Fig. 3: Effect of plasmonic photothermal and hot electrons on the dehydration reaction and Ea. | Nature Communications

Fig. 3: Effect of plasmonic photothermal and hot electrons on the dehydration reaction and Ea.

From: Plasmonic Ni-doped W18O49 with dual active sites drives efficient methanol dehydration to dimethyl ether

Fig. 3: Effect of plasmonic photothermal and hot electrons on the dehydration reaction and Ea.

a Photocatalytic DME generation rates and methanol conversion over Ni0.66-W18O49 under different light intensities, and thermocatalytic DME generation rates at the corresponding temperatures. b Surface temperatures of Ni0.66-W18O49 and its photocatalytic DME generation rates under different light irradiations (UV, Vis, UV-Vis, NIR, Vis-NIR, and UV-Vis-NIR, with a fixed intensity of 400 mW cm−2). Error bars correspond to the standard deviation determined from three independent measurements. c, d Arrhenius plots and the calculated Ea for methanol dehydration under different light irradiations (c) and AM 1.5 G light irradiation with different densities (200, 400, 600, 800, and 1000 mW cm−2) (d). e, f Continuous-flow reaction system (e) and DME production rates (f) over Ni0.66-W18O49 under concentrated natural solar light irradiation (the photocatalyst loading in the continuous-flow reaction system is 50 mg). Error bars correspond to the standard deviation determined from three independent measurements.

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