Investigating the effect of N-doping on carbon quantum dots structure, optical properties and metal ion screening
London South Bank University · National Institute of Materials Physics · +2 more institutions
Abstract
Carbon quantum dots (CQDs) derived from biomass, a suggested green approach for nanomaterial synthesis, often possess poor optical properties and have low photoluminescence quantum yield (PLQY). This study employed an environmentally friendly, cost-effective, continuous hydrothermal flow synthesis (CHFS) process to synthesise efficient nitrogen-doped carbon quantum dots (N-CQDs) from biomass precursors (glucose in the presence of ammonia). The concentrations of ammonia, as nitrogen dopant precursor, were varied to optimise the optical properties of CQDs. Optimised N-CQDs showed significant enhancement in fluorescence emission properties with a PLQY of 9.6% compared to pure glucose derived-CQDs (g-CQDs) without…
Citation impact
- FWCI
- 15.07
- Percentile
- 100%
- References
- 42
Authors
9- KGKiem G. NguyenCorresponding
London South Bank University
- IBIoan-Alexandru Bărăgău
London South Bank University, National Institute of Materials Physics
- RGRadka Gromicova
The Open University
- ANAdela Nicolaev
National Institute of Materials Physics
- SAStuart A. J. Thomson
Edinburgh Instruments (United Kingdom)
Topics & keywords
- Quantum yield
- Photoluminescence
- Materials science
- Dopant
- Doping
- Nanomaterials
- Fluorescence
- Quantum dot