Praseodymium Oxide Improving Ag Loaded Calcium Titanate Photocatalyst for Carbon Dioxide Reduction by Water

Strategies to Improve the Activity of Silver–loaded Calcium Titanate Crystal Photocatalyst for Photocatalytic Reduction of Carbon Dioxide with Water

“…In the photocatalytic reaction, the Pr 6 O 11 layer consisting of Pr cations with the two valences (tri‐ and tetravalent states) is expected to be beneficial for electron transfer to Ag NPs and accelerates the surface reductive reaction (Figure 3C, Eq. 2) [31] . Construction of the electron transport path is an efficient method to increase the reductive reaction rate and also reduces recombination of electron hole pairs.…”

Surface gallium oxide hydroxide species adsorbing carbon dioxide to enhance the photocatalytic activity of silver-loaded calcium titanate for carbon dioxide reduction with water

“…Especially, an Ag/CTO photocatalyst was demonstrated to promote CO 2 reduction with water to form CO selectively. 3,4 So far, we have developed some modication strategies, for example, modication of an Ag NP cocatalyst with other metal oxides such as Co 3 O 4 5 and addition of a Pr 6 O 11 layer, 6 where they interacted with the CTO photocatalyst and Ag NPs and contributed to the electron transfer or stabilization of Ag NPs, and modication with a Ga 2 O 3 photoabsorber to provide additional photoexcited carriers to the Ag/CTO photocatalyst. 7 The adsorption of CO 2 on the photocatalytic surface is the important rst step of photocatalytic CO 2 reduction before the successive surface reaction with protons and photoexcited electrons to form CO and H 2 O.…”