Construction of EI/P25/Zr-MOFs Heterojunction and Its Performance for Photocatalytic Hydrogen Production
UiO-66-NH2(NUO)has been used for photocatalytic hydrogen generation due to its excellent water stability,but its hydrogen production efficiency still needs to be improved.In this paper,EI/P25/NUO heterojunction was synthesized by adding 2-(2-fluorenyl)-4,5-1-bromodiphenyl-imidazole(EI)and P25 in NUO precursor solution via hydrothermal method.Compared with single Zr-MOFs and binary EI/NUO,the visible-light-driven photocatalytic hydrogen production rate of the EI/P25/NUO heterojunction can reach 6530.60 μmol·g-1·h-1,which is 304 times and 34 times higher than that of NUO and EI/NUO,respectively.This is because the introduction of EI can effectively improve the concentration of photogenerated carriers in the system,and the electron transport layer P25 can promote the transfer of photogenerated electrons generated by EI to NUO,reduce the recombination probability of photogene-rated carriers,and further improve the performance of photocatalytic water decomposition for hydrogen production.
EI/P25/NUO heterojunctionPhotocatalytic hydrogen productionCharge transfer
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