A Zn(II)/anthracene coordination polymer showing highly efficient photocatalytic Cr(VI) reduction in aqueous solution

Photocatalytic Reduction and Recognition of Cr(VI): New Zn(II)-Based Metal–Organic Framework as Catalytic Surface

“…The Zn­(II)–O bond lengths were found to be in the range 1.9186(17)–1.9489(16) Å, and Zn­(II)–N bond lengths were in the range 2.0229(17)–2.0369(17) Å (Table S2). Both the Zn­(II)–O and Zn­(II)–N bond lengths were in agreement well with the other reported Zn-based MOFs in the literature. − The deprotonated pamoic acid and bipyridine unit acted as a bidentate bridging ligand between the two Zn­(II) ions. The two carboxylate groups of pamoate unit coordinated with the two different Zn­(II) ions in monodentate fashion.…”

Recent Progress in the Development of MOF-Based Photocatalysts for the Photoreduction of Cr(VI)

“…The bipyridine-anthracene ligand acted as an efficient light sensitizer and transferred the photogenerated charges to the metal clusters through the LMCT process. In similar work, a Zn MOF with a one-dimensional (1D) chain structure was prepared using the ligand of BPEA . It exhibited an optical absorption edge at 670 nm, with a redshift compared to the ligand (i.e., BPEA) that can be attributed to the close π–π stacking interaction between the ligands in the MOF structure.…”

“…In similar work, a Zn MOF with a one-dimensional (1D) chain structure was prepared using the ligand of BPEA. 46 It exhibited an optical absorption edge at 670 nm, with a redshift compared to the ligand (i.e., BPEA) that can be attributed to the close π−π stacking interaction between the ligands in the MOF structure. It was proposed that the photogenerated electrons in the CB of the ligand reduced the Cr (VI) ions on the surface, whereas the photogenerated h + was consumed by methanol (hole scavenger).…”