Titanium dioxide is a low cost and non-toxic material which possesses many notable applications in medicine, biology, synthesis of organic chemicals and photocatalysis, among others. Copper and sulphur co-doped titanium oxide nanoparticles have demonstrated to be versatile materials with catalytic and photocatalytic properties*. These materials are selective catalysts in the oxidation of sulphides to sulfoxides, which are important structural motifs in the synthesis of some drugs, as omeprazole. Additionally, these materials are also efficient photocatalysts to remove antibiotics from water, as ciprofloxacin, under visible light irradiation.
X-ray photoelectron spectroscopy (XPS) studies led to study the chemical composition of these materials, revealing the presence of Cu(II) and sulphate species in the co-doped materials, which act in a synergetic way to increase the catalytic and photocatalytic activity of the co-doped materials in comparison to undoped TiO2, and without modifying their stability. Besides, the electrochemical measurements confirm the results found in XPS studies.
(*) Copper and sulphur co-doped titanium oxide nanoparticles with enhanced catalytic and photocatalytic properties. Josefa Ortiz-Bustos, Santiago Gómez-Ruiz, Jaime Mazarío, Marcelo E. Domine, Isabel del Hierro and Yolanda Pérez. Catalysis Science & Technology, 2020, 10, 6511-6524. https://pubs.rsc.org/en/content/articlelanding/2020/cy/d0cy01041c/#!divAbstract
More information: Yolanda Pérez, Full professor at URJC & Senior Assistant Researcher, Advanced Porous Materials Unit, IMDEA Energy Institute, email@example.com