塑料废物衍生的碳点:回收有价值材料对环境可持续性的见解

IF 6.4 2区 环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES
Arpita, Parmod Kumar, Navish Kataria, Nishita Narwal, Sandeep Kumar, Ravi Kumar, Kuan Shiong Khoo, Pau Loke Show
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引用次数: 4

摘要

碳点(cd)或碳量子点(CQDs)由于其在各个领域的广泛应用而成为碳家族中的新星。CDs是球形颗粒,粒径小于10nm,分布均匀。功能cd是一种低毒性、低成本的纳米材料,在生物成像、光电子、光催化和传感等领域有着广阔的应用前景。塑料是不可生物降解的,对环境有害,但它非常耐用,而且被大量使用。在2019冠状病毒病大流行期间,塑料废物的使用量,特别是口罩、护目镜、面罩和鞋套的使用量大幅增加。它需要以有效的方式回收,因为塑料废物需要数百年或数千年才能自然降解。据报道,将塑料废物转化为精美的cd是环境可持续性和社会经济效益的关键替代方案之一。本文综述了利用水热法、溶剂热法、热解法、闪焦耳加热法等将塑料废弃物转化为CDs的合成途径,以及利用傅里叶变换红外光谱、拉曼光谱、x射线衍射和透射电镜等不同技术对CDs进行表征。此外,本文还总结了这些塑料衍生cd在传感、催化、农学和LED灯方面的潜在应用。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Plastic Waste-Derived Carbon Dots: Insights of Recycling Valuable Materials Towards Environmental Sustainability

Plastic Waste-Derived Carbon Dots: Insights of Recycling Valuable Materials Towards Environmental Sustainability

Carbon dots (CDs) or carbon quantum dots (CQDs) have emerged as rising stars in the carbon family due to their diverse applications in various fields. CDs are spherical particles with a well-distributed size of less than 10 nm. Functional CDs are promising nanomaterials with low toxicity, low cost, and enormous applications in the field of bioimaging, optoelectronics, photocatalysis, and sensing. Plastic is non-biodegradable and hazardous to the environment, however extremely durable and used in abundance. During the COVID-19 pandemic, the use of plastic waste, particularly masks, goggles, face shields, and shoe cover, has increased tremendously. It needs to be recycled in a productive way as plastic wastes take hundreds or thousands of years to degrade naturally. The conversion of plastic waste into magnificent CDs has been reported as one of the key alternatives for environmental sustainability and socio-economic benefits. In this review, synthetic routes for the conversion of plastic wastes into CDs utilizing hydrothermal, solvothermal, pyrolysis, flash joule heating, and characterization of these CDs using different techniques, such as Fourier-transform infrared spectroscopy, Raman spectroscopy, X-ray diffraction, and transmission electron microscope, have been discussed. Furthermore, potential applications of these plastic-derived CDs in sensing, catalysis, agronomics, and LED lights are summarized herein.

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来源期刊
Current Pollution Reports
Current Pollution Reports Environmental Science-Water Science and Technology
CiteScore
12.10
自引率
1.40%
发文量
31
期刊介绍: Current Pollution Reports provides in-depth review articles contributed by international experts on the most significant developments in the field of environmental pollution.By presenting clear, insightful, balanced reviews that emphasize recently published papers of major importance, the journal elucidates current and emerging approaches to identification, characterization, treatment, management of pollutants and much more.
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