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PHOTOCATALYTIC PERFORMANCE OF ZnO/N-rGO FOR LIGNIN DEGRADATION UNDER VIS LIGHT ENERGY

Published online by Cambridge University Press:  04 November 2019

A. Ramos-Corona
Affiliation:
División de Estudios de posgrado de la Facultad de Ingeniería Química, Universidad Michoacana de San Nicolás de Hidalgo, Gral. Francisco J. Múgica S/N, Ciudad Universitaria, Z.P. 58030 Morelia, Michoacán, México.
R. Rangel*
Affiliation:
División de Estudios de posgrado de la Facultad de Ingeniería Química, Universidad Michoacana de San Nicolás de Hidalgo, Gral. Francisco J. Múgica S/N, Ciudad Universitaria, Z.P. 58030 Morelia, Michoacán, México.
J. J. Alvarado-Gil
Affiliation:
Departamento de Física Aplicada, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional-Unidad Mérida, Z.P.97310, Mérida, Yucatán, México.
E. Adem
Affiliation:
Instituto de Física, Universidad Nacional Autónoma de México, Z. C.04510, México City, México
*
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Abstract

The present work describes a simple method to produce zinc oxide nanoparticles supported in nitrogen-doped reduced graphene oxide, ZnO/N-rGO. The rGO structures were nitrogen-doped using hydrazine as nitrogen source (N-rGO) with the purpose of enhancing the rGO capability to promote the electrons transport along their surface. Thus, ZnO/N-rGO catalytic systems were tested as photocatalyst to degrade methylene blue and lignin molecules under ultraviolet (UV) and visible (Vis) light irradiation. N-doping of rGO was confirmed by X-ray photoelectron spectroscopy (XPS). Photocatalytic degradation studies confirm better performance of the ZnO/N-rGO in comparison to ZnO. The percentage of lignin degradation for the ZnO/N-rGO compound under UV was 59%, while using visible energy it was achieved 46%, in a time of 70 min.

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Articles
Copyright
Copyright © Materials Research Society 2019 

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References

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