NANOSCIENCE – THEORY TO APPLICATION

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1 article(s) from Ojeda-Galván, Hiram Joazet

Upcycling agroindustrial waste into graphene oxide supports for gold nanoparticles: toward sustainable nanomaterials

Juan Marcos Castro-Tapia,
Selene Acosta,
Hiram Joazet Ojeda-Galván,
Elsie Evelyn Araujo-Palomo,
Edgar Giovanni Villabona-Leal and
Mildred Quintana

Beilstein J. Nanotechnol. 2026, 17, 489–504, doi:10.3762/bjnano.17.32

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Figure 1: UV–vis absorption spectra of GO samples (GO, rGO, Agro-GOP, Agro-GOX, and Agro-GOC).

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Figure 2: Raman spectra of GO, rGO, Agro-GOP, Agro-GOX, and Agro-GOC samples, highlighting D and G bands.

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Figure 3: XPS survey spectra of GO, rGO, Agro-GOP, Agro-GOX, and Agro-GOC samples, showing the presence of ca...

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Figure 4: C 1s XPS spectra of (a) GO, (b) rGO, (c) Agro-GOP, (d) Agro-GOX, and (e) Agro-GOC samples. C1 is as...

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Figure 5: ATR-FTIR spectra of GO samples (GO, rGO, Agro-GOP, Agro-GOX, Agro-GOC), showing characteristic vibr...

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Figure 6: TEM images of GO-based materials: (a–d) GO, (e–h) rGO, (i–l) Agro-GOP, (m–p) Agro-GOX, and (q–t) Ag...

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Figure 7: X-ray diffraction (XRD) patterns of GO, rGO, and agroindustrial waste-derived samples (Agro-GOP, Ag...

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Figure 8: Thermogravimetric analysis (TGA) curves of GO, rGO, and agroindustrial waste-derived samples (Agro-...

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Figure 9: UV–vis spectra of AuNPs and AuNPs supported on GO samples. The plasmon resonance peak appears at 52...

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Figure 10: TEM images of AuNP-decorated GO-based materials. Each row represents a hybrid: (a–d) AuNPs@GO, (e–h...

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Figure 11: Particle size distribution histograms of AuNPs deposited on GO platforms.

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Published 01 Apr 2026

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