Sugarcane juice derived carbon dot–graphitic carbon nitride composites for bisphenol A degradation under sunlight irradiation

Sim, Lan Ching; Wong, Jing Lin; Hak, Chen Hong; Tai, Jun; Leong, Kah Hon; Saravanan, Pichiah

doi:10.3762/bjnano.9.35

Cited by 44 publications

(12 citation statements)

References 77 publications

(88 reference statements)

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“…Recent results [8,10] also show that the luminescence of fresh porous silicon samples is subject to a large red shift when it is exposed to air and when the average size of the nanocrystals is smaller than 3 nm. On the other hand, recent luminescence measurements on silicon crystals obtained by silane decomposition are in good agreement with theory, but the luminescence is only observed for the largest crystallites.…”

Section: Results Of the Experimentsmentioning

confidence: 95%

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Metrology of the Real Nanoclusters: Structure and Optical Characteristics

Kovalchuk¹,

Smorzh²

2020

Metrolog. and instr.

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In this paper, we have discussed in detail the electronic structure and optical characteristics of the silicon nanoclusters. One of the main conclusions is that the comparison between theoretical calculations and experimental results are correct. We shows the possibility of different radiative channels for the recombination in porous silicon. We now analyze the case of stronger disorder as obtained in amorphous silicon (a-Si). It raises extremely interesting problems related to the confinement-induced blue shift of the energy gap: (a) does it exist in nanoclusters of a-Si and is it comparable to what is obtained for c-Si; (b) what is the behavior of disorder-induced localized states in this regard. It has been often assumed that quantum confinement’s effects are small in a-Si nanostructures due to the short coherence length of free carriers in these materials. We will see that it is not true. We calculate the electronic structure of a-Si and a-Si:H spherical clusters using the parametrized density functional theory (PDFT) model [1]. The starting structure for the a-Si or a-Si: H nanoclusters is obtained by selecting the atoms belonging to the respective atoms unit cell. Due to the new boundary conditions the structure is no more in equilibrium and we have thus relaxed the atomic positions using a Keating potential.

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Section: Results Of the Experimentsmentioning

confidence: 95%

“…The accelerated development of NTs is also associa ted with integrated semiconductor electronics -nanoelectronics (NE) and investigation of the nanoclusters [7,8]. The main principle here is to increase the level of integration by reducing the size of the active elements placed on the chip [9,10].…”

Section: Literature Reviewmentioning

confidence: 99%

Metrology of the Real Nanoclusters: Structure and Optical Characteristics

Kovalchuk¹,

Smorzh²

2020

Metrolog. and instr.

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“…The most common materials widely used include TiO 2 , ZnO, WO 3 , g-C 3 N 4 , etc. [6][7][8][9][10][11][12][249][250][251][252][253][254][255][256]. Photocatalysts have proven to be helpful in degrading several categories of organic contaminants including POPs and endocrine disrupting compounds (EDCs).…”

Section: Nanostructure Photocatalysts For Water and Wastewater Treatmentmentioning

confidence: 99%

“…Major categories of pollutants that have been successfully removed include textile dyes, phenolic compounds, pesticides, insecticides, aldehydes, pharmaceuticals, health care products, etc. It has been observed that intrinsic modifications such as doping, cocatalyst loading, as well as extrinsic modification such as addition of external electron acceptor can significantly enhance the mineralisation rate of these pollutants under diverse light sources [6][7][8][9][10][11][12][13].…”

Section: Introductionmentioning

confidence: 99%

A review on the progress of nanostructure materials for energy harnessing and environmental remediation

et al. 2018

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The nanostructured materials offer various advantages as they provide more flexible space for ease reconstruction, as their nanosize expands the limits and results in confinement effect, enhanced mechanical stability, and large surface area, and make them suitable for photocatalytic activities. The advancement in synthesis techniques provides the freedom to alter its physical properties as per the demand. This article provides a 360° view point on the nanomaterials which are used for solar energy harnessing with respect to environmental and energy application. The discussion emphasizes on various synthesis methods of nanostructured materials, their mechanistic features, usage in demanding applications such as photosplitting of water for hydrogen production, artificial photosynthesis, and water and wastewater treatment with an endnote highlighting the future scope of nanomaterials for real-world applications.

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“…CQD could be easily produced and its properties could be modified with various functional groups by tuning the precursors and reaction parameters for different applications [ 11 ]. Previous studies showed that CQD had considerable promise in a variety of research areas such as biosensing, bioimaging and photocatalytic applications [ 12 ].…”

Section: Introductionmentioning

confidence: 99%

Novel Carbon Quantum Dots/Silver Blended Polysulfone Membrane with Improved Properties and Enhanced Performance in Tartrazine Dye Removal

et al. 2020

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This study produced a novel polysulfone (PSF) membrane for dye removal using lemon-derived carbon quantum dots-grafted silver nanoparticles (Ag/CQDs) as membrane nanofiller. The preparation of CQDs was completed by undergoing hydrothermal treatment to carbonize the pulp-free lemon juice into CQD solution. The CQD solution was then coupled with Ag nanoparticles to form Ag/CQDs nanohybrid. The synthesized powders were characterized in terms of morphologies, functional groups and surface charges. A set of membranes was fabricated with different loadings of Ag/CQDs powder using the nonsolvent-induced phase separation (NIPS) method. The modified membranes were studied in terms of morphology, elemental composition, hydrophilicity and pore size. In addition, pure water flux, rejection test and fouling analysis of the membranes were evaluated using tartrazine dye. From the results, 0.5 wt % of Ag/CQD was identified as the optimum loading to be incorporated with the pristine PSF membrane. The modified membrane exhibited an excellent pure water permeability and dye rejection with improvements of 169% and 92%, respectively. In addition, the composite membrane also experienced lower flux decline, higher reversible fouling and lower irreversible fouling. This study has proven that the addition of CQD additives into membrane greatly improves the polymeric membrane’s properties and filtration performance.

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Sugarcane juice derived carbon dot–graphitic carbon nitride composites for bisphenol A degradation under sunlight irradiation

Cited by 44 publications

References 77 publications

Metrology of the Real Nanoclusters: Structure and Optical Characteristics

Metrology of the Real Nanoclusters: Structure and Optical Characteristics

A review on the progress of nanostructure materials for energy harnessing and environmental remediation

Novel Carbon Quantum Dots/Silver Blended Polysulfone Membrane with Improved Properties and Enhanced Performance in Tartrazine Dye Removal

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