Figure 3: Photocatalytic performance and spectroscopy/(photo)electrochemical characterization. | Nature Communications

Figure 3: Photocatalytic performance and spectroscopy/(photo)electrochemical characterization.

From: Ti3C2 MXene co-catalyst on metal sulfide photo-absorbers for enhanced visible-light photocatalytic hydrogen production

Figure 3

(a) A comparison of the photocatalytic H2-production activities of CT0, CT0.05, CT0.1, CT2.5, CT5, CT7.5, Ti3C2 NPs, Pt–CdS, NiS–CdS, Ni–CdS and MoS2–CdS. The error bars are defined as s.d. (b) Ultraviolet-visible diffuse reflectance spectra of CT0, CT2.5 and Ti3C2-E. The insets show the colours of all the samples as well as the ultraviolet-visible absorbance spectrum and picture of the Ti3C2 NPs aqueous solution. (c) Time-resolved PL spectra of CT0 and CT2.5. (d) EIS Nyquist plots of CT0 and CT2.5 electrodes measured under the open-circle potential and visible-light irradiation in 0.5 M potassium phosphate buffer (pH=7) solution. The inset shows the transient photocurrent responses of CT0 and CT2.5 electrodes in 0.2 M Na2S+0.04 M Na2SO3 mixed aqueous solution under visible-light irradiation.

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