Methylene blue adsorption on graphene oxide

Chin Hua Chia, Nur Fazlinda Razali, Sajab Mohd Shaiful, Sarani Zakaria, Nay Ming Huang, Hong Ngee Lim

Research output: Contribution to journalArticle

15 Citations (Scopus)

Abstract

In this study, graphene oxide (GO), produced using the simple Hummer's method, was used as adsorbent to remove methylene blue (MB) from aqueous solution. Characterizations using transmission electron microscope (TEM) and Fourier transform infrared (FTIR) spectroscopy were carried out on the GO before the MB adsorption experiments. The adsorption kinetics and isotherm studies were conducted under different conditions (pH = 3-7 and MB concentration = 100-400 mg/L) to examine the adsorption efficiency of the GO towards MB in aqueous solution. The adsorption kinetics data were analyzed using different kinetic models to investigate the adsorption behavior of MB on GO. The obtained results showed that the maximum adsorption capacity of the GO towards MB can achieve up to ~700 mg/g for the adsorption at 300 mg/L MB. The adsorption kinetic data were found to fit pseudo-second order model as compared with pseudo-first-order model. The intraparticle diffusion model suggested that the adsorption process of GO towards MB was dominated by the external mass transfer of MB molecules to the surface of GO.

Original languageEnglish
Pages (from-to)819-826
Number of pages8
JournalSains Malaysiana
Volume42
Issue number6
Publication statusPublished - Jun 2013

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Methylene Blue
Oxides
Adsorption
Kinetics
Adsorbents
Isotherms
Electron microscopes
Mass transfer
Molecules

Keywords

  • Adsorption isotherm
  • Adsorption kinetics
  • Intraparticle diffusion
  • Methylene blue

ASJC Scopus subject areas

  • General

Cite this

Chia, C. H., Razali, N. F., Mohd Shaiful, S., Zakaria, S., Huang, N. M., & Lim, H. N. (2013). Methylene blue adsorption on graphene oxide. Sains Malaysiana, 42(6), 819-826.

Methylene blue adsorption on graphene oxide. / Chia, Chin Hua; Razali, Nur Fazlinda; Mohd Shaiful, Sajab; Zakaria, Sarani; Huang, Nay Ming; Lim, Hong Ngee.

In: Sains Malaysiana, Vol. 42, No. 6, 06.2013, p. 819-826.

Research output: Contribution to journalArticle

Chia, CH, Razali, NF, Mohd Shaiful, S, Zakaria, S, Huang, NM & Lim, HN 2013, 'Methylene blue adsorption on graphene oxide', Sains Malaysiana, vol. 42, no. 6, pp. 819-826.
Chia, Chin Hua ; Razali, Nur Fazlinda ; Mohd Shaiful, Sajab ; Zakaria, Sarani ; Huang, Nay Ming ; Lim, Hong Ngee. / Methylene blue adsorption on graphene oxide. In: Sains Malaysiana. 2013 ; Vol. 42, No. 6. pp. 819-826.
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