Photocatalytic detoxification of a sulfur mustard simulant by donor-enhanced porphyrin-based Covalent-Organic Frameworks

IF 5.8 3区材料科学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Nanoscale Pub Date : 2025-01-15 DOI:10.1039/d4nr05302h

Yana Chen, Zewen Shen, Yezi Hu, Haotian Zhang, Lisha Yin, Guixia Zhao, Guangtong Hai, Xiubing Huang

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引用次数: 0

Abstract

Photocatalytic detoxification of sulfur mustards (e.g., bis (2-chloroethyl) sulfide, SM) is an effective approach to protect the ecological environment and human health. In order to fabricate COFs with high performance for the selective transformation of SM simulant 2-chloroethyl ethyl sulfide (CEES) to nontoxic 2-chloroethyl ethyl sulfoxide (CEESO), three porphyrin-based COFs with different donor groups (R=H, OH, OMe) were synthesized. Among these COFs, COF-OMe, which possesses the strongest electron-donating ability, demonstrated a faster and higher detoxification rate of CEES at various concentrations, achieving selective oxidation of CEES to non-toxic CEESO with 99.2% conversion and 100% selectivity using white LED light irradiation within three hours. The facilitated charge transfer and separation as well as efficaciously produced reactive oxygen species (ROS) including singlet oxygen (1O2) and superoxide radical anions (O2•−) are supposed to contribute to the excellent performance. The results demonstrated that the donor-enhanced porphyrin-based COFs could act as heterogeneous photocatalysts for visible light driven organics transformation and detoxification of sulfur mustards.

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基于给体增强卟啉共价有机框架的芥菜模拟物光催化解毒研究

硫芥（如双（2-氯乙基）硫醚，SM）的光催化解毒是保护生态环境和人类健康的有效途径。为了制备能将SM模拟物2-氯乙基乙硫醚（CEES）选择性转化为无毒的2-氯乙基乙基亚砜（CEESO）的高性能COFs，合成了3种不同给基（R=H， OH, OMe）的卟啉基COFs。在这些COFs中，给电子能力最强的COFs - ome在不同浓度下对CEES的解毒速率更快、更高，在白光LED照射3小时内，CEES可选择性氧化为无毒CEESO，转化率为99.2%，选择性为100%。促进电荷转移和分离以及有效产生的活性氧（ROS），包括单线态氧（1O2）和超氧自由基（O2•−），被认为是促成优异性能的原因。结果表明，供体增强卟啉基COFs可以作为可见光驱动有机转化和硫芥菜解毒的多相光催化剂。

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来源期刊

Nanoscale CHEMISTRY, MULTIDISCIPLINARY-NANOSCIENCE & NANOTECHNOLOGY

CiteScore

12.10

自引率

3.00%

发文量

1628

审稿时长

1.6 months

期刊介绍： Nanoscale is a high-impact international journal, publishing high-quality research across nanoscience and nanotechnology. Nanoscale publishes a full mix of research articles on experimental and theoretical work, including reviews, communications, and full papers.Highly interdisciplinary, this journal appeals to scientists, researchers and professionals interested in nanoscience and nanotechnology, quantum materials and quantum technology, including the areas of physics, chemistry, biology, medicine, materials, energy/environment, information technology, detection science, healthcare and drug discovery, and electronics.