School of Nanoscience and Technology, Indian Institute of Technology, Kharagpur 721302, India.
Rubber Technology Centre, Indian Institute of Technology, Kharagpur 721302, India.
J Photochem Photobiol B. 2018 Mar;180:56-67. doi: 10.1016/j.jphotobiol.2018.01.019. Epub 2018 Jan 31.
Proper waste disposal from household and restaurants is becoming an important and recurring waste-management concern. Herein, a method of upcycling of waste kitchen chimney oil has been adopted to prepare fluorescent multifunctional carbon quantum dots. These nanodots showed superior biocompatibility, excellent optical properties, water solubility and high yield. Preparation of C-dots from highly abundant carbon source of waste refusals is highly effective in commercial aspect as well as in reducing the immense environmental pollution. The C-dots showed quasi-spherical size obtained from high resolution transmission electron microscopy (HRTEM) having an abundance of 1-4 nm in size. The ease of water dispersibility of the nanodots is a mere reflection of their surface polarity which has been supported by Fourier transformed infrared spectroscopy (FTIR) and X-ray photoelectron spectroscopy (XPS). In the field of practical acceptability, the C-dots have been experimented to sense Fe ion in a wide range of concentration (1 nM to 600 μM) with a detection limit of 0.18 nM which can be termed as 'tracer metal chemosensor'. Moreover, the prepared carbon dots were also tested against inter-cellular Fe ion sensing probe. Lastly, we also fabricate the biopolymer‑carbon dots composite for fluorescent marker ink and light emitting polymer film.
从家庭和餐馆妥善处理废物正成为一个重要且反复出现的废物管理关注点。在此，采用了一种废厨房烟囱油的升级利用方法来制备荧光多功能碳量子点。这些纳米点表现出优异的生物相容性、出色的光学性质、水溶性和高产量。从丰富的废物废碳源制备 C 点在商业方面以及减少巨大的环境污染方面非常有效。从高分辨率透射电子显微镜（HRTEM）获得的 C 点具有准球形尺寸，尺寸在 1-4nm 之间。纳米点易于水分散性仅仅反映了它们的表面极性，这得到了傅里叶变换红外光谱（FTIR）和 X 射线光电子能谱（XPS）的支持。在实际可接受性方面，C 点已经在广泛的浓度范围内（1nM 至 600μM）对 Fe 离子进行了实验，检测限为 0.18nM，可以称为“示踪金属化学传感器”。此外，还对制备的碳点进行了细胞间 Fe 离子传感探针的测试。最后，我们还制备了用于荧光标记墨水和发光聚合物膜的生物聚合物-碳点复合材料。
