Eco-friendly synthesis of cuprizone-functionalized luminescent carbon dots and application as a sensor for the determination of copper(<scp>ii</scp>) in wastewater

Moreira, Vinícius Azevedo; Suarez, Willian Toito; Franco, Mathews de Oliveira Krambeck; Neto, Francisco Fernandes Gambarra

doi:10.1039/c8ay00928g

Cited by 12 publications

(4 citation statements)

References 53 publications

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“…has also been employed as a carbon source for the synthesis of herbal CDs via the solvothermal method. 50 , 51 The use of organic solvents facilitated the carbonization process during the synthesis of CDs, which significantly altered the photophysical characteristics of the carbon nanoparticles. In another study, environmentally friendly CDs of the Codonopsis pilosula were prepared at room temperature using a one-step solvothermal method.…”

Section: Synthesis Strategy Of Hm-cdsmentioning

confidence: 99%

Potential Efficacy of Herbal Medicine-Derived Carbon Dots in the Treatment of Diseases: From Mechanism to Clinic

Zeng,

Wang,

Liu

et al. 2023

IJN

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Carbon dots (CDs), a crucial component of nanomaterials, are zero-dimensional nanomaterials with carbon as the backbone structure and smaller than 10 nm. Due to their beneficial characteristics, they are widely used in biomedical fields such as biosensors, drug delivery, bio-imaging, and interactions with DNA. Interestingly, a novel type of carbon dot, generated by using herbal medicines as synthetic raw materials, has emerged as the most recent incomer in the family of CDs with the extensive growth in the number of materials selected for carbon dots synthesis. Herbal medicine-derived carbon dots (HM-CDs) have been employed in the biomedical industry, and are rapidly emerging as “modern nanomaterials” due to their unique structures and exceptional capabilities. Emerging trends suggest that their specific properties can be used in bleeding disorders, gastrointestinal disorders, inflammation-related diseases, and other common intractable diseases including cancer, menopausal syndrome, central nervous system disorders, and pain of various forms and causes. In addition, HM-CDs have been found to have organ-protective and antioxidant properties, as evidenced by extensive studies. This research provides a more comprehensive understanding of the biomedical applications of HM-CDs for the aforementioned disorders and investigates the intrinsic pharmacological activities and mechanisms of these HM-CDs to further advance their clinical applications.

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Section: Synthesis Strategy Of Hm-cdsmentioning

confidence: 99%

Potential Efficacy of Herbal Medicine-Derived Carbon Dots in the Treatment of Diseases: From Mechanism to Clinic

Zeng,

Wang,

Liu

et al. 2023

IJN

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“…Over the past few decades, there has been sustained research activity on carbon quantum dots (CQDs) with a size up to 10 nm [15,16] due to stable and sensitively fluorescent properties [17]. A number of various types of CQDs are still getting bigger over time, but the synthesis stage is common for all [18]. The synthesis of CQDs is carried out in three separate routes: carbonization, passivation, and surface functionalization.…”

Section: Introductionmentioning

confidence: 99%

Water-Soluble Carbon Quantum Dots Modified by Amino Groups for Polarization Fluorescence Detection of Copper (II) Ion in Aqueous Media

et al. 2020

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Industrialization is serious for changing the environment and natural water composition, especially near cities and manufacturing areas. Logically, the new ultrasensitive technology for precise control of the quality and quantity of water sources is needed. Herein, an innovative method of polarization fluorescence analysis (FPA) was developed to measure the concentration of heavy metals in water. The approach was successfully applied for precise tests with reduced analysis time and increased measurement efficiency among laboratory methods. Based on this work, the investigations established the new type of carbon quantum dots (CQDs) with controllable fluorescence properties and functionalized amino—groups, which is appropriate for FPA. The parameters of one and two-step microwave synthesis routes are adjusted wavelength and fluorescence intensity of CQDs. Finally, under optimized conditions, the FPA is showed the detection of copper (2+) cations in water samples below European Union standard (2 mg/L). Moreover, in comparison with fluorescence quenching, polarization fluorescence is proved as a convenient, simple, and rapid test method for effective water safety analysis.

