Chitosan-based carbon nanoparticles as a heavy metal indicator and for wastewater treatment

Wang, Panyong; Li, Li; Pang, Xinpei; Zhang, Yan; Zhang, Yang; Dong, Wen‐Fei; Yan, Rui

doi:10.1039/d1ra00692d

Cited by 17 publications

(4 citation statements)

References 53 publications

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“…High biocompatibility was also seen from polymer composites prepared using nanotube powder of Ti 2+ and PVA. Titanium oxide enhances the structural, physical, and chemical properties and the mechanical integrity of the fabricated composite materials [22]. Carbon nanomaterials that are blue-green and fluorescent and made from chitosan can be used as heavy metal indicators and treat wastewater.…”

Section: Properties Of Chitosan-based Carbon Nanomaterialsmentioning

confidence: 99%

Retracted: Advances in chitosan biopolymer composite materials: from bioengineering, wastewater treatment to agricultural applications

Chadha

Bhardwaj

Selvaraj

et al. 2022

Mater. Res. Express

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Chitosan has become the most known and second abundantly available recyclable, non-hazardous and eco-friendly biopolymer after cellulose with several advantageous biomedical, agriculture, and wastewater treatment applications. As nanotechnology has progressed, researchers have begun incorporating chitosan-based carbon compounds into various compounds, elements, and carbonaceous materials to increase their efficiency and biocompatibility. Chitosan carbon compounds have also been used directly in many applications due to their inherent chelating and antibacterial features and the presence of customizable functional groups. In this review, synthesis technologies and microstructure of chitosan composites and its carbon materials in biomedical, agriculture, and wastewater treatment concerning the administration of abiotic stress within plants, water accessibility for crops, scheming food bear pathogens, photothermal cancer rehabilitation, and heavy water pollutants absorption and removal methods are widely deliberated upon, with a relevant discussion of the techniques that can be used to put these into action. Chitosan is also utilized in miscellaneous applications, including the food sector and cosmetics. Overall, chitosan-based carbon compounds promise to extend agricultural practices while also addressing health concerns in an environmentally friendly manner.

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Section: Properties Of Chitosan-based Carbon Nanomaterialsmentioning

confidence: 99%

Retracted: Advances in chitosan biopolymer composite materials: from bioengineering, wastewater treatment to agricultural applications

Chadha

Bhardwaj

Selvaraj

et al. 2022

Mater. Res. Express

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“…The synthesis of CDs was similar to our reported method (Wang et al, 2021a). Typically, 0.5 g starch was dissolved in 30 ml ultrapure water, stirred and ultrasonic vibrated for 10 min, and then heated at 200 °C in a 100 ml stainless steel autoclave lined with polytetrafluoroethylene for 10 h. After the solution was cooled to room temperature, centrifuged at 10,000 rpm for 10 min to remove precipitate, filtered by a 0.22 μm filter membrane to further detach the aggregates and then dialyzed against pure water through a dialysis membrane (M w 1,000 Da) for 8 h. The product was lyophilized to obtain dark brown CDs and exhibited strong fluorescence under UV irradiation.…”

Section: Synthesis Of Cdsmentioning

confidence: 87%

Starch-Based Carbon Dots for Nitrite and Sulfite Detection

et al. 2021

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Nitrite and sulfite play important roles in human health and environmental science, so it is desired to develop a facile and efficient method to evaluate NO2- and SO32- concentrations. In this article, the use of green alternatives with the potential of multi-functionality has been synthesized to detect nitrite and sulfite based on fluorescent probe. The carbon dots (CDs) with starch as only raw materials show fluorescence turn “on-off-on” response towards NO2- and SO32- with the limits of detection of 0.425 and 0.243 μМ, respectively. Once nitrite was present in the solution, the fluorescence of CDs was quenched rapidly due to the charge transfer. When sulfite was introduced, the quenching fluorescence of CDs was effectively recovered because of the redox reaction between NO2- and SO32-, and thus providing a new way for NO2- and SO32- detection. Owing to their excellent analytical characteristics and low cytotoxicity, the “on-off-on” sensor was successfully employed for intracellular bioimaging of NO2- and SO32-.

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“…Importantly, CDs have been widely employed as uorescent sensors to assay various targets on the basis of their advanced uorescence. [14][15][16][17] Consequently, various methods have been proposed to synthesize carbon dots, [18][19][20] and diverse substances such as pure chemical compounds, biomass raw materials 21,22 and natural products have served as the carbon source. Among these strategies, the hydrothermal method and microwave treatment are most extensively applied owing to their facile operations and economical cost.…”

Section: Introductionmentioning

confidence: 99%

Orange-fluorescence carbon dots employed for the quantitative analysis of silver ions and glyphosine through the off–on mode

et al. 2022

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Chitosan-based carbon nanoparticles as a heavy metal indicator and for wastewater treatment

Abstract: Removal of heavy metal ions by carbon nanoparticles synthesized from chitosan.

Cited by 17 publications

References 53 publications

Retracted: Advances in chitosan biopolymer composite materials: from bioengineering, wastewater treatment to agricultural applications

Retracted: Advances in chitosan biopolymer composite materials: from bioengineering, wastewater treatment to agricultural applications

Starch-Based Carbon Dots for Nitrite and Sulfite Detection

Orange-fluorescence carbon dots employed for the quantitative analysis of silver ions and glyphosine through the off–on mode

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