Details

Autor(en) / Beteiligte

• Li, Xinze
• Ma, Jiliang
• Fu, Hongquan
• Liu, Zhendong
• Zhang, Junqiang
• Cui, Rui
• Guo, Yanzhu
• Yao, Shuangquan
• Sun, Runcang

Titel

RuS@CN-x with exposed (200) facet as a high-performance photocatalyst for selective C-C bond cleavage of biomass coupling with H-O bond cleavage of water to co-produce chemicals and H

Ist Teil von

• Green chemistry : an international journal and green chemistry resource : GC, 2023-04, Vol.25 (8), p.3236-3246

Erscheinungsjahr

2023

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• The selective photocatalytic C-C bond cleavage of biomass coupling with H-O bond cleavage of water for co-producing chemicals and H 2 is of great significance, but limited successes have been reported. In this study, a RuS 2 @CN-x photocatalyst with only exposed crystal face (200) was prepared by anchoring RuS 2 nanoparticles on carbon nitride (CN) nanosheets and successfully used in photocatalytic C-C bond cleavage of biomass-based sugars coupling with water splitting to co-generate lactic acid and hydrogen. Interestingly, the RuS 2 (200) crystal face combined with the interfacial synergism between CN and RuS 2 in RuS 2 @CN-x effectively improved visible light absorption and enhanced the transfer/separation efficiency of photo-generated carriers. The RuS 2 @CN-2 exhibited superior photocatalytic activity towards synchronous water splitting and biomass conversion to co-produce hydrogen (8698.3 μmol g −1 h −1 ) and lactic acid (91.5%). Furthermore, the experimental and DFT calculation results indicated that the exposed crystal face (200) of RuS 2 significantly enhanced the photocatalytic activity of RuS 2 @CN-2. Moreover, this reaction system not only has excellent recyclability but also displays excellent universality for small molecule biomass-derived monosaccharides and macromolecular xylan. This work provides a novel route to efficiently co-produce hydrogen and fine chemicals from photocatalytic C-C bond cleavage of biomass coupling with H-O bond cleavage of water. RuS 2 @CN-x with exposed (200) facet as a high-performance photocatalyst for selective C-C bond cleavage of biomass coupling with H-O bond cleavage of water to co-produce chemicals and H 2 .