通过光热协同催化实现表面荧光基底的重复利用

Recycling of Surface Fluorescent Substrates through Photothermal Synergistic Catalysis

当前的荧光传感器大多难以重复使用,因此限制了它们的应用。作者通过简单的水热法合成了一种含氟的氧化铈(F-CeO_(2))纳米颗粒,将其作为光热催化剂,并在其表面负载Ag@SiO_(2)构成荧光传感器。SEM观察表明,制备的F-CeO_(2)纳米颗粒的尺寸约为50 nm。在95℃水浴和100 mW·cm^(-2)的光照下,光热协同催化染料R6G降解,2 h内降解率达到98%。该荧光传感器的检测极限浓度达5×10^(-7)mol·L^(-1)。这种基于光热协同催化的传感器可用于监测水中偶氮染料的浓度,为水质检测提供一种有前途的方案。

Currently,most of the fluorescent sensors are difficult to reuse,which limits their applications.We synthesized a fluorine-containing cerium oxide(F-CeO_(2))as a photothermal catalyst by a simple hydrothermal method,and loaded Ag@SiO_(2)on its surface to form a fluorescence sensor.SEM observation showed that the size of the as-prepared F-CeO_(2)nanoparticles was around 50 nm.In a 95℃water bath and 100 mW·cm-2 illumination,the degradation rate of R6G dyes by the photothermal synergistic catalysis achieves of 98%within 2 h.The limit concentration of the fluorescence detector was 5×10^(-7) mol·L^(-1).This photothermal synergistic catalysis-based sensor platform was successfully used to monitor the concentration of azo dyes in water,providing a promising solution for water quality detection.