부산대학교 도서관

Abstract: MXenes are two-dimensional materials that possess remarkable properties, including large surface area, surface terminations (F, O, OH), and mechanical and thermal stability. These properties are exceptional in providing enzymes’ chemical and thermal stability for industrial applications through immobilizing enzymes on MXenes as support. They will thus be explored and investigated in this work. Therefore, Ti2NTx MXene was successfully etched from Ti2AlN MAX using a LiF-HCl mixture. The morphology and characteristic properties of the synthesized MAX and MXene were confirmed using microscopic (SEM–EDS and TEM) and spectroscopic techniques (FTIR, Raman, XPS, and XRD), respectively. Subsequently, the synthesized MXene was used to covalently immobilize laccase Rhus vernicifera with glutaraldehyde as a bifunctional linker. Hexamethylenediamine was used as a spacer to protrude the enzyme from the support (MXene). The immobilization yield of laccase on Ti2NTx was 11.6%, with laccase activity of 7.81 × 10−3 U/mg for 2 mg/mL initial free laccase concentration.Graphical Abstract: