Structure and photocatalytic performance of a new metal-organic framework based on [Zn(TBTC)(2,6-pydc)]n

Copper mixed-triazolate frameworks featuring the thiophene-containing ligand towards enhanced photodegradation of organic contaminants in water

By using a thiophene-containing triazole ligand -3,5-di(thiophen-2-yl)-1H-1,2,4-triazole (3,5-Th₂-tzH) and 3,5-diphenyl-1H-1,2,4-triazole (3,5-Ph₂-tzH) in different molar ratio in the reactant, copper(I) mixed-triazolate frameworks CuMtz-1 {[Cu₈(3,5-Ph₂-tz)_6-x(3,5-Th₂-tz)_x](BF₄)₂(CH₃OH)₃} (x = 0.5 for CuMtz-1a and 1.1 for CuMtz-1b) were firstly synthesized and characterized by PXRD, IR, ¹H NMR, SEM, TG and UV-vis DRS. They have been evaluated as photocatalysts for the degradation of organic pollutants in water. It was found that the rate constants towards the degradation of both traditional and emerging organic contaminants over CuMtz-1b were significantly improved, i.e. by 160% for methyl orange, 210% for rhodamine B, 80% for methyl blue and 180% for sulfasalazine in comparison with that catalyzed over the parent MOF CuTz-1 {[Cu₈(3,5-Ph₂-tz)₆](BF₄)₂(CH₃OH)₃} under Xe lamp irradiation in the absence of H₂O₂. More importantly, the degradation efficiency of methyl orange and sulfasalazine by CuMtz-1b without the addition of H₂O₂ was quite comparable with that by CuTz-1 with the addition of H₂O₂ under both Xe lamp irradiation and natural sunlight. The enhancement on the degradation efficiency can be attributed to the increased light absorption ability and the change of the band structure caused by the incorporation of thiophene-containing triazole ligand.

Syntheses and photocatalytic properties of three new d10-based coordination polymers: effects of metal centres and ancillary ligands

Three d¹⁰-based coordination polymers with three different nitrogen-based ancillary ligands have been synthesized and their photocatalytic properties were explored in the decomposition of methyl violet.

A metal–organic framework based multifunctional catalytic platform for organic transformation and environmental remediation

Given the need for an efficient reaction platform, a multifunctional material has been developed through the integration of iodine into a Cd²⁺ based MOF as a new catalytic system for organic transformation.

High efficiency of mechanosynthesized Zn-based metal–organic frameworks in photodegradation of congo red under UV and visible light

Three zinc(ii) MOFs containing azine-functionalized pores were studied for degradation of congo red from aqueous solutions under UV and/or visible light irradiation without auxiliary oxidants such as H₂O₂.