Abstract
Photocatalytic splitting water is a new clean green technology that has become a research hotspot in the scientific community. Among them, cadmium sulfide (CdS) is a classic photocatalyst. But applications are limited due to photo-corrosion and fast electron-hole recombination. Herein, hollow CdS tubes with special morphology were successfully modified by simple vapor deposition of graphitic carbon nitride (CN). The obtained 1D binary heterojunction photocatalyst showed good photohydrolysis hydrogen production performance under visible light (λ ≥ 400 nm). The introduction of CN prevented photo-corrosion of CdS, so it also had great cycle performance. At the same time, the proper amount of CN deposition was studied. The most suitable sample (CN0.5-CdS) showed the best hydrogen release rate (392.84 μmol g−1 h−1) within 4 h. Finally, based on a series of analysis datas of photocatalysts, its special tubular structure and possible catalytic mechanism were further discussed.
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