THE PRESENCE OF ANTIBIOTICS IN WATER DISCHARGES REPRESENTS A HAZARD FOR THE ECOSYSTEMS, AS IT COULD AFFECT THE BIOTA EQUILIBRIUM AT THE MICRO AND MACROSCALES. CONSEQUENTLY, IT IS CRUCIAL TO DEVELOP EFFECTIVE ADSORPTION AND OXIDATION TECHNOLOGIES TO REMOVE ANTIBIOTICS FROM WATER. HEREIN, WE ASSESSED THE EFFECTIVITY AND STABILITY OF A METAL ORGANIC FRAMEWORK-BIOMASS HYBRID (MIL-53(AL)@RH) FOR THE REMOVAL OF OXYTETRACYCLINE (OTC) VIA ADSORPTION AND PHOTOCATALYTIC DEGRADATION. UNDER EQUILIBRATED CONDITIONS, THE HYBRID RETAINED 165 MG 1 OTC. WHEN ADSORPTION AND PHOTOCATALYTIC DEGRADATION WERE ARRANGED IN TANDEM, THE SYSTEM REMOVED 99 % OF OTC WITH A DOSE OF 2.83 MG H2O2/MG OTC. THE THERMO-KINETIC INTERPRETATION OF THE ADSORPTION MEASUREMENTS WAS WELL DESCRIBED BY SIP´S ISOTHERM AND PSEUDO-SECOND KINETIC MODELS, WHICH ALONG WITH THE HEAT OF ADSORPTION (? 104.8 KJ MOL? 1) SUGGEST A CHEMICAL INTERACTION BETWEEN THE OTC AND MIL-53(AL)@RICE HUSK HYBRID ACTIVE CENTRES. THE MIL-53(AL)@RH HYBRID DEMONSTRATED A REMARKABLE STABILITY WITH AN OTC REMOVAL ABOVE 90 % AFTER 10 OPERATIONAL CYCLES. MOREOVER, PYROLYSIS OF OTC-SATURATED HYBRID LED TO A CARBONACEOUS STRUCTURE WHICH DEMONSTRATED AN OUTSTANDING OTC ADSORPTION CAPACITY (221 MG G? 1 OTC). THE RESULTS DEMONSTRATE THAT THE MIL-53(AL)@RH HYBRID PRESENTS A SIGNIFICANT PROSPECT FOR COMBINED ADSORPTION-PHOTOCATALYTIC TREATMENT OF WATER BODIES CONTAMINATED WITH ANTIBIOTICS.

MOF@BIOMASS LAYERED HYBRIDS WERE DESIGNED THROUGH IN SITU GROWTH FROM RICE HUSK (RH) AND MICROWAVE-ASSISTED SYNTHESIZED MIL-53(AL) PARTICLES THAT ENABLE THE REDUCTION OF REACTION TIMES. THE SYNTHESIS PROCESS INCLUDED STEPS TO PRETREAT RH, AL ADSORPTION ON RH, AND THEN MIL-53(AL) IN-SITU GROWTH REACTION AT 125 ?C FOR 60 MIN AND 200 W IRRADIATION POWER. THE RESULTING HYBRID (MIL-53(AL)@RH) AND ITS PARENT SEPARATE MATERIALS WERE CHARACTERIZED USING TGA, SEM, FTIR, XRD, AMONG OTHERS. MIL-53(AL)@RH SHOWED HIGH CRYSTALLINITY IN THE HYBRIDIZED MOF PARTICLES, THERMAL DECOMPOSITION PHASES, AND FUNCTIONAL GROUPS (AL?O, O?H, C??O, AND C??C). THE HYBRID PARTICLES ALLOW AN EASY SEPARATION DURING HETEROGENEOUS PROCESSING DUE TO THEIR 400 TIMES LARGER SIZE COMPARED TO MIL-53(AL) CRYSTALS. THE PROPERTIES OF THE LAYERED HYBRIDS FOR REMOVAL OF OXYTETRACYCLINE (OTC),