Efficient Degradation of Methylene Blue Using La-PTC-HIna/Ti3C2Tx MXene: Adsorption and Photocatalytic Degradation

Isonicotinic acid is a pyridine carboxylic compound that can be used as a linker to construct coordination complexes. Adding isonicotinic acid (HIna) to the metalorganic framework (MOF) enhanced the MOF surface area, pore volume, and pore size and increased its catalytic activity. Ti(3)C(2)Tx MXene nanosheet with excellent metal conductivity was also employed on MOF to optimize its functionality. This work aims to synthesize MOF modulated isonicotinic acid La-PTC-HIna and design the new materials: La-PTC/Ti(3)C(2)Tx MXene and La-PTC-HIna/Ti(3)C(2)Tx MXene hybrid, then apply them for methylene blue photodegradation. La-PTC-HIna, La-PTC/Ti(3)C(2)Tx MXene, and La-PTCHIna/Ti(3)C(2)Tx MXene were synthesized by the sonochemical method. MOF La-PTC-HIna has the highest methylene blue photocatalytic degradation activity than MOF La-PTC, Ti(3)C(2)Tx MXene, La-PTC/Ti(3)C(2)Tx MXene, and La-PTC-HIna/Ti(3)C(2)Tx MXene with degradation efficiency of 99.48% in 20 ppm methylene blue under visible irradiation for 210 min. This study reveals the La-PTC-HIna and La-PTC-HIna/Ti(3)C(2)Tx MXene as a new material that has the potential to remove methylene blue from an aqueous solution.