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Survey of synthesis processes for N-doped carbon dots assessed by green chemistry and circular and ecoscale metrics
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Pho, Quoc Hue, Escriba-Gelonch, Marc, Losic, Dusan, Rebrov, Evgeny V., Tran, Nam Nghiep and Hessel, Volker (2021) Survey of synthesis processes for N-doped carbon dots assessed by green chemistry and circular and ecoscale metrics. ACS Sustainable Chemistry & Engineering, 9 (13). pp. 4755-4770. doi:10.1021/acssuschemeng.0c09279 ISSN 2168-0485.
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WRAP-Survey-synthesis-processes-N-doped-carbon-dots-green-chemistry-circular-ecoscale-2021.pdf - Accepted Version - Requires a PDF viewer. Download (2072Kb) | Preview |
Official URL: https://doi.org/10.1021/acssuschemeng.0c09279
Abstract
Six of the most promising lab-scale synthesis process methodologies for N-doped carbon dots (NCDs) are selected and compared in terms of green chemistry and circular and EcoScale/Good-Manufacturing-Practice metrics. We compare a new innovative route, the low-temperature plasma-enabled synthesis of carbon dots, e.g., from citric acid and monoethanolamine, to more-established literature processes, such as thermochemical processes, from the same or other materials. Along with this study, the advantages and disadvantages of each method are depicted in manifold sustainability facets. It is shown how recycling/reuse of nonconverted starting materials and solvents can improve the sustainability profile. In addition, safety constraints, cost analysis, and energy consumption are considered. The analysis showed that the thermal process from citric acid and monoethanolamine gives the best performance with regard to the sustainability assessment chosen here. It has a material circularity indicator of 0.971, with an EcoScale factor of 56% and an E-factor of 5.56. In continuation of those results, the paper shows how the low-temperature plasma using the same materials and the same recycling strategy can be improved to come closer to the performance of its thermal counterpart. It has the best energy efficiency, while lacking so far in mass efficiency. From this study, we learned more about which of these methods are most promising for scaling-up and industrial manufacturing of N-doped carbon dots.
Item Type: | Journal Article | |||||||||
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Subjects: | Q Science > QD Chemistry T Technology > TA Engineering (General). Civil engineering (General) T Technology > TP Chemical technology |
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Divisions: | Faculty of Science, Engineering and Medicine > Engineering > Engineering | |||||||||
Library of Congress Subject Headings (LCSH): | Nanostructured materials -- Synthesis, Carbon, Green chemistry | |||||||||
Journal or Publication Title: | ACS Sustainable Chemistry & Engineering | |||||||||
Publisher: | American Chemical Society | |||||||||
ISSN: | 2168-0485 | |||||||||
Official Date: | 5 April 2021 | |||||||||
Dates: |
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Volume: | 9 | |||||||||
Number: | 13 | |||||||||
Page Range: | pp. 4755-4770 | |||||||||
DOI: | 10.1021/acssuschemeng.0c09279 | |||||||||
Status: | Peer Reviewed | |||||||||
Publication Status: | Published | |||||||||
Reuse Statement (publisher, data, author rights): | “This document is the Accepted Manuscript version of a Published Work that appeared in final form in ACS Sustainable Chemistry & Engineering, copyright © American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see [insert ACS Articles on Request author-directed link to Published Work, see http://pubs.acs.org/page/policy/articlesonrequest/index.html].” | |||||||||
Access rights to Published version: | Restricted or Subscription Access | |||||||||
Copyright Holders: | Copyright © 2021 American Chemical Society | |||||||||
Date of first compliant deposit: | 18 June 2021 | |||||||||
Date of first compliant Open Access: | 23 March 2022 | |||||||||
RIOXX Funder/Project Grant: |
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