Synthesis of CdS1-XSeX quantum dots in a protozoa Tetrahymena pyriformis.
Appl Microbiol Biotechnol
; 103(2): 973-980, 2019 Jan.
Article
em En
| MEDLINE
| ID: mdl-30417309
ABSTRACT
Quantum dots (QDs) are recognized as the excellent fluorescence and photochemical materials to be applied in bioimaging, biomedical, and solar cell fields. Biosynthesized QDs (bio-QDs) have attracted attention due to their simple, eco-friendly, and excellent biocompatible traits. Moreover, bio-QDs could not be replaced by chemically fabricated QDs in many fields. Bio-QDs synthesized by different microorganisms have diverse characteristics. In this work, the biosynthesis of QDs by Tetrahymena pyriformis, a typical protozoa in aquatic environments, was achieved for the first time. The synthesized materials by T. pyriformis emitted yellow fluorescence and had an average diameter of 8.27 ± 0.77 nm. Spectral characterization results demonstrated that the synthesized QDs were CdS1-XSeX. Meanwhile, the fluorescence intensities of the synthesized bio-QDs showed a linear relationship with Cd2+ dosage ranging from 20 to 80 µM. The fluorescence enhancement of the synthesized QDs was highly selective to Cd2+ compared to other metal ions. The bio-QDs were demonstrated to have a great potential to be applied for Cd2+ detection. This work provides valuable information about the transformation of heavy metal ions in protozoan and is useful to accelerate the applications of the synthesized QDs.
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Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Tetrahymena pyriformis
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Cádmio
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Pontos Quânticos
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Redes e Vias Metabólicas
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Engenharia Metabólica
Idioma:
En
Revista:
Appl Microbiol Biotechnol
Ano de publicação:
2019
Tipo de documento:
Article
País de afiliação:
China