Fabrication of RHA-silica/graphene oxide nanocomposites for removal of lead ions from water

In this study, rice husk ash-silica/graphene oxide (RHA-SiO 2 /GO) nanocomposites were synthesized by the in situ method using (3-aminopropyl) triethoxysilane as a coupling agent. The obtained products were used to remove lead ions (Pb 2+ ) from aqueous solution. Effects of SiO 2 :GO mass ratio, con...

Full description

Saved in:
Bibliographic Details
Published in:Environmental technology 2021-06, Vol.42 (14), p.2202-2210
Main Authors: Thy, Lu Thi Mong, Hau, Dinh Trung, Lien, Le Thi Kim, Hung, Nguyen Duc Huy, Tu, Tran Hoang, Nam, Hoang Minh, Hieu, Nguyen Huu, Thanh Phong, Mai
Format: Article
Language:English
Subjects:
Adsorption
Aminopropyltriethoxysilane
Aqueous solutions
Coupling agents
Fabrication
Fourier transforms
Graphene
graphene oxide
Gravimetric analysis
Infrared spectroscopy
Ions
Lead
nanocomposite
Nanocomposites
Rice husk ash-silica
Silica
Silicon dioxide
Transmission electron microscopy
Water treatment
X-ray diffraction
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:In this study, rice husk ash-silica/graphene oxide (RHA-SiO 2 /GO) nanocomposites were synthesized by the in situ method using (3-aminopropyl) triethoxysilane as a coupling agent. The obtained products were used to remove lead ions (Pb 2+ ) from aqueous solution. Effects of SiO 2 :GO mass ratio, contact time, pH and initial Pb 2+ concentration on the adsorption capacity were studied. It was found that the suitable ratio of SiO 2 :GO for Pb 2+ adsorption is 100:2. The suitable RHA-SiO 2 /GO was characterized by Fourier-transform infrared spectroscopy, X-ray diffraction, transmission electron microscopy, Brunauer-Emmett-Teller specific surface area and thermal gravimetric analysis. Accordingly, RHA-SiO 2 /GO nanocomposite could be used as promising adsorbent for the removal of Pb 2+ from water.
ISSN:0959-3330
1479-487X
DOI:10.1080/09593330.2019.1696412