Rational design for the microplasma synthesis from vitamin B9 to N-doped carbon quantum dots towards selected applications

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dc.contributor.authorPho, Q.H.
dc.contributor.authorLin, L.L.
dc.contributor.authorTran, N.N.
dc.contributor.authorTran, T.T.
dc.contributor.authorNguyen, A.H.
dc.contributor.authorLosic, D.
dc.contributor.authorRebrov, E.V.
dc.contributor.authorHessel, V.
dc.date.issued2022
dc.descriptionAvailable online 8 July 2022
dc.description.abstractN-doped carbon quantum dots (NCQD) are rationally designed and synthesised, for the first time, from folic acid (Vitamin B9) by a non-thermal microplasma jet. A new conceptual design was developed to synthesise the desirable NCQD for three main applications (nanopesticides, water purification, and theranostic treatment). The structural and analytical characterisation confirmed an average size of 3.1 nm for the synthesised NCQD with the multi-functional groups (-OH, –COOH, –NH2) on their surface. The TEM results indicated that the core of NCQD was a multilayered structure, including single defected graphene sheets of graphitic-nitrogen and pyrrolicnitrogen. In addition, fluorescence performance and stability of the as-prepared NCQD were determined. The quantum yield of NCQD was 35%, which is relatively high, with a strong blue fluorescence. A basis for predicting colloidal behaviours based on balancing molecular attractive and repulsive forces was elucidated by applying the Derjaguin, Landau, Vervey, and Overbeek (DLVO) theory. Finally, compared with other similar microplasmaassisted synthesis processes, this developed method has proven the ability to provide a tailored and scalable synthesis process of high-quantum-yield NCQD at gram-scale production.
dc.description.statementofresponsibilityQuoc Hue Pho, LiangLiang Lin, Nam Nghiep Tran, Tung T. Tran, An Hoa Nguyen, Dusan Losic, Evgeny V. Rebrov, Volker Hessel
dc.identifier.citationCarbon, 2022; 198:22-33
dc.identifier.doi10.1016/j.carbon.2022.07.004
dc.identifier.issn0008-6223
dc.identifier.issn1873-3891
dc.identifier.orcidPho, Q.H. [0000-0002-2711-2227]
dc.identifier.orcidTran, N.N. [0000-0001-7199-7299]
dc.identifier.orcidLosic, D. [0000-0002-1930-072X]
dc.identifier.orcidRebrov, E.V. [0000-0001-6056-9520]
dc.identifier.orcidHessel, V. [0000-0002-9494-1519]
dc.identifier.urihttps://hdl.handle.net/2440/136180
dc.language.isoen
dc.publisherElsevier
dc.rights© 2022 Elsevier Ltd. All rights reserved.
dc.source.urihttps://doi.org/10.1016/j.carbon.2022.07.004
dc.subjectNonthermal microplasma; NCQD; Rational design; Quantum materials; Quantum dots
dc.titleRational design for the microplasma synthesis from vitamin B9 to N-doped carbon quantum dots towards selected applications
dc.typeJournal article
pubs.publication-statusPublished

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