Catalyzed Microwave-Assisted Preparation of Carbon Quantum Dots from Lignocellulosic Residues

A lignocellulosic residue from the pulp and paper industry (primary sludge) was employed to obtain carbon-based fluorescent nanomaterials. The unprecedented preparation of the carbon quantum dots (CQDs) was carried out using a microwave-assisted reaction catalyzed by a solid acid catalyst, which induced the formation of CQDs. The obtained CDQs were fully characterized using a number of analytical techniques. HR-TEM images depicted particle sizes of average diameter value of 17.5 nm. UV-visible spectra displayed a characteristic peak at 325 nm associated with the formation of CQDs. Fluorescence measurements recorded at 360 nm (excitation wavelength) exhibited an emission band at ca. 435 nm. This emission signal turned out to be dependent on the excitation wavelength that further confirmed the presence of CQDs. © 2018 American Chemical Society.

Authors
Rodríguez-Padrón D.1 , Algarra M.2, 3 , Tarelho L.A.C.4 , Frade J.5 , Franco A.1 , De Miguel G. , Jiménez J.2 , Rodríguez-Castellón E.2 , Luque R. 1, 7
Journal
ACS Sustainable Chemistry and Engineering
Publisher
American Chemical Society
Number of issue
6
Language
English
Pages
7200-7205
Status
Published
Link
External link
DOI
10.1021/acssuschemeng.7b03848
Volume
6
Year
2018
Organizations
  • 1 Departamento de Quĺmica Organica, Universidad de Córdoba, Edif. Marie Curie, Ctra Nnal IV-A Km 396, Córdoba, E-14014, Spain
  • 2 Department of Inorganic Chemistry, Facultad de Ciencias, Universidad de Málaga, Campus de Teatinos s/n, Málaga, 29071, Spain
  • 3 Centro de Quĺmica da Madeira-CQM, Universidade da Madeira, Campus de Penteada, Funchal, 9020-105, Portugal
  • 4 Department of Environment and Planning, Centre for Environmental and Marine Studies (CESAM), University of Aveiro, Aveiro, 3810-193, Portugal
  • 5 Department of Materials and Ceramic Engineering (DEMAC), University of Aveiro, Aveiro, 3810-193, Portugal
  • 6 Departamento de Quĺmica Fisica y Termodinámica Aplicada, Instituto Universitario de Investigación en Quĺmica Fina y Nanoquĺmica, IUQFN, Universidad de Córdoba, Edif. Marie Curie, Ctra Nnal IV-A, Km 396, Córdoba, 14014, Spain
  • 7 Peoples Friendship University of Russia, RUDN University, 6 Miklukho-Maklaya Str., Moscow, 117198, Russian Federation
Keywords
Acid catalyst; Carbon quantum dots; Lignocellulosic residue; Microwave; Photoluminiscence
Date of creation
19.10.2018
Date of change
19.10.2018
Short link
https://repository.rudn.ru/en/records/article/record/6604/
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