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b
a Faculty of Engineering, Architecture and Design, Autonomous University of
Baja California, Ensenada, Baja California. C.P. 22860, México
b Tecnológico Nacional de México/IT de Los Mochis, Los Mochis, Sinaloa. C.P.
81259, México
c Centro de Nanociencias y Nanotecnología-UNAM, Ensenada, Baja California.
C.P. 22800, México.
d Instituto de Ingeniería y Tecnología, Universidad Autónoma de Ciudad Juárez,
Ciudad Juárez, C.P. 32310, Chihuahua, México
e Center for Global Health Research, Saveetha Medical College and Hospital,
Saveetha Institute of Medical and Technical Sciences (SIMATS), Saveetha
University, Chennai, 602105, Tamil Nadu, India
Journal of Ovonic Research 2025, 21(1),47-60; https://doi.org/10.15251/JOR.2025.211.47
In this work, ZnO semiconductor nanoparticles were green-synthesized using Capsicum annuum L. var. Caribe pepper extracts at 1%, 2%, and 4% w/v (weight/volume) as stabilizing agents. The nanoparticles were applied in photocatalytic processes for the degradation of Methylene Blue (MB), Methyl Orange (MO), and Rhodamine B (RhB) in aqueous media. Characterization involved Fourier Transform Infrared Spectroscopy (FT- IR), identifying the Zn-O bond at 421 cm-1. X-Ray Diffraction (XRD) analysis revealed a hexagonal Wurtzite-type crystalline phase with crystallite sizes ranging from 13 to 23 nm.
Scanning Electron Microscopy (SEM) showed hemispherical clusters smaller than 5 micrometers. UV–Visible spectrophotometry determined band gap values between 3.05 and 3.13 eV. These materials exhibited significant photocatalytic degradation efficiency for the tested dyes.
