Direct 3D Printing of Reactive Agitating Impellers for the Convenient Treatment of Various Pollutants in Water,Advanced Materials Interfaces

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Direct 3D Printing of Reactive Agitating Impellers for the Convenient Treatment of Various Pollutants in Water
Advanced Materials Interfaces ( IF 4.3 ) Pub Date : 2018-02-09 , DOI: 10.1002/admi.201701626
Xueyan Sun ₁ , Ying Yan ₂ , Lijing Zhang ₁ , Guangxin Ma ₃ , Yang Liu ₁ , Yongxian Yu ₁ , Qi An ₄ , Shengyang Tao ₁

Affiliation

Mass transfer plays a key role in the diffusion‐controlled heterogeneous reactions. Varied efforts have been made to design the structure of catalysts and reactors to optimize the diffusion process. Herein, a facile strategy is reported to construct highly reactive agitating impeller (denoted as AI) by employing 3D printing and a facile surface activation treatment. On the one hand, experimental results and numerical simulation analysis reveal that the 3D printing AI with appropriate structure can not only effectively eliminate external diffusion but also conveniently be separated from heterogeneous reaction systems. On the other hand, surface activation helps to significantly promote the chemical reactivity of AI for Fenton and galvanic replacement reaction, which are used to treat organic and inorganic pollutants in water, respectively. Benefiting from these cooperative merits, the integrated catalytic AI delivers a catalytic performance toward Fenton reactions as high as a homogeneous catalyst, and the removal rate for heavy metal ions is nearly 100% through galvanic replacement. This 3D printing with surface engineering strategy should also be extended to other applications, and provide new field for preparing efficient and durable heterogeneous catalysts in a more economical way.

中文翻译：

直接3D打印反应性搅拌叶轮，可方便地处理水中的各种污染物

传质在扩散控制的异质反应中起关键作用。在设计催化剂和反应器的结构以优化扩散过程方面已经做出了各种努力。在本文中，据报道，通过采用3D打印和简便的表面活化处理来构造高反应性搅拌叶轮（表示为AI）的简便策略。一方面，实验结果和数值模拟分析表明，具有适当结构的3D打印AI不仅可以有效消除外部扩散，而且还可以方便地与异质反应体系分离。另一方面，表面活化有助于显着提高AI对Fenton和电流置换反应的化学反应性，这分别用于处理水中的有机和无机污染物。得益于这些协同优点，集成的催化AI对Fenton反应的催化性能高达均相催化剂，并且通过电置换对重金属离子的去除率接近100％。这种具有表面工程策略的3D打印也应扩展到其他应用，并为以更经济的方式制备高效，耐用的非均相催化剂提供新的领域。

更新日期：2018-02-09

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