LAUSR

Abstract The toxic and costly chemicals are usually used as the source of silicon for the synthesis of mesoporous materials. In this paper, the mesoporous material PS-MCM-41 was synthesized by hydrothermal synthesis, in which low-silicon content peanut shell ash is used as the silicon source. The properties of the obtained material were confirmed by N2 physical adsorption, X-ray diffraction (XRD), SEM, TEM, and FTIR. The adsorption performance was evaluated during the adsorption experiment of crystal violet dye and compared with that of the mesoporous material MCM-41. The results showed that the peanut shell ash as silicon source could be used to successfully synthesize the mesoporous material PS-MCM-41. The adsorption efficiency of PS-MCM-41 to 50 mg/L crystal violet solution reached 99.90%, and the adsorption efficiency of PS-MCM-41 to 800 mg/L crystal violet solution reached 84.2%. Compared with MCM-41 and other adsorbents, PS-MCM-41 exhibited excellent adsorption properties and adsorption capacity for crystal violet. The adsorption kinetic data showed that the pseudo-secondary equation could better explain the adsorption data of the adsorption crystal violet. The adsorption isotherm model was consistent with the Langmuir model (R2> 0.99) with maximum adsorption capacities of 1428.57 mg/g.