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“…Após resfriamento em temperatura ambiente, a solução obtida foi filtrada em papel de filtro Qualy com poros de 14 µm (Prolab, Brasil), e em seguida, filtrada em filtro micróporo de polietersulfona (PES) de tamanho 0,22 µm com auxílio de uma seringa, resultando na solução desejada de carbon dots (DU et al, 2014;MOREIRA et al, 2018;RODRIGUES et al, 2015;XU-CHENG et al, 2018).…”

Section: Obtenção Dos Carbons Dots a Partir Do Bagaço De Malte Secounclassified

“…A abundância e a diversidade de fontes de carbono na natureza e de estratégias de síntese, criam um grande leque de possibilidades para os carbon dots atenderem demandas e necessidades específicas. Mais especificamente, fontes de carbono como bagaço de cana-de-açúcar (MOREIRA et al, 2018), bio-óleo carbon dots fotoluminescentes a partir do bagaço de malte do processo de produção de cerveja para aplicação em experimentos de imagens em tempo real de células.…”

Section: Introductionunclassified

Nanopartículas de carbono provenientes de bagaço de malte para determinação fluorescente de clorpirifós

Carvalho¹

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O clorpirifós é um inseticida organofosforado usado no tratamento foliar de diversas culturas e cultivos. A presença de agroquímicos em águas industriais e efluentes têm sido um problema ambiental. Tal contaminação representa um risco a população humana e a sobrevivência de animais. Assim, o presente trabalho consistiu no estudo do bagaço de malte, um resíduo de baixo valor agregado da indústria cervejeira e a partir de uma abordagem Bottom-Up por processo hidrotérmico em 180 °C e 6 horas, como fonte carbono para desenvolvimento de carbon dots na detecção e quantificação do agroquímico clorpirifós em efluentes aquáticos. O material sintetizado foi caracterizado por espectroscopia no infravermelho por transformada de Fourier (FTIR), espalhamento dinâmico de luz (DLS em inglês), determinação do ponto de carga zero (PCZ), potencial zeta, análise termogravimétrica e obtenção dos espectros UV-Vis e de fluorescência. Os comprimentos de onda de excitação e emissão foram de 460 e 530 nm, respectivamente. O método obteve uma recuperação média de 98,2% e limites de detecção e quantificação de respectivamente 5,59×10 -9 mol L -1 e 1,69×10 -8 mol L -1 , em uma faixa linear de 1,14×10 -5 até 5,70×10 -5 mol L -1 . O rendimento quântico obtido foi de 1,2%. Portanto, o método desenvolvido pode ser considerado simples, fácil e uma alternativa acessível a outros métodos mais caros de determinação de clorpirifós em efluentes aquáticos. Palavras-Chave: Carbon dots. Bagaço de malte. Resíduo. Clorpirifós. Águas naturais.

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Eco-friendly synthesis of cuprizone-functionalized luminescent carbon dots and application as a sensor for the determination of copper(ii) in wastewater

Abstract: A novel and eco-friendly procedure for synthesizing fluorescent carbon dots (CDs) functionalized with cuprizone and their application for the selective determination of Cu2+ are presented in this work.

Cited by 12 publications

References 53 publications

Potential Efficacy of Herbal Medicine-Derived Carbon Dots in the Treatment of Diseases: From Mechanism to Clinic

Potential Efficacy of Herbal Medicine-Derived Carbon Dots in the Treatment of Diseases: From Mechanism to Clinic

Water-Soluble Carbon Quantum Dots Modified by Amino Groups for Polarization Fluorescence Detection of Copper (II) Ion in Aqueous Media

Nanopartículas de carbono provenientes de bagaço de malte para determinação fluorescente de clorpirifós

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