This review discusses photocatalytic CO2 conversion using defective TiO2, with emphasis on the mechanism, the role of defects on CO2 adsorption–activation and product selectivity, as well as challenges of defective TiO2 to produce solar fuels.
We demonstrated the use of magnesium nanoparticles (and bulk) to convert CO2 (pure & also from the air) to methane, methanol, formic acid and green cement without external energy within a few minutes, using only water as the sole hydrogen source.
We have synthesized
g-C3N4 decorated over
dendritic fibrous nanosilica (DFNS). The generation of C–N–Si
interfaces by coating each fiber of DFNS with g-C3N4 not only provided high surface area but also affected the
optical and electronic properties of the composite. The catalyst synthesis
reproducibility issue of g-C3N4 was resolved
using a vacuum-sealed quartz tube. The extended light absorption in
the visible region, enhanced lifetime of photogenerated charge carriers
due to the formation of interfaces between silica and g-C3N4 (confirmed by solid-state NMR), and increased surface
area result in the improved photocatalytic activity of DFNS/g-C3N4 for hydrogen generation and CO2 conversion.
Photocatalytic CO2 conversion is a promising process for the reduction of CO2 into useful chemicals and fuels using solar energy. In this work, we have synthesized potassium doped g-C3N4 coated...
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