Amir Vahid - Research institute of petroleum industry, Tehran, Iran.
Majid Abdous - Faculty of chemistry, Amirkabir University of Technology, Tehran, Iran.
Shahnaz Nayyeri - Faculty of chemistry, Amirkabir University of Technology, Tehran, Iran.

The effect adsorption of cobalt-phthalocyanine-3,4’,4 ,4 ’-tetrasulfonicacid tetrasodium salt [Co(tsPc)-4•4Na+] onto UVM-7/Ag mesoporous material was investigated. In addition, X-ray diffraction (XRD), scanning electron microscopy (SEM), and nitrogen adsorptiondesorption measurement were used to examine the morphology and themicrostructure of the obtained composite. Various parameters including solution adsorbent dosage, contact time, initial dye concentration and temperature were systematically studied. Equilibrium data fitted well the Langmuir models; moreover, the fitness suggests that the adsorption be monolayer and physical in nature. Kinetic studies showed that the adsorption process could be better described by the Lagergren pseudosecond- order models. Thermodynamic constant values (ΔG < 0, ΔH<0 and ΔS< 0) demonstrated that the adsorption reactions of Co(tspc)-4 onto UVM-7/Ag were feasible, spontaneous, and exothermic under the examined conditions.

Adsorption,Aqueous,Dye,Isotherm,Mesoporous silica,Kinetics,,