Fabrication of RHA-silica/graphene oxide nanocomposites for removal of lead ions from water. Issue 14 (20th June 2021)

• Record Type: Journal Article
• 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
• Is Part Of: Environmental technology. Volume 42:Issue 14(2021)
• Page Start: 2202
• Page End: 2210
• Publication Date: 2021-06-20
• Subjects: Rice husk ash-silica -- graphene oxide -- nanocomposite -- adsorption -- lead; Environmental engineering -- Periodicals; Environmental protection -- Periodicals; 628.05
• DOI: 10.1080/09593330.2019.1696412
• Languages: English
• ISSNs: 0959-3330

Abstract

ABSTRACT: In this study, rice husk ash-silica/graphene oxide (RHA-SiO2 /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 SiO2 :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 SiO2 :GO for Pb 2+ adsorption is 100:2. The suitable RHA-SiO2 /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-SiO2 /GO nanocomposite could be used as promising adsorbent for the removal of Pb 2+ from water. GRAPHICAL ABSTRACT: UF0001