A critical review on the environmental applications of carbon dots

Hebbar, Akshatha; Selvaraj, Raja; Vinayagam, Ramesh; Varadavenkatesan, Thivaharan; Kumar, P. Senthil; Duc, Pham Anh; Rangasamy, Gayathri

doi:10.1016/j.chemosphere.2022.137308

Cited by 38 publications

(10 citation statements)

References 120 publications

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“…Hebbar et al 164 from Manipal Acad Higher Educ in India outlined the enhancement of CD synthesis, characterization, application in pollutant detection and photocatalysis, and potential areas for improvement by adding natural carbon precursors or developing microreactor-based techniques.…”

Section: Synthesis Of Micro/nanomaterials By Microreactorsmentioning

confidence: 99%

Microreactor-based micro/nanomaterials: fabrication, advances, and outlook

et al. 2023

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Section: Synthesis Of Micro/nanomaterials By Microreactorsmentioning

confidence: 99%

Microreactor-based micro/nanomaterials: fabrication, advances, and outlook

et al. 2023

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“…Modification of the functionalization of CQDs can improve their luminescence and give them the ability to bind directly or indirectly to various substances. CQDs have been used in the detection of heavy metal ions [3], pesticides and antibiotics [4], photocatalytic decontamination [5] and other applications.…”

Section: Introductionmentioning

confidence: 99%

Advances in carbon quantum dot technology for food safety: preparation, modification, applications and mechanisms

Sun,

Cheng,

et al. 2024

Nano Ex.

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Functionalized carbon quantum dots (CQDs) show great potential for application in the field of food safety by combining their use with other technologies. CQDs are good candidates in this regard due to the wide range of sources of raw materials for their synthesis, and their good biocompatibility and stable fluorescence. This paper analyses the properties of CQDs and compares them with those of conventional semiconductor quantum dots. It analyses the similarities and differences between hydrothermal carbonization, pyrolysis and microwave-assisted synthesis of CQDs, and reviews the principles and methods of functionalization of CQDs through surface modification and doping. Finally, it discusses the applications of functionalized CQDs in food safety, such as detection and sensing, bio-inhibition and photocatalytic degradation, and the mechanisms of detection.

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“…If neglected, they have the potential to permanently damage the ecosystem by increasing the chemical oxygen demand (COD) and blocking sunlight from entering the water's depths, which negatively affects aquatic life. 5 ■ NEED FOR SUSTAINABLE DEVELOPMENT Given the finite amount of water resources and the everincreasing population that depends on them, water scarcity is a major environmental concern. Access to energy, a clean environment, and clean water are essential conditions for both human survival and economic advancement.…”

Section: ■ Introductionmentioning

confidence: 99%

“…Most of the dyes have one or more benzene rings, which are poisonous and resistant to degradation by microorganisms. If neglected, they have the potential to permanently damage the ecosystem by increasing the chemical oxygen demand (COD) and blocking sunlight from entering the water’s depths, which negatively affects aquatic life …”

Section: Introductionmentioning

confidence: 99%

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

Ikram,

Azmat,

Perviaz

2024

ACS Omega

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

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A critical review on the environmental applications of carbon dots

Cited by 38 publications

References 120 publications

Microreactor-based micro/nanomaterials: fabrication, advances, and outlook

Microreactor-based micro/nanomaterials: fabrication, advances, and outlook

Advances in carbon quantum dot technology for food safety: preparation, modification, applications and mechanisms

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

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