Photocatalytic degradation and reusable SERS detection by Ag nanoparticles immobilized on g-C3N4/graphene oxide nanosheets

In this study, graphene oxide (GO) and a carbon 2D materials (g-C3N4 nanosheets) were combined to construct g-C3N4/GO nanosheets through π-π stacking interaction. Moreover, Ag+ ions were reduced to Ag nanoparticles and further grafted onto the g-C3N4/GO nanosheets (Ag@g-C3N4/GO) to impart the dual f...

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Published inSurface & coatings technology Vol. 435; p. 128212
Main Authors Peng, Guang-Zhi, Hardiansyah, Andri, Lin, Hsuan-Ting, Lee, Ruo-Yu, Kuo, Chih-Yu, Pu, Ying-Chih, Liu, Ting-Yu
Format Journal Article
LanguageEnglish
Published Lausanne Elsevier B.V 15.04.2022
Elsevier BV
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Summary:In this study, graphene oxide (GO) and a carbon 2D materials (g-C3N4 nanosheets) were combined to construct g-C3N4/GO nanosheets through π-π stacking interaction. Moreover, Ag+ ions were reduced to Ag nanoparticles and further grafted onto the g-C3N4/GO nanosheets (Ag@g-C3N4/GO) to impart the dual functionality of photocatalytic degradation and surface enhanced Raman scattering (SERS) detection. The Ag@g-C3N4/GO SERS substrate can be used to detect biomolecules (adenine) and organic pollutants (methylene blue). The X-ray diffraction, scanning electron microscopy, and Raman spectroscopy observations confirmed that g-C3N4 was successfully stacked onto the GO nanosheets. In addition, the Ag@g-C3N4/GO SERS substrate displayed photocatalytic ability. Pollutants in water were photodegraded by irradiation with visible light (405 nm), making the substrate self-cleaning and reusable. Thus, the Ag@g-C3N4/GO SERS nanosheets has potential for application in the photocatalytic degradation of water pollutants and detection of biomolecules. •Reusable SERS substrate was made by Ag/g-C3N4/graphene oxide nanosheets.•The water pollutants can be photodegraded by visible light (405 nm).•It can be recyclable use after photocatalytic degradation of water pollutants.
ISSN:0257-8972
1879-3347
DOI:10.1016/j.surfcoat.2022.128212