Preliminary Study of Heat Supply during Carbon Nanodots Synthesis by Microwave-assisted Method

6th Asian Physics Symposium

Nakul, F.^1 ; Aimon, A.H.^1 ; Nuryadin, B.W.^2 ; Iskandar, F.^1,3

Department of Physics, Faculty of Mathematics and Natural Sciences, Institut Teknologi Bandung, Bandung

40132, Indonesia^1

Department of Physics, Faculty of Science and Technology, UIN Sunan Gunung Djati Bandung, Bandung

40614, Indonesia^2

Research Center for Nanosciences and Nanotechnology (RCNN), Institut Teknologi Bandung, Bandung

40132, Indonesia^3

关键词: Low cytotoxicities;    Luminescence intensity;    Microwave process;    Microwave-assisted methods;    Nitrogen sources;    Phosphor materials;    Photoluminescence properties;    Yellow luminescence;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/739/1/012045/pdf
DOI  :  10.1088/1742-6596/739/1/012045

来源: IOP

【 摘 要 】

Carbon nanodots (CNDs) are known to be good phosphor materials with wide range emission band, low cytotoxicity and excellent biocompatibility. In this work, CNDs were synthesized from a precursor consisting of citric acid [C6H8O7] as carbon source and urea [(NH2)2CO] as nitrogen source through a microwave-assisted method. The heat energy supplied during the microwave process was controlled. Further, we studied the effect of citric acid mass on the photoluminescence (PL) properties of the CNDs by varying its percentage in the precursors. The optimum luminescence intensity was obtained from the sample that was produced from 1.2 wt% citric acid mass. It had a single emission band with bright yellow luminescence.