Green synthesis of graphene quantum dots from Opuntia sp. extract and their application in phytic acid detection

Phytic acid and phytate anions are among the principal reserves of phosphorus. A few methods have been used for their detection, but these methods require harsh conditions. In this work, graphene quantum dots are successfully synthesized by Opuntia sp. extract through a pyrolysis microwave treatment...

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Published inSensing and Bio-Sensing Research Vol. 32; p. 100412
Main Authors Centeno, Lizeth, Romero-García, Jorge, Alvarado-Canché, Carmen, Gallardo-Vega, Carlos, Télles-Padilla, G., Díaz Barriga-Castro, Enrique, Cabrera-Álvarez, Edgar N., Ledezma-Pérez, Antonio, de León, Arxel
Format Journal Article
LanguageEnglish
Published Elsevier B.V 01.06.2021
Elsevier
Subjects
Graphene quantum dots
Optical sensors
Phytic acid
Optical sensors
Phytic acid
Graphene quantum dots
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Summary:Phytic acid and phytate anions are among the principal reserves of phosphorus. A few methods have been used for their detection, but these methods require harsh conditions. In this work, graphene quantum dots are successfully synthesized by Opuntia sp. extract through a pyrolysis microwave treatment. This green synthesis method allows us to controllably obtain nanostructures with excellent dispersion and a narrow size distribution to use for detecting phosphates and phytic acid and amplifying fluorescence quenching at pH = 8.8. Their application allows for a one-step turn-off system. The quenching percentage for phytic acid (PA) detection is 53%, and the quenching percentages are 26 and 21% for sodium phosphate monobasic (SPMB) and sodium phosphate dibasic (SPDB), respectively. The Stern-Volmer analysis shows that static and dynamic quenching mechanics contribute to phytic acid quenching. [Display omitted]
ISSN:2214-1804
2214-1804
DOI:10.1016/j.sbsr.2021.100412