术已成为电子级过氧化氢（H2O）生产的主流工艺。但由于有机膜（聚酰胺）被强氧化自由基（·OH）氧化降解，铁离子（Fe）激活H2O，膜的有效寿命短仍然是一个挑战。无机纳米氧化锡（SnO）由于其稳定H2O并优先吸附Fe的能力，在去除强氧化性H2O中的Fe方面具有巨大潜力。在此，我们首次通过无模板一步水热法在陶瓷载体上设计了一种花状坚固的 SnO 膜。 SnO纳米片交错构建的膜中的三维疏松孔隙结构赋予SnO膜高比表面积和丰富的吸附位点（OH）。基于SnO表面与Fe之间的配位络合和静电引力，该膜在H2O中表现出较高的Fe去除效率（83%）和渗透率（24 L·m·h·MPa）。这项研究提供了一种创新且简单的方法来设计坚固的 SnO 膜，以便在恶劣环境（例如强氧化条件）下高效去除 Fe。