Journal
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
Volume 139, Issue 44, Pages 15584-15587Publisher
AMER CHEMICAL SOC
DOI: 10.1021/jacs.7b08657
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Funding
- National Science Foundation [CHE-1653978]
- Microscopy Core Facility at Utah State University
- NSFC [21673072, 21333003, U1501501]
- Program of Shanghai Subject Chief Scientist [17XD1401400]
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Photocatalytic upgrading of crucial biomass -derived intermediate chemicals (i.e., furfural alcohol,5-hydroxymethylfurfural (HMF)) to value-added products (aldehydes and acids) was carried out on ultrathin CdS nanosheets (thickness similar to 1 nm) decorated with nickel (Ni/CdS). More importantly, simultaneous H-2 production was realized upon visible light irradiation under ambient conditions utilizing these biomass intermediates as proton sources. The remarkable difference in the rates of transformation of furfural alcohol and HMF to their corresponding aldehydes in neutral water was observed and investigated. Aided by theoretical computation, it was rationalized that the slightly stronger binding affinity of the aldehyde group in HMF to Ni/CdS resulted in the lower transformation of HMF to 2,5-diformylfuran compared to that of furfural alcohol to furfural. Nevertheless, photo catalytic oxidation of furfural alcohol and HMF under alkaline conditions led to complete transformation to the respective carboxylates with concomitant production of H-2.
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