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首页> 外文期刊>Advanced Functional Materials >A new generation of catalytic poly(vinylidene fluoride) membranes: Coupling plasma treatment with chemical immobilization of tungsten-based catalysts
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A new generation of catalytic poly(vinylidene fluoride) membranes: Coupling plasma treatment with chemical immobilization of tungsten-based catalysts

机译：新一代催化聚偏二氟乙烯膜：偶联等离子体处理与化学固定钨基催化剂

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摘要

A new generation of catalytically active membranes for secondary amine oxidation and phenol degradation has been developed by coupling the advantages of low-temperature plasma-modification processes with surface chemical immobilization reactions of catalysts. Poly(vinylidene fluoride) membranes have been modified with NH3 radiofrequency glow discharges in order to graft amino groups at their surface, providing active sites for stable immobilization of tungsten-based heterogeneous catalysts. Particular attention has been focused on tungstate, WO42-, and decatungstate, W10O324-, which act efficiently as catalysts for the oxidation of secondary amines and as photocatalysts for the degradation of organic pollutants, respectively. Plasma-modified membranes surface-tailored With WO42- have been used in catalytic membrane reactors to activate hydrogen-peroxide for oxidizing secondary amines to nitrones; membranes modified with W10O324- have been used for the complete degradation of phenol. The obtained results, in terms of amine-nitrone conversion and phenol degradation, respectively, appear extremely promising; these modified membranes can be considered as a pioneering, successful example of heterogenization of W-based catalysts on plasma-treated membranes.
机译：通过将低温等离子体改性工艺的优点与催化剂的表面化学固定化反应相结合，已经开发出了用于仲胺氧化和苯酚降解的新一代催化活性膜。聚偏二氟乙烯膜已用NH3射频辉光放电改性，以便在其表面接枝氨基，从而为稳定固定基于钨的非均相催化剂提供了活性位点。钨酸WO42-和分解钨酸W10O324-特别受到关注，它们分别有效地充当仲胺氧化的催化剂和光催化降解有机污染物的催化剂。表面修饰有WO42-的等离子改性膜已用于催化膜反应器中，以活化过氧化氢将仲胺氧化为硝酮。用W10O324-改性的膜已用于苯酚的完全降解。分别在胺-硝酮转化率和苯酚降解方面获得的结果看来是非常有希望的。这些改性的膜可被认为是等离子处理过的膜上W基催化剂异质化的开创性成功实例。

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