Ionic Modification of Three-Component Covalent Organic Frameworks with Antibacterial Function for Efficient and Selective Gold Recovery

IF 9.6 1区化学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

ACS Materials Letters Pub Date : 2024-12-13 DOI:10.1021/acsmaterialslett.4c0209410.1021/acsmaterialslett.4c02094

Douchao Mei, and , Bing Yan*,

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Abstract

Developing multifunctional adsorbents with exceptional capture performance and outstanding antibiofouling activity is of great significance for the recovery of gold. However, most of the reported materials only have a single adsorption function, which restricts their practical application for gold extraction from complex matrices. Herein, we construct a series of three-component covalent organic frameworks (COFs) with good antibacterial performance for the extraction of gold. All the obtained COFs show high adsorption capacities over 1250 mg·g^–1 for gold, which may be attributed to the high specific surface area, regular pore structure and abundant binding sites. In particular, the optimized materials COF-TPTD-DHTA-TAB gives excellent adsorption capacity (2884 mg·g^–1), ultrafast adsorption kinetics (60 min) and high distribution coefficient (K_d > 4 × 10⁵ mL·g^–1). More importantly, good sterilization performance is observed on both COF-TPTD-DHTA and COF-TPTD-DHTA-TAB under visible light irradiation. This work provides a paradigm to develop ionic three-component COFs with antibacterial activity for gold recovery.

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具有抗菌功能的三组分共价有机骨架的离子修饰高效选择性回收金

开发具有优异的捕集性能和良好的抗污活性的多功能吸附剂对金的回收具有重要意义。然而，大多数报道的材料只有单一的吸附功能，这限制了它们在复杂基质中提取金的实际应用。在此，我们构建了一系列具有良好抗菌性能的三组分共价有机框架（COFs）用于金的提取。所制备的COFs对金的吸附能力均高于1250 mg·g-1，这可能与COFs具有较高的比表面积、规则的孔隙结构和丰富的结合位点有关。优化后的材料COF-TPTD-DHTA-TAB具有优良的吸附量（2884 mg·g-1）、超快的吸附动力学（60 min）和较高的分布系数(Kd >；4 × 105 mL·g-1)。更重要的是，COF-TPTD-DHTA和COF-TPTD-DHTA- tab在可见光照射下均具有良好的杀菌性能。本研究为开发具有抗菌活性的离子三组分COFs提供了一个范例。

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来源期刊

ACS Materials Letters MATERIALS SCIENCE, MULTIDISCIPLINARY-

CiteScore

14.60

自引率

3.50%

发文量

261

期刊介绍： ACS Materials Letters is a journal that publishes high-quality and urgent papers at the forefront of fundamental and applied research in the field of materials science. It aims to bridge the gap between materials and other disciplines such as chemistry, engineering, and biology. The journal encourages multidisciplinary and innovative research that addresses global challenges. Papers submitted to ACS Materials Letters should clearly demonstrate the need for rapid disclosure of key results. The journal is interested in various areas including the design, synthesis, characterization, and evaluation of emerging materials, understanding the relationships between structure, property, and performance, as well as developing materials for applications in energy, environment, biomedical, electronics, and catalysis. The journal has a 2-year impact factor of 11.4 and is dedicated to publishing transformative materials research with fast processing times. The editors and staff of ACS Materials Letters actively participate in major scientific conferences and engage closely with readers and authors. The journal also maintains an active presence on social media to provide authors with greater visibility.