BrCF2CF2CH=CHCH2X(x=Cl, OAc, OH) reacted smoothly with alkynes in the presence of BrCo(dmgh)2Py/Zn, giving 4,4,5,5-tetrafluorocyclopentene derivatives in moderate yields.
Metal-organic frameworks(MOFs)have been tremendously used as photocatalysts for H_(2) generation in recent years.Lacking native active sites(so-called co-catalyst)for H_(2) generation motivates the incorporation of no...Metal-organic frameworks(MOFs)have been tremendously used as photocatalysts for H_(2) generation in recent years.Lacking native active sites(so-called co-catalyst)for H_(2) generation motivates the incorporation of noble metals and their molecular complexes,hydrogenase active site mimics into MOFs to promote H_(2)generation.We herein report an noble-metal-free photocatalytic H_(2) generation system consisting of Erythrosin B dye-sensitized MIL-101(Cr)as a light absorber and Ni(dmgH)_(2) as a co-catalyst.It is found that Ni(dmgH)_(2) can serve as an efficient co-catalyst to boost H_(2) generation in the presence of triethanolamine(TEOA)as an electron donor under visible light irradiation.The optimal MIL-101(Cr)/Ni(dmgH)_(2) hybrid(5 wt%Ni(dmgH)_(2))displays a hydrogen H_(2) rate of 45.5 mmol h^(-1),which is 10 times greater than the control sample without Ni(dmgH)_(2) loading.This paper provides a novel design route for active H_(2) generation systems by combining molecular complexes of earth-abundant metal and MOFs photocatalysts.展开更多
文摘BrCF2CF2CH=CHCH2X(x=Cl, OAc, OH) reacted smoothly with alkynes in the presence of BrCo(dmgh)2Py/Zn, giving 4,4,5,5-tetrafluorocyclopentene derivatives in moderate yields.
基金This work was financially supported by the National Natural Science Foundation of China(No.51572003)Anhui Provincial Natural Science Foundation(No.1508085ME105)+1 种基金the Project sponsored by SRF for ROCS,SEMTechnology Foundation for Selected Overseas Chinese Scholar,Ministry of Personnel of China.
文摘Metal-organic frameworks(MOFs)have been tremendously used as photocatalysts for H_(2) generation in recent years.Lacking native active sites(so-called co-catalyst)for H_(2) generation motivates the incorporation of noble metals and their molecular complexes,hydrogenase active site mimics into MOFs to promote H_(2)generation.We herein report an noble-metal-free photocatalytic H_(2) generation system consisting of Erythrosin B dye-sensitized MIL-101(Cr)as a light absorber and Ni(dmgH)_(2) as a co-catalyst.It is found that Ni(dmgH)_(2) can serve as an efficient co-catalyst to boost H_(2) generation in the presence of triethanolamine(TEOA)as an electron donor under visible light irradiation.The optimal MIL-101(Cr)/Ni(dmgH)_(2) hybrid(5 wt%Ni(dmgH)_(2))displays a hydrogen H_(2) rate of 45.5 mmol h^(-1),which is 10 times greater than the control sample without Ni(dmgH)_(2) loading.This paper provides a novel design route for active H_(2) generation systems by combining molecular complexes of earth-abundant metal and MOFs photocatalysts.
