Cataluminescence sensor based on Pt/NU-901 nanocomposite for rapid capture, catalysis and detection of acetone in exhaled breath

Cataluminescence sensor was useful for rapid determination of acetone in exhaled breath, which was a biomarker of diabetes. In Pt NPs@NU-901 nanocomposite, Pt NPs were dispersed in the elliptical structure of NU-901 successfully, and the original structure of NU-901 was kept intact. The CTL signal of acetone indicated that Pt NPs@NU-901 has the best catalytic performance. The introduction of Pt NPs improves the catalytic performance of nanocomposites effectively, and the coordination with acetone increased the adsorption energy by more than 8 times. Pt NPs@NU-901 integrated rapid capture, catalysis with detection of acetone, then the CTL method based on Pt NPs@NU-901 was established for rapid determination of acetone content in exhaled breath, the linear range was 0.50-70.0 mg/L, limit of detection was 0.23 mg/L (S/N = 3). RSDs for repeatability and reproducibility experiments were 4.8% and 4.5%, respectively. Acetone content in exhaled breath samples was detected by the method with recoveries from 90.6% to 107%. Notable, results of samples were consistent with that obtained from gas chromatography, indicating that the established CTL method was accurate, stable and rapid, and provided a guarantee for rapid and nondestructive screening of diabetic patients.