Adsorption behavior of methylene blue on amine-functionalized ordered mesoporous alumina
- 512 Downloads
Amine-functionalized ordered mesoporous alumina (NH2-OMA) was synthesized through a facile and reproducible method. Its organic dyes adsorption characteristics, including adsorption isotherms, adsorption kinetics, the stability and reusability of the adsorbents were investigated. This material exhibited strong affinity to methylene blue and extremely high adsorption capacity. The maximum adsorption capacity value reached 657.89 mg g−1. Adsorption kinetics was best described by the pseudo-second-order model. Equilibrium data were well fitted to the Langmuir isotherm model.
KeywordsMesoporous aluminium Amine Metylene blue Adsorption
This work was supported by the National Basic Research Program of China (973 Program, Grant No. 2011CB933700) of the Ministry of Science and Technology of China, the National Natural Science Foundation of China (Grant Nos. 51371162 and 51344007) and the Fundamental Research Funds for the Central Universities.