One-pot synthesis of waste poly (vinyl-chloride) derived carbon dots for antimicrobial applications

IF 5.3 2区化学 Q2 CHEMISTRY, PHYSICAL

Journal of Molecular Liquids Pub Date : 2024-11-23 DOI:10.1016/j.molliq.2024.126540

Hardeep Kaur , Kashish Garg , Anshi Gupta , Subhendu Chakroborty , T. Jaison Jose , Ibrahim A. Darwish , Sandeep Kumar Shukla

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引用次数: 0

Abstract

In the present scenario, poor waste management practices have caused the worldwide accumulation of plastic, leading to an increase in the magnitude of life-threatening diseases. Among them, the thermo-stable Poly (Vinyl-Chloride) (PVC) is the most harmful plastic pollutant found in pipes, flex, toys, and so on. Meanwhile, PVC flex having a 45-day life span, is widely employed in the field of marketing or advertising purposes, which ultimately finds its way into the landfills. This work focuses upon the upcycling of these banners by undergoing the facile hydrothermal synthesis, which was further characterized by UV–vis-spectroscopy, Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD) and high-resolution transmission electron microscopy (HR-TEM). The outcomes revealed the presence of crystalline structure in P-CD₁ & P-CD₃ and the amorphous structure in P-CD₂, having carbon (C), nitrogen (N), hydrogen (H), Oxygen (O), and chlorine (Cl) in them. Additionally, these synthesized carbon dots, especially P-CD₃ having a particle size of 2.04 ± 0.86 nm show excellent effects against Bacillus cereus with a zone of 1.7 cm. and Candida oralis with a zone of 3.4 cm.

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用于抗菌应用的废弃聚（氯乙烯）衍生碳点的一步法合成

在当前情况下，不良的废物管理方法造成了全球范围内塑料的积累，导致威胁生命的疾病数量增加。其中，热稳定性最强的聚氯乙烯（PVC）是管道、软管、玩具等中最有害的塑料污染物。同时，PVC 柔性材料的寿命只有 45 天，被广泛用于市场营销或广告目的，最终进入垃圾填埋场。这项工作的重点是通过简单的水热合成法对这些横幅进行升级再利用，并通过紫外-可见光谱、傅立叶变换红外光谱、X 射线衍射和高分辨率透射电子显微镜对其进行进一步表征。结果表明，P-CD1 & P-CD3 为晶体结构，P-CD2 为无定形结构，其中含有碳（C）、氮（N）、氢（H）、氧（O）和氯（Cl）。此外，这些合成的碳点，尤其是粒径为 2.04 ± 0.86 nm 的 P-CD3 对蜡样芽孢杆菌和口腔念珠菌均有很好的抗菌效果，前者的抗菌区为 1.7 cm，后者的抗菌区为 3.4 cm。

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来源期刊

Journal of Molecular Liquids 化学-物理：原子、分子和化学物理

CiteScore

10.30

自引率

16.70%

发文量

2597

审稿时长

78 days

期刊介绍： The journal includes papers in the following areas: – Simple organic liquids and mixtures – Ionic liquids – Surfactant solutions (including micelles and vesicles) and liquid interfaces – Colloidal solutions and nanoparticles – Thermotropic and lyotropic liquid crystals – Ferrofluids – Water, aqueous solutions and other hydrogen-bonded liquids – Lubricants, polymer solutions and melts – Molten metals and salts – Phase transitions and critical phenomena in liquids and confined fluids – Self assembly in complex liquids.– Biomolecules in solution The emphasis is on the molecular (or microscopic) understanding of particular liquids or liquid systems, especially concerning structure, dynamics and intermolecular forces. The experimental techniques used may include: – Conventional spectroscopy (mid-IR and far-IR, Raman, NMR, etc.) – Non-linear optics and time resolved spectroscopy (psec, fsec, asec, ISRS, etc.) – Light scattering (Rayleigh, Brillouin, PCS, etc.) – Dielectric relaxation – X-ray and neutron scattering and diffraction. Experimental studies, computer simulations (MD or MC) and analytical theory will be considered for publication; papers just reporting experimental results that do not contribute to the understanding of the fundamentals of molecular and ionic liquids will not be accepted. Only papers of a non-routine nature and advancing the field will be considered for publication.