dc.contributor.author | Nyairo, Wilfrida N | |
dc.contributor.author | Eker, Yasin R | |
dc.contributor.author | Kowenje, Chrispin | |
dc.contributor.author | Zor, Erhan | |
dc.contributor.author | Bingol, Haluk | |
dc.contributor.author | Tor, Ali | |
dc.contributor.author | Ongeri, David M | |
dc.date.accessioned | 2018-05-31T12:46:55Z | |
dc.date.available | 2018-05-31T12:46:55Z | |
dc.date.issued | 2017-11-01 | |
dc.identifier.uri | https://repository.maseno.ac.ke/handle/123456789/526 | |
dc.description | Graphene oxide (GO) and graphene oxide modified with methyl-β-cyclodextrin denoted as
GO-mβCD were prepared and applied as adsorbents to determine the adsorption
characteristics of Pb (II) from aqueous solutions. The characteristic results of Fourier
transform infrared (FTIR) spectroscopy, X-ray diffraction (XRD), Raman spectroscopy, and
scanning electron microscopy (SEM) showed that mβCD was successfully physically
attached to GO to form the GO-mβCD nanocomposite. The adsorption equilibrium and
kinetics of the adsorbents were well described by Langmuir isotherm and pseudo-second-
order models, respectively. The maximum Pb (II) adsorption capacity of GO-mβCD (at pH= 6
and room temperature) was determined as 312.5 mg/g which was significantly higher than
that of GO (217.39 mg/g). This indicates that the modification of GO with mβCD enhances … | en_US |
dc.description.abstract | Graphene oxide (GO) and graphene oxide modified with methyl-β-cyclodextrin denoted as GO-mβCD were prepared and applied as adsorbents to determine the adsorption characteristics of Pb(II) from aqueous solutions. The characteristic results of Fourier transform infrared (FTIR) spectroscopy, X-ray diffraction (XRD), Raman spectroscopy, and scanning electron microscopy (SEM) showed that mβCD was successfully physically attached to GO to form the GO-mβCD nanocomposite. The adsorption equilibrium and kinetics of the adsorbents were well described by Langmuir isotherm and pseudo-second-order models, respectively. The maximum Pb(II) adsorption capacity of GO-mβCD (at pH = 6 and room temperature) was determined as 312.5 mg/g which was significantly higher than that of GO (217.39 mg/g). This indicates that the modification of GO with mβCD enhances the adsorption capacity of GO. The desorption studies show that the adsorbent GO-mβCD can be used for at least five cycles with non-significant loss of its initial adsorption capacity for Pb(II) ions. | en_US |
dc.publisher | Springer International Publishing | en_US |
dc.subject | Lead Adsorption Methyl-β-cyclodextrin Graphene oxide | en_US |
dc.title | Efficient removal of lead (II) ions from aqueous solutions using methyl-β-cyclodextrin modified graphene oxide | en_US |
dc.type | Article | en_US |