Highly selective and sensitive detection of 2,4,6-trinitrophenol by using newly developed blue-green photoluminescent carbon nanodots.
Talanta
; 161: 875-880, 2016 Dec 01.
Article
in En
| MEDLINE
| ID: mdl-27769497
ABSTRACT
Though many methods of detecting 2,4,6-trinitrophenol (TNP) mainly have been developed recent years, quantification of TNP in environmental matrixes still faces up to great challenges because all the nitroaromatic explosives reveal highly similar chemical structure. In the present work, we have developed a selective and sensitive method for detection of TNP by amorphous photoluminescent carbon nanodots (CNDs), which are prepared through a simple hydrothermal route using spermine and m-phenylenediamine (MPD) as precursors. The as-prepared CNDs are found to show blue-green photoluminescence, excitation-wavelength independence, and excellent chemical and optical stability. Owing to the strong characteristic absorption of TNP at 356nm (ε=1.048×104cm-1M-1), which has a good spectral overlap with the excitation band of CNDs, the fluorescence intensity of CNDs at 490nm is linearly quenched with the adding concentration of TNP in the range of 0.1-100µM. The developing assay based on inner filter effect (IFE) mechanism for the detection of TNP is selective and convenient, showing that the as-prepared CNDs have applicable prospect in the concept of simplicity and specificity in analytical chemistry.
Key words
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Picrates
/
Water Pollutants, Chemical
/
Carbon
/
Nanostructures
Type of study:
Diagnostic_studies
Language:
En
Journal:
Talanta
Year:
2016
Document type:
Article
Affiliation country:
China