Carbon dots derived from water hyacinth and their application as a sensor for pretilachlor

Abstract

Recently,carbon-based nanomaterials have been attracted much interest among the scientific community due to its extraordinary properties and applications. Mostly the fluorescent carbon nanomaterials are prepared from commercially available precursors. In this work, develop a new strategy for producing carbon nanoparticles (carbon dots) using phosphoric acid as an activating agent from water hyacinth present in Assam, India. These carbon nanoparticles show green fluorescence under UV light, and the sizes are found below 10 nm. These carbon dots are applied as a fluorescence sensor for detecting the herbicide (pretilachlor) . The developed PL sensor is exclusively selective and sensitive for detection of this herbicide, and the limit of detection is found to be 2.9 μM.This sensor is also tested for real samples like soil contaminated with pretilachlor.

A Review on Multifunctional Carbon-Dots Synthesized From Biomass Waste: Design/ Fabrication, Characterization and Applications

“…Additionally, pesticides that is widely found in water, soil, sewage sludge, sediment and aquatic biota increase the risk of different diseases such as mental confusion, eczema, reproductive toxicity, damage liver, kidney, neural and immune systems in human beings (Jayaraj et al, 2016). The detection of herbicide (pretilachlor) by C-Dots prepared from water hyacinth has also been reported (Deka et al, 2019). Wool-based microwaved assisted C-Dots sensor for detecting glyphosate based on the inner filter effect was also demonstrated .…”

Carbon quantum dots for the detection of antibiotics and pesticides

“…Most of the rapid detection of pesticides is achieved by monitoring their enzyme inhibition activity, however, a variety of pesticides can inhibit a particular enzyme leading to poor selectivity. However, with the recent development in 0-D nanomaterials, the interactions of pesticides with fluorescent CQDs have been reported to influence the fluorescence intensity depending upon the nature of interaction [51][52][53][54][55], which can be utilized as a transduction mechanism. Interaction of pesticides with CQDs leading to the perturbation of the recombination electronehole pair, different types of charge transfer, energy transfer, and IFE can lead to fluorescence change of CQDs.…”

“…Conversely, Deka et al reported the detection of pretilachlor by enhancement of fluorescence of CQDs obtained from water hyacinth [52]. The enhancement of the fluorescence upon the interaction of CQDs with pretilachlor is reported to be also due to the electron transfer mechanism.…”

Synthesis and characterization of novel protein nanodots as drug delivery carriers with an enhanced biological efficacy of melatonin in breast cancer cells

“…The absorbance at 275 nm is ascribed to the p-p* electronic transition of C]C and the n-p* electronic transition of C]O present on the PNDs surface. 56,57 The broad absorption extending between 330-350 nm is due to the presence of excited states of the functional groups on the surface. 58,59 One of the most remarkable characteristics of PNDs is their intrinsic photoluminescence property, which has an excitation-dependent uorescence spectrum with maximum uorescence intensity found when excited at 340 nm (Fig.…”