Influence of Ethanolic Plant Extracts on Morphology and Size Distribution of Sol‐Gel Prepared TiO 2 Nanoparticles
2021; Wiley; Volume: 6; Issue: 16 Linguagem: Inglês
10.1002/slct.202100494
ISSN2365-6549
AutoresRafael‐Aurelio Rodríguez‐Jiménez, Yesmin Panecatl‐Bernal, J. Carrillo-López, Miguel‐Ángel Méndez‐Rojas, Anabel Romero‐López, M. Pacio, Israel Vivaldo, A. Morales–Sánchez, R. Arce, Jorge Caram, Julio Villanueva‐Cab, J. Alvarado,
Tópico(s)Pigment Synthesis and Properties
ResumoAbstract The influence of ethanolic extracts of three common plants ( Equisetum arvense, Syzygium aromaticum and Camellia sinensis ) on the morphology and size distribution of TiO 2 nanoparticles prepared using the sol‐gel method is presented. The phytochemicals extracted from the plants acted as surfactants, modifying the growth mechanism and stabilizing high‐quality small, quasi‐spherical, non‐aggregated TiO 2 nanoparticles with sizes in the range from 20–50 nm. The most satisfactory result was achieved using extracts of E. arvense . The structural, morphological, and optical properties of TiO 2 nanoparticles prepared using E. arvense ethanolic extracts are discussed. After thermal treatment at 550 °C, the TiO 2 nanoparticles were present only in the anatase crystalline phase, with a bandgap of 3.27 eV, as confirmed by X‐ray diffraction and UV‐vis analyses, respectively. These small morphologically homogeneous TiO 2 nanoparticles stabilized by low‐cost, abundant and eco‐friendly capping agents may be useful as components in photovoltaic cells, pharmaceutical and cosmetic products, as well as for photocatalytic uses.
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