Nano‐Carbons from Pollutant Soot: A Cleaner Approach toward Clean Environment

Tripathi, Kumud Malika; Gupta, Nidhi Rani; Sonkar, Sumit Kumar

doi:10.1002/9781119041214.ch5

Cited by 12 publications

(12 citation statements)

References 92 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…9 Presently, the doping of the CD are used to articulate its potential properties, with a huge expectation of the exploration of its newer prospects. For instance, in the field of water treatment 18,19 via aqueous phase photocatalysis, 6,7,20 which has been barely investigated. As per the general understanding, the heavy-metal-ion contamination in water is a severe threat, which indeed demands a viable, sustainable approach for its efficient sensing followed by its removal.…”

Section: Introductionmentioning

confidence: 99%

Sunlight-induced photoreduction of Cr(VI) to Cr(III) in wastewater by nitrogen-phosphorus-doped carbon dots

et al. 2019

Self Cite

View full text Add to dashboard Cite

Cr(VI) is a known toxic and non-biodegradable pollutant that results from multiple industrial processes, and can cause significant environmental damage if it is not removed from wastewater. However, it can be reduced to Cr(III), which is less toxic and can be readily precipitated out and removed. Here, a fast and facile single-step technique is reported for the synthesis of nitrogen-phosphorus doped fluorescent carbon dots (NP-CD) using a domestic microwave, as a potential photocatalytic material. Under natural sunlight, a simple photocatalytic experiment reveals that the NP-CD are highly efficient for the quantitative reduction of Cr(VI) to Cr(III) in synthetic contaminated water, in a linear range from 10 ppm (in approximately 10 min) to 2000 ppm (in approximately 320 min) by increasing the sunlight irradiation time followed by its removal by precipitation. NP-CD exhibit high recyclability of up to six cycles without any apparent loss in photocatalytic activity, demonstrating NP-CD as a potential photocatalyst material for Cr(VI) water treatment.

show abstract

Section: Introductionmentioning

confidence: 99%

Sunlight-induced photoreduction of Cr(VI) to Cr(III) in wastewater by nitrogen-phosphorus-doped carbon dots

et al. 2019

Self Cite

View full text Add to dashboard Cite

show abstract

“…CNDs can be easily and quickly internalized into living cells and demonstrate almost negligible toxicity [5]. Their versatile tunable properties along with solution-processing technology endow CNDs for enormous potential applications in photo-catalysis [6], photo-detectors [7], water remediation [8], sensors [9], energy storage [10], lasers [11], photovoltaic devices [7], LEDs [12], drug delivery [13], and bioimaging [14][15][16]. CNDs exhibit strong quantum effects due to their quantum size and quantum confinement, consequently exhibiting intriguing optical properties [17].…”

Section: Introductionmentioning

confidence: 99%

Water Soluble Fluorescent Carbon Nanodots from Biosource for Cells Imaging

Tripathi

Tran

Tùng

et al. 2017

Journal of Nanomaterials

Self Cite

View full text Add to dashboard Cite

Carbon nanodots (CNDs) derived from a green precursor, kidney beans, was synthesized with high yield via a facile pyrolysis technique. The CND material was easily modified through simple oxidative treatment with nitric acid, leading to a high density “self-passivated” water soluble form (wsCNDs). The synthesized wsCNDs have been extensively characterized by using various microscopic and spectroscopic techniques and were crystalline in nature. The highly carboxylated wsCNDs possessed tunable-photoluminescence emission behavior throughout the visible region of the spectrum, demonstrating their application for multicolor cellular imaging of HeLa cells. The tunable-photoluminescence properties of “self-passivated” wsCNDs make them a promising candidate as a probe in biological cell-imaging applications.

show abstract

“…Zeta potential confirms the negative surface charge of wsCNRs (−33.4 mV) and hence facilitates the adsorption of positively charged MB over wsCNRs surface via ionpair interaction [2,20,28]. Paramagnetic nature of wsCNRs (presence of high-density unpaired electrons) facilitates the electron transfer between wsCNRs and MB that would be the advantage of visible light-induced photochemical degradation of MB.…”

Section: Resultsmentioning

confidence: 65%

“…Presently, various biological, chemical, and physical methods are available for the degradation of dye from sewage, like absorption, adsorption, flocculation, coagulation, ultrafiltration, and reverse osmosis, but unable to degrade properly as the transformation from one organic phase into another. To avoid this shortcoming of dye degradations, chemical oxidation, surface modifications [28], and advanced oxidation process (AOPs) are commonly used [29]. Still the existing methods could not be used potentially because of their high cost and incomplete degradation.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Sunlight-Induced Photochemical Degradation of Methylene Blue by Water-Soluble Carbon Nanorods

Bhati

Singh

Tripathi

et al. 2016

International Journal of Photoenergy

Self Cite

View full text Add to dashboard Cite

Water-soluble graphitic hollow carbon nanorods (wsCNRs) are exploited for their light-driven photochemical activities under outdoor sunlight. wsCNRs were synthesized by a simple pyrolysis method from castor seed oil, without using any metal catalyst or template. wsCNRs exhibited the light-induced photochemical degradation of methylene blue used as a model pollutant by the generation of singlet oxygen species. Herein, we described a possible degradation mechanism of methylene blue under the irradiation of visible photons via the singlet oxygen-superoxide anion pathway.

show abstract

Nano‐Carbons from Pollutant Soot: A Cleaner Approach toward Clean Environment

Cited by 12 publications

References 92 publications

Sunlight-induced photoreduction of Cr(VI) to Cr(III) in wastewater by nitrogen-phosphorus-doped carbon dots

Sunlight-induced photoreduction of Cr(VI) to Cr(III) in wastewater by nitrogen-phosphorus-doped carbon dots

Water Soluble Fluorescent Carbon Nanodots from Biosource for Cells Imaging

Sunlight-Induced Photochemical Degradation of Methylene Blue by Water-Soluble Carbon Nanorods

Contact Info

Product

Resources

About