Assessment of biomass-derived carbon dots as highly sensitive and selective templates for the sensing of hazardous ions

Abstract

Access to safe drinking water and a hygienic living environment are the basic necessities that encourages healthy living. However, the presence of various pollutants especially heavy toxic metal ions in...

Recent Progress in the Application of Palladium Nanoparticles: A Review

“…An example of this is their ability to hybridize into sp, sp 2 , and sp 3 configurations based on the bonding relationships with neighboring atoms, and the narrow gap between the 2s and 2p electron shells, effectively facilitating the fabrication of a wide variety of carbon materials [117,118]. In particular, as electrode materials in sensors, carbonaceous nanomaterials demonstrate several unique properties for sensing and detection of a variety of analytes [119], such as the possibility of depositing electrocatalytic groups on the surface of these materials, the presence of edge-plane-like sites located at the ends and in defect areas of nanostructures, high surface area, efficient electronic properties, and unique 2D structures, such as in graphene and carbon nitride, etc. [120].…”

Biocompatible Mn(II)-Enhanced N–S-Codoped Carbon Dots: A Versatile Fluorescence Sensor for Sensitive Hg2+ Detection in Coastal Seawater and Living Cells

“…Due to the strong affinity of heteroatomic groups on CDs surfaces toward metal ions, these CDs typically exhibit responsiveness toward a range of metal ions including Cu 2+ , Fe 2+ , Fe 3+ , Hg 2+ , and Pb 2+ . − However, the application of heteroatom-doped CDs in Hg 2+ detection encounters certain challenges. The luminescence of heteroatoms doped CDs is susceptible to interference from other transition metal ions due to the presence of abundant functional groups such as −NH 2 , −COOH, −OH, and −SH, resulting in suboptimal performance in detection systems comprising multiple metal ions (e.g., coastal seawater) . Especially, coastal waters present a highly complex matrix characterized by diverse chemical species and interfering substances that can impede the accurate determination of Hg 2+ ions concentrations. , Therefore, the development of a novel class of CDs that is specifically designed for the detection of Hg 2+ in coastal seawater holds immense significance in safeguarding both marine ecosystems and human well-being.…”

Carbon nanodots from orange peel waste as fluorescent probes for detecting nitrobenzene

“…19 Hence, CDs derived from biomass exhibit remarkable water solubility attributed to their inherent functionality. 20 They also exhibit strong uorescence without the need for additional surface treatment and display variable quantum yields, typically falling within the range of 2% to 6%, and in some instances, reaching up to 20%. 21 We have recently directed our research focus towards the electrochemical (EC) valorization of high-value molecules that remain within biomass.…”