Figure 7. XRD pattern of recovered catalysts after the photocatalytic H2 production (reaction conditions in Figure 5) a=sample obtained from precipitate, co-catalyst formation by calcination; b= sample obtained from precipitate, co-catalyst formation by hydrogenation, c= sample obtained from precipitate, co-catalyst formation by hydrogenation, blank experiment, d= sample obtained from oxides, co-catalyst formation by calcination; e= sample obtained from oxides, cocatalyst formation by hydrogenation; f= GaN (commercial), co-catalyst formation by calcination, blank experiment.
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