abstract

• This work deals with the fluorescence behavior exhibited by extracts of parota wood (enterolobium cyclocarpum) when are embedded in a silica matrix, and the effect of the temperature on the emission and structural properties. The organics were incorporated into a silica matrix using the sol-gel method, and the resulting hybrid composite was subjected to different heat treatments to study its thermal stability and the effect on their structural and fluorescence properties. The structural properties were studied using x-ray diffraction (XRD), and the organics were analyzed by infrared spectroscopy (FT-IR) and fluorescence spectroscopy. Results show that the silica matrix avoids the thermal decomposition of the organics, and the structural changes of the silica impact on the fluorescence properties. In this sense, the maximum emission obtained at 400 °C was three times higher than the RT. This behavior was attributable to the strong interactions between the cellulosic compounds and the silica. Also, the cellulosic compounds promote the formation of open Si-O arrangements. © 2021 The Author(s). Published by IOP Publishing Ltd.

authors

• Guerrero A.L.
• Herrera-González A.M.
• Martínez Mendoza José Refugio
• Nieto Villena Alejandra
• Ortega Zarzosa Gerardo
• Velázquez-Pérez S.

publication date

• 2021-01-01

published in

• Materials Research Express  Journal

keywords

• cellulose chains; fluorescence emission; hybrid composite; parota extracts; silica structure Composite structures; Decomposition; Fluorescence; Fluorescence spectroscopy; Heat treatment; Infrared spectroscopy; Silica; Silica gel; Sol-gel process; Sol-gels; Cellulosic compounds; Fluorescence behaviors; Fluorescence properties; Hybrid composites; Maximum emissions; Silica matrix; Silica xerogel; Strong interaction; Structural properties

Digital Object Identifier (DOI)

• 10.1088/2053-1591/abf610

PubMed ID

start page

end page

volume

• 8

issue

• 4