Microwave-assisted green synthesis of multi-functional carbon quantum dots as efficient fluorescence sensor for ultra-trace level monitoring of ammonia in environmental water

Autor: Sivarasan Ganesan, Rajendran Kalimuthu, Thamaraiselvi Kanagaraj, Ravichandran Kulandaivelu, Rajendiran Nagappan, Lingassamy Arul Pragasan, Vinoth Kumar Ponnusamy
Rok vydání: 2022
Předmět:
Zdroj: Environmental Research. 206:112589
ISSN: 0013-9351
DOI: 10.1016/j.envres.2021.112589
Popis: This study reports a facile green preparation of self-assembled multi-functional carbon quantum dots (CQDs) via direct pyrolysis technique coupled with microwave-assisted synthesis using Ziziphus Mauritiana stone biomass (as a bio-resource precursor). The synthesized multi-functional CQDs was characterized using FT-IR, XRD, XPS, TEM, and fluorescence spectroscopy techniques. The results exhibit that the prepared CQDs are spherical-shaped with an average diameter of 2-4 nm and showed bright bluish-green emissions property with stable dispersion and high photostability in the aqueous medium. Furthermore, the emission properties of CQDs were examined by quenched with ammonia (NH
Databáze: OpenAIRE
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