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Updated: Feb 18, 2026
The Effect of Interfacial Chemical Bonding in TiO2-SiO2 Composites on Their Photocatalytic NOx Abatement Performance
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Crystallinity and lowering band gap induced visible light photocatalytic activity of TiO2/CS (Chitosan)
R Saravanan1, J Aviles1, F Gracia1
1Department of Chemical Engineering, Biotechnology and Materials, University of Chile, Beauchef 851 6th floor, Santiago, Chile.
Abstract:
The inhibition of electrons-holes recombination and enhancement of visible light photocatalytic activity were accomplished by the synthesized TiO2/CS nanocomposites system. In this present work, the different weight ratio of TiO2 and chitosan (75:25, 50:50 and 25:75) nanocomposites were synthesized via two-step method. After that, the existing functional groups, size and structure of the nanocomposites system were characterized via FT-IR, TEM and XRD measurements. The band gap of the prepared materials and its excitation and emission spectra were elevated through UV-vis and PL analyses. Moreover, the MO and MB degradation capability of the synthesized TiO2/CS nanocomposites was optimized, and the outcomes are described in detail.
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