Kaur Inderbir, Batra Vandana, Bogireddy Naveen K R, Baveja Jasmina, Kumar Y, Agarwal V
Department of Electronic Science, Bhaskaracharya College of Applied Sciences, University of Delhi, Delhi, India.
Department of Physics, Bhaskaracharya College of Applied Sciences, University of Delhi, Delhi, India.
iScience. 2024 Jan 17;27(2):108920. doi: 10.1016/j.isci.2024.108920. eCollection 2024 Feb 16.
Rapid industrialization and untreated industrial effluents loaded with toxic and carcinogenic contaminants, especially dyes that discharge into environmental waters, have led to a rise in water pollution, with a substantial adverse impact on marine life and humankind. Photocatalytic techniques are one of the most successful methods that help in degradation and/or removal of such contaminants. In recent years, semiconductor quantum dots are being substituted by carbon dots (CDs) as photocatalysts, due to the ease of formation, cost-effectiveness, possible sustainability and scalability, much lower toxicity, and above all its high capacity to harvest sunlight (UV, visible, and near infrared) through electron transfer that enhances the lifetime of the photogenerated charge carriers. A better understanding between the properties of the CDs and their role in photocatalytic degradation of dyes and contaminants is required for the formation of controllable structures and adjustable outcomes. The focus of this review is on CDs and its composites as photocatalysts obtained from different sustainable green as well as chemical precursors. Apart from the synthesis, characterization, and properties of the CDs, the study also highlights the effect of different parameters on the photocatalytic properties of CDs and their composites for catalytic dye degradation mechanisms in detail. Besides the present research development in the field, potential challenges and future perspectives are also presented.
快速工业化以及含有有毒和致癌污染物（尤其是排入环境水体的染料）的未经处理的工业废水，导致了水污染的加剧，对海洋生物和人类产生了重大不利影响。光催化技术是有助于降解和/或去除此类污染物的最成功方法之一。近年来，由于碳点（CDs）易于形成、成本效益高、具有可持续性和可扩展性、毒性低得多，最重要的是其通过电子转移捕获太阳光（紫外线、可见光和近红外光）的能力很强，可延长光生电荷载流子的寿命，因此半导体量子点正被碳点取代作为光催化剂。为了形成可控结构和可调节的结果，需要更好地理解碳点的性质及其在光催化降解染料和污染物中的作用。本综述的重点是碳点及其复合材料作为光催化剂，这些光催化剂是由不同的可持续绿色以及化学前驱体制备而成。除了碳点的合成、表征和性质外，该研究还详细强调了不同参数对碳点及其复合材料光催化性能的影响以及它们催化染料降解的机制。除了该领域目前的研究进展外，还介绍了潜在的挑战和未来展望。
