Zhu Liqin, Yang Fei, Lou Congcong, Zhang Xiaomei, Yang Yanzhao
Key Laboratory for Special Functional Aggregate Materials of Education Ministry, School of Chemistry and Chemical Engineering, Shandong University, Jinan, 250100, Shandong, China.
School of Pharmaceutical Sciences, Shandong University, Jinan, 250012, Shandong, China.
Mikrochim Acta. 2023 Jul 31;190(8):339. doi: 10.1007/s00604-023-05916-7.
A hollow porphyrin-based porous organic polymer (H-Fe-POP) was prepared for rapid and sensitive colorimetric determination of Cr(VI), which exhibited excellent dual enzyme-like activities, including oxidase-like and peroxidase-like activities. Due to the specific binding of 8-hydroxyquinoline (8-HQ) to Cr(VI), 3,3',5,5'-tetramethylbenzidine (TMB) was liberated, and TMB was oxidized to blue ox-TMB catalyzed by H-Fe-POP. Based on the excellent oxidase-like activity of H-Fe-POP, an ultra-fast colorimetric platform for the detection of Cr(VI) was constructed, allowing the quantification of Cr(VI) in the range 2-130 μM within 30 s with a detection limit of 0.23 μM. Importantly, the sensor can accurately determine Cr(VI) in industrial wastewater, indicating its high potential for environmental monitoring.
制备了一种基于卟啉的中空多孔有机聚合物（H-Fe-POP），用于快速、灵敏地比色测定Cr(VI)，该聚合物表现出优异的双酶样活性，包括氧化酶样活性和过氧化物酶样活性。由于8-羟基喹啉（8-HQ）与Cr(VI)的特异性结合，释放出3,3',5,5'-四甲基联苯胺（TMB），TMB在H-Fe-POP催化下被氧化为蓝色的氧化型TMB（ox-TMB）。基于H-Fe-POP优异的氧化酶样活性，构建了一种用于检测Cr(VI)的超快速比色平台，可在30 s内对2-130 μM范围内的Cr(VI)进行定量，检测限为0.23 μM。重要的是，该传感器能够准确测定工业废水中的Cr(VI)，表明其在环境监测方面具有很高的潜力。
