I-CEll raw data

Published: 20 April 2022| Version 1 | DOI: 10.17632/m2krns7nbf.1
Ricardo Starbird


The following data provides evidence of the cellulose modification using gamma radiation to be used as template. Gamma irradiation was applied as a green technology to functionalize cellulose, improving its stability in water and reducing its size. Our data showed an intensification of carbonyl groups signal and decrease of the thermal stability on of the cellulose, as result of the gamma radiation dose. Infrared and thermal data of the treated cellulose suggest the rupture of the internal bonds of the cellulose and the formation of functional groups that improve its use as template in the preparation of photocatalyst composites. Finally, a conductive polymer was deposited on a gamma irradiated cellulose to be used on the removal of organic contaminants in water.


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Attenuated total reflectance-Fourier transformed infrared spectroscopy (ATR-FTIR) was conducted on a spectrometer equipped with an iATR accessory (Nicolet 380, Thermo Scientific, Madison, Wisconsin, USA) controlled with OMNIC v9.3.30 software. Dry samples were placed directly onto the diamond window (ca. 2 mg) without further preparation. Measurements were made in transmittance mode, in the 4000-600 cm−1 spectral range using 32 scans at a resolution of 4 cm–1. The oxidation degree was followed by measure the ratio of the C=O group (1735 cm-1) signal normalized by the C-H stretching band (2990 cm-1). Thermogravimetric analyses (TGA) were carried out for commercial and irradiated samples in an SDT Q600 from TA Instruments (New Castle, Delaware, USA). A nitrogen atmosphere (100 mL/min) was maintained during the analysis with a scan rate of 10 °C/min, from room temperature to 700 °C in alumina cups (110 µL) (TA Instruments, New Castle, Delaware, USA). The decomposition temperature, weight loss (L) and residues were determined for each sample.


Tecnologico de Costa Rica


Materials Characterization