Universidad de La Serena 1 article published in JoVE Chemistry A Facile Synthetic Method to Obtain Bismuth Oxyiodide Microspheres Highly Functional for the Photocatalytic Processes of Water Depuration Juan C. Durán-Álvarez1, Carolina Martínez1, Adriana C. Mera2, Raquel Del Angel1, Nini J. Gutiérrez-Moreno1, Rodolfo Zanella1 1Instituto de Ciencias Aplicadas y Tecnología, Universidad Nacional Autónoma de México, 2Instituto de Investigación Multidisciplinario en Ciencia y Tecnología, Universidad de La Serena This article describes a synthetic method to obtain bismuth oxyiodide microspheres, which are highly functional to perform the photocatalytic removal of organic pollutants, such as ciprofloxacin, in water under UV-A/visible light irradiation.