Carbon-quantum dots derived from denatured milk for efficient chromium-ion sensing and supercapacitor applications

Athika, Mattath; Prasath, Arul; Duraisamy, Ezhumalai; Devi, Vaithiyanathan Sankar; Sharma, Arumugam Selva; Elumalai, Perumal

doi:10.1016/j.matlet.2019.01.064

Cited by 80 publications

(33 citation statements)

References 11 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The detailed preparation and characterizations of the CQDs have been reported in our recent works. , Briefly, 25 mL of denatured waste milk was added to 20 mL of distilled water in a beaker. The resulting solution was transferred to a 50 mL Teflon-lined autoclave and heated at 160 °C for 2 h to yield CQD dispersions.…”

Section: Methodsmentioning

confidence: 99%

Carbon Quantum Dot-Anchored Bismuth Oxide Composites as Potential Electrode for Lithium-Ion Battery and Supercapacitor Applications

et al. 2019

Self Cite

View full text Add to dashboard Cite

The present investigation elucidates a simple hydrothermal method for preparing nanostructured bismuth oxide (Bi 2 O 3 ) and carbon quantum dot (CQD) composite using spoiled (denatured) milk-derived CQDs. The formation of the CQD–Bi 2 O 3 composite was confirmed by UV–vis absorption, steady-state emission, and time-resolved fluorescence spectroscopy studies. The crystal structure and chemical composition of the composite were examined by X-ray diffraction, Fourier transform infrared spectroscopy, Raman spectroscopy, and thermogravimetric analysis. The surface morphology and the particle size distribution of the CQD–Bi 2 O 3 were examined using field emission scanning electron microscope and high-resolution transmission electron microscope observations. As an anode material in lithium-ion battery, the CQD–Bi 2 O 3 composite exhibited good electrochemical activity and delivered a discharge capacity as high as 1500 mA h g –1 at 0.2C rate. The supercapacitor properties of the CQD–Bi 2 O 3 composite electrode revealed good reversibility and a high specific capacity of 343 C g –1 at 0.5 A g –1 in 3 M KOH. The asymmetric device constructed using the CQD–Bi 2 O 3 and reduced graphene oxide delivered a maximum energy density of 88 Wh kg –1 at a power density of 2799 W kg –1 , while the power density reached a highest value of 8400 W kg –1 at the energy density of 32 Wh kg –1 . The practical viability of the fabricated device is demonstrated by glowing light-emitting diodes. It is inferred that the presence of conductive carbon network has significantly increased the conductivity of the oxide matrix, thereby reducing the interfacial resistance that resulted in excellent electrochemical performances.

show abstract

Section: Methodsmentioning

confidence: 99%

Carbon Quantum Dot-Anchored Bismuth Oxide Composites as Potential Electrode for Lithium-Ion Battery and Supercapacitor Applications

et al. 2019

Self Cite

View full text Add to dashboard Cite

show abstract

“…12 There is a growing interest in the hydrothermal synthesis of CDs from different biomass as a carbon source. Ginkgo leaves, 11 Ocimum sanctum, 13 Prunus mume, 14 sweet potato, 15,16 sugarcane bagasse, 17 durian shell waste, 18 radish, 19,20 date kernel, 21 mustard seeds, 22 aloe vera, 23 onion waste, 24 starch, 25 milk, 26,27 coffee bean shell, 28 black tea, 29 yogurt, 30 finger millet ragi, 31 Plectranthus amboinicus, 32 Borassus flabellifer, 33 and carob 34 are some used recent examples of carbon sources to synthesis CDs.…”

Section: Introductionmentioning

confidence: 99%

Green synthesis of water-soluble fluorescent carbon dots from rosemary leaves: Applications in food storage capacity, fingerprint detection, and antibacterial activity

Eskalen

Çeşme

Kerli

et al. 2020

Journal of Chemical Research

View full text Add to dashboard Cite

Blue fluorescent carbon dots are synthesized via a one-step hydrothermal method using rosemary leaves as a carbon source. The obtained carbon dots are characterized by X-ray diffraction, transmission electron microscopy, X-ray photoelectron spectroscopy, UV-Vis, FTIR, and fluorescence spectrometry. The results show that carbon dots gave a maximum emission peak at 422 nm when excited at 332 nm. The average particle diameter of the synthesized spherical carbon dots is found to be 16.13 nm with a 4.6-nm standard deviation. The diameters of the produced carbon dots vary, as is evident from standard deviation heights, resulting in multicolor emission spectra. The fruit storage experiment is carried out by investigating the qualitative antioxidant ability of the produced carbon dots. The results obtained for polyvinyl alcohol–carbon dot–coated samples differ remarkably compared to polyvinyl alcohol–coated samples only. The polyvinyl alcohol–carbon dot composition is used in latent fingerprint detection applications. In analyses made on a glass surface, fingerprints cannot be monitored on the glass surface with the polyvinyl alcohol layer under ultraviolet light, while they are observed on the surface covered with the polyvinyl alcohol–carbon dot composition. Moreover, biological activity against Gram-positive, Gram-negative, and yeast strains are investigated.

show abstract

“…( Feng et al., 2019 ), and Mattath Athika et al. ( Athika et al., 2019 ) (CDs prepared using denatured milk) explored mechanistic understanding using different optical characterizations. A good absorbance and FL emission spectral overlap, change in the zeta potential, and no change in CDs' lifetime was observed, which confirms the presence of a combination of IFE and static quenching.…”

Section: Carbon Dots For Heavy Metal Ion Detectionmentioning

confidence: 99%

Heavy metal ion detection using green precursor derived carbon dots

Torres¹,

Bogireddy

Kaur

et al. 2022

iScience

View full text Add to dashboard Cite

Carbon-quantum dots derived from denatured milk for efficient chromium-ion sensing and supercapacitor applications

Cited by 80 publications

References 11 publications

Carbon Quantum Dot-Anchored Bismuth Oxide Composites as Potential Electrode for Lithium-Ion Battery and Supercapacitor Applications

Carbon Quantum Dot-Anchored Bismuth Oxide Composites as Potential Electrode for Lithium-Ion Battery and Supercapacitor Applications

Green synthesis of water-soluble fluorescent carbon dots from rosemary leaves: Applications in food storage capacity, fingerprint detection, and antibacterial activity

Heavy metal ion detection using green precursor derived carbon dots

Contact Info

Product

Resources

About