抄録
The preparation of ferric oxide in montmorillonite (denoted as MT) was conducted with two kinds of methods: one is that a trinuclear iron complex (precursor) is loaded into the clay, followed by its calcination (denoted as Fe2O3/MT), and the other is the hydrolysis of ferric ion into hydrous ferric oxide (i.e., an amorphous ferric oxide) (denoted as HFO/MT). Both of the samples were prepared with a low loading of ferric oxide into the supporter. The polymorph of 5 wt. % Fe2O3/MT was assigned to the amorphous phase, similar to that of 5 wt. % HFO/MT; moreover, the specific surface areas of ferric oxide were almost constant in each case. When those photocatalysts of ferric oxide were applied to the photo-Kolbe reaction (i.e., methane formation from acetic acid), it was noted that the photocatalytic activity of amorphous ferric oxide for the methane formation is independent of the preparation procedures of the photocatalyst part.
