Investigation of the adsorption of methyl orange by Ag-TiO2/GO nanocomposite

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Mohammadi Robab; MASSOUMI BAKHSHALI; SADEGHI VAHIDEH

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Title

Investigation of the adsorption of methyl orange by Ag-TiO2/GO nanocomposite

Author(s)

Mohammadi Robab | MASSOUMI BAKHSHALI | SADEGHI VAHIDEH | Issue Writer Certificate

Keywords

Ag-TiO2/GO nanocompositeQ1

Organic pollutantQ1

Adsorption modelsQ1

Thermodynamic investigationQ1

Abstract

In this study, Ag-TiO2 and Ag-TiO2/GO nanomaterials were prepared and then characterized via different analysis methods such as XRD, SEM, EDX, Raman, and BET. The adsorption capacity of prepared samples was investigated by removal of methyl orange, as a model Organic pollutant, from aqueous solutions. Based on results, Ag-TiO2-GO nanocomposite demonstrated an excellent activity over Ag-TiO2 sample. To understand the nature of the adsorption process, the equilibrium adsorption isotherms were studied. Based on results, for Ag-TiO2 and Ag-TiO2/GO, Freundlich and Langmuir isotherm models with a correlation coefficient of 0. 989 and 0. 993 fitted the experimental data, respectively. According to the Langmuir isotherm model, the maximum adsorption capacity of Ag-TiO2/GO nanocomposite for adsorption of methyl orange was about 69. 44 mg/g, which was about 3 times the adsorption capacity of Ag-TiO2. Furthermore, negative Δ G0 and Δ H0 values resulted from Thermodynamic investigation suggested that the adsorption of methyl orange onto Ag-TiO2/GO nanocomposite was simultaneous and exothermic in nature, respectively.

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APA: Copy

Mohammadi, Robab, MASSOUMI, BAKHSHALI, & SADEGHI, VAHIDEH. (2018). Investigation of the adsorption of methyl orange by Ag-TiO2/GO nanocomposite. NASHRIEH SHIMI VA MOHANDESI SHIMI IRAN (PERSIAN), 37(1 ), 113-124. SID. https://sid.ir/paper/26109/en

Vancouver: Copy

Mohammadi Robab, MASSOUMI BAKHSHALI, SADEGHI VAHIDEH. Investigation of the adsorption of methyl orange by Ag-TiO2/GO nanocomposite. NASHRIEH SHIMI VA MOHANDESI SHIMI IRAN (PERSIAN)[Internet]. 2018;37(1 ):113-124. Available from: https://sid.ir/paper/26109/en

IEEE: Copy

Robab Mohammadi, BAKHSHALI MASSOUMI, and VAHIDEH SADEGHI, “Investigation of the adsorption of methyl orange by Ag-TiO2/GO nanocomposite,” NASHRIEH SHIMI VA MOHANDESI SHIMI IRAN (PERSIAN), vol. 37, no. 1 , pp. 113–124, 2018, [Online]. Available: https://sid.ir/paper/26109/en

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