Carbon quantum dots directly generated from electrochemical oxidation of graphite electrodes in alkaline alcohols and the applications for specific ferric ion detection and cell imaging
2016/01/01 by Mengli Liu, Yuanhong Xu, Fushuang Niu +2 · 26 citations
Materials Science · Biochemistry, Genetics and Molecular Biology · #Carbon and Quantum Dots Applications #Quantum Dots Synthesis And Properties #Advanced biosensing and bioanalysis techniques
paper · doi:10.1039/c5an02231b
Abstract
Carbon quantum dots (CQDs) are attracting tremendous interest owing to their low toxicity, water dispersibility, biocompatibility, optical properties and wide applicability. Herein, CQDs with an average diameter of (4.0 ± 0.2) nm and high crystallinity were produced simply from the electrochemical oxidation of a graphite electrode in alkaline alcohols. The as-formed CQDs dispersion was colourless but the dispersion gradually changed to bright yellow when stored in ambient conditions. Based on UV-Vis absorption, fluorescence spectroscopy, X-ray photoelectron spectroscopy (XPS), Fourier transform infrared spectroscopy (FTIR) and high-resolution transmission electron microscopy (HRTEM), this colour change appeared to be due to oxygenation of surface species over time. Furthermore, the CQDs were used in specific and sensitive detection of ferric ion (Fe(3+)) with broad linear ranges of 10-200 μM with a low limit of detection of 1.8 μM (S/N = 3). The application of the CQDs for Fe(3+) detection in tap water was demonstrated and the possible mechanism was also discussed. Finally, based on their good characteristics of low cytotoxicity and excellent biocompatibility, the CQDs were successfully applied to cell imaging.
Cited by
- Opportunities for quantum dots in energy-relevant sensing applications: a survey
- High Quantum Yield Green-Emitting Carbon Dots for Fe(ІІІ) Detection, Biocompatible Fluorescent Ink and Cellular Imaging. [europepmc]
- Graphene quantum dots against human IAPP aggregation and toxicity in vivo. [europepmc]
- Biogreen Synthesis of Carbon Dots for Biotechnology and Nanomedicine Applications. [europepmc]
- Recent Progress of Carbon Dot Precursors and Photocatalysis Applications. [europepmc]
- Green Hydrothermal Synthesis of N-doped Carbon Dots from Biomass Highland Barley for the Detection of Hg 2 . [europepmc]
- Small molecules derived carbon dots: synthesis and applications in sensing, catalysis, imaging, and biomedicine. [europepmc]
- Functionalized Chitosan-Carbon Dots: A Fluorescent Probe for Detecting Trace Amount of Water in Organic Solvents. [europepmc]
- Non-Enzymatic Amperometric Glucose Sensor Based on Carbon Nanodots and Copper Oxide Nanocomposites Electrode. [europepmc]
- Fluorescent recognition of Fe 3+ in acidic environment by enhanced-quantum yield N-doped carbon dots: optimization of variables using central composite design. [europepmc]
- Green Synthesis of Full-Color Fluorescent Carbon Nanoparticles from Eucalyptus Twigs for Sensing the Synthetic Food Colorant and Bioimaging. [europepmc]
- A Review of Carbon Dots Produced from Biomass Wastes. [europepmc]
- High-performance resistive humidity sensor based on Ag nanoparticles decorated with graphene quantum dots. [europepmc]
- Carbon Dots: Classification, Properties, Synthesis, Characterization, and Applications in Health Care-An Updated Review (2018-2021). [europepmc]
- Carbon Dots: An Innovative Tool for Drug Delivery in Brain Tumors. [europepmc]
- Eco Friendly Synthesis of Carbon Dot by Hydrothermal Method for Metal Ions Salt Identification. [europepmc]
- Carbon and graphene quantum dots: a review on syntheses, characterization, biological and sensing applications for neurotransmitter determination. [europepmc]
- Synthesis of green fluorescent carbon dots from carbon nano-onions and graphene oxide. [europepmc]
- Selective and sensitive detection of cinnamaldehyde by nitrogen and sulphur co-doped carbon dots: a detailed systematic study. [europepmc]
- Multicolor Emitting Carbon Dot-Reinforced PVA Composites as Edible Food Packaging Films and Coatings with Antimicrobial and UV-Blocking Properties. [europepmc]
- Long-term effects of impurities on the particle size and optical emission of carbon dots. [europepmc]
- Natural Nitrogen-Doped Carbon Dots Obtained from Hydrothermal Carbonization of Chebulic Myrobalan and Their Sensing Ability toward Heavy Metal Ions. [europepmc]
- Structural Features of Carbon Dots and Their Agricultural Potential. [europepmc]
- Carbon Nanomaterial Fluorescent Probes and Their Biological Applications. [europepmc]
- Carbon dots as versatile nanomaterials in sensing and imaging: Efficiency and beyond. [europepmc]
- Green synthesis and multifaceted applications: challenges and innovations in carbon dot nanocomposites. [europepmc]
Related