Fig. 2: Photoelectrochemical (PEC) performance of PbS-QD-based photoanodes. | Nature Communications

Fig. 2: Photoelectrochemical (PEC) performance of PbS-QD-based photoanodes.

From: Stable and efficient PbS quantum dot photoelectrodes enable photoelectrochemical hydrogen production without sacrificial agents

Fig. 2: Photoelectrochemical (PEC) performance of PbS-QD-based photoanodes.

a Linear sweep voltammetry (LSV) curves recorded at a scan rate of 5 mV s–1. b photocurrent density–time (Jph–t) curves for the as-prepared PbS-QD-based photoanodes under visible-light illumination (λ ≥ 420 nm). c Schematic illustration of the Ni/FM/PbS-QD photoanode used in the PEC water splitting system. d LSV curve of the Ni/FM/PbS-QD photoanode under chopped visible-light illumination (λ ≥ 420 nm). e Time-resolved H2 and O2 production, with the corresponding H2/O2 molar ratio indicated by the yellow arrow (right y-axis, blue), from the Ni/FM/PbS-QD photoanode under visible-light illumination (λ ≥ 420 nm). Error bars represent the standard deviation from five independent measurements. f Incident photon-to-current efficiency (IPCE) spectrum of the Ni/FM/PbS-QD photoanode recorded under monochromatic light illumination (300–950 nm), together with the corresponding integrated Jph, indicated by the yellow arrow (right y axis, blue).

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