169
Secondly, the processing mechanism of photocatalytic CO 2 reduction according
to a complicated radical mechanism comprising possible elementary steps was also
proposed (Subrahmanyam et al. 1999; Zemanová et al. 2007; Habisreutinger et al.
2013). In general, this processing mechanism is similar to the above pathway with
the formation of C 1 -products step by step (CO 2 → HCOOH → HCHO → CH 3 OH
→ CH 4 ), but there are two pathways via formaldehyde (I) and carbene (II) to proFig. 6.4 Pathway for HCOOH, HCHO, and CH 3 OH formation from CO 2 on photocatalysts.
(Adapted with permission from Subrahmanyam et al. (1999); Habisreutinger et al. (2013))
6 Conversion of Carbon Dioxide into Formaldehyde
Secondly, the processing mechanism of photocatalytic CO 2 reduction according
to a complicated radical mechanism comprising possible elementary steps was also
proposed (Subrahmanyam et al. 1999; Zemanová et al. 2007; Habisreutinger et al.
2013). In general, this processing mechanism is similar to the above pathway with
the formation of C 1 -products step by step (CO 2 → HCOOH → HCHO → CH 3 OH
→ CH 4 ), but there are two pathways via formaldehyde (I) and carbene (II) to proFig. 6.4 Pathway for HCOOH, HCHO, and CH 3 OH formation from CO 2 on photocatalysts.
(Adapted with permission from Subrahmanyam et al. (1999); Habisreutinger et al. (2013))
6 Conversion of Carbon Dioxide into Formaldehyde