Effective adsorption and removal of industrial dye from aqueous solution using mesoporous zinc oxide nanoparticles via metal organic frame work: equilibrium, kinetics and thermodynamic studies

Pollution industrial dyes is a serious environmental issue and successful purifying has thus far proven to be a difficult task. Therefore, in study, environmentally safe zinc oxide nanoparticles were synthesized through calcination of zeolitic imidazolate framework 7 at various temperatures for calcination 450 degrees C, 550 degrees C and 650 degrees C. The elimination of Congo red (CR) in wastewater samples was tested with good adsorption capability. Adsorption of CR using ZnO from aqueous solution. Scanning electron microscopy, Fourier-transform infrared spectroscopy, X- ray diffraction and the surface area and pore volume of ZnO were discovered during Brunauer-Emmett-Teller testing at 77 K to be 119.12 m(2).g(-1) and the total pore volume was 0.362 cm(3).g(-1). Adsorption at pH 3 was found the best for CR. Initial concentration and dosage, resulting in microporous surfaces that have a high potential to interact with and absorb CR. Adsorption tests demonstrated that ZnO had a good capability for removing CR (975 mg.g(-1)). However, after numerous reuse cycles, this performance was remained. The findings of the adsorption experiments demonstrated that the Langmuir equation for the adsorption isotherm and the pseudo-second-order model of the adsorption kinetics were compatible. Adsorption's activation energy was also found to be 24.7 kJ.mol(-1), demonstrating that chemisorption process. The adsorption process was calculated, and it was shown to be both endothermic and spontaneous also determine thermodynamic parameter Delta G degrees, Delta H degrees and Delta S degrees. The mesoporous ZnO adsorbent proved to be a simple and effective water purification. ZnO material has shown promise in the process of removing CR from aqueous solution.

Automated summary

In this study, environmentally safe zinc oxide nanoparticles were synthesized through calcination of zeolitic imidazolate framework 7. The capability of these nanoparticles to remove Congo red from wastewater samples was tested, and the results showed good adsorption performance. The nanoparticles demonstrated high adsorption capacity and remained effective even after multiple reuse cycles.