Photocatalytic reduction of carbon dioxide in aqueous semiconductor suspensions

Light-Driven Heterogeneous Reduction of Carbon Dioxide: Photocatalysts and Photoelectrodes

“…92 Only with the rhodium and the copper were trace amounts of methane detected, suggesting that impurities in the SiC may be a key factor in the reduction of CO 2 .…”

A noble metal-free reduced graphene oxide–CdS nanorod composite for the enhanced visible-light photocatalytic reduction of CO2 to solar fuel

“…For example, CdS particles tend to aggregate, forming larger particles, which results in a reduced surface area and a higher recombination rate of photoinduced electron-hole pairs. 13 To solve these problems, many approaches have been proposed to enhance the photoreductive activity of CdS, such as preparing quantized CdS nanocrystallites, 16 depositing noble metals, 17 preparing colloidal CdS 18 and forming CdS-based composites. 15,19 It is well-known that photogenerated electrons play a key role in the photocatalytic reduction reaction.…”

Carbon dioxide photoconversion driven by visible-light excitation of small carbon nanoparticles in various configurations

“…The same approach was employed in the use of noble metal-doped carbon dots as photocatalysts [22]. In this study, the naked carbon nanoparticles in aqueous suspension was coated with silver (Ag 0 ) or gold (Au 0 ) in simple photolysis [14,31,32] for the resulting metal-coated carbon nanoparticles to serve as more effective photocatalysts. Experimentally for the Ag 0 coating, a stable aqueous dispersion of the carbon nanoparticles in the presence of AgNO 3 was photoirradiated with visible light (425-720 nm).…”