Highly sensitive fluorescent probe for Cr3+ detection using carbon quantum dots
- 10.2991/ifeesm-17.2018.164How to use a DOI?
- Carbon quantum dots, Hydrogen peroxide, Fluorescent probe, Cr3+
Carbon quantum dots (CQDs) had been widely applied in the metal ions detection area due to their excellent optical properties and low toxicity. Herein, a series of CQDs with different sizes were prepared by a facile but effective hydrogen peroxide (H2O2) oxidative method using activated carbon as carbon source. Experimental results showed that the concentration of H2O2 aqueous solution had critical effect on the sizes and surface structure of CQDs. When H2O2 aqueous solution was 20 wt.%, the diameter of CQDs was 3.6 nm, and the fluorescent probe exhibited a good linear response to Cr3+ in the concentration range from 0.2 to 55 M with a detection limit of 0.2 M. Through systematically analyzing FTIR, XPS and the optical properties of CQDs, the high sensitivity of CQDs for detecting Cr3+ was attributed to the synergistic effect of the surface oxygen-containing functional groups and size of CQDs.
- © 2018, the Authors. Published by Atlantis Press.
- Open Access
- This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).
Cite this article
TY - CONF AU - Chengfeng Huangfu AU - Juanyuan Hao AU - Ce Hao PY - 2018/02 DA - 2018/02 TI - Highly sensitive fluorescent probe for Cr3+ detection using carbon quantum dots BT - Proceedings of the 2017 3rd International Forum on Energy, Environment Science and Materials (IFEESM 2017) PB - Atlantis Press SP - 871 EP - 877 SN - 2352-5401 UR - https://doi.org/10.2991/ifeesm-17.2018.164 DO - 10.2991/ifeesm-17.2018.164 ID - Huangfu2018/02 ER -