Effective Removal of Basic Red 46 with Ti3C2 Powder Modified with Citric acid

Abstract MXene, an emerging two‐dimensional nanomaterial, possessed large specific surface area good hydrophilicity and tunable interlayer spacing which had attracted the attention of scientists. However, MXene itself was very easy to stack. Here, we reported one MXene‐based composite, using Ti 3 C 2 as a matrix, citric acid (CA) modifying alkalized Ti 3 C 2 (Alk‐TC) were compounded to prepare citric acid‐alkalized Ti 3 C 2 composite (CA‐Alk‐TC) which was used subsequently as an adsorbent for adsorbing basic red 46. The results of batch adsorption experience indicated that the adsorption kinetics conformed to the pseudo‐second‐order kinetic model, and the adsorption thermodynamics corresponded to the Langmuir isotherm model. When the reaction condition was 60 min, 5 mg, pH 5, 140 mg/L, and 308 K, the Langmuir monolayer adsorption capacity of basic red 46 reached 230.95 mg/g.