Department of BioNano Technology, Gachon University, 1342 Seongnam-daero, Sujeong-gu, Seongnam-si, Gyeonggi-do, 13120, South Korea.
Environ Res. 2022 Sep;212(Pt B):113283. doi: 10.1016/j.envres.2022.113283. Epub 2022 Apr 21.
Green synthesis of scalable, high-quality, fluorescent carbon quantum dots (CQDs) from natural biomass remains attractive due to their outstanding environmental application. CQDs are an emerging class of zero-dimensional carbon nanomaterials (<10 nm) that have recently attracted much attention due to their strong optical properties, biocompatibility, nontoxicity, uniform particle size, high photostability, low-cost synthesis, and highly tunable photoluminescence. The unique properties of CQDs possess a broad range of prospective applications in a number of fields such as metal ions detection, photocatalysis, sensing, medical diagnosis, bioimaging, and drug delivery. CQD nanostructures are synthesized using various techniques such as hydrothermal method, laser ablation, microwave irradiation, electrochemical oxidation, reflux method, and ultrasonication. However, this type of fabrication approach requires several chemical reactions including oxidation, carbonization, and pyrolysis. Green synthesis of CQDs has several advantages such as the use of low-cost and non-toxic raw materials, renewable resources, simple operations, and being environment-friendly. This review article will discuss the physicochemical properties of CQDs techniques used in the production of CQDs, and the stability of CQDs along with their applications in wastewater treatment and biomedical fields.
由于其在环境应用方面的出色表现，因此从天然生物质中绿色合成可扩展、高质量、荧光碳量子点（CQDs）仍然具有吸引力。CQDs 是一类新兴的零维碳纳米材料（<10nm），由于其强光学性质、生物相容性、无毒、粒径均匀、高光稳定性、低成本合成以及高度可调的光致发光而最近受到了广泛关注。CQDs 的独特性质在许多领域具有广泛的潜在应用，例如金属离子检测、光催化、传感、医学诊断、生物成像和药物输送。使用各种技术（例如水热法、激光烧蚀、微波辐射、电化学氧化、回流法和超声处理）来合成 CQD 纳米结构。然而，这种制造方法需要包括氧化、碳化和热解在内的多个化学反应。CQDs 的绿色合成具有使用低成本和无毒原料、可再生资源、操作简单以及环保等优点。本文综述了 CQDs 的物理化学性质、用于生产 CQDs 的技术以及 CQDs 的稳定性及其在废水处理和生物医学领域的应用。
