Single-step synthesis of polychromatic carbon quantum dots for macroscopic detection of Hg2.
Ecotoxicol Environ Saf
; 190: 110141, 2020 Mar 01.
Article
em En
| MEDLINE
| ID: mdl-31901812
ABSTRACT
Two kinds of carbon quantum dots (CQDs), having luminous peaks at 480 and 525 nm, were obtained by a single-step hydrothermal method. The detection of Hg2+ by two kinds of carbon dots was further explored. In order to compensate for the weak luminescence of blue carbon dots (480 nm) and low sensitivity of green carbon dots (525 nm), mixed carbon dots were examined for Hg2+ detection. The mixed carbon dots showed a better detection of Hg2+ ions. Low detection limit of 0.05 µM was found to be in the range of 0-1.0 µM of Hg2+. Moreover, in this range, the change of fluorescence intensity can be clearly seen under the ultraviolet lamp, which will be conducive for the practical application of detecting mercury ions with carbon dots.
Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Pontos Quânticos
/
Mercúrio
Tipo de estudo:
Diagnostic_studies
Idioma:
En
Revista:
Ecotoxicol Environ Saf
Ano de publicação:
2020
Tipo de documento:
Article
País de afiliação:
China