A facile hydrothermal synthesis, adsorption kinetics and isotherms to Congo Red azo-dye from aqueous solution of NiO/graphene nanosheets adsorbent

作者：Rong Xinshan; Qiu Fengxian^*; Qin Jiao; Zhao Hao; Yan Jie; Yang Dongya

来源：Journal of Industrial and Engineering Chemistry, 2015, 26: 354-363.

DOI：10.1016/j.jiec.2014.12.009

• NiO/graphene
• Congo Red
• Adsorption
• Kinetic
• Isotherm

A series of NiO/graphene nanosheets adsorbents (NGNS) were synthesized by a facile hydrothermal method, and characterized by UV-vis, XRD, TG, TEM, HRTEM, Raman, SAED and XPS methods. The NGNS was applied to deal with wastewater solution containing Congo Red (CR); and adsorption efficiency attained 99.56% at optimum condition. The adsorption kinetic and isotherm of adsorbent toward CR were investigated. The results indicated that pseudo second-order kinetic model and the equilibrium data were well fitted by Redlich-Peterson model. The adsorbent can be separated from system effectively and easily. The prepared adsorbent has potential application for the wastewater treatment containing CR azo-dye.

• 出版日期2015-6-25
• 单位江苏大学