A novel Psidium guajava and Cerium-MOF based dual-responsive bio-composite for the synchronous adsorptive removal and fluorescence detection of tetracycline antibiotics

The apprehensions about water contamination conduced by tetracycline antibiotics have raised serious concerns in scientific community worldwide. The researchers are intensively looking for materials that are sustainable and extend dual applicability in removal as well as detection of these contaminants. However, in this pursuit, fabrication of novel materials is still a great challenge. In this vein, inspired by the prodigious union of MOF and biobased materials, as enunciated by literature reports, present study unveils the fabrication of a novel dual responsive Psidium Guajava and Cerium-MOF based bio-composite for simultaneous adsorption and fluorescence detection of tetracycline antibiotics. The fabricated Ce-MOF/0.5-GLP composite displayed excellent adsorption potential for removal of TCs within a very short initial time duration and rendered high adsorption capacities i.e. 81.30, 75.18 and 63.69 mg g-1 for DC, MC and TC, respectively. Conjointly, the fabricated bio-based Ce-MOF/0.5-GLP composite was engaged for selective fluorescence detection of TCs. The sensor exhibited exquisite selectivity and sensitivity for detection of TCs with low detection limit values i.e. 94.3 nM, 71.4 nM and 74.2 nM for DC, MC and TC, respectively. In light of the aforementioned findings, the developed composite illustrates a workable and realistic method for dealing with TCs via removal and detection.