Chemometrics investigation of the light-free degradation of methyl green and malachite green by starch-coated CdSe quantum dots

Hemmateenejad, Bahram; Shadabipour, Parisa; Khosousi, Tahereh; Shamsipur, Mojtaba

doi:10.1016/j.jiec.2015.01.018

Cited by 25 publications

(5 citation statements)

References 61 publications

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“…Compared to the “top-down” method, the “bottom-up” approach is more attractive for harvesting CDs from a variety of molecular precursors through chemical synthesis or carbonization. Methods include chemical or thermal oxidation of suitable chemical precursors, ultrasonic treatment of alkaline oracidic aqueous solutions of glucose and microwave pyrolysis of carbohydrates 19 20 21 22 23 .…”

mentioning

confidence: 99%

A facile ultrasonic-assisted fabrication of nitrogen-doped carbon dots/BiOBr up-conversion nanocomposites for visible light photocatalytic enhancements

Zhang

Park

Kim

et al. 2017

Sci Rep

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A highly efficient novel photocatalyst consisting of nitrogen-carbon dots (N-CDs) and three-dimensional (3D) hierarchical BiOBr was synthesized via a simple ultrasonic-assisted method and used for the degradation of hazardous dyes. Deposition of N-CDs onto the surface of BiOBr was confirmed through structure and composition characterizations. The N-CDs/BiOBr composites exhibited superior activity for organic contaminant degradation under visible light and the 1 wt% N-CDs/BiOBr composite showed the highest degradation rate, indicating that N-CDs/BiOBr composites have great potential for application in mitigating hazardous contaminants. The N-CDs played an important role in improving the photocatalytic performance, owing to the enhancement of up-converted photoluminescence behavior as well as the efficient separation of photogenerated charge carriers originating from the intimately contacted interface. A possible photocatalytic mechanism was proposed based on the experimental results.

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mentioning

confidence: 99%

A facile ultrasonic-assisted fabrication of nitrogen-doped carbon dots/BiOBr up-conversion nanocomposites for visible light photocatalytic enhancements

Zhang

Park

Kim

et al. 2017

Sci Rep

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“…The CdSe QDs follows first order kinetics while degrading the coloured compounds such as basic violet 16, Basic Blue 41 and Acid Blue 92.The starch doped CdSe QDs photodecolourize 80 % of malachite green and methylene green within three minutes in the ratio of 1:1000 catalyst and dye using MCR-ALS technique. This photo catalyst does not aggregate even after a long period of time due to the large number of hydroxyl group in complex carbohydrate [39]. The N-GQDs doped into TiO2 increases the decolourization performance of methylene blue to 85% due to the excitation and transfer of electrons from N-GQDs to TiO2 which forms oxygen and hydroxyl free radicals that oxidize the dye [40].…”

Section: Dye Removalmentioning

confidence: 99%

A Review on the Removal of Dye, Pesticide and Pathogens from Waste Water Using Quantum Dots

Anand

Subala

Sumathi

et al. 2020

EJCHEM

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The industrial pollutants in water bodies tend to unsuitable for living organisms and irrigation uses. Water contamination is exaggerating at regular pace and the universe is holding carcinogenic agents. Therefore, there is a necessity of immediate action to generate a potential and efficient technology for water management. By means of this, quantum dots (QDs) have emerged as an effective probe for the removal process. This review discusses the methods for removing and degrading the coloured components, pesticides, pathogens from waste water and contaminants removal ability of QDs.

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“…[68][69][70][71][72][73][74][75] We employed MCR-ALS analysis to investigate the presence of intermediate nanorods species with distinct morphology and spectral characteristics during glutathioneinduced transverse overgrowth on Au NRs. In particular, when the spectroscopic data are coupled to multivariate curve resolution analysis it would be possible to decrypt useful information about the morphology variation as well as kinetic of process.…”

Section: Mcr-als Analysismentioning

confidence: 99%

“…In particular, when the spectroscopic data are coupled to multivariate curve resolution analysis it would be possible to decrypt useful information about the morphology variation as well as kinetic of process. [68][69][70][71][72][73][74][75] We employed MCR-ALS analysis to investigate the presence of intermediate nanorods species with distinct morphology and spectral characteristics during glutathioneinduced transverse overgrowth on Au NRs. Our analysis considered the recorded evolutionary absorption spectra in Fig.…”

Section: Mcr-als Analysismentioning

confidence: 99%

Colorimetric detection of glutathione based on transverse overgrowth of high aspect ratio gold nanorods investigated by MCR-ALS

2015

Self Cite

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In this paper, we present a simple platform for colorimetric detection of glutathione using gold nanorods (AR $ 6.5 AE 0.2) as a plasmonic sensor. The functional mechanism of the sensor is based on shifts of longitudinal plasmon resonance during selective transverse overgrowth induced by preferential binding of glutathione at the nanorod tips. Under the optimum conditions, a calibration curve showed two linear regimes at the range of 50 nM to 20 mM of glutathione with a detection limit as low as 40 nM. The nanosensor maintains relatively high selectivity for determination of glutathione in the presence of several other amino acids. However, cysteine at similar concentration levels strongly competes with glutathione for available binding sites, thereby interfering in the determination of glutathione. We employed multivariate curve resolution-alternating least square (MCR-ALS) to track the morphology variation of the nanorods and elucidate the kinetics of the overgrowth process in the presence of glutathione and cysteine.

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Chemometrics investigation of the light-free degradation of methyl green and malachite green by starch-coated CdSe quantum dots

Cited by 25 publications

References 61 publications

A facile ultrasonic-assisted fabrication of nitrogen-doped carbon dots/BiOBr up-conversion nanocomposites for visible light photocatalytic enhancements

A facile ultrasonic-assisted fabrication of nitrogen-doped carbon dots/BiOBr up-conversion nanocomposites for visible light photocatalytic enhancements

A Review on the Removal of Dye, Pesticide and Pathogens from Waste Water Using Quantum Dots

Colorimetric detection of glutathione based on transverse overgrowth of high aspect ratio gold nanorods investigated by MCR-ALS

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