Green synthesis of carbon dots derived from biomass of Polyalthia bullata root extract as colorimetric sensor for selective detection of Fe3+ ions

Inorganic Chemistry Communications, Год журнала: 2025, Номер 174, С. 113944 - 113944

Опубликована: Янв. 11, 2025

Язык: Английский

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Degradation Efficiency of Organic Dyes on CQDs As Photocatalysts: A Review

ACS Omega, Год журнала: 2024, Номер 9(9), С. 10017 - 10029

Опубликована: Фев. 26, 2024

Across the globe, task of providing clean and safe drinking water is getting harder. Organic contaminants, including dyes pharmaceutical medications, are a significant environmental threat, especially in aquatic bodies due to their uncontrolled emission. Therefore, method for degradation that both environmentally friendly commercially feasible must be developed. In realm photocatalysis, carbon-based nanomaterials have drawn more attention last ten years. Due exceptional distinct qualities, metal-free photocatalytic systems received lot recently ability degrade organic contaminants into semiconductor quantum dots, which already available. A class with particle size between 2 10 nm showing optoelectrical characteristics among variety catalytic dots. This review covers several synthesis techniques such as electrochemical, laser ablation, microwave radiation, hydrothermal, optical features CQDs photoluminescent (PL) property confinement effect. The uses various well difficulties still exist opportunities lie ahead also been explored.

Язык: Английский

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Recent development in fluorescent carbon quantum dots-based photocatalysts for water and energy applications

Materials Science in Semiconductor Processing, Год журнала: 2024, Номер 181, С. 108661 - 108661

Опубликована: Июль 1, 2024

Photocatalysis plays a vital role in addressing environmental remediation and energy generation. Carbon quantum dots (CQDs) represent superior category of photocatalysts devoid metals, boasting remarkable electron transfer capabilities, up-conversion photoluminescence, non-toxic properties. Notably, CQDs can function independently as or become part composite photocatalytic materials. This article explores the precursor materials used CQD production various methods for preparing enhanced with CQDs, such hydrothermal, solvothermal, microwave, chemical oxidation, etc. Furthermore, we provide an extensive overview recent advancements pristine, doped, CQD-based photocatalysts, encompassing applications like organic pollutant degradation water, hydrogen production, CO2 photoreduction fuel The effect surface computational modelling was also addressed. Finally, addressed challenges potential research avenues CQD-enhanced photocatalysts.

Язык: Английский

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Biogenic synthesis of Allium cepa derived magnetic carbon dots for enhanced photocatalytic degradation of methylene blue and rhodamine B dyes

Biomass Conversion and Biorefinery, Год журнала: 2023, Номер unknown

Опубликована: Ноя. 9, 2023

Язык: Английский

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An overview on animal/human biomass-derived carbon dots for optical sensing and bioimaging applications

RSC Advances, Год журнала: 2023, Номер 13(50), С. 35088 - 35126

Опубликована: Янв. 1, 2023

Animal/human-derived biomass has shown a significant potential for the sustainable/green synthesis of luminescent carbon dots with wide applicability in fields sensing, bioimaging and many more.

Язык: Английский

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Efficiency of magnetite decorated with carbon quantum dot nanocomposites for the adsorptive removal of methylene blue from wastewater: Kinetic and modeling studies

Journal of Molecular Liquids, Год журнала: 2025, Номер unknown, С. 127128 - 127128

Опубликована: Фев. 1, 2025

Язык: Английский

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Novel In Situ Fabrication of Fe-Doped Zinc Oxide/Tin Sulfide Heterostructures for Visible-Light-Driven Photocatalytic Degradation of Methylene Blue

Journal of Chemistry, Год журнала: 2023, Номер 2023, С. 1 - 13

Опубликована: Май 23, 2023

Using a hydrothermal synthesis process, Fe-doped ZnO/SnS nanostructures were created and variety of analytical methods used to describe their characteristics. X-ray diffraction patterns employed confirm the hexagonal orthorhombic crystal structures ZnO SnS, respectively. Nanorods nanoparticle clouds visible in TEM pictures, XPS investigation verified that dopant Fe ions 3+ oxidation state. Additionally, absorption spectroscopy revealed decrease energy bandgap with an increase content, photoluminescence analysis demonstrated ZSF3 sample significantly reduced rate recombination charge carriers. Impressively, optimized (ZSF3) displayed 95.8% more photocatalytic activity during 120 min degradation MB dye. This study easy procedure, carried out at 220°C for 12 hours, may be create iron-doped nanocomposites. The tunable characteristics heterogeneous semiconducting materials effective carrier separation thought causes increased activity. Furthermore, heterostructure carriers was proposed facilitate when exposed light.

Язык: Английский

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Green-synthesized chitosan‑carbon dot nanocomposite as turn-on aptasensor for detection and quantification of Leishmania infantum parasite

International Journal of Biological Macromolecules, Год журнала: 2024, Номер 270, С. 132483 - 132483

Опубликована: Май 17, 2024

Leishmania is one of the most common diseases between human and animals, caused by infantum parasite. Here, we have developed an ultra-selective turn-on fluorescent probe based on aptamer Chitosan-CD nanocomposite. The CD used in this study were synthesized using Quercus cap extract a microwave-assisted approach. nanocomposite was optimized several microscopic spectroscopic techniques to possess bright fluorescence emission before adding totally quenched after addition aptamer. designed proficient detection quantification parasite selective targeting poly(A) binding protein (PABP) surface biosensor with high sensitivity, excellent selectivity, limit (LOD) 94 cells/mL as well linear response ranges 188-750 3000-6000 (R

Язык: Английский

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Methylene blue removal using nano-TiO2/MWCNT/Chitosan hydrogel composite beads in aqueous medium

Chemosphere, Год журнала: 2024, Номер 365, С. 143244 - 143244

Опубликована: Сен. 7, 2024

Язык: Английский

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Facile in-situ synthesis of solid mediator based CdS-rGO-WO3 Z-scheme photocatalytic system for efficient photocatalytic hydrogen generation

Optical Materials, Год журнала: 2023, Номер 147, С. 114670 - 114670

Опубликована: Дек. 7, 2023

Язык: Английский

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