Photocatalytic CO 2 reduction to CH 4 in continuous flow reactor using Fe 2 TiO 5 enhanced by magnetron sputtering-deposited CuO nanoparticles cocatalyst

Author(s)

dos Santos, Gustavo H. C. ; Goncalves, Renato V. ; Rossi, Liane M.

• Document type: Journal article
• Source: Materials Letters; v. 371, p. 4-pg., 2024-06-22.

Abstract

Fe 2 TiO 5 is a promising and underexplored material as a semiconductor photocatalyst for CO 2 reduction reaction (PCO 2 RR), aimed at mitigating greenhouse gas emissions. In this study, pure Fe 2 TiO 5 was synthesized via solvothermal method and subsequently calcined across temperatures ranging from 600 to 900 degrees C. The performance was evaluated within a PCO 2 RR under simulated sunlight, generating CH 4 as a single detectable product. Further enhancement was achieved by depositing CuO nanoparticles below 5 nm onto the Fe 2 TiO 5 surface using magnetron sputtering deposition. The yield of CH 4 increased from 0.032 to 0.042 mu mol. As far as we know, this marks the inaugural application of Fe 2 TiO 5 as a photocatalyst for CO 2 reduction. (AU)

• FAPESP's process: 22/15887-0 - Multi-user equipment approved in grant 2021/00675-4: gas chromatography
• Grantee: Liane Marcia Rossi
• Support Opportunities: Multi-user Equipment Program
• FAPESP's process: 14/50279-4 - Brasil Research Centre for Gas Innovation
• Grantee: Julio Romano Meneghini
• Support Opportunities: Research Grants - Research Centers in Engineering Program
• FAPESP's process: 20/15230-5 - Research Centre for Greenhouse Gas Innovation - RCG2I
• Grantee: Julio Romano Meneghini
• Support Opportunities: Research Grants - Research Centers in Engineering Program
• FAPESP's process: 21/00675-4 - Tying up materials for electrochemical energy storage and catalysis
• Grantee: Roberto Manuel Torresi
• Support Opportunities: Research Projects - Thematic Grants