An Artificial Photosynthesis System Based on Ti/TiO2 Coated with Cu(II) Aspirinate Complex for CO2 Reduction to Methanol

Author(s)

Stulp, Simone ; Cardoso, Juliano C. ; de Brito, Juliana Ferreira ; Flor, Jader Barbosa S. ; Galvao Frem, Regina Celia ; Sayao, Fabiana Avoilo ; Boldrin Zanoni, Maria Valnice

• Document type: Journal article
• Source: ELECTROCATALYSIS; v. 8, n. 3, p. 279-287, MAY 2017.
• Web of Science Citations: 5

Abstract

A novel copper(II) aspirinate complex easily deposited onto nanotubes of Ti/TiO2 was successfully employed in the conversion of CO2 to methanol through the use of UV-Vis irradiation coupled to a bias potential of -0.35 V vs saturated calomel electrode. An average concentration of 0.8 mmol L-1 of methanol was obtained in 0.1 mol L-1 of sodium sulfate saturated with CO2 using a self-organized Ti/TiO2 nanotubular array electrode coated with a {[}Cu-2(asp)(4)] complex. The influence exerted by CO2 and the complex over the behavior of photocurrent vs potential curves is discussed. Furthermore, a complete investigation of all parameters that tend to influence the global process of methanol production by the photoelectrocatalytic method such as applied potential, electrolyte, and time is also thoroughly presented. (AU)

• FAPESP's process: 15/18109-4 - Contribution of Nanostructured Materials in Electroanalysis of pharmaceuticals and dyes, in the oxidation and reduction photoeletrocatalytic process of Inorganic and Organic Pollutants and Water Disinfection.
• Grantee: Maria Valnice Boldrin
• Support Opportunities: Regular Research Grants
• FAPESP's process: 13/25343-8 - Simultaneous Oxidation of Organic Compounds in Wastewater Petroleum and Reduction of Dissolved CO2 by Photoelectrocatalysis
• Grantee: Juliana Ferreira de Brito
• Support Opportunities: Scholarships in Brazil - Doctorate