Irreversible Sulfur Cyclization to Construct a D–A Type Covalent Organic Framework with Ultrastability for Photoenhanced Gold Recovery

IF 9.1 1区材料科学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Nano Letters Pub Date : 2025-09-11 DOI:10.1021/acs.nanolett.5c03552

Yuze Chen, , , Bangdi Ge, , , Xiaowei Song*, , , Libo Sun*, , and , Zhiqiang Liang*,

{"title":"Irreversible Sulfur Cyclization to Construct a D–A Type Covalent Organic Framework with Ultrastability for Photoenhanced Gold Recovery","authors":"Yuze Chen, , , Bangdi Ge, , , Xiaowei Song*, , , Libo Sun*, , and , Zhiqiang Liang*, ","doi":"10.1021/acs.nanolett.5c03552","DOIUrl":null,"url":null,"abstract":"Covalent organic frameworks (COFs) have witnessed rapid development as gold adsorption materials in recent years, while the construction of COFs with large adsorption capacity, high selectivity, and superior stability in strong acid is still one of the great challenges. Here, we designed and synthesized a novel COF-Py-BTP and further constructed an ultrastable thiazole-linked COF-Py-BTP-NS. The thiazole ring not only synergistically captured Au(III) with the pyridine groups on the pore walls but also enhanced charge separation and transfer capabilities. Under light-assisted conditions, the gold recovery capacity was substantially improved from 2845 mg g–1 of COF-Py-BTP to 4374 mg g–1 of COF-Py-BTP-NS, meanwhile the recovery efficiency remained above 99% in the presence of various competitive cations and anions. Importantly, due to its high stability, COF-Py-BTP-NS exhibits long-term cycling stability under acidic conditions and can selectively extract Au from the leachate of waste electronic devices.","PeriodicalId":53,"journal":{"name":"Nano Letters","volume":"25 38","pages":"14115–14123"},"PeriodicalIF":9.1000,"publicationDate":"2025-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Nano Letters","FirstCategoryId":"88","ListUrlMain":"https://pubs.acs.org/doi/10.1021/acs.nanolett.5c03552","RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CHEMISTRY, MULTIDISCIPLINARY","Score":null,"Total":0}

引用次数: 0

Abstract

Covalent organic frameworks (COFs) have witnessed rapid development as gold adsorption materials in recent years, while the construction of COFs with large adsorption capacity, high selectivity, and superior stability in strong acid is still one of the great challenges. Here, we designed and synthesized a novel COF-Py-BTP and further constructed an ultrastable thiazole-linked COF-Py-BTP-NS. The thiazole ring not only synergistically captured Au(III) with the pyridine groups on the pore walls but also enhanced charge separation and transfer capabilities. Under light-assisted conditions, the gold recovery capacity was substantially improved from 2845 mg g^–1 of COF-Py-BTP to 4374 mg g^–1 of COF-Py-BTP-NS, meanwhile the recovery efficiency remained above 99% in the presence of various competitive cations and anions. Importantly, due to its high stability, COF-Py-BTP-NS exhibits long-term cycling stability under acidic conditions and can selectively extract Au from the leachate of waste electronic devices.

Abstract Image

查看原文本刊更多论文

不可逆硫环化构建具有超稳定性的D-A型共价有机骨架用于光强化金回收

近年来，共价有机骨架（COFs）作为金吸附材料得到了迅速发展，但构建具有大吸附容量、高选择性和强酸性稳定性的COFs仍是一大挑战。本文设计并合成了一种新型的COF-Py-BTP，并进一步构建了一种超稳定的噻唑连接COF-Py-BTP- ns。噻唑环不仅与孔壁上的吡啶基团协同捕获Au(III)，而且增强了电荷分离和转移能力。在光辅助条件下，COF-Py-BTP的金回收率从2845 mg g-1大幅提高到4374 mg g-1，同时在各种阳离子和阴离子竞争存在下，COF-Py-BTP- ns的金回收率均保持在99%以上。重要的是，由于其高稳定性，COF-Py-BTP-NS在酸性条件下表现出长期循环稳定性，并且可以选择性地从废弃电子设备的渗滤液中提取金。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Nano Letters 工程技术-材料科学：综合

CiteScore

16.80

自引率

2.80%

发文量

1182

审稿时长

1.4 months

期刊介绍： Nano Letters serves as a dynamic platform for promptly disseminating original results in fundamental, applied, and emerging research across all facets of nanoscience and nanotechnology. A pivotal criterion for inclusion within Nano Letters is the convergence of at least two different areas or disciplines, ensuring a rich interdisciplinary scope. The journal is dedicated to fostering exploration in diverse areas, including: - Experimental and theoretical findings on physical, chemical, and biological phenomena at the nanoscale - Synthesis, characterization, and processing of organic, inorganic, polymer, and hybrid nanomaterials through physical, chemical, and biological methodologies - Modeling and simulation of synthetic, assembly, and interaction processes - Realization of integrated nanostructures and nano-engineered devices exhibiting advanced performance - Applications of nanoscale materials in living and environmental systems Nano Letters is committed to advancing and showcasing groundbreaking research that intersects various domains, fostering innovation and collaboration in the ever-evolving field of nanoscience and nanotechnology.