Journal ArticleDOI
Immobilization of Heteroatom-Doped Carbon Dots onto Nonpolar Plastics for Antifogging, Antioxidant, and Food Monitoring Applications
TLDR
In this paper, a single-step hydrothermal strategy was used to synthesize heteroatom-doped fluorescent carbon quantum dots (C-dots), which could serve as an antioxidant.Abstract:
This work presents the facile synthesis of heteroatom-doped fluorescent carbon quantum dots (C-dots), which could serve as an antioxidant. Herein, nitrogen, phosphorous, and sulfur codoped carbon dots (NPSC-dots) have been synthesized by a single-step hydrothermal strategy. Owing to the radical scavenging activity of the NPSC-dots, they were tested against several methods as well as in practical applications. The antioxidant ability of the NPSC-dots was efficiently utilized on plastic films by coating with these NPSC-dots. For the very first time, NPSC-dots were immobilized onto nonpolar plastic films (polypropylene) via photochemical covalent grafting to extend the shelf life of food items or storage without affecting the quality of plastic films. The NPSC-dot-coated PP film with negligible deterioration of transparency was extensively studied using scanning electron microscopy (SEM), atomic force microscopy (AFM), Fourier transform infrared (FTIR) analysis, X-ray photoelectron spectroscopy (XPS), contact angle measurement, and thermogravimetric analysis (TGA). The fluorescent character, antioxidant ability, and durability under different solvent systems of the coated film were examined. Also, the coated films were extensively and rigorously evaluated against simulated drastic environmental conditions to ensure the durability and antifogging application.read more
Citations
More filters
Journal ArticleDOI
Carbon-Dots-Initiated Photopolymerization: An In Situ Synthetic Approach for MXene/Poly(norepinephrine)/Copper Hybrid and its Application for Mitigating Water Pollution.
TL;DR: In this paper, a facile and green synthesis of carbon quantum dots (C-dots) from dill leaves by a single-step hydrothermal method was presented, which could serve as initiators for polymerization.
Journal ArticleDOI
Tailor made magnetic nanolights: fabrication to cancer theranostics applications
TL;DR: In this paper, the authors present recent progress of magneto-fluorescent nanoparticles (quantum dots based magnetic nanoparticles, Janus particles, and heterocrystalline fluorescent magnetic materials), comprehensively describing fabrication strategies, types, and biomedical applications.
Journal ArticleDOI
Carboxymethyl cellulose-based functional film integrated with chitosan-based carbon quantum dots for active food packaging applications
TL;DR: In this paper , a chitosan-based carbon quantum dots (CQDs) with multifunctional properties were synthesized using a hydrothermal process and the CQDs were evenly dispersed in the polymer matrix to form a highly transparent UV-blocking film.
Journal ArticleDOI
Acoustic Green Synthesis of Graphene-Gallium Nanoparticles and PEDOT:PSS Hybrid Coating for Textile To Mitigate Electromagnetic Radiation Pollution
References
More filters
Journal ArticleDOI
Use of a Free Radical Method to Evaluate Antioxidant Activity
TL;DR: The antiradical properties of various antioxidants were determined using the free radical 2,2-Diphenyl-1-picrylhydrazyl (DPPH*) in its radical form as discussed by the authors.
Journal ArticleDOI
Free Radicals in the Physiological Control of Cell Function
TL;DR: There is growing evidence that aging involves, in addition, progressive changes in free radical-mediated regulatory processes that result in altered gene expression.
Journal ArticleDOI
Luminescent Carbon Nanodots: Emergent Nanolights
Sheila N. Baker,Gary A. Baker +1 more
TL;DR: This Review summarize recent advances in the synthesis and characterization of C-dots and speculate on their future and discuss potential developments for their use in energy conversion/storage, bioimaging, drug delivery, sensors, diagnostics, and composites.
Journal ArticleDOI
Electro-Fenton process and related electrochemical technologies based on Fenton's reaction chemistry
TL;DR: Electro-Fenton (EF) Process 6585 4.2.1.
Journal ArticleDOI
Carbon-Based Dots Co-doped with Nitrogen and Sulfur for High Quantum Yield and Excitation-Independent Emission†
Yongqiang Dong,Hongchang Pang,Hongbin Yang,Chunxian Guo,Jingwei Shao,Yuwu Chi,Chang Ming Li,Chang Ming Li,Ting Yu +8 more
TL;DR: A new type and high density of surface state of GQDs arises, leading to high yields (more than 70 %) and excitation-independent emission and FLQY = fluorescence quantum yield.