Table 1 Photocatalytic conversions of CO2 by H2O using various photocatalysts.

From: Enhanced CO evolution for photocatalytic conversion of CO2 by H2O over Ca modified Ga2O3

Catalyst

Formation rates of products (µmol h−1)

Selec. toward CO (%)

Consumed e−/h+

H2

O2

CO

 

Bare Ga2O3

240.9

122.8

9.8

4

1.02

Ag/Ga2O3

248.3

172.7

102.1

29

1.01

Ag@Cr/Ga2O3

148.5

316.4

499.6

77

1.02

Ag@Cr/Ga2O3_Ca

176.5

448.2

794.2

82

1.08

  1. Photocatalyst powder: 0.5 g, reaction solution volume: 1.0 L, additive: 0.1 M NaHCO3, CO2 flow rate: 30 mL min−1, light source: 400-W high-pressure Hg lamp.
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