Abstract
The design and syntheses of metal-organic cages(MOCs)based on polyoxometalates(POMs)build-ing blocks have attracted increasing attention due to their intriguing molecular architectures and physicochemical properties.In this work,we have successfully synthesized and systematically char-acterized a tetrahedral polyoxometalate-based organic cage(POC),K3Na17H12[(C4H6O6)6[Ni4(OH)3(A-α-SiW9O34)]4]-96H2O(Ni16L6(SiW9)4),using tritopic Ni4-substituted Keggin cluster(Ni4SiW9)as nodes and flexible L-(+)-tartaric acid ligands as linkers.The resulting POC tetrahedron has been firstly investigated as efficient catalyst for visible-light-driven hydrogen production,achieving a turnover number of 15,500 after 96-h photocatalysis.Such high catalytic performance of Ni16L6(SiW9)4 POC catalyst could be at-tributed to its unique cage structure,thereby offering more efficient catalytic component accessibility.In addition,spectroscopic analyses illustrated the photocatalytic mechanism and the structural stability of the TBA-Ni16L6(SiW9)4 catalyst during the photocatalytic process.
基金项目
国家自然科学基金(21871025)
国家自然科学基金(21831001)
Recruitment Program of Global Experts(Young Talents)()
BIT Excellent Young Scholars Research Fund()
NETL
NSTL
万方数据