Synergistic effects of graphene oxide grafted chitosan & decorated MnO2 nanorods composite materials application in efficient removal of toxic industrial dyes

In this study, we designed a heterogeneous graphene oxide (GO) grafted on chitosan decorated with MnO2 nanorods (α-MnO2NRs/GO-Chit) composite materials and its ability to remove the cationic anionic toxic dyes from wastewaters were analysed. The synthesised presented an effective stabilization of active (NRs) GO-Chit surface. detailed characterised by several spectroscopic microscopic techniques such as, FT-IR, P-XRD, SEM, TEM, Raman, TGA, XPS, BET, CO2-TPD UV–Visible analysis. addition, α-MnO2NRs/GO-Chit material is successfully applied in removal industrial ionic as amido black 10B (AB) methylene blue (MB), respectively. dye adsorption experiments confirmed that GO-Chit/α-MnO2 NRs exhibited remarkably high capacity efficient (MB) (AB). maximum MB (97%) process completed 24 min at C0 = 30 mg·L−1, but case AB (80%) was reached 700 min. Over hybrid material, theoretical monolayer (qmax values 328.9 mg g−1) calculated Langmuir isotherm equation. MB, faster 2.18 times achieved than AB10 dye. enhanced over due increased surface functionalities (i.e., oxygen-containing groups), basicity strong electrostatic forces between GO-Chit. Furthermore, displayed good stability after 10 successive tests.