Biomass photorefinery to produce fuels and valuable chemicals is a promising approach to alleviating the energy crisis and achieving carbon neutrality.However,precisely modulating the photocatalytic conversion of biom...Biomass photorefinery to produce fuels and valuable chemicals is a promising approach to alleviating the energy crisis and achieving carbon neutrality.However,precisely modulating the photocatalytic conversion of biomass into value-added chemicals is still challenging.Here we demonstrate a feasible strategy to selectively produce arabinose via oriented glucose oxidation to gluconic acid,followed by the decarboxylation process for C1-C2 bond cleavage.To realize this process,gold nanoparticles(Au NPs)modified carbon nitride(AuCN)is rationally designed to regulate the electron transfer behavior of pristine carbon nitride from a two-electron pathway to a single-electron pathway.This allows selective production of superoxide(·O_(2)^(-))from oxygen reduction reaction which triggers glucose oxidation into gluconic acid.In addition,the arabinose production is synergistically promoted by the improved charge separation efficiency and extended visible-light absorption via localized surface plasmon resonance(LSPR)of Au nanoparticles.This work demonstrates an example of a mechanism-guided catalyst design to improve biofuels/chemicals production from biomass photorefinery.展开更多
基金supported by the Canada First Research Excellence Fund(CFREF)。
文摘Biomass photorefinery to produce fuels and valuable chemicals is a promising approach to alleviating the energy crisis and achieving carbon neutrality.However,precisely modulating the photocatalytic conversion of biomass into value-added chemicals is still challenging.Here we demonstrate a feasible strategy to selectively produce arabinose via oriented glucose oxidation to gluconic acid,followed by the decarboxylation process for C1-C2 bond cleavage.To realize this process,gold nanoparticles(Au NPs)modified carbon nitride(AuCN)is rationally designed to regulate the electron transfer behavior of pristine carbon nitride from a two-electron pathway to a single-electron pathway.This allows selective production of superoxide(·O_(2)^(-))from oxygen reduction reaction which triggers glucose oxidation into gluconic acid.In addition,the arabinose production is synergistically promoted by the improved charge separation efficiency and extended visible-light absorption via localized surface plasmon resonance(LSPR)of Au nanoparticles.This work demonstrates an example of a mechanism-guided catalyst design to improve biofuels/chemicals production from biomass photorefinery.
