【摘要】 以硝酸铜为金属源、D-氨基葡萄糖为碳源和氮源，通过碲纳米线模板辅助的水热-热解两步法制备了具有高类过氧化物酶活性的铜/氮掺杂碳纳米材料（Cu-NC）。采用扫描电子显微镜、X射线衍射、拉曼光谱和X射线光电子能谱对其形貌与结构进行了表征。Cu-NC可高效催化过氧化氢（H₂O₂）氧化邻苯二胺（OPD）的反应，生成具有黄色荧光的氧化产物2,3-二氨基吩嗪（DAP），表现出显著的类过氧化物酶活性。基于全氟辛基磺酸（PFOS）对此酶催化荧光体系的抑制效应（即PFOS可导致其荧光减弱），构建了一种用于检测PFOS的高灵敏度、高选择性荧光传感方法。本方法检测PFOS的线性范围为20～800 nmol/L，检出限（LOD）为16.5 nmol/L，并成功应用于实际环境水样中PFOS的测定。更多还原

【Abstract】 Using copper nitrate as the metal source and D-glucosamine as the carbon and nitrogen source, copper/nitrogen-doped carbon nanomaterials（Cu-NC） with high peroxidase-like activity were successfully synthesized via a tellurium nanowire-templated hydrothermal-pyrolysis two-step method. The morphology and structure of Cu-NC were characterized by scanning electron microscopy, X-ray diffraction, Raman spectroscopy, and X-ray photoelectron spectroscopy. Cu-NC efficiently catalyzed the oxidation of o-phenylenediamine（OPD） by hydrogen peroxide（H₂O₂） to produce yellow fluorescent product 2,3-diaminophenazine（DAP）, demonstrating significant peroxidase-like activity. Based on the inhibitory effect of perfluorooctane sulfonate（PFOS） on this enzymatic catalytic fluorescence system（Where PFOS caused fluorescence quenching）, a highly sensitive and selective fluorescent sensing method for PFOS detection was developed. This method exhibited a good linear relationship in the concentration range of 20 to 800 nmol/L, with a detection limit of 16.5 nmol/L, and was successfully applied to determination of PFOS in real environmental water samples.更多还原