Carbon-Supported Nanocomposite Synthesis, Characterization, and Application as an Efficient Adsorbent for Ciprofloxacin and Amoxicillin
Sadia M. Ahmad I. Aziz S. Khan R. Zahoor M. Ullah R. Ali E.A.
13 February 2024American Chemical Society
ACS Omega
2024#9Issue 66815 - 6827 pp.
The existence of antibiotics in the environment has recently raised serious concerns about their possible hazards to human health and the water ecosystem. In the current study, an activated carbon-supported nanocomposite, AC-CoFe2O3, was synthesized by a coprecipitation method, characterized, and then applied to adsorb different drugs from water. The synthesized composites were characterized by using energy-dispersive X-ray spectroscopy, Fourier transform infrared spectroscopy, Brunauer-Emmett-Teller plots, and scanning electron microscopy. The adsorption of both Ciprofloxacin (Cipro) and Amoxicillin (Amoxi) antibiotics on the composite followed the pseudo-second-order kinetic model (R2 = 0.9981 and 0.9974 mg g-1 min-1, respectively). Langmuir isotherm was the best-fit model showing 312.17 and 217.76 mg g-1 adsorption capacities for Ciprofloxacin and Amoxicillin, respectively, at 333 K. The negative Gibbs free energy (ΔG°) specified the spontaneity of the method. The positive change in the enthalpy (ΔH) indicated that the adsorption process was assisted by higher temperatures. The different optimized parameters were pH, contact time, adsorbent weight, concentration, and temperature. The maximum adsorption of Cipro was found to be 98.41% at pH 12, while for Amoxi, it was 89.09% at pH 2 at 333 K. The drugs were then successfully determined from natural water samples at optimized conditions using these nanocomposites.
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Department of Chemistry, University of Malak, Chakdara, 18800, Pakistan
Department of Chemistry and Chemical Technology, Al-Farabi Kazakh National University, Almaty, 050040, Kazakhstan
Department of Electrical Engineering, Kwangwoon University Seoul, Seoul, 54047, South Korea
Department of Biochemistry, University of Malak, Khyber Pakhtunkhwa, Chakdara, 18000, Pakistan
Department of Pharmacognosy, College of Pharmacy, King Saud University, Riyadh, 11451, Saudi Arabia
Department of Pharmaceutical Chemistry, College of Pharmacy King Saud University Riyadh, Riyadh, 11451, Saudi Arabia
Department of Chemistry
Department of Chemistry and Chemical Technology
Department of Electrical Engineering
Department of Biochemistry
Department of Pharmacognosy
Department of Pharmaceutical Chemistry
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