Zuher, Ghasaq, et al. “Producing Hydrogen Energy Using Cr2O3-TiO2 Nanocomposite With Animal (Chitosan) Extract via Photocatalaysis ”.
Ibn AL-Haitham Journal For Pure and Applied Sciences, vol. 35, no. 4, Oct. 2022, pp. 83-93,
https://doi.org/10.30526/35.4.2853.