Synthesis and application of Fe3O4/GO/PVP composite material for methylene blue adsorption-Reference-Cited by-同舟云学术

Synthesis and application of Fe3O4/GO/PVP composite material for methylene blue adsorption

Published:2023-07-14 Issue:2 Volume:15 Page:1-10
ISSN:2815-6412
Container-title:CTU Journal of Innovation and Sustainable Development
language:
Short-container-title:CTU J. of Inn. & Sus. Dev.

Author:

Luong Huynh Vu Thanh,Nguyen Thi Nhu Y,Nguyen Van Kiet,Ngo Truong Ngoc Mai,Nguyen Nhu Ngoc,Ly Phuong Thao

Abstract

In this study, Fe3O4/GO/PVP (FGP) was successfully synthesized and efficiently applied for absorbing methylene blue. First, GO was synthesized by Hummer’s method from waste home-batteries. The chemical co-precipitation method was used to fabricate Fe3O4/GO from a mixture solution of GO, Fe3+, Fe2+. Polyvinylpyrrolidone PVP was selected to functionalize Fe3O4/GO and form Fe3O4/GO/PVP for improving dispersibility purpose in aqueous solution. The obtained Fe3O4/GO/PVP was characterized by XRD, FT-IR, BET, FE-SEM, UV-Vis techniques. Moreover, the effecting factors as pH, time adsorption, initial concentration of methylene blue were conducted. Adsorption isotherm models were also identified. The results showed that specific surface area of FGP-3 was 70.0 m2.g-1, the Freundlich isotherm model was suitable and the Dubinin - Radushkevich isotherm model showed that the process was physical adsorption. The maximum capacity (qmax) was 30.4 mg.g-1. These findings prove Fe3O4/GO/PVP as an inexpensive and efficient adsorbent for removal of cationic dyes.

Publisher

Can Tho University

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