Photocatalytic Reduction of CO₂ Using Cu/S-TiO₂ Prepared by Electroless Plating Method

Abstract:

The photocatalytic reduction of CO₂ could be achieved over Cu/S-TiO₂ under UV and visible light irradiation. S-TiO₂ was fabricated via calcination of TiO₂ precursor and thiourea, Cu species were plated on the surface of S-TiO₂ by electroless plating method. XRD revealed that S-TiO₂ was anatase phase, UV-Vis absorption spectrum showed an excellent visible light absorption of Cu/S-TiO₂. Cu species plated on S-TiO₂ by electroless plating method could facilitate the photogenerated charges capture, separation and transfer. The products of CO₂ photocatalytic reduction involved gas phase of methane, carbon monoxide and hydrogen, and liquid phase of methanol, formic acid and acetic acid. The in-situ IR spectra indicated that the OH radical acted as an intermediate participating in the photocatalytic reaction.

• Periodical: Advanced Materials Research (Volumes 233-235)
• Pages: 589-595
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.233-235.589
• Online since: May 2011
• Authors: Zheng Wang, Fen Fen Li, Cheng Yang, Wen Yu Zhang, Jin Hu Wu
• Keywords: CO₂, Cu/S-TiO₂, Electroless Plating (EP), Photocatalytic Reduction

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