Amino modified mesostructured silica nanoparticles for efficient adsorption of methylene blue.

A H Karim, A A Jalil, S Triwahyono, S M Sidik, N H N Kamarudin, R Jusoh, N W C Jusoh, B H Hameed

Ibnu Sina Institute for Fundamental Science Studies, Faculty of Science, Universiti Teknologi Malaysia, 81310 UTM Johor Bahru, Johor, Malaysia.

Journal of colloid and interface science 2012 Nov 15

filter terms:

In this work, mesostructured silica nanoparticles (MSN(AP)) with high adsorptivity were prepared by a modification with 3-aminopropyl triethoxysilane (APTES) as a pore expander. The performance of the MSN(AP) was tested by the adsorption of MB in a batch system under varying pH (2-11), adsorbent dosage (0.1-0.5 g L(-1)), and initial MB concentration (5-60 mg L(-1)). The best conditions were achieved at pH 7 when using 0.1 g L(-1) MSN(AP) and 60 mg L(-1)MB to give a maximum monolayer adsorption capacity of 500.1 mg g(-1) at 303 K. The equilibrium data were evaluated using the Langmuir, Freundlich, Temkin, and Harkins-Jura isotherms and fit well to the Freundlich isotherm model. The adsorption kinetics was best described by the pseudo-second order model. The results indicate the potential for a new use of mesostructured materials as an effective adsorbent for MB. Copyright © 2012 Elsevier Inc. All rights reserved.

Citation

A H Karim, A A Jalil, S Triwahyono, S M Sidik, N H N Kamarudin, R Jusoh, N W C Jusoh, B H Hameed. Amino modified mesostructured silica nanoparticles for efficient adsorption of methylene blue. Journal of colloid and interface science. 2012 Nov 15;386(1):307-14