Response surface methodology for the design of malachite green dye removal by γ-Fe₂O₃ dispersed on reduced graphene oxide sheets.

ABSTRACT: A nanocomposite composed of rGO and γ-Fe₂O₃ was prepared using ultrasonication for the adsorption of malachite green (MG) dye. The preferential plane diffractions at 2θ values of 35.54° and 26.45° about γ-Fe₂O₃ (311) and rGO (002) with 19.85 and 20.92 nm crystallite sizes, respectively confirmed the successful formation of nanocomposite nature of the adsorbent. Moreover, XPS and FTIR results also confirmed the composite formation due to the existence of peaks relevant to the composite's components. The adsorbent's surface charge (pH_PZC = ~ 7.1) was also estimated using the salt addition technique. To minimize experiments and optimize adsorption parameters for the removal of MG by the nanocomposite at 25 °C, central composite design (CC

SUBMITTER: Zhu L 

PROVIDER: S-EPMC11799335 | biostudies-literature | 2025 Feb

REPOSITORIES: biostudies-literature