Engineering the Activity‐Selectivity Balance in Biomimetic MOF Nanozymes via Amino Acid‐Induced Pore Confinement
Engineering the Activity‐Selectivity Balance in Biomimetic MOF Nanozymes via Amino Acid‐Induced Pore Confinement
研究概述
比较四种氨基酸调控MIL-101(Fe)纳米酶的效果：半胱氨酸通过孔道空间门控提高底物选择性，虽活性降低，农药区分能力仍较原MOF提高约10倍；组氨酸活性最高但区分能力仅提高约5倍，揭示选择性优化对多目标分析的重要作用。
谱图与表征信息
FIGURE 1 (A) Scheme of the one-pot synthesis of AA-MIL-101(Fe), AA = Cys, His, Asp, and Pro. (B) SEM images of AA-MIL-101(Fe). (C) PXRD patterns and (D) FT-IR spectra of MIL-101(Fe) and AA-MIL-101(Fe). (E) XPS fully scanned spectrum of MIL-101(Fe) and AA-MIL-101(Fe). (F) Fe K- edge XANES spectra and (G) FT-EXAFS spectra of MIL-101 and AA-MIL-101(Fe), Fe foil, Fe2O3, and FeO. (H) N2 adsorption–desorption isotherms of MIL-101(Fe) and AA-MIL-101(Fe). (I) Micropores size distribution of MIL-101(Fe) and AA-MIL-101(Fe). (J) Average pore diameter of MIL-101(Fe) and AA-MIL-101(Fe).