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Figure 2. (A) Decorated metallic nanostructures may act as both a co-catalyst and a light-harvesting medium; (B) Time evolution of the methane photooxidation in the fixed-bed mode under full arc illumination with various initial CH4 concentrations; (C) Methane photooxidation activity under full arc illumination and a flow-gas mode with a gas flow rate of 25 mL·min-1. Reproduced with permission from Ref[15]. Copyright 2016, Springer Nature.