Journal
CARBOHYDRATE POLYMERS
Volume 250, Issue -, Pages -Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.carbpol.2020.116909
Keywords
CdS; MoS2; Bacterial cellulose scaffold; Photocatalyst; H-2 production
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Funding
- Chinese Thousand Talents Plan Program
- Wuhan University of Technology
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The conversion of sunlight into H-2 by noble-metal-free photocatalysts is a promising approach for the production of easy-to-store chemical energy. For this purpose, higher efficiency is achieved by photocatalysts with heter-ojunctions preventing fast charge recombination. Most processes for the synthesis of high-performance heterojunction photocatalysts require solvents harmful to living organisms. Here, berry-shaped (b)-CdS/MoS2 particles were fabricated instead by a hydrothermal process where non-toxic bacterial cellulose was used to mold b-CdS into nanostructures with enhanced spatial arrangement. Subsequently, MoS2 was combined with b-CdS resulting in a composite with suitable shape and intimate semiconductor contacts beneficial for charge transfer. The photocatalytic H-2 evolution (PHE) of b-CdS/1%MoS2 was 63.59 mmol g(-1) h(-1). It was 61.1 times, 397 times, and 10.2 times higher than PHE with b-CdS, CdS fabricated without BC scaffold, and b-CdS doped with Pt, respectively. These results show the high potential of b-CdS/MoS2 and the associated synthesis method for PHE.
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