A sustainable approach for the valorization of lignocellulosic biomass in active photo- and electrocatalyst carbon dots

Date

2024

Authors

Jorge, Herculys Bernardo
Gier Della-Rocca, Daniela
Rodríguez-Castellón, Enrique
Amorim, Suélen Maria de
Winiarski, Joao Paulo
Vieira, Iolanda da Cruz
Peralta Muniz Moreira, Regina de Fatima

Director

Publisher

Springer
Acceso abierto / Sarbide irekia
Artículo / Artikulua
Versión aceptada / Onetsi den bertsioa

Project identifier

  • AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2021-2023/PID2021-126235OB-C32/ES/ recolecta
Impacto
No disponible en Scopus

Abstract

The recovery or degradation of organic wastes in the circular economy concept continues to be environmental protection challenges. In this study, we proposed a metal catalyst free production of useful non-doped (CDs) and nitrogen doped carbon dots (N-CDs) nanoparticles, generated from a greener hydrothermal top-down method, using paper scraps solid organic wastes from the pulp and paper industry. Both materials were fully characterized. At the same time, these high-added value materials were used as catalysts for the photocatalytic degradation of pollutants and for generating hydrogen through hydrogen evolution reaction (HER). The morphological study revealed the presence of nanoparticles with a higher carbon content than the raw biomass, from 13 to 51 wt% as assessed by X-ray photoelectron spectroscopy (XPS), ranging in size from 4.4 to 6.8 nm. The ability of these materials to catalyze the photodegradation of 4-nitrophenol has been tentatively investigated. The N-CDs proved to be more active than undoped-CDs to degrade 4-nitrophenol due to the smaller bandgap and more active sites available which will also accept the transferred electrons for H2 generation or 4-nitrophenol reduction.

Description

Keywords

Carbon dots, 4-nitrophenol, Photocatalytic degradation, Hydrogen evolution reaction, Lignocellulosic biomass valorization

Department

Ciencias / Zientziak / Institute for Advanced Materials and Mathematics - INAMAT2

Faculty/School

Degree

Doctorate program

item.page.cita

Jorge, H. B., Della-Rocca, D. G., Herrera, E., Rodríguez-Castellón, E., Gil, A., de Amorim, S. M., Winiarski, J. P., da Cruz Vieira, I., Moreira, R. F. P. M., Algarra, M., Peralta, R. A. (2024) A sustainable approach for the valorization of lignocellulosic biomass in active photo- and electrocatalyst carbon dots. Waste and Biomass Valorization, 1-15. https://doi.org/10.1007/s12649-024-02610-4.

item.page.rights

© The Author(s), under exclusive licence to Springer Nature B.V. 2024.

Los documentos de Academica-e están protegidos por derechos de autor con todos los derechos reservados, a no ser que se indique lo contrario.