New Nanotech from an Ancient Material: Chemistry Demonstrations Involving Carbon-Based Soot

Campbell, Dean J.; Andrews, Mark; Stevenson, Keith J.

doi:10.1021/ed300087t

Cited by 29 publications

(37 citation statements)

References 39 publications

(94 reference statements)

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“…Soot is a product of impure carbon particles resulting from the pyrolysis processes involving carbon-containing fuel and incomplete combustion of organic materials [20]. Carbon soot is an inexpensive, non-toxic and easily obtained material that is used in current chemical research and can be used for a variety of chemistry demonstrations [21]. The particle size of soot grains is often small in the nanometer range, classifying them as nanoparticles and make roughness at the nanoscale level on the substrates [22,23].…”

Section: Introductionmentioning

confidence: 99%

Recyclable magnetic superhydrophobic straw soot sponge for highly efficient oil/water separation

Beshkar

Khojasteh

Salavati‐Niasari

2017

Journal of Colloid and Interface Science

170

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A simple and low-cost route to fabricate durable superhydrophobic magnetic polyurethane sponge was obtained by immersing a polyurethane sponge in a colloidal suspension of straw soot and magnetic nanoparticles. The as prepared sponge was used for separation of oil/water mixture. XRD, FT-IR, VSM, SEM and contact angle measurement analysis were used for characterization the materials. The effects of different stabilizer or surfactants (cetyltrimethylammonium bromide (CTAB), sodium dodecyl sulfate (SDS) and polyethylene glycol 6000 (PEG 6000)) on the morphology and geometrical structure of magnetic nanoparticles were investigated. For increasing the hydrophobic property of the surface, the sponge was further modified using PDMS. Results indicated that this matter can promote interfacial interactions between the sponge surface and oil. The prepared sponge showed excellent superhydrophobicity with water contact angle as high as 154°. Experiments showed that the amount of the absorbed oil was about 30 times of sponges own weight, it has our 30 times recyclability and the advantage of magnetic separation.

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Section: Introductionmentioning

confidence: 99%

Recyclable magnetic superhydrophobic straw soot sponge for highly efficient oil/water separation

Beshkar

Khojasteh

Salavati‐Niasari

2017

Journal of Colloid and Interface Science

170

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“…The hydrothermal method involves carbonization, a complex pyrolytic reaction, including the processes of dehydrogenation, condensation, hydrogen transfer and isomerisation, which uses moderate temperatures and pressures over an aqueous solution of biomass for several hours [23]. Many raw materials including candle soot [24], plant soot [25], commercial activated carbon [18], lampblack [26], watermelon peel [27], small molecules [28], orange juice [29], etc., have been explored as raw materials for the synthesis of carbon NSs. We have reported the use of oligosaccharide cyclodextrin and polysaccharide cellulose to prepare multicolour carbon NSs [30].…”

Section: Introductionmentioning

confidence: 99%

Nanostructures Derived from Starch and Chitosan for Fluorescence Bio-Imaging

Huang

et al. 2016

Nanomaterials

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Fluorescent nanostructures (NSs) derived from polysaccharides have drawn great attention as novel fluorescent probes for potential bio-imaging applications. Herein, we reported a facile alkali-assisted hydrothermal method to fabricate polysaccharide NSs using starch and chitosan as raw materials. Transmission electron microscopy (TEM) demonstrated that the average particle sizes are 14 nm and 75 nm for starch and chitosan NSs, respectively. Fourier transform infrared (FT-IR) spectroscopy analysis showed that there are a large number of hydroxyl or amino groups on the surface of these polysaccharide-based NSs. Strong fluorescence with an excitation-dependent emission behaviour was observed under ultraviolet excitation. Interestingly, the photostability of the NSs was found to be superior to fluorescein and rhodamine B. The quantum yield of starch NSs could reach 11.12% under the excitation of 360 nm. The oxidative metal ions including Cu(II), Hg(II)and Fe(III) exhibited a quench effect on the fluorescence intensity of the prepared NSs. Both of the two kinds of the multicoloured NSs showed a maximum fluorescence intensity at pH 7, while the fluorescence intensity decreased dramatically when they were put in an either acidic or basic environment (at pH 3 or 11). The cytotoxicity study of starch NSs showed that low cell cytotoxicity and 80% viability was found after 24 h incubation, when their concentration was less than 10 mg/mL. The study also showed the possibility of using the multicoloured starch NSs for mouse melanoma cells and guppy fish imaging.

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“…Carbon dots (CDs), which have attracted a signicant amount of attention, are found to be photochemically stable and emission tunable with non-blinking uorescence and to have excellent water solubility, and they can be produced cost-effectively on a large scale. [1][2][3][4] Particularly, CDs without heavy metal content are more environmentally friendly. [5][6][7] They have been shown to be promising two-photon uorescent probes for biomedical imaging and biosensing because of the low background signal, deep tissue penetration, reduced photobleaching and low phototoxicity associated with the use of near infrared excitation.…”

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confidence: 99%

A mitochondria-targeted fluorescent probe based on TPP-conjugated carbon dots for both one- and two-photon fluorescence cell imaging

Wang

et al. 2014

RSC Adv.

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A simple approach of a mitochondria-targeted fluorescent probe has been demonstrated for the preparation of highly water-soluble and fluorescent TPP-conjugated carbon dots (TPP-CDs) derived from lowcost citric acid and urea. We found that the TPP-CDs are suitable for both one-and two-photon mitochondria-selective imaging in living cells.Scheme 1 Schematic illustration of the synthesis of N-doped TPP-CDs for mitochondria-targeted cell imaging.

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New Nanotech from an Ancient Material: Chemistry Demonstrations Involving Carbon-Based Soot

Cited by 29 publications

References 39 publications

Recyclable magnetic superhydrophobic straw soot sponge for highly efficient oil/water separation

Recyclable magnetic superhydrophobic straw soot sponge for highly efficient oil/water separation

Nanostructures Derived from Starch and Chitosan for Fluorescence Bio-Imaging

A mitochondria-targeted fluorescent probe based on TPP-conjugated carbon dots for both one- and two-photon fluorescence cell imaging

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