脱色技术是目前制约废弃纺织品高品质化学回收再利用的瓶颈。为攻克现有脱色技术需添加大量试剂，易造成二次污染，脱色不完全，影响产物纯度和品质的难题，本课题拟制备高催化活性、高催化选择性的粒子结构的碳纳米管掺杂Fe3O4纳米酶（CNTs/ Fe3O4 nanozyme）和中空纳米纤维结构的Fe2O3纳米酶（α-Fe2O3及γ-Fe2O3 nanozyme）作为三维电极，建立一种新型的电催化氧化脱色方法。以广受关注的聚酯为例，实现染料的高效、精准脱色。揭示氧化铁纳米酶的成分、尺寸及形貌对其催化活性的影响机理及规律；构建电极表面的电吸附动力学及阳极氧化反应动力学模型，揭示染料分子和聚酯醇解产物在电极表面的电催化氧化反应的竞争关系和影响因素，阐明聚酯醇解液复杂体系中电催化氧化反应机理；优化电催化氧化脱色工艺条件；为发展高效快速的废弃聚酯纺织品脱色技术提供理论基础和实验依据。

Decolorization technology is the bottleneck of high quality chemical recycling of waste textiles. The existing decolorization technology needs to add a large number of reagents, which is easy to cause secondary pollution and incomplete decolorization process, affect the purity and quality of products. In order to overcome these problems, carbon nanotubes doped Fe3O4 nanozyme particles (CNTs/Fe3O4 nanozyme) and hollow nanofibers structure Fe2O3 nanozyme (α-Fe2O3 and γ-Fe2O3 nanozyme) are prepared as high catalytic activity and high catalytic selectivity three-dimensional electrodes to establish a new electro-catalytic oxidation decolorization method for efficiently and accurately decolorizing dyes in polyester. Reveal the mechanism and regularity of the effect of the iron oxide nanozyme’s catalytic activity on its composition, size and morphology. Establish the electro-adsorption kinetics and anodic oxidation kinetics models, reveal the competitive relationship between dye molecules and polyester alcoholysis products in electro-catalytic oxidation reaction. Clarify the mechanism of electro-catalytic oxidation reaction in the complex system of polyester alcoholysis solution. Optimize the reaction conditions of electro-catalytic oxidation decolorization. Provide theoretical and experimental basis for developing efficient and fast decolorization technology of waste polyester textiles.