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Sunlight promoted r...
Sunlight promoted removal of toxic hexavalent chromium by cellulose derived photoactive carbon dots
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- Aggarwal, Ruchi (author)
- Malaviya National Institute of Technology Jaipur (MNIT)
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- Saini, Deepika (author)
- Malaviya National Institute of Technology Jaipur (MNIT)
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- Sonkar, Sumit Kumar (author)
- Malaviya National Institute of Technology Jaipur (MNIT)
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- Sonker, Amit Kumar, 1989 (author)
- Massachusetts General Hospital,Chalmers tekniska högskola,Chalmers University of Technology
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- Westman, Gunnar, 1964 (author)
- Chalmers tekniska högskola,Chalmers University of Technology,Massachusetts General Hospital
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(creator_code:org_t)
- Elsevier BV, 2022
- 2022
- English.
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In: Chemosphere. - : Elsevier BV. - 0045-6535 .- 1879-1298. ; 287
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https://doi.org/10.1...
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Abstract
Subject headings
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- A scalable synthetic procedure for fabricating photoactive carbon dots (CD) from microcrystalline cellulose (MCC) is presented. The MCC was transformed into a photoactive nanosized CD by a one-step acid-assisted thermal-carbonization (~90 °C for 30 min). The efficiency of the obtained CD was determined by photo-removal of toxic hexavalent chromium (Cr(VI)) ions from wastewater. CD obtained from cellulose completely removed 20 ppm of Cr(VI) wastewater within ∼120 min under sunlight illumination. No Cr(VI) removal was observed in dark conditions and with control cellulose material as reference samples. The Cr(VI) removal follows pseudo-first-order kinetics along with a half-life of ∼26 min. Furthermore, the Cr(VI) removal from wastewater was supported via cyclic voltammetry analysis. Using a low-cost, naturally available cellulose material and sulfuric acid, the world's most-used chemical, creates techno-economic prerequisites for a scalable process of photoactive carbon dots.
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Kemiteknik -- Polymerteknologi (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Chemical Engineering -- Polymer Technologies (hsv//eng)
- NATURVETENSKAP -- Kemi -- Materialkemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Materials Chemistry (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Miljöbioteknik -- Vattenbehandling (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Environmental Biotechnology -- Water Treatment (hsv//eng)
Keyword
- Biomass
- Photocatalysis
- Heavy metal removal
- Acid assisted carbonization
Publication and Content Type
- art (subject category)
- ref (subject category)
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