Related Experiment Video
Updated: Feb 27, 2026
Compact Quantum Dots for Single-molecule Imaging
Published on: October 9, 2012
Highly fluorescent carbon quantum dots as nanoprobes for sensitive and selective determination of mercury (II) in
Jianhao Hua1, Jian Yang2, Yan Zhu2
1Faculty of Life Science and Technology, Kunming University of Science and Technology, Yunnan Province 650500, China.
Abstract:
A novel carbon quantum dots (CQDs) was successfully prepared through one-step green hydrothermal method using polyacrylamide as carbon source. The prepared CQDs were characterized using TEM, XRD, XPS, FT-IR, UV-Vis, and fluorescence spectroscopy. The CQDs was demonstrated as nanoprobes for mercury ion detection, moreover, it demonstrated excitation-dependent and superior stability in acidic and alkaline media. Besides, the probe exhibited a good linearity range (0.25-50μM) and a low detection limit (13.48nM). These attractive properties indicated that this novel CQDs can adapt to a variety of complex pH environment, which had extensive prospect and promising application for detection of mercury ions in complex water samples.
