Sunlight induced photodegradation of toxic azo dye by self-doped iron oxide nano-carbon from waste printer ink

Saini, Deepika; Aggarwal, Ruchi; Anand, Satyesh Raj; Sonkar, Sumit Kumar

doi:10.1016/j.solener.2019.09.022

Cited by 45 publications

(32 citation statements)

References 91 publications

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“…It was observed from Figure a that on increasing the dose, a faster photocatalytic removal process occurred. The species which were responsible for this photocatalytic removal process were identified from the scavenger study. − Different types of scavengers were used to trap different types of generated species such as benzoquinone (BZQ) to trap superoxide radicals, tert -butanol ( t -BuOH) to trap hydroxyl radicals, sodium salt of ethylenediaminetetraacetic acid (Na 2 -EDTA) to trap holes. To observe the photoactive catalytic removal phenomena of Cr(VI) ions (20 ppm), different scavenger solutions were used with a mixture solution and control solution (scavenger absent).…”

Section: Resultsmentioning

confidence: 99%

N, S-codoped Carbon Dots for Nontoxic Cell Imaging and As a Sunlight-Active Photocatalytic Material for the Removal of Chromium

Saini

Kaushik

Garg

et al. 2020

ACS Appl. Bio Mater.

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Nitrogen−sulfur codoped carbon dots (NSCD) were synthesized via a single-step microwave-assisted method having a fluorescence quantum yield of ∼12%. The NSCD has been proven to be nontoxic and utilized as a fluorescent imaging nanoprobe for cancer cells (HeLa cells) under UV and blue light excitation (in vitro environment). In addition to the long-known cell imaging application, these NSCD have been used as a sunlight active photomaterial for the removal of toxic hexavalent chromium as Cr(VI). The experimental results reveal that the sunlight active NSCD shows good potential toward the photocatalytic removal of Cr(VI) ions from the wastewater. For the environment and water purification purpose, three different wastewater samples were tested that are synthetic wastewater (up to 100 ppm), laboratory wastewater, and Cr(VI) ion-spiked industrial wastewater for the photocatalytic removal of Cr(VI). The biocompatible NSCD as a fluorescent imaging probe of cancer cells along with its fruitful utilization in photocatalysis under sunlight (compared to the dark condition) demonstrates the overall sustainability of the presented process.

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Section: Resultsmentioning

confidence: 99%

N, S-codoped Carbon Dots for Nontoxic Cell Imaging and As a Sunlight-Active Photocatalytic Material for the Removal of Chromium

Saini

Kaushik

Garg

et al. 2020

ACS Appl. Bio Mater.

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“…Conversion of regularly generated waste product into useful nanomaterial generally comes under the sustainable development [20]. A broad range of industrial waste has been thermo-chemically treated to recover valuable nanomaterials (Table 1).…”

Section: Recovery/synthesis Of Nanomaterials From Industrial Wastementioning

confidence: 99%

Synthesis of nanomaterial from industrial waste and its application in environmental pollutant remediation

Judith

Vasudevan

2021

Environmental Engineering Research

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Increased productions of waste from industries have persuaded in sustainable and naturally stable methods to reuse the waste. Utilization of wastes for the synthesis of nanomaterial is of significant importance due to its extensive variety of uses in various industrial sectors. This review focuses on potential options available for nanomaterial synthesis from waste produced by industrial activities and manufacturing processes. Possible application of industrial waste derived nanomaterial for the expulsion of organic and inorganic contaminants is discussed. Furthermore, the future opportunities and challenges in this emerging research area of converting industrial waste to nanomaterials are addressed.

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“…5 Moreover, it is found that, through thermal decomposition, waste toner powders were converted to a mixture composed of carbon and ferric oxides, which exhibited potential in the fields of supercapacitors, 2 lithium ion batteries 6 and heterogeneous catalysts for oxidizing styrene to benzaldehyde; 7 as well as photocatalysts for degrading toxic molecules, such as azo dyes, under light irradiation. 8…”

Section: Introductionmentioning

confidence: 99%

“…Though value-added products could be obtained from the waste toner via these techniques, most of these techniques for dealing with waste toner require a step of heat treatment above 400 °C in a pyrolysis furnace, 2,5–8 so air pollution is almost inevitable due to the release of monoxide and VOCs from the waste toner. On the other hand, waste toner endures a complex process during heat treatment, where the quality of the products depends on a series of parameters, such as the calcination temperature, heating rate, cooling rate and the pressure and atmosphere in the furnace.…”

Section: Introductionmentioning

confidence: 99%

Visible-light-driven hydrogen evolution from waste toner powder activated by Ni species

Zhang

Wang

et al. 2022

Green Chem.

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Sunlight induced photodegradation of toxic azo dye by self-doped iron oxide nano-carbon from waste printer ink

Cited by 45 publications

References 91 publications

N, S-codoped Carbon Dots for Nontoxic Cell Imaging and As a Sunlight-Active Photocatalytic Material for the Removal of Chromium

N, S-codoped Carbon Dots for Nontoxic Cell Imaging and As a Sunlight-Active Photocatalytic Material for the Removal of Chromium

Synthesis of nanomaterial from industrial waste and its application in environmental pollutant remediation

Visible-light-driven hydrogen evolution from waste toner powder activated by Ni species

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