Enhanced photocatalytic H2 production performance of CdS hollow spheres using C and Pt as bi-cocatalysts

Photocatalytic H 2 production from water splitting is an effective method to solve energy crisis and environmental pollution simultaneously. Herein, carbon@CdS composite hollow spheres (C@CdS-HS) are fabricated via a facile hydrothermal using porous carbon (C-HS) as the template. The C@CdS-HS shows excellent photocatalytic -generation rate of 20.9 mmol h ?1 g (apparent quantum efficiency 15.3% at 420 nm), with 1.0 wt% Pt cocatalyst under simulated sunlight irradiation; this 69.7, 13.9, 3.9 times higher than that obtained pure CdS (CdS-HS), C@CdS-HS, CdS-HS/Pt, respectively. enhanced -evolution activity C@CdS-HS/Pt due synergistic effect C bi-cocatalyst. C-HS serves not only active site provider but also electron transporter reservoir. Moreover, has strong photothermal induced by near infrared light, which kinetically accelerates -production reaction. Additionally, underlying charge transfer pathway process C?HS revealed. This work highlights potential application C-HS-based nanocomposites in solar-to-chemical conversion. Carbon@CdS template, they show H2-production bi-cocatalysts.