Abstract
In this research, a novel biodegradable cellulose acetate (CA)-based nanocomposite adsorbent filled with metal-organic framework-derived porous carbon (MOF-DPC) nanoparticles was fabricated through the phase inversion method for methylene blue (MB) removal from aqueous solution. The MOF-DPC nanoparticles were synthesized via one-step carbonization of MOF-5 at 1000 °C under an argon environment. The synthesized MOF-DPC nanoparticles were characterized by HR-TEM, SEM, BET, XRD, Raman, and FTIR analyses, while the fabricated CA/MOF-DPC adsorbent by FTIR and TGA analyses. The effects of various parameters such as MOF-DPC loading (0–2 wt%), solution pH (3–11), initial MB concentration (5–200 mg L−1), solution temperature (25–65 °C), and contact time (0–960 min) on decolorization behavior of the fabricated CA/MOF-DPC adsorbent were investigated. A high removal efficiency (87.72%) and an acceptable adsorption capacity (41.36 mg g−1) were achieved at the optimum conditions (2 wt% MOF-DPC loading, pH value of 11, MB concentration of 50 mg L−1, temperature of 65 °C and contact time of 6 h). The kinetic and equilibrium data were fitted well by the pseudo-second-order kinetic model (R2 = 0.9945) and the Freundlich adsorption isotherm model (R2 = 0.9886), respectively. The thermodynamic investigations confirmed that the adsorption is endothermic and spontaneous at higher temperatures. This study has recommended the fabricated CA/MOF-DPC nanocomposite as a promising adsorbent for the treatment of wastewaters.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
