TY  - JOUR
A1  - Suhaimi, N.A.A.
A1  - Umar, M.K.H.
A1  - Lau, H.L.H.
A1  - Roslan, N.N.
A1  - Lim, J.-W.
A1  - Hobley, J.
A1  - Nur, M.
A1  - Usman, A.
JF  - Reaction Kinetics, Mechanisms and Catalysis
UR  - https://www.scopus.com/inward/record.uri?eid=2-s2.0-85183707363&doi=10.1007%2fs11144-023-02564-z&partnerID=40&md5=9d892e2c1838fd68d11722151dc7eec9
EP  - 1123
VL  - 137
Y1  - 2024///
N2  - Photocatalytic degradation of antibiotic rifampicin (RIF) in aqueous solution, employing 100-nm sized anatase TiO2 nanoparticles (NPs) as a catalyst, under 365-nm light irradiation (0.28 mW cmâ??2) was investigated. The direct photolysis and adsorptive removal of the ansamycin antibiotic were found to be negligibly inefficient. The experimental data suggest that photocatalysis efficiently degrades RIF, and the effect of irradiation time, catalyst dosage, pH of medium, and temperature was elucidated. The optimum photocatalytic degradation occurred in the colloidal mixture of 30.38 μM RIF solution and 10 mg TiO2 NPs at pH 5.63. The activation energy was estimated to be 1.585 ± 0.079 kJ molâ??1. The photocatalytic degradation kinetics of the antibiotic followed the Langmuirâ??Hinshelwood model with the rate constant of 0.016 ± 0.002 minâ??1, and the additional of a small amount of H2O2 accelerates the photocatalytic process. The degradation pathway was discussed based on vibrational spectroscopic data of RIF and its by-products. Overall, the findings in this study suggest that photocatalysis employing anatase TiO2 NPs under UV light irradiation is a promising approach for the degradation of antibiotics and other pharmaceuticals in wastewater treatment plants. Graphical abstract: (Figure presented.) © Akadémiai Kiadó, Budapest, Hungary 2024.
IS  - 2
N1  - cited By 1
ID  - scholars19763
SP  - 1105
TI  - An insight into the photocatalytic degradation of the antibiotic rifampicin by titanium dioxide nanoparticles in aqueous solution under UV light irradiation
KW  - Activation energy; Catalysts; Irradiation; Photocatalytic activity; Photodegradation; Photolysis; Rate constants; Sols; TiO2 nanoparticles; Titanium dioxide; Wastewater treatment
KW  -  Adsorptive removal; Anatase TiO 2; Direct photolysis; Light irradiations; Pharmaceutical wastes; Photocatalytic degradation; Rifampicin; Titanium dioxide nanoparticles; UV-light irradiation; ]+ catalyst
KW  -  Antibiotics
AV  - none
ER  -