Photodegradation of Some Organic Dyes over Two Metal–Organic Frameworks with Especially High Efficiency for Safranine T

Two new networks, namely, {[Cd(bpba)(H 2 bptc) 1/2 ·H 2 O]} n ( 1 ), {[Co(bpba)(bdc) 1/2 ]} n ( 2 ), where Hbpba = 3,5-bis(pyridin-4-ylmethoxy)benzoic acid, H 4 bptc = 3,3′,5,5′-biphenyltetracarboxylate, H 2 bdc = 1,4-benzenedicarboxylate, have been synthesized hydrothermally and characterized. Compound 1 is a three-dimensional net with a rare jea topology. The flexible pyridyl arms may afford a dimension extension in the crystal structure. While for compound 2 the flexible pyridyl arms are not involved in coordination, the Co(II) paddle-wheel secondary building units are bridged by the mixed ligands, bpba – and bdc 2–, to furnish a two-dimensional layer. In addition, their heterogeneous catalytic oxidation activities toward methyl orange, methyl blue, neutral red, methylene blue, and safranine T (ST) in the presence of H 2 O 2 are investigated in aqueous solution. The results suggested that the photocatalytic efficiency of ST is found to be 100% for MOF- 2 